Charging limiting mode control method of wireless charging mobile power supply and power supply
By limiting the charging mode control method and combining human-machine interface signals and resonant circuit Q value detection, the power consumption and safety risks caused by accidental triggering during transportation or storage of wireless charging power banks are solved, achieving a balance between low power consumption and a good user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHENZHEN MAGIC CUBE DIGITAL TECH CO LTD
- Filing Date
- 2025-12-31
- Publication Date
- 2026-04-28
AI Technical Summary
During transportation or storage, wireless charging power banks may accidentally activate the wireless charging function due to external factors such as vibration or pressure, resulting in unexplained power loss and safety risks. Furthermore, the existing Q-value detection mechanism leads to continuous power consumption, affecting the initial user experience and battery life.
The method of limiting charging mode control is adopted. Through the dual judgment mechanism of human-machine interface signal and resonant circuit Q value detection, it ensures that the wireless charging power bank reduces energy consumption when not in use, and activates the charging function when the user explicitly operates it.
It effectively avoids power wastage and abnormal overheating caused by accidental triggering during transportation or storage, ensuring safety and a convenient and reliable experience for first-time use, reducing energy consumption and extending battery life.
Smart Images
Figure CN121939656A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of electronic accessories technology, and in particular to a method for controlling the limited charging mode of a wireless charging power bank and a power supply. Background Technology
[0002] A wireless charging power bank is a portable power supply device that provides wireless charging for electronic devices. Due to energy conversion losses inherent in its wireless charging module, its charging efficiency is typically lower than that of wired charging, resulting in more electrical energy being converted into heat. During transportation or storage, the wireless charging function of a power bank may be accidentally activated by external factors such as vibration or pressure. This not only causes unexplained battery drain but may also pose safety risks due to continuous abnormal heating.
[0003] Therefore, it is necessary to reliably suppress the wireless charging function of the wireless charging power bank before the user actually uses it, in order to achieve the dual goals of low-power storage and ensuring the user's first-time user experience. Summary of the Invention
[0004] To solve the above-mentioned technical problems, this application adopts a technical solution of a limited charging mode control method and power supply for a wireless charging mobile power supply.
[0005] An embodiment of a restricted charging mode control method for a wireless charging power bank includes: the wireless charging power bank is in a restricted charging mode in response to an interface signal of the wireless charging power bank; the wireless charging power bank activates Q-value detection of a resonant circuit to identify whether a device to be charged is placed at the wireless charging location of the wireless charging power bank; if a device to be charged is identified at the wireless charging location, wireless charging begins and the restricted charging mode is exited; if no device to be charged is identified at the wireless charging location, the system returns to the restricted charging mode.
[0006] In some embodiments, the method of responding to an interface signal of the wireless charging power bank includes: the interface corresponding to the charging interface of the wireless charging power bank, and the interface signal including detecting an external power signal connected through the charging interface, or detecting an external load connected through the charging interface and outputting an internal power signal thereto.
[0007] In some embodiments, when the wireless charging power bank detects that the charging interface is connected to an external power signal or outputs an internal power signal, it supplies power to the resonant circuit.
[0008] In some embodiments, the method of responding to an interface operation signal of the wireless charging power bank includes: the interface corresponding to the human-machine interface of the wireless charging power bank: a button and an indicator module, wherein the interface signal includes receiving a button signal indicating that the button is pressed and outputting an indicator signal from the indicator module.
[0009] In some embodiments, during the continuous output of the indication signal from the indication module, the wireless charging power supply activates Q-value detection of the resonant circuit.
[0010] In some embodiments, the method further includes a method for the wireless charging power bank to enter a restricted charging mode before the wireless charging power bank is in a restricted charging mode: receiving a first button signal indicating that a button on the wireless charging power bank is pressed; responding to the first button signal, outputting a first indicator signal to an indicator module of the wireless charging power bank, the indicator module displaying based on the first indicator signal; receiving a second button signal indicating that the button is pressed while the indicator module is displaying based on the first indicator signal; and responding to the second button signal, the wireless charging power bank entering the restricted charging mode.
[0011] In some embodiments, after the wireless charging power bank enters the restricted charging mode, it outputs a second indication signal to the indication module of the wireless charging power bank, and the indication module displays based on the second indication signal.
[0012] In some embodiments, the method further includes a method for the wireless charging power bank to enter a restricted charging mode before the wireless charging power bank is in a restricted charging mode: connecting the wireless charging power bank to a test terminal via its charging interface, or wirelessly accessing the test terminal via the wireless charging module of the wireless charging power bank; the wireless charging power bank receiving a signal or instruction from the test terminal; and responding to the signal or instruction, the wireless charging power bank entering the restricted charging mode.
[0013] The beneficial effects of this application are as follows: This application discloses a limited charging mode control method and power supply for a wireless charging power bank. The method includes a method for entering the limited charging mode and a method for exiting the limited charging mode. Entering the limited charging mode includes two methods: entry via a human-machine interface and entry via a detection terminal. Exiting the limited charging mode involves the wireless charging power bank responding to an interface operation signal, activating Q-value detection of the resonant circuit, and identifying whether a device to be charged is placed at the wireless charging location. If so, wireless charging begins and the limited charging mode is exited; otherwise, it returns to the limited charging mode. This method not only facilitates the wireless charging power bank to effectively enter the limited charging mode at the factory stage, thereby reducing energy consumption, but also provides users with a good user experience during initial use, achieving a dual balance between energy consumption and user experience through Q-value detection and identification. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the internal circuit composition of an embodiment of the wireless charging power bank of this application; Figure 2 This is a flowchart illustrating the exit from the restricted charging mode of an embodiment of the restricted charging mode control method for wireless charging power banks of this application. Figure 3 This is a flowchart illustrating an embodiment of the restricted charging mode control method for wireless charging power banks of this application, showing the process of entering restricted charging mode. Figure 4 This is a flowchart illustrating an embodiment of the restricted charging mode control method for wireless charging power banks of this application, showing the process of entering restricted charging mode. Figure 5 This is a schematic diagram showing the connection between the wireless charging power bank and the test terminal in this application. Detailed Implementation
[0015] To facilitate understanding of this application, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application.
[0016] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.
[0017] Currently, portable power banks with wireless charging capabilities are popular among users because they eliminate the need for data cables to charge electronic devices and avoid the need to plug and unplug cables, making them more convenient to use. When a power bank wirelessly charges, its transmitter generates an electromagnetic field to transfer energy. However, if the power bank is not placed correctly on the device being charged, it will waste power. More dangerously, if a metal object such as a key is mistakenly placed on the transmitter, the electromagnetic waves will heat the metal, potentially burning out the power bank or even causing a fire.
[0018] Therefore, wireless charging modules need to have target recognition capabilities; charging will only begin when the correct device is detected. Current technology typically incorporates a resonant circuit within the wireless charging module and achieves recognition by detecting the circuit's quality factor (Q value). The Q value is an indicator of the resonant circuit's performance, and this circuit is composed of both the transmitting and receiving coils within the wireless charging module.
[0019] For example, when a device with a receiving coil is placed in the wireless charging area, the Q value of the resonant circuit changes significantly. The power bank's processor detects this change, determines that a device has been placed there, and then initiates wireless charging.
[0020] Therefore, this identification mechanism based on continuous monitoring of the Q value of the resonant circuit means that even when the wireless charging power bank is powered off, its detection circuit continues to consume power. As a result, the product may run out of power during warehousing and transportation, and by the time it reaches the user, it will be unable to be turned on, severely impacting the initial user experience and damaging battery life.
[0021] This application provides a mobile power bank with wireless charging capability. For example... Figure 1 The diagram shows a schematic representation of the circuit composition of the wireless charging module inside the power bank. The circuit diagram includes a processor 1, a charging interface 2, a human-machine interface 3, a battery 4, an inverter circuit 5, and a resonant circuit 6. The processor 1 is electrically connected to the charging interface 2, the human-machine interface 3, the battery 4, the inverter circuit 5, and the resonant circuit 6; this electrical connection is a signal connection. The charging interface 2 also has a power supply connection with the battery 4 and the inverter circuit 5. An external DC power supply from the charging interface 2 can power the inverter circuit 5 and charge the battery 4, while the battery 4 can output DC power to the inverter circuit 5. The inverter circuit 5 converts the DC power into AC power, which is then converted into a wireless charging transmission signal by the resonant circuit 6 for wireless charging.
[0022] In this application, processor 1 can detect the Q-value of resonant circuit 6. The wireless charging resonant circuit includes a transmitting coil on the wireless charging power bank and a receiving coil of the device being charged. When the device is placed on the wireless charging dock of the power bank, i.e., when the receiving coil of the device and the transmitting coil on the wireless charging dock are placed close together, a significant Q-value change in the resonant circuit can be detected. Therefore, the wireless charging power bank determines whether a device has been placed by detecting the Q-value change in resonant circuit 6, and can then further initiate the wireless charging control process. Therefore, Q-value detection needs to be performed periodically or routinely to identify whether a device has been placed on the wireless charging position of the power bank.
[0023] Figure 1 The charging interface 2 is typically a DC power socket or plug, such as a USB interface or a Type-C interface. This interface allows for the supply of power from an external DC power source and the charging of the battery within the wireless charging power bank. A device can also be connected to the charging interface 2, allowing the internal battery to charge the device. Therefore, in this application, the processor 1 can monitor voltage and / or current changes on the charging interface 2 to determine whether an external power source or a device is connected. Additionally, the charging interface 2 may also have a data signal connection terminal, and the processor 1 can receive data signals from this terminal, thereby also determining whether an external power source or a device is connected.
[0024] Furthermore, in Figure 1 The human-machine interface 3 includes human-machine interaction objects such as switches, buttons, indicator modules, and touch screens, used to realize human-machine operation and interaction. When the processor 1 receives the control signal from the human-machine interface 3, it can perform the corresponding work response.
[0025] Therefore, in this application, when the wireless charging power bank operates in the limited charging mode, the entire internal circuitry is shut down or operates at low power. For example, processor 1 is only used to monitor the operational changes of charging interface 2 and / or human-machine interface 3, while other functions of the processor are stopped, such as processor 1 stopping the timing identification of the Q value of resonant circuit 6. In the limited charging mode, other circuits such as inverter circuit 5 and resonant circuit 6 also stop working, thereby reducing energy consumption.
[0026] Based on the circuit described above, the following embodiments of the wireless charging mobile power supply limited charging mode control method of this application will be further explained.
[0027] Example 1: like Figure 2 As shown, Embodiment 1 includes the following steps: S101: The wireless charging power bank is in a limited charging mode, responding to the human-machine interface signal of the wireless charging power bank; S102: The wireless charging power bank activates Q-value detection of the resonant circuit to identify whether a device to be charged is placed at the wireless charging location of the wireless charging power bank. S103: If the device to be charged is detected to be placed at the wireless charging location, wireless charging is started and the restricted charging mode is exited.
[0028] Thus, by setting a restricted charging mode and combining a dual judgment mechanism of human-machine interface signal and resonant circuit Q-value detection, this invention effectively avoids power waste and abnormal heat generation caused by accidental triggering during transportation or storage. This method ensures that wireless charging is reliably suppressed to achieve low power consumption, and only exits the restricted mode and begins charging when the user actively operates through the human-machine interface and the Q-value detection confirms the device's presence. This balances safety and energy saving before use with a convenient and reliable first-time user experience.
[0029] Specifically, in step S101, "the wireless charging power bank is in restricted charging mode" means that the wireless charging power bank is currently in restricted charging mode. It can be understood that the restricted charging mode of the wireless charging power bank can be set by the manufacturer after it leaves the factory; or it can mean that the user or manufacturer sets the wireless charging power bank to restricted charging mode after it has been used normally.
[0030] It is understandable that "limited charging mode" could refer to either the shipping mode of the wireless charging power bank or the inactive mode of the wireless charging power bank.
[0031] In some embodiments, when the wireless charging power bank is in inactive mode, its maximum output power is less than or equal to a threshold power. This fundamentally avoids the severe heat generation and power waste caused by accidental high-power output, thus significantly improving safety and energy efficiency during transportation and storage. Here, "the maximum output power of the wireless charging power bank is less than or equal to the threshold power" can mean that the wireless charging power bank can output power externally, and its external output power is less than or equal to the threshold power. Alternatively, "the maximum output power of the wireless charging power bank is less than or equal to the threshold power" can also mean that the external charging output path of the wireless charging power bank is closed, and the maximum output power of the wireless charging power bank is equal to 0.
[0032] Specifically, the output power of a wireless charging power bank refers to the charging output power it provides to external electronic devices. The output power can refer to the power it provides for wirelessly charging electronic devices; alternatively, for wireless charging power banks with wired charging capabilities, the output power can also refer to the power it provides for wired charging of electronic devices. No specific limitation is made here.
[0033] Further threshold power is 0-20W, for example, 0, 2W, 5W, 6W, 8W, 10W, 15W, 18W, 20W, which is not limited here.
[0034] It's worth noting that the restricted charging modes specifically include the shipping mode or the inactive mode of the wireless charging power bank. Shipping mode refers to a low-power protection state that the wireless charging power bank enters during non-use periods such as transportation and storage. Its main purpose is to prevent accidental triggering of the wireless charging function due to external factors such as vibration or pressure, thereby avoiding power waste and abnormal heat generation. Inactive mode refers to the state of the wireless charging power bank after leaving the factory and before its first official activation by the user. In this mode, the charging function is controlled off or strictly limited, also aiming to ensure safety and conserve power until the user awakens it and uses it normally through agreed-upon operations (such as pressing a button or connecting a charger).
[0035] In other embodiments, the limited charging mode may also refer to the wireless charging power bank being in a state that limits the charging output power.
[0036] Specifically, in step S101, "responding to the human-machine interface signal of the wireless charging power bank" refers to the controller of the wireless charging power bank receiving and processing electrical signals emitted from its external physical interaction components. The human-machine interface signal is typically triggered by the user's active operation, such as short-pressing or long-pressing the power button, touching a specific sensing area, or completing a specific button combination operation. This signal is a crucial instruction and necessary prerequisite for the system to determine the user's intention to use the device and, accordingly, initiate subsequent detection processes (such as Q-value detection of the resonant circuit). This design ensures that the activation of the wireless charging function originates from explicit human interaction, rather than accidental triggering by the external environment, thereby enhancing the reliability and safety of the device at the hardware logic level.
[0037] Specifically, in step S101, "activating the Q-value detection of the resonant circuit in the wireless charging power bank" can refer to activating the module required for Q-value detection in the resonant circuit, i.e., the module for Q-value detection, while the other modules can remain in their original states. Preferably, in step S101, only the module in the resonant circuit used for Q-value detection can be activated, while the other modules in the resonant circuit remain off, in order to reduce additional battery power loss in the wireless charging power bank.
[0038] Of course, in other embodiments, "the wireless charging power bank enables Q-value detection of the resonant circuit" can also refer to enabling the modules required for Q-value detection in the resonant circuit, as well as enabling modules in the resonant circuit other than those used for Q-value detection.
[0039] Specifically, in step S102, for a wireless charging power bank in restricted charging mode, after receiving and responding to the human-machine interface signal, the power bank will activate the Q-value detection of its internal resonant circuit to identify whether a device to be charged is placed at the wireless charging location. In other words, when the wireless charging power bank is in restricted charging mode, the Q-value detection function of its internal resonant circuit is turned off, thereby improving the safety of the wireless charging power bank.
[0040] As can be understood, a wireless charging location refers to the area on the surface of a wireless charging power bank used to place electronic devices for wireless charging.
[0041] Specifically, in step S103, if a device to be charged is detected placed at the wireless charging location, wireless charging begins and the restricted charging mode is exited. In other words, after Q-value detection is enabled in step S102, wireless charging will only begin and the restricted charging mode will exit after a charging device is detected at the wireless charging location.
[0042] Furthermore, if the duration of the human-machine interface signal of the wireless charging power bank is less than a preset time threshold, and if no device to be charged is detected at the wireless charging location during the duration of the valid human-machine interface signal, then Q-value detection stops and the power bank returns to the restricted charging mode. This effectively distinguishes between brief user misoperations and genuine usage intentions—if the duration of the human-machine interface signal (such as a brief accidental touch) is too short, the wireless charging power bank will not respond to charging and will return to the restricted charging mode, effectively avoiding accidental charging caused by accidental contact. Secondly, continuously detecting the charging position status during the validity period of the human-machine interface signal ensures that charging is only activated when the user explicitly operates and the device is confirmed to be in place, further preventing accidental charging caused by only meeting a single condition. Therefore, it can significantly reduce ineffective power consumption, reduce unnecessary power loss and heat dissipation pressure on the wireless charging power bank, thereby improving safety and reliability while optimizing the overall user experience, without increasing additional hardware costs.
[0043] This duration threshold can be, for example, 1 second or a few seconds. By setting a duration threshold, it is possible to prevent interface signals from being generated due to brief misoperations (such as accidentally pressing a button or accidentally inserting a charging plug). Therefore, for such short-lived interface signals, although the Q value of the resonant circuit is also detected, if an invalid interface signal is identified, the system will still return to the limited charging mode.
[0044] Combination Figure 1 The described embodiment uses a limited charging mode, a special protective sleep state, particularly for devices such as power banks. This mode aims to ensure the safety of the power bank during long-distance transportation and storage, while also guaranteeing safety during first-time use. It completely prevents accidental activation, unnecessary power consumption, or abnormal overheating, ensuring safety during initial use and preventing the battery from being depleted before reaching the user, thus guaranteeing a ready-to-use experience and safety.
[0045] Furthermore, human-machine interface signals include button press recognition signals, switch signals, touch signals from the touchscreen, and light display signals.
[0046] Furthermore, in addition to exiting the restricted charging mode in step S101, the wireless charging device also includes: when the wireless charging power bank is in the restricted charging mode, in response to a charging interface signal of the wireless charging power bank, the charging interface signal includes an external power signal detected by the charging interface, or an internal power signal detected by the charging interface and output to an external load; if the wireless charging power bank communicates with the electronic device through the charging interface signal, the wireless charging power bank exits the restricted charging mode. Thus, the wireless charging power bank can exit the restricted charging mode simply by using the charging interface, making the method for exiting the restricted charging mode relatively simple.
[0047] Specifically, "wireless charging power banks communicate with electronic devices via charging interface signals" refers to the process where, after the power bank's charging interface (such as a USB-C port) is physically connected to an external electronic device (such as a mobile phone or tablet) via a charging cable, both parties engage in a pre-defined, low-power digital signal "handshake" through the internal data lines of the interface (such as D+ / D- pins and CC lines). This "handshake" process typically includes mutually confirming the device type, negotiating supported charging protocols (such as PD and QC), and agreeing on the appropriate voltage / current. Only after successfully completing this identification and negotiation communication process does the power bank's controller determine that the currently connected device is a legitimate and valid electronic device, and only then does it begin charging the electronic device or being charged by the electronic device.
[0048] For example, before the wireless charging power bank communicates with the electronic device via the charging interface signal, it is in a limited charging mode, with a maximum output power of 10W. After communicating with the electronic device via the charging interface signal, the wireless charging power bank exits the limited charging mode and can output more than 10W of charging power.
[0049] The charging interface signals include the presence or absence of power supply voltage and / or power supply current on the charging interface, the voltage value and / or current value, and the data signals on the charging interface. In step S101, when the wireless charging power bank is in limited charging mode, all its circuits operate at low power, including the resonant circuit and inverter circuit, which are all stopped working. Therefore, it cannot detect whether a device being charged is placed on the wireless charging power bank. However, even in limited charging mode, the processor can still receive and respond to interface signals.
[0050] In step S102, the processor of the wireless charging power bank can start the resonant circuit, detect whether the Q value of the resonant circuit has changed, and also identify whether such change is due to the device being charged being placed at the wireless charging position of the wireless charging power bank.
[0051] In step S103, if the recognition is valid, the restricted charging mode is exited and wireless charging begins. If the recognition is invalid, the Q-value detection of the resonant circuit ends, and the system returns to the restricted charging mode.
[0052] As can be seen, in Embodiment 1, the Q value detection of the resonant circuit is only initiated when a valid interface signal is detected. The purpose is to identify whether a device to be charged has been placed. This detection and identification process is brief. If no device to be charged is detected, the system returns to the limited charging mode. Therefore, the detection and identification process consumes less energy.
[0053] Example 1 assumes that the interface signals can be effectively identified. Specifically, the identified interface signals include: The first method: The interface corresponds to the charging interface of the wireless charging power bank. The interface signal includes detecting an external power source signal through the charging interface, indicating that an external power source has been connected to the charging interface of the power bank to charge it. Alternatively, the charging interface can detect an external load and output an internal power signal to it, indicating that the external load is an electronic device being charged, which has been connected to the charging interface of the power bank, and the power bank is charging the electronic device.
[0054] Furthermore, when the wireless charging power bank detects or receives an external power signal from the charging interface or outputs an internal power signal, it supplies power to the resonant circuit to enable Q-value detection of the resonant circuit.
[0055] It can be understood that, in some embodiments, when the controller of the wireless charging power bank detects or receives a signal that an external power source is connected to the charging interface or outputs an internal power source signal, it will supply power to the part of the resonant circuit used for Q-value detection.
[0056] In practical applications, when the wireless charging power bank is in limited charging mode, the Q-value detection module in the resonant circuit is in a non-conductive state. When the controller detects or receives an external power supply signal at the charging interface or outputs an internal power supply signal, it supplies power to the Q-value detection module in the resonant circuit of the wireless charging power bank, causing the Q-value detection module to conduct. The Q-value detection module can be connected in series with a switch and connected to the battery's power supply path, allowing the Q-value detection module to switch between a non-conductive state and a conductive state.
[0057] It is understood that in some embodiments, when the controller of the wireless charging power bank detects or receives a signal that the charging interface is connected to an external power source or outputs an internal power source signal, it can also supply power to the entire resonant circuit. Furthermore, for the first method of detecting the power signal of the charging interface, multiple detections can be performed, i.e., detecting the power signal multiple times (e.g., 5 times) within a defined time range (e.g., 1 second) to see if a valid voltage or current value exists in each detection. Alternatively, the detection time can be extended, such as exceeding 1-2 seconds, continuously detecting the presence of the power signal within this time range to avoid incorrect judgments and exiting the restricted charging mode due to momentary contact of the charging interface (e.g., unstable insertion / removal, contact with static electricity).
[0058] The second method: The interface corresponds to the human-machine interface of the wireless charging power bank: a button and an indicator module. The interface signal includes receiving the button signal when the button is pressed and outputting the indicator signal of the indicator module.
[0059] Furthermore, if the wireless charging power bank detects or receives the human-machine interface signal from the human-machine interface, it will supply power to part of the resonant circuit to enable the Q-value detection of the resonant circuit.
[0060] It is understood that, in some embodiments, when the controller of the wireless charging power bank detects or receives a human-machine interface signal from the human-machine interface, it will supply power to the part of the resonant circuit used for Q-value detection.
[0061] In practical applications, when the wireless charging power bank is in limited charging mode, the Q-value detection module in the resonant circuit is in a non-conductive state. When the controller detects or receives a human-machine interface signal from the HMI, it supplies power to the Q-value detection module in the resonant circuit of the wireless charging power bank, causing the Q-value detection module to conduct. The Q-value detection module can be connected in series with a switch and connected to the battery's power supply path, allowing the Q-value detection module to switch between a non-conductive state and a conductive state.
[0062] It is understood that, in some embodiments, when the controller of the wireless charging power bank detects or receives a human-machine interface signal, it may also supply power to the entire resonant circuit.
[0063] Furthermore, during the continuous output of the indicator module's illumination signal, within a detection window of several seconds, the wireless charging power bank initiates Q-value detection of the resonant circuit. When the indicator module turns off and no charging device is detected, it returns to the limited charging mode.
[0064] The interface signals of the above two methods serve as trigger signals for exiting the restricted charging mode, which is both convenient for users to operate and can be accurately identified.
[0065] Example 2: Example 2 illustrates how to manually switch a wireless charging power bank from an unrestricted charging mode to a restricted charging mode, combined with... Figure 3 As shown, the steps include: S201: Receive a first button signal indicating that the button of the wireless charging power bank has been pressed; S202: In response to the first button signal, output a first indication signal to the indication module of the wireless charging power bank, and the indication module displays based on the first indication signal; S203: During the period when the indicator module is displaying based on the first indicator signal, a second key signal indicating that the key has been pressed is received; S204: In response to the second button signal, the wireless charging power bank enters the restricted charging mode.
[0066] The indicator module includes sound and light devices such as indicator lights and buzzers, while the display indicates whether the light is on or a sound is emitted.
[0067] Example 2 is based on the operation of the human-machine interface of the wireless charging power bank to enter the restricted charging mode. It can be seen that the operation method used here is a combination of button and indicator module display to enter the restricted charging mode.
[0068] Therefore, this embodiment provides a method for entering a restricted charging mode through a specific button operation. Its core design utilizes a two-step "wake-up-confirmation" operation logic to effectively prevent accidental triggering during daily use. Specifically, the user first presses the button, triggering a first button signal. At this time, the indicator module responds in a specific manner (such as continuous flashing, constant illumination, or continuous sound), prompting the user to enter an operation confirmation window lasting several seconds. Only when the button is pressed again within this window will the wireless charging power bank confirm the user's intention and ultimately enter the restricted charging mode. This design ensures that the mode cannot be activated by a single or random unintentional press, preventing the wireless charging power bank from accidentally entering the restricted charging mode during daily carrying or storage, thus improving the user experience.
[0069] Preferably, for the first press of the button in step S201, to avoid accidental operation caused by brief button touches, the duration of the button press can be limited. For example, if the duration of the first button signal generated by the button press is greater than 1 second, it is considered a valid button press.
[0070] After the indicator module starts displaying in step S202, the indicator light can remain constantly lit. In step S203, the duration of the second button signal can also be limited, for example, it needs to be longer than 1 second, in order to enter the limited charging mode.
[0071] Furthermore, Embodiment 2 is merely one combination of "button press + indicator module display" and does not constitute the only limitation. For example, when there are multiple buttons, the first button signal may also include button signals where at least two buttons are pressed simultaneously as valid input. In step S203, the indicator module display may include various display methods, such as the indicator light first entering a constant on state, then rapidly flashing between light and dark, and then flashing between light and dark with a longer interval. It can be selected that pressing the button a second time during the rapid flashing between light and dark is required to effectively enter the limited charging mode.
[0072] In order to indicate that it has entered the restricted charging mode and to display differently from the previous method, after step S204, the wireless charging power bank outputs a second indication signal to the indication module of the wireless charging power bank after entering the restricted charging mode, and the indication module displays based on the second indication signal.
[0073] To distinguish it from the first indicator signal, such as a constant-on signal used to control the indicator light, the second indicator signal can include a flashing signal or an off signal for the indicator light, thus differentiating it from the first indicator signal when entering the limited charging mode. For example, the second indicator signal might control the indicator light to flash three times and then automatically turn off after the second button press. Of course, the first indicator signal could also be a flashing signal for the indicator light, while the second indicator signal could be a constant-on signal for the indicator light, as long as the two indicator signals can be clearly distinguished from the display of the indicator module.
[0074] Therefore, by distinguishing between the first and second indicator signals, users can clearly and promptly know whether the device has entered the restricted charging mode, which is convenient for users.
[0075] Example 3: Example 3 illustrates how to use additional testing equipment to transition a wireless charging power bank from an unrestricted charging mode to a restricted charging mode. This method can be implemented during the manufacturing stage of the wireless charging power bank, i.e., before it leaves the factory after manufacturing, for industrial applications.
[0076] Combination Figure 4 and Figure 5 As shown, the steps include: S301: The wireless charging power bank is communicatively connected to the test terminal; S302: The wireless charging power bank receives signals or instructions from the test terminal; S303: In response to the signal or instruction, the wireless charging power bank enters a restricted charging mode.
[0077] In step S301, the communication connection is implemented in the following ways: connecting the test terminal through the charging interface of the wireless charging power bank, or wirelessly accessing the test terminal through the wireless charging module of the wireless charging power bank, and establishing communication between the wireless charging power bank and the test terminal through Bluetooth or wireless network communication (such as WiFi).
[0078] based on Figure 1 The circuit diagram shown illustrates that the wireless charging power bank in this application can communicate data via either the charging interface or the wireless communication interface of the wireless charging module. The communication target is a test terminal, a functional terminal device used to enter restricted charging mode. This facilitates efficient and standardized implementation of restricted charging mode entry and is suitable for batch operations in factory production.
[0079] Therefore, after step S301, a data communication connection can be established between the wireless charging power bank and the test terminal. Then, steps S302 and S303 complete the entry into the restricted charging mode. The test terminal will collect and record data throughout the entire process, recording the specific time and status of each wireless charging power bank entering the restricted charging mode. Therefore, through the records and displays of the test terminal, it is possible to identify and determine whether the restricted charging mode has truly been entered, ensuring that each wireless charging power bank can be traced during mass production.
[0080] like Figure 5 As shown, in step S302, after the wireless charging power bank establishes a connection with the test terminal, the test terminal can send specific signals or instructions to the wireless charging power bank so that the wireless charging power bank can enter the restricted charging mode.
[0081] For example, in Embodiment 3, the specific signal sent by the wireless charging power bank can be a specific voltage signal lasting for a certain period of time. Upon detecting this signal, the power bank's MCU will execute the process of entering a limited charging mode.
[0082] For example, the instruction in Embodiment 3 can also be to enter the restricted charging mode by the power bank recognizing that it has received a specific code.
[0083] In a specific implementation where a test terminal sends a specific command to enter a restricted charging mode, the test terminal establishes a connection with the power bank via wired or wireless communication. In the wired mode, the test terminal sends a structured USB PD VDM command to the power bank's protocol chip via a Type-C interface. For example, the hexadecimal sequence with a frame content of "AA 55 F0 0247 0D 0A" contains the command code "Enter restricted charging mode". Once the power bank recognizes this specific code, it enters the restricted charging mode.
[0084] Similarly, in wireless mode, the test terminal modulates the encoded command to enter the restricted charging mode onto the carrier wave and sends it to the power bank. Upon receiving the command, the power bank enters the restricted charging mode. Preferably, in step S303, after entering the restricted charging mode, a reverse confirmation can be sent to the test terminal, or the indicator module can display that it has been entered, so that the tester can observe it.
[0085] In summary, this application discloses a limited charging mode control method for a wireless charging power bank. This method includes a method for entering the limited charging mode and a method for exiting the limited charging mode. Entering the limited charging mode includes two methods: entry via a human-machine interface and entry via a detection terminal. Exiting the limited charging mode involves the wireless charging power bank responding to an interface operation signal, activating Q-value detection of the resonant circuit, and identifying whether a device to be charged is placed at the wireless charging location. If so, wireless charging begins and the limited charging mode is exited; otherwise, it returns to the limited charging mode. This method not only facilitates the wireless charging power bank to effectively enter the limited charging mode at the factory stage, thereby reducing energy consumption, but also provides a good user experience during initial use, achieving a dual balance between energy consumption and user experience through Q-value detection and identification. The above are merely embodiments of this application and do not limit the patent scope of this application. Any equivalent structural transformations made based on the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.
Claims
1. A method for controlling the limited charging mode of a wireless charging power bank, characterized in that, include: When the wireless charging power bank is in a restricted charging mode, it responds to the human-machine interface signal of the wireless charging power bank; The wireless charging power bank activates the Q-value detection of the resonant circuit to identify whether a device to be charged is placed at the wireless charging location of the wireless charging power bank. If a device to be charged is detected placed at the wireless charging location, wireless charging begins and the restricted charging mode is exited.
2. The method for controlling the limited charging mode of a wireless charging power bank according to claim 1, characterized in that, Also includes: If the duration of the human-machine interface signal of the wireless charging power bank being valid is less than a preset duration threshold, and if no device to be charged is detected at the wireless charging location during the period when the human-machine interface signal is valid, then the Q-value detection is stopped and the system returns to the restricted charging mode.
3. The method for controlling the limited charging mode of a wireless charging power bank according to claim 1, characterized in that, The method for responding to the human-machine interface signal of the wireless charging power bank includes: the human-machine interface includes a button and an indicator module, and the human-machine interface signal includes receiving a button signal indicating that the button is pressed and outputting an indicator signal from the indicator module. The controller of the wireless charging power bank receives the human-machine interface signal and supplies power to part of the resonant circuit to enable the Q value detection of the resonant circuit and detect whether the wireless charging position of the wireless charging power bank is where the device to be charged is placed.
4. The method for controlling the limited charging mode of a wireless charging power bank according to claim 3, characterized in that, During the continuous output of the indication signal from the indication module, the wireless charging power bank activates the Q-value detection of the resonant circuit.
5. The method for controlling the limited charging mode of a wireless charging power bank according to any one of claims 1-4, characterized in that, Also includes: When the wireless charging power bank is in a restricted charging mode, in response to the charging interface signal of the wireless charging power bank, the charging interface signal includes an external power signal detected by the charging interface or an internal power signal detected by the charging interface and output to an external load. If the wireless charging power bank communicates with the electronic device through the charging interface signal, the wireless charging power bank exits the restricted charging mode.
6. The method for controlling the limited charging mode of a wireless charging power bank according to claim 1, characterized in that, When the wireless charging power bank is in a limited charging mode, the maximum output power of the wireless charging power bank is less than or equal to the threshold power.
7. The method for controlling the limited charging mode of a wireless charging power bank according to claim 1, characterized in that, The human-machine interface is a button on the wireless charging power bank. Before the wireless charging power bank is in restricted charging mode, it also includes: Receive a first key signal indicating that the key has been pressed; In response to the first button signal, a first indication signal is output to the indication module of the wireless charging power bank, and the indication module displays based on the first indication signal; During the period when the indicator module displays based on the first indicator signal, when a second button signal is received indicating that a button has been pressed, the wireless charging power bank enters the restricted charging mode in response to the second button signal.
8. The method for controlling the limited charging mode of a wireless charging power bank according to claim 7, characterized in that, After the wireless charging power bank enters the restricted charging state, it outputs a second indication signal to the indication module of the wireless charging power bank, and the indication module displays based on the second indication signal.
9. The method for controlling the limited charging mode of a wireless charging power bank according to claim 3 or 7, characterized in that, The buttons include one or more different buttons selected from the power button, character buttons, or function buttons.
10. The method for controlling the limited charging mode of a wireless charging power bank according to claim 1, characterized in that, Before the wireless charging power bank is in restricted charging mode, it also includes: The wireless charging power bank establishes a communication connection with the test terminal. The wireless charging power bank receives signals or instructions from the test terminal. In response to the signal or instruction, the wireless charging power bank enters a restricted charging mode.
11. A wireless charging power bank, characterized in that, The method for controlling the limited charging mode of a wireless charging power bank as described in any one of claims 1 to 10.