Load pulling current dynamic adjusting method and device based on wireless charging and terminal

Abstract

The invention discloses a load pulling current dynamic adjusting method and device based on wireless charging and a terminal, and relates to the technical field of charging, and the method comprises the steps: monitoring the charging voltage change of the output end of a charger in real time when the charger is connected, and obtaining the power supply capability of the output end of the charger; according to the obtained power supply capacity of the output end of the charger, charging is started from a preset specified small current load, the charging current is gradually adjusted, the charging current is gradually increased to the matched charging current according to a preset amplitude, and it is ensured that the increase of the charging current is matched with the power supply capacity of the output end; meanwhile, the change of the charging voltage of the output end of the charger is monitored, when the charging voltage is gradually reduced to a preset danger threshold value, the charging current is controlled to be stopped from being increased, and the charging current value at the moment serves as the maximum safe charging current value; and in the subsequent charging process, the charging is continuously kept by using the safe maximum charging current value until the charging is completed. According to the invention, the problem of charging interruption caused by overlarge current can be effectively avoided.

Description

Technical Field

[0001] This invention relates to the field of wireless charging technology, and more particularly to a method, apparatus, electronic device, and computer-readable storage medium for dynamic adjustment of load current based on wireless charging. Background Technology

[0002] With the rapid popularization of portable electronic products such as smartphones, wearable devices, and electric vehicles, the limitations of traditional wired charging methods in terms of convenience and safety have become increasingly apparent, driving the development of wireless charging technology. Wireless charging achieves contactless energy transfer through electromagnetic fields, electromagnetic induction, or magnetic resonance, eliminating the constraints of charging cables and improving the user experience.

[0003] However, wireless charging also faces numerous technical challenges. First, compatibility is a significant issue. Multiple wireless charging standards exist on the market (such as Qi and AirFuel), requiring wireless chargers to have intelligent identification and adjustment capabilities to automatically match the device's charging specifications, ensuring efficient and safe charging. Wireless charging typically requires the device and the charger's charging pad to maintain a specific alignment; excessive distance or deviation from the charging center can lead to unstable charging. The output power of a wireless charger is closely related to the relative position of the receiving device; even slight changes in the distance or alignment between the device and charger can interrupt energy transfer, resulting in unexpected charging interruptions.

[0004] Since its introduction, wireless charging technology has gradually become an important charging method for smartphones and other devices due to its convenience. However, in practical use, current wireless charging technology still faces many challenges. One such problem is unexpected charging interruption. Unexpected charging interruptions not only affect charging efficiency but may also cause devices to fail to charge properly, and even impact battery life and safety.

[0005] Therefore, existing technologies still need improvement and development. Summary of the Invention

[0006] The technical problem this invention aims to solve is to address the aforementioned deficiencies of existing technologies by providing a method, device, electronic device, and storage medium for dynamic adjustment of load current based on wireless charging. This invention provides a method for dynamic adjustment of load current based on output power supply, utilizing the adjusted load current to avoid charging interruptions. When the device is connected to the charger, the system monitors voltage changes in real time and gradually adjusts the charging current, starting with a small load and gradually increasing it to a suitable current to ensure stable charging. This invention effectively avoids charging interruptions caused by excessive current.

[0007] This application provides a method for dynamic adjustment of load current based on wireless charging, the technical solution of which is as follows: A method for dynamically adjusting the load current based on wireless charging, comprising: When the charger is connected, the charging voltage change at the charger output terminal is monitored in real time. Based on the monitored charging voltage change at the charger output terminal, the power supply capacity of the charger output terminal is obtained. Based on the power supply capacity of the charger output, start charging from a preset small current load, gradually adjust the charging current, and gradually increase the charging current to a matching charging current by a predetermined amount to ensure that the increase in charging current matches the power supply capacity of the output. At the same time, the charger monitors the charging voltage at the output terminal. When the charging voltage gradually drops to a preset danger threshold, the charger stops increasing the charging current and uses the current value as the safe maximum charging current value. During subsequent charging, continue charging at the safe maximum charging current value until charging is complete.

[0008] The aforementioned method for dynamic adjustment of load current based on wireless charging, wherein the step of monitoring the charging voltage change at the charger output terminal in real time when the charger is connected, and obtaining the power supply capacity of the charger output terminal based on the monitored charging voltage change, includes: When a device is detected connected to the charger, determine whether the current wireless charging type is Extended Power Distribution (EPP) or Basic Power Distribution (BPP), and set the corresponding maximum input current threshold according to the different charging types. When the current wireless charging type is determined to be Extended Power Distribution (EPP), the maximum input current threshold corresponding to EPP is set; the maximum input current threshold set for EPP is obtained.

[0009] The aforementioned method for dynamic adjustment of load current based on wireless charging, wherein the step of monitoring the charging voltage change at the charger output terminal in real time when the charger is connected, and obtaining the power supply capacity of the charger output terminal based on the monitored charging voltage change, includes: When the current wireless charging type is determined to be Basic Power Distribution (BPP), the maximum input current threshold corresponding to BPP is set; the maximum input current threshold set for BPP is obtained.

[0010] The aforementioned method for dynamic adjustment of load current based on wireless charging, wherein the step of monitoring the charging voltage change at the charger output terminal in real time when the charger is connected, and obtaining the power supply capacity of the charger output terminal based on the monitored charging voltage change, includes: When the testing device is plugged into the charger for the first time, the charging capability assessment of the charger will begin for the first time; if the charging capability assessment has been performed before, the previous assessment results will be used.

[0011] The aforementioned method for dynamically adjusting the load current based on wireless charging, wherein the steps of starting charging from a preset small load current based on the obtained power supply capacity of the charger output terminal, gradually adjusting the charging current, and gradually increasing the charging current by a predetermined amount to a matching charging current, ensuring that the increase in charging current matches the power supply capacity of the output terminal, include: Based on the power supply capacity of the charger output, start charging from a preset low current of 100 mA, gradually adjust the charging current, and gradually increase the charging current to the matching charging current by a predetermined amount. Every 100 milliseconds, increase the load by 100 mA to ensure that the increase in charging current matches the power supply capacity of the output.

[0012] The aforementioned method for dynamically adjusting the load current based on wireless charging, wherein the step of monitoring the charging voltage change at the charger output terminal, and controlling the cessation of increasing the charging current when the charging voltage gradually decreases to a preset danger threshold, and taking the charging current value at this point as the safe maximum charging current value, includes: Each time the charging current is increased under load, the change in the charging voltage VBUS at the charger output terminal is detected. When the charging voltage VBUS gradually drops to the preset danger threshold, the increase in the charging current is stopped, and the charging current value at this time is taken as the safe maximum charging current value.

[0013] The aforementioned method for dynamically adjusting the load current based on wireless charging, wherein the step of monitoring the charging voltage change at the charger output terminal, and controlling the cessation of increasing the charging current when the charging voltage gradually decreases to a preset danger threshold, and taking the charging current value at this point as the safe maximum charging current value, includes: Each time the load is applied and the charging current is increased, the change in the charging voltage VBUS at the charger output terminal is detected. If the charger's charging current reaches the maximum allowable current for the corresponding charging mode, and the charging voltage VBUS still does not drop to the preset danger threshold, then the charger will control the charging to use the maximum allowable current for the corresponding charging protocol mode for continuous charging.

[0014] A dynamic load current adjustment device based on wireless charging, wherein the device comprises: The charging capability assessment module is used to monitor the charging voltage change at the charger output terminal in real time when the charger is connected, and to obtain the power supply capability of the charger output terminal based on the monitored charging voltage change. The charging mode determination module is used to determine whether the current wireless charging type is Extended Power Distribution (EPP) or Basic Power Distribution (BPP) when a device is detected connected to a charger, and to set the corresponding maximum input current threshold according to the different charging types. When the current wireless charging type is determined to be EPP, the maximum input current threshold corresponding to EPP is set; and the maximum input current threshold corresponding to EPP is obtained. When the current wireless charging type is determined to be BPP, the maximum input current threshold corresponding to BPP is set; and the maximum input current threshold corresponding to BPP is obtained. The dynamic adjustment module is used to start charging from a preset small current load based on the power supply capacity of the charger output terminal, gradually adjust the charging current, and gradually increase the charging current to a matching charging current by a predetermined amount to ensure that the increase in charging current matches the power supply capacity of the output terminal. The current-limiting charging control module is used to monitor the charging voltage change at the charger output terminal. When the charging voltage gradually drops to a preset danger threshold, the module stops increasing the charging current and uses the current value as the safe maximum charging current value. In subsequent charging, the module continues to charge using the safe maximum charging current value until charging is complete. The maximum current charging control module is used to increase the charging current each time the load is applied and to detect the change in the charging voltage VBUS at the charger output terminal. When the charger's charging current reaches the maximum current allowed by the corresponding charging mode, and the charging voltage VBUS still does not drop to the preset danger threshold, the module controls the charging to use the maximum current allowed by the corresponding charging protocol mode for continuous charging.

[0015] An electronic device includes a memory and one or more programs, wherein one or more programs are stored in the memory and configured to be executed by one or more processors, the one or more programs comprising the method for performing any one of the methods.

[0016] A computer-readable storage medium, wherein, when instructions in the storage medium are executed by a processor of an electronic device, the electronic device is enabled to perform any of the methods described herein.

[0017] As described above, this application provides a method, device, electronic device, and computer-readable storage medium for dynamic adjustment of load current based on wireless charging. This invention, based on real-time monitoring of the output power supply capacity, starts with a small load and gradually increases the charging current to ensure that the current increase matches the output power supply capacity. Simultaneously, it monitors the output voltage change; when the voltage drops below a predetermined danger threshold, it stops increasing the current and uses this current value as the safe maximum charging current. During subsequent charging, this maximum current value is maintained to ensure a stable and safe charging process. This invention effectively avoids charging interruptions caused by excessive current, improving the reliability and stability of the charging process, avoiding the risk of output damage due to overload, and extending the device's lifespan. By adjusting the charging current in real time, charging efficiency can be optimized, providing users with a more intelligent and safer charging experience. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a flowchart illustrating the dynamic adjustment method for load current based on wireless charging provided in Embodiment 1 of the present invention.

[0020] Figure 2 This is a flowchart illustrating the dynamic adjustment method for load current based on wireless charging provided in Embodiment 2 of the present invention.

[0021] Figure 3 This is a schematic diagram of the load current dynamic adjustment device based on wireless charging provided in an embodiment of the present invention.

[0022] Figure 4 This is a block diagram illustrating the internal structure of the electronic device provided in an embodiment of the present invention. Detailed Implementation

[0023] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of this application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0024] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] There are various wireless charging standards on the market (such as Qi, AirFuel, etc.), which requires wireless chargers to have intelligent identification and adjustment capabilities to automatically match the charging specifications of devices and ensure efficient and safe charging. Among existing technologies, the Qi wireless charging protocol is the most mainstream and widespread wireless charging protocol, and almost all smartphones support this standard. The working principle of Qi wireless charging technology is based on electromagnetic induction. Basically, energy is transferred between the charger (or transmitter) and the device (or receiver) through a magnetic field. The device receives energy from the charger and converts it into electrical energy for charging. According to different power requirements, the Qi wireless charging standard is divided into several different power levels, including: (1) 5W power (BBPP): suitable for low-power devices, such as smartphones, smartwatches, Bluetooth headsets, etc. (2) 15W power (EPP): suitable for high-power devices, such as high-end smartphones and other large electronic products.

[0026] Current technology drawbacks: Since its introduction, wireless charging technology has gradually become an important charging method for smartphones and other devices due to its convenience. However, in practical use, wireless charging technology still faces many challenges. One of these is unexpected charging interruption, which urgently needs to be addressed. Unexpected charging interruption not only affects charging efficiency but may also cause devices to fail to charge properly, and even affect battery life and safety. The probability of charging interruption increases significantly in the following scenarios with existing technology: 1) Poor coil alignment: The efficiency of wireless charging is closely related to the alignment of the coils between the device and the charger. If the alignment is inaccurate, the power supply capacity will be weakened, and the charging voltage may not be sufficient to maintain stable charging, resulting in charging interruption or reduced efficiency.

[0027] 2) Charger quality issues: The design and quality of the wireless charger also affect the stability of the power supply. A poorly designed charger may result in weak power supply, leading to charging interruptions or low charging efficiency. Especially in low-quality wireless chargers, the inability to effectively maintain a stable current may cause the device to stop charging.

[0028] 3) Overload protection mechanism accidentally triggered: When the charging current suddenly increases, the charging base may trigger the overload protection mechanism to prevent damage or overheating. In this case, charging will be interrupted, resulting in a charging failure.

[0029] This invention optimizes the common charging interruption problem in existing technologies. In conventional solutions, charging interruptions often occur when the charger itself is underperforming or the coil is misaligned, resulting in insufficient power supply at the output terminal, yet excessive current is still applied. When the output terminal cannot provide enough current, the excessive load can easily cause the power output terminal to be overloaded, leading to charging interruption.

[0030] To avoid this situation, this invention proposes a method for dynamically adjusting the load current based on the output power supply capacity. Specifically, based on real-time monitoring of the output power supply capacity, a small load current is started, and the charging current is gradually increased to ensure that the current increase matches the output power supply capacity. Simultaneously, the output voltage is monitored; when the voltage drops below a predetermined danger threshold, the current increase is stopped, and this current value is taken as the safe maximum charging current. During subsequent charging, this maximum current value is maintained to ensure a stable and safe charging process.

[0031] This invention effectively avoids charging interruptions caused by excessive current, improving the reliability and stability of the charging process and preventing damage to the output terminal due to overload, thus extending the device's lifespan. By adjusting the charging current in real time, charging efficiency can be optimized, providing users with a more intelligent and safer charging experience. Specific embodiments are as follows: like Figure 1 As shown, this application proposes a method for dynamic adjustment of load current based on wireless charging, including the following steps: Step S100: When the charger is connected, monitor the charging voltage change at the charger output terminal in real time, and obtain the power supply capacity of the charger output terminal based on the monitored charging voltage change at the charger output terminal. In this embodiment of the invention, the example of a smartphone being connected to a wireless charger is used for illustration. When a smartphone is connected to a wireless charger, the system of the present invention will monitor the fluctuation of the charger's output voltage in real time and determine the charger's maximum power supply capacity (such as maximum power, stable output voltage range, etc.) by the voltage change characteristics.

[0032] For example, if a wireless charger is rated at 5V / 2A, but the voltage starts to drop significantly at 1.5A after being connected, the system of this invention will recognize that its actual power supply capacity is lower than the rated value, and it may only support a stable output of 5V / 1.2A. The advantage of doing this is that it avoids blindly charging according to the charger's rated parameters, prevents charging abnormalities (such as voltage drops or device restarts) caused by insufficient actual power supply capacity, and improves charging safety.

[0033] Step S200: When a device is detected to be connected to a charger, determine whether the current wireless charging type is Extended Power Distribution (EPP) or Basic Power Distribution (BPP), and set the corresponding maximum input current threshold according to the different charging types. In this embodiment of the invention, EPP (Extended Power Distribution, up to 15W) and BPP (Basic Power Distribution, up to 5W) are two wireless charging standards.

[0034] When the device is connected to a wireless charger for charging, the system will first identify the charging type and then set an initial surge current limit based on the type (to prevent instantaneous large current surges).

[0035] For example, if an Extended Power Distribution (EPP) charger is detected, the maximum input current threshold might be set to 1.5A; if it's a Basic Power Distribution (BPP) charger, it would be set to 0.8A to prevent damage from excessive initial current. The advantage of this approach is that it allows for tailored protection strategies for chargers with different power standards, reducing current surges that can damage the charger and device, and extending hardware lifespan.

[0036] Step S300: Based on the power supply capacity of the charger output terminal, start charging from a preset specified small current load, gradually adjust the charging current, and gradually increase the charging current to a matching charging current by a predetermined amount to ensure that the increase in charging current matches the power supply capacity of the output terminal. In this embodiment of the invention, based on the power supply capability of the wireless charger determined by the above steps, the system controls the charging to start from a preset small current (e.g., 0.1A), and gradually increases the current by a fixed amount (e.g., increasing by 0.1A each time) until a stable value matching the power supply capability of the charger is found.

[0037] For example, if the charger's power supply capacity actually supports a maximum current of 1A, the system in this embodiment will test step by step from 0.1A→0.2A→…→1.0A, maintaining stability at each stage before increasing the current, ensuring that the charger's load is not suddenly exceeded. The advantage of this approach is that it avoids applying a large current all at once through trial-and-error voltage increases, reducing power fluctuations in the initial charging phase, making the charging process smoother, and lowering the risk of overheating.

[0038] Step S400: Simultaneously, monitor the change in charging voltage at the charger output terminal. When the charging voltage gradually drops to a preset danger threshold, control to stop increasing the charging current and take the charging current value at this time as the safe maximum charging current value. In this embodiment of the invention, if the output voltage of the wireless charger suddenly drops to a preset danger threshold (e.g., from 5V to 4.2V) during the gradual increase of current, the system control immediately stops increasing the current and sets the current value of the previous voltage level (e.g., 5V) as the safe maximum current.

[0039] For example, if the voltage suddenly drops from 5V to 4.1V (below the 4.2V threshold) when the current increases to 0.9A, the control system in this embodiment of the invention will lock the maximum safe current at 0.9A-0.1A=0.8A and stop increasing it. The advantage of this is that the voltage warning mechanism accurately identifies the charger's load limit, preventing voltage collapse due to overcurrent and avoiding abnormal shutdown or hardware damage to the device due to undervoltage.

[0040] Step S500: In subsequent charging, continue charging with the safe maximum charging current value until charging is complete.

[0041] In this embodiment of the invention, after determining the safe maximum current, this current value is maintained unchanged during the subsequent charging process until the battery is fully charged. For example, after locking 0.8A as the safe current, the entire charging process is carried out continuously at 0.8A until the battery capacity is charged from 20% to 100%. The advantages of doing so are: maximizing charging efficiency while ensuring safety, avoiding prolonged charging time caused by repeated current adjustments, and reducing battery wear and tear and extending battery cycle life due to stable current output.

[0042] Furthermore, in the aforementioned method for dynamic adjustment of load current based on wireless charging, step S400 includes: S410. Each time the charging current is increased, the change in the charging voltage VBUS at the charger output terminal is detected. When the charging current of the charger reaches the maximum current allowed by the corresponding charging mode, and the charging voltage VBUS still does not drop to the preset danger threshold, the charger is controlled to use the maximum current allowed by the corresponding charging protocol mode for continuous charging.

[0043] This embodiment further describes an intelligent charging current regulation strategy that continuously monitors changes in the charger output voltage (VBUS) as the charging current is gradually increased. When the charging current has increased to the maximum current value allowed by the current charging mode (such as EPP or BPP), if the charger output voltage VBUS remains stable and does not drop to a preset danger threshold, the system will control the charging to continue at the maximum allowable current of that charging mode.

[0044] For example, when a smartwatch supports two wireless charging modes, EPP (Extended Power Distribution) and BPP (Basic Power Distribution), the maximum current allowed in EPP mode is 3A, and the preset dangerous voltage threshold is 4.2V.

[0045] When charging the watch using a charger that supports EPP mode: the system gradually increases the load from a low current (e.g., 0.5A→1A→1.5A→...→3A). Each time the current is increased, the charger's output voltage VBUS is checked. When the current finally reaches the maximum allowable value of 3A in EPP mode, and VBUS is still stable at 4.8V (above the dangerous threshold of 4.2V), the system determines that the charger has sufficient power supply capacity and controls the charging to continue at the maximum allowable current of 3A until charging is complete.

[0046] The advantages of this approach are: 1) It maximizes charging efficiency, fully utilizing the charger's power supply capacity while ensuring safety, charging at the maximum current allowed by the mode, thus shortening charging time. For example, in the case above, without derating, a 3A current saves nearly half the charging time compared to 1.5A. 2) It intelligently adapts to hardware capabilities, verifying the charger's actual load-bearing capacity through voltage monitoring, avoiding wasted performance due to conservative design. Some chargers claim to support high power but lack actual capability, while this mechanism can filter out truly qualified chargers and maximize their efficiency. 3) It balances safety and efficiency, using the maximum current only when the voltage is stable and does not reach a dangerous threshold, ensuring a safe and stable charging process while avoiding unnecessary current limitations, achieving a balance between safety and efficiency. 4) It adapts to diverse charging devices. Different brands and models of chargers have different actual performance; this mechanism can dynamically adapt to various qualified chargers, ensuring optimal charging on various compliant devices.

[0047] In this embodiment of the invention, this strategy avoids the risks that may arise from blindly using the maximum current, and also prevents low charging efficiency caused by excessive conservatism. It is an intelligent and flexible charging management solution.

[0048] In a further embodiment, the method for dynamically adjusting the load current based on wireless charging, wherein step S100 specifically includes: S101. When a device is detected to be connected to a charger, determine whether the current wireless charging type is Extended Power Distribution (EPP) or Basic Power Distribution (BPP), and set the corresponding maximum input current threshold according to the different charging types. In this embodiment of the invention, when a device (such as a smartwatch) is connected to a charger, the system first detects and determines whether the current wireless charging type is EPP (Extended Power Distribution) or BPP (Basic Power Distribution), and then sets the corresponding maximum input current threshold (i.e., the maximum current limit that the device is allowed to obtain from the charger) according to the type.

[0049] For example, when a smartwatch is connected to a wireless charger, if the system recognizes that the charger supports the Extended Power Distribution (EPP) standard through the communication protocol, it will set the maximum input current threshold to 3A; if it recognizes that it is a Basic Power Distribution (BPP) charger, it will set the threshold to 1A.

[0050] The advantage of this step is that, as the core judgment logic in the initial stage of charging, it enables differentiated management of chargers with different power capabilities. By setting the current upper limit in advance, it avoids the risk of overload caused by charger power mismatch, and at the same time provides a clear safety boundary for current adjustment during subsequent charging.

[0051] S102. When it is determined that the current wireless charging type is Extended Power Distribution (EPP), the maximum input current threshold corresponding to EPP is set; the maximum input current threshold corresponding to EPP is obtained. In this embodiment, when the charging type is confirmed to be Extended Power Distribution (EPP), the system will perform two operations: first, set the maximum input current threshold corresponding to the EPP standard; second, record and obtain the threshold as the upper limit of the current for subsequent charging.

[0052] For example, after a smartwatch detects that an extended power distribution (EPP) charger has been connected, it calculates and sets the maximum input current threshold to 3A (15W ÷ 5V = 3A) according to the EPP standard (maximum 15W power), and stores 3A as the current upper limit for the current charging scenario.

[0053] The advantage of this step is that it allows for the customization of current thresholds to suit the high-power characteristics of the Extended Power Distribution (EPP). This fully leverages the fast-charging advantages of the EPP (allowing for greater current input) while preventing the current from exceeding the EPP charger's capacity by defining specific thresholds, thus avoiding overheating of the charger or damage to the device and achieving a balance between efficiency and safety.

[0054] S103. When it is determined that the current wireless charging type is Basic Power Distribution (BPP), the maximum input current threshold corresponding to Basic Power Distribution (BPP) is set; the maximum input current threshold set for Basic Power Distribution (BPP) is obtained.

[0055] In this embodiment, when the charging type is confirmed to be Basic Power Distribution (BPP), the system also performs two operations: first, setting the maximum input current threshold corresponding to the BPP standard; and second, recording and obtaining the threshold as the upper limit of the current for subsequent charging.

[0056] For example, after a smartwatch detects that a Basic Power Distribution (BPP) charger is connected, it calculates and sets the maximum input current threshold to 1A (5W ÷ 5V = 1A) according to the BPP standard (maximum 5W power), and stores 1A as the current upper limit for the current charging scenario.

[0057] The advantage of this step is that the Basic Power Distribution (BPP) charger hardware design only supports low power output. Setting a 1A threshold can prevent the device from demanding more current from the charger than it can handle, thus avoiding the charger triggering protection mechanisms (such as power outages) or being damaged due to overload, and ensuring the stability and safety of low-power charging scenarios.

[0058] As can be seen, the above three steps form a closed-loop logic of identifying the type → setting the threshold → defining the upper limit. By accurately matching the power characteristics of different charging standards, a safe current boundary is customized for each type of charger. This not only protects the hardware safety of the charger and device, but also fully utilizes the charger's power capabilities within a safe range (such as EPP fast charging), while improving the device's compatibility with various wireless chargers and simplifying the user's workflow.

[0059] In a further embodiment, the method for dynamically adjusting the load current based on wireless charging, wherein step S100 further includes: S110. When the testing device is plugged into the charger for the first time, the charging capability assessment of the charger will begin for the first time; if the charging capability assessment has been performed before, the previous assessment results will be used.

[0060] This step describes the smart device's evaluation strategy for the charger's charging capability. When the system detects that the device is connecting to a charger for the first time, it will start evaluating the charger's charging capability (such as maximum output current, voltage stability, etc.). If the device has previously evaluated the charging capability of the same charger, the previous evaluation results will be reused without needing to evaluate it again.

[0061] For example, in the first-time charger connection scenario, when a smartwatch connects to a certain brand's EPP wireless charger for the first time, the system determines that it is the first insertion, performs a complete charging capability assessment, gradually increases the charging current, monitors voltage changes, and finally determines parameters such as the charger's safe maximum current (e.g., 3A) and voltage stability range (e.g., 4.8-5.2V), and stores these assessment results.

[0062] In non-first-time plug-in scenarios, when the smartwatch is connected to the same charger again, the system identifies the charger's unique identifier (such as the device ID in the protocol), finds that an evaluation has been performed before, and directly calls the previously stored result (such as confirming that its safe maximum current is 3A), skipping the repeated evaluation process and directly entering the stable charging stage.

[0063] The benefits of this approach are: 1) Improved charging efficiency: Charging capability assessment typically requires time-consuming operations such as gradually adjusting current and monitoring voltage (approximately 3-5 seconds). Reusing historical assessment results saves this time, allowing the device to enter a stable charging state faster, especially suitable for scenarios where the same charger is frequently plugged and unplugged (such as when users use their own fixed charger daily). 2) Reduced hardware wear: Repeated current adjustments during the assessment process cause instantaneous power fluctuations in the charger and device, increasing component fatigue wear. Reducing repeated assessments lowers the frequency of such "trial and error" operations, extending the lifespan of the charger and device. 3) Optimized user experience: Avoiding the "assessment delay" that occurs every time the device is plugged in makes the charging process smoother. For example, when a user needs a quick power boost, there is no need to wait for the system to reassess; charging can begin directly with the optimal current. 4) Guaranteed assessment accuracy: The hardware performance of the same charger is usually stable in a short period of time, and reusing assessment results will not affect charging safety; while the first assessment for a new charger ensures that it is adapted to its true capabilities, balancing efficiency and safety. This invention, through the logic of first assessment + historical reuse, minimizes unnecessary operational overhead while ensuring charging safety, taking into account both system efficiency and user experience.

[0064] In a further embodiment, the dynamic adjustment method for load current based on wireless charging, step S300 specifically includes: S310. Based on the power supply capacity of the charger output terminal, start charging from a preset specified small current of 100 mA, gradually adjust the charging current, and gradually increase the charging current to the matching charging current by a predetermined amount. Every 100 milliseconds, increase the load by 100 mA to ensure that the increase in charging current matches the power supply capacity of the output terminal.

[0065] In this embodiment, based on the known power supply capacity of the charger, charging starts from a preset small current (100 mA), and then the current is gradually increased according to a fixed rule, increasing by 100 mA every 100 milliseconds. Through this slow and controllable method, a stable current value that matches the power supply capacity of the charger is finally found.

[0066] For example, suppose a smartwatch detects that the power supply capacity of a charger is up to 1000 mA (1A). In the initial stage, the system starts charging with a current of 100 mA while monitoring whether the charger's output voltage is stable. After 100 milliseconds, the current increases to 200 mA, and the voltage continues to be monitored. After another 100 milliseconds, the current increases to 300 mA, and monitoring continues. This process is repeated, with the current increasing by 100 mA every 100 milliseconds until the current reaches 1000 mA. If the voltage remains stable, this is used as the matching current for continuous charging.

[0067] If, during the boost process (e.g., when the current reaches 800 mA), the charger's output voltage begins to drop significantly and approaches a dangerous threshold, the system will stop boosting and use 800 mA as the matching current.

[0068] The benefits of this step are: 1) High safety: Starting with a small current and gradually increasing it avoids the impact of a sudden large current load on the charger and device. For example, charging directly with a 1A current may cause a poor-quality charger to burn out due to overload, while gradual adjustment can detect its load limit in advance. 2) Strong adaptability: The actual power supply capacity of different chargers may differ from the nominal value (e.g., a nominal 1A may only stably output 0.8A). Step-by-step testing can accurately match its actual capacity, avoiding charging anomalies caused by a "one-size-fits-all" current setting. 3) Good stability: The 100-millisecond interval provides sufficient monitoring time for the system, ensuring that the charger has enough time to reach a new stable state after each current increase, reducing the risk of voltage fluctuations. 4) Protects battery life: The slowly increasing current avoids the violent fluctuations in the chemical reaction of the battery caused by a sudden large current charge, which helps to extend the battery's cycle life. 5) Balanced efficiency: The 100mA increase ensures both adjustment accuracy (able to finely identify the charger's load limit) and avoids excessive charging preparation time due to too small an increase, achieving a balance between safety and efficiency.

[0069] In this embodiment of the invention, the trial-and-error adjustment strategy essentially uses fine-grained control to find the optimal charging current with minimal risk when the true performance of the charger is unknown, thus balancing safety, compatibility, and user experience.

[0070] The present invention will be further described in detail below through another specific application embodiment.

[0071] Specifically, such as Figure 2 As shown in the specific application embodiment 2 of the present invention, a method for dynamic adjustment of load current based on wireless charging is provided, which includes the following steps: S10, Charger plugged in, i.e., the smart device is connected to the wireless charger and enters S11; S11. Determine if the currently connected charger type is EPP. That is, when a charger is detected connected to the device, determine whether the current wireless charging type is Extended Power Distribution (EPP) or Basic Power Distribution (BPP). If the current wireless charging type is EPP, proceed to step S12. If the current charger type is BPP, proceed to step S20.

[0072] S12, Configure Extended Power Distribution (EPPicl) settings; then proceed to S13.

[0073] In this embodiment of the invention, the ICL current is set according to different charging types. ICL (Input Current Limit) refers to the maximum input current threshold set to protect the charging system (including the charger and the device being charged). When the device recognizes different wireless charging types (such as EPP or BPP), it will set the corresponding ICL current accordingly. Essentially, it is to define the upper limit of the safe current based on the power capability and hardware characteristics of the charging standard.

[0074] EPP (Extended Power Distribution) supports higher power (typically up to 15W) and the hardware design can withstand greater current; while BPP (Basic Power Distribution) has lower power (typically up to 5W) and limited hardware capacity.

[0075] In this embodiment of the invention, the ICL current is set in a targeted manner. The system will call the preset ICL parameters according to the identified charging type (EPP / BPP): for EPP type, a higher ICL current (such as 3A) is set to match its high power output capability; for BPP type, a lower ICL current (such as 1A) is set to adapt to its low power design.

[0076] For example, taking wireless charging of a smartwatch as an example: when connected to an EPP charger, the system identifies the device and sets the ICL current to 3A (corresponding to 15W power: 3A × 5V = 15W), ensuring that the charging current does not exceed the safety limit of the EPP standard. When connected to a BPP charger, the ICL current is set to 1A (corresponding to 5W power: 1A × 5V = 5W), preventing the current from exceeding the hardware capacity of the BPP charger.

[0077] The benefits include: 1) Hardware protection: avoiding overheating and component damage due to current exceeding the design limits of the charger or device (e.g., BPP chargers cannot withstand the high current of EPP); 2) Standard compatibility: strictly following the specifications of different charging protocols to ensure compatibility when charging across devices; 3) Efficiency optimization: maximizing current output within a safe range (e.g., EPP's high ICL supports fast charging), balancing safety and charging speed.

[0078] As can be seen, the ICL current setting of this invention according to the charging type is a tailored protection mechanism that not only prevents overload risks but also fully utilizes the performance of different chargers.

[0079] S13. Is this the first time the power supply capacity is being assessed? If yes, proceed to S14; otherwise, proceed to S22.

[0080] In this embodiment of the invention, if the charger is inserted for the first time, the charging capability of the charger is evaluated. If the charging capability has been evaluated before, the previous evaluation results are used.

[0081] S14. Obtain the power of the extended power distribution EPP base. Based on the power, determine whether the maximum current value FCC_MAX can be set, and then proceed to S15.

[0082] This embodiment describes the process of determining the maximum current value (FCC_MAX) that can be set when charging a device in a wireless charging system by obtaining its rated power parameters for a charging dock that supports the Extended Power Distribution (EPP) standard.

[0083] The Extended Power Distribution (EPP) base power refers to the rated output power of a wireless charging base that conforms to the Extended Power Distribution standard (EPP standard typically supports a maximum power of 15W).

[0084] FCC_MAX, or maximum charging current threshold, is the highest current value that the device is allowed to use during charging. It needs to be calculated based on the power of the base to ensure that it does not exceed the power supply capacity of the base.

[0085] The specific logic is that power (P) = voltage (U) × current (I). Under the standard 5V voltage of wireless charging, the safe maximum current value (I=P / U) can be derived from the known power of the EPP base.

[0086] For example, assuming that the rated power of a certain EPP wireless charging dock is 15W (the typical maximum power of the EPP standard), and the standard operating voltage of the wireless charging system is 5V; the system first obtains the power parameter of the EPP dock as 15W; and calculates the maximum current according to the power formula: 15W ÷ 5V = 3A; Therefore, the maximum current value corresponding to the base can be set to 3A, meaning that the current during device charging must not exceed 3A.

[0087] If the rated power of the other EPP base is 10W, then the calculated FCC_MAX is 2A (10W÷5V=2A), and the device will use this as the upper limit of the current for charging adjustment.

[0088] The advantages of this approach are: 1) Precise power supply matching: Determining the maximum current through power calculation avoids relying solely on the charging type (EPP) while ignoring the power differences of the specific charging dock, ensuring that the current setting perfectly matches the actual capacity of the dock; 2) Prevention of power overload: Different EPP docks may have different actual power (e.g., 10W, 15W). This step prevents the device from requesting excessive current from a low-power EPP dock (e.g., requesting 3A current from a 10W dock), preventing dock overload, overheating, or triggering protection mechanisms; 3) Optimized charging efficiency: Setting the maximum current within the dock's power range ensures safety while fully utilizing the dock's power supply capacity, achieving efficient charging that matches its power level (e.g., fast charging with 3A current for a 15W dock, and adapting to 2A current for a 10W dock); 4) Enhanced compatibility: Dynamically adjusting the upper limit of the current for EPP docks of different power allows the device to adapt to a variety of EPP charging devices, improving versatility.

[0089] This step is crucial for charging current control in EPP mode. Through precise power-to-current conversion, it provides a quantitative basis for safe and efficient wireless charging.

[0090] S15. Determine if 100*(i+1) < the set maximum current FCC_MAX; that is, start the load from a current of 100mA, increase the load by 100mA every 100ms, and determine if 100*(i+1) is less than the set maximum current FCC_MAX. If yes, proceed to step S16; otherwise, proceed to step S19. S16. Apply a load current of 100*(i+1)mA and wait 100mA (milliseconds) before proceeding to step S17. S17. Real-time acquisition of charger output voltage vbus, check whether charger output voltage vbus drops to the preset threshold. If no, proceed to step S18; if yes, proceed to step S19. S18, i++, that is, continue to increase the charging current by 100mA and proceed to step S15; S19. Use this current as the maximum current value for the load (100*(i+1)ma (milliamperes)).

[0091] S20, Set the basic power distribution BPicl; and proceed to S21.

[0092] S21. Is this the first time the power supply capacity is being assessed? If yes, proceed to S23; otherwise, proceed to S22.

[0093] S22. Use the maximum current value that has already been evaluated; S23. Obtain the maximum power setting value FCC_MAX for the basic power distribution BPP and proceed to S24.

[0094] S24. Determine if 100*(i+1) < the set maximum current FCC_MAX; that is, start the load from a current of 100mA, increase the load by 100mA every 100ms, and determine if 100*(i+1) is less than the set maximum current FCC_MAX. If yes, proceed to step S25; otherwise, proceed to step S28. S25. Apply a load current of 100*(i+1)mA (milliamperes) and wait 100mA (milliseconds) before proceeding to step S26; S26. Real-time acquisition of charger output voltage vbus, check whether charger output voltage vbus drops to the preset threshold. If no, proceed to step S27; if yes, proceed to step S28. S27, i++, that is, continue to increase the charging current by 100mA and proceed to step S24; S28. Use this current as the maximum current value for the load (100*(i+1)ma (milliamperes)). As can be seen from the above, this invention determines the maximum current value to be set based on whether it is in EPP or BPP mode. It starts with a load of 100mA, increasing the load by 100mA every 100ms. After each load increase, the change in VBUS is detected. If VBUS drops to a specific threshold, the load current increase stops, and this current is consistently used as the maximum allowable charging current throughout the subsequent charging process. If the charger's power supply capability is not problematic, and the VBUS does not significantly drop even after the current reaches the maximum allowable value, then the maximum allowable current of the charging protocol is used for charging.

[0095] This invention, based on the charging protocol, takes into account objective factors such as charger quality issues and poor coil alignment, which can lead to charging failures due to the actual charging capacity not meeting the requirements of the normal charging protocol. After confirming the specific charging protocol, it starts with a small current of 100mA to gradually test the charger's actual power supply capacity. Once the actual power supply capacity of the charger is reached, the load current is not increased further, thus avoiding charging failures caused by excessive load.

[0096] Exemplary device like Figure 3 As shown in the figure, an embodiment of the present invention provides a dynamic load current adjustment device based on wireless charging, the device comprising: The charging capability assessment module 310 is used to monitor the charging voltage change at the charger output terminal in real time when the charger is connected, and to obtain the power supply capability of the charger output terminal based on the monitored charging voltage change at the charger output terminal. The charging mode determination module 320 is used to determine whether the current wireless charging type is Extended Power Distribution (EPP) or Basic Power Distribution (BPP) when a device is detected connected to a charger, and to set the corresponding maximum input current threshold according to the different charging types. When the current wireless charging type is determined to be Extended Power Distribution (EPP), the maximum input current threshold corresponding to Extended Power Distribution (EPP) is set; and the maximum input current threshold corresponding to Extended Power Distribution (EPP) is obtained. When the current wireless charging type is determined to be Basic Power Distribution (BPP), the maximum input current threshold corresponding to Basic Power Distribution (BPP) is set; and the maximum input current threshold corresponding to Basic Power Distribution (BPP) is obtained. The dynamic adjustment module 330 is used to start charging from a preset small current load according to the power supply capacity of the charger output terminal, gradually adjust the charging current, and gradually increase the charging current to a matching charging current by a predetermined amount to ensure that the increase in charging current matches the power supply capacity of the output terminal. The current-limiting charging control module 340 is used to monitor the charging voltage change at the charger output terminal. When the charging voltage gradually drops to a preset danger threshold, the control stops increasing the charging current and uses the current charging current value as the safe maximum charging current value. In subsequent charging, the charging current value is continuously maintained at the safe maximum charging current value until charging is complete. The maximum current charging control module 350 is used to increase the charging current each time the load is applied and to detect the change in the charging voltage VBUS at the output terminal of the charger. When the charging current of the charger reaches the maximum current allowed by the corresponding charging mode, and the charging voltage VBUS still does not drop to the preset danger threshold, the charger will control the charging to use the maximum current allowed by the corresponding charging protocol mode for continuous charging, as described above.

[0097] Based on the above embodiments, the present invention also provides an electronic device, the schematic diagram of which can be as follows: Figure 4 As shown. The electronic device includes a processor, memory, network interface, display screen, and database connected via a system bus. One or more programs are stored in the memory and configured to be executed by one or more processors. The one or more programs include methods for performing any of the methods described in the above embodiments.

[0098] The memory refers to the physical device used to store data and program instructions. Specifically, it can be implemented using flash memory chips, solid-state drives, or magnetic storage media. Its function is to save the maximum input current threshold corresponding to the extended power distribution (EPP) and the maximum input current threshold corresponding to the basic power distribution (BPP).

[0099] The processor refers to the arithmetic unit that executes program instructions. Specifically, it can be implemented using a central processing unit, a microcontroller, or an application-specific integrated circuit. Its function is to run the stored program code to perform operations such as determining whether the current wireless charging type is Extended Power Distribution (EPP) or Basic Power Distribution (BPP) and dynamically adjusting the load current.

[0100] The program refers to a set of code containing executable instructions, which can be implemented using embedded software, firmware, or operating system-level applications. Its function is to monitor changes in the charging voltage at the charger output, determine whether the current wireless charging type is Extended Power Distribution (EPP) or Basic Power Distribution (BPP), and dynamically adjust the charging load current.

[0101] Specifically, the processor is controlled to execute the following instructions: When the charger is connected, the charging voltage change at the charger output terminal is monitored in real time. Based on the monitored charging voltage change at the charger output terminal, the power supply capacity of the charger output terminal is obtained. Based on the power supply capacity of the charger output, start charging from a preset small current load, gradually adjust the charging current, and gradually increase the charging current to a matching charging current by a predetermined amount to ensure that the increase in charging current matches the power supply capacity of the output. At the same time, the charger monitors the charging voltage at the output terminal. When the charging voltage gradually drops to a preset danger threshold, the charger stops increasing the charging current and uses the current value as the safe maximum charging current value. During subsequent charging, the charging is maintained at the safe maximum charging current value until charging is complete, as described above.

[0102] The step of monitoring the charging voltage change at the charger output terminal in real time when the charger is connected, and obtaining the power supply capacity of the charger output terminal based on the monitored charging voltage change, includes: When a device is detected connected to the charger, determine whether the current wireless charging type is Extended Power Distribution (EPP) or Basic Power Distribution (BPP), and set the corresponding maximum input current threshold according to the different charging types. When the current wireless charging type is determined to be Extended Power Distribution (EPP), the maximum input current threshold corresponding to EPP is set; the maximum input current threshold set for EPP is obtained.

[0103] The step of monitoring the charging voltage change at the charger output terminal in real time when the charger is connected, and obtaining the power supply capacity of the charger output terminal based on the monitored charging voltage change, includes: When the current wireless charging type is determined to be Basic Power Distribution (BPP), the maximum input current threshold corresponding to BPP is set; the maximum input current threshold set for BPP is obtained.

[0104] The step of monitoring the charging voltage change at the charger output terminal in real time when the charger is connected, and obtaining the power supply capacity of the charger output terminal based on the monitored charging voltage change, includes: When the testing device is plugged into the charger for the first time, the charging capability assessment of the charger will begin for the first time; if the charging capability assessment has been performed before, the previous assessment results will be used.

[0105] The step of starting charging from a preset low current load based on the obtained power supply capacity of the charger output terminal, gradually adjusting the charging current, and gradually increasing the charging current by a predetermined amount to a matching charging current, ensuring that the increase in charging current matches the power supply capacity of the output terminal, includes: Based on the power supply capacity of the charger output, start charging from a preset low current of 100 mA, gradually adjust the charging current, and gradually increase the charging current to the matching charging current by a predetermined amount. Every 100 milliseconds, increase the load by 100 mA to ensure that the increase in charging current matches the power supply capacity of the output.

[0106] The step of monitoring the charging voltage change at the charger output terminal, and controlling the cessation of increasing the charging current when the charging voltage gradually decreases to a preset danger threshold, and taking the charging current value at this point as the safe maximum charging current value, includes: Each time the charging current is increased under load, the change in the charging voltage VBUS at the charger output terminal is detected. When the charging voltage VBUS gradually drops to the preset danger threshold, the increase in the charging current is stopped, and the charging current value at this time is taken as the safe maximum charging current value.

[0107] The step of monitoring the charging voltage change at the charger output terminal, and controlling the cessation of increasing the charging current when the charging voltage gradually decreases to a preset danger threshold, and taking the charging current value at this point as the safe maximum charging current value, includes: Each time the load is applied and the charging current is increased, the change in the charging voltage VBUS at the charger output terminal is detected. If the charger's charging current reaches the maximum allowable current for the corresponding charging mode, and the charging voltage VBUS still does not drop to the preset danger threshold, then the charger will control the charging to use the maximum allowable current for the corresponding charging protocol mode for continuous charging.

[0108] This application further proposes a computer-readable storage medium that, when the instructions in the storage medium are executed by the processor of an electronic device, enables the electronic device to perform a dynamic load current adjustment method based on wireless charging; as described above.

[0109] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A method for dynamically adjusting the load current based on wireless charging, characterized in that, include: When the charger is connected, the charging voltage change at the charger output terminal is monitored in real time. Based on the monitored charging voltage change at the charger output terminal, the power supply capacity of the charger output terminal is obtained. Based on the power supply capacity of the charger output, start charging from a preset small current load, gradually adjust the charging current, and gradually increase the charging current to a matching charging current by a predetermined amount to ensure that the increase in charging current matches the power supply capacity of the output. At the same time, the charger monitors the charging voltage at the output terminal. When the charging voltage gradually drops to a preset danger threshold, the charger stops increasing the charging current and uses the current value as the safe maximum charging current value. During subsequent charging, continue charging at the safe maximum charging current value until charging is complete.

2. The method for dynamic adjustment of load current based on wireless charging according to claim 1, characterized in that, The step of monitoring the charging voltage change at the charger output terminal in real time when the charger is connected, and obtaining the power supply capacity of the charger output terminal based on the monitored charging voltage change, includes: When a device is detected connected to the charger, determine whether the current wireless charging type is Extended Power Distribution (EPP) or Basic Power Distribution (BPP), and set the corresponding maximum input current threshold according to the different charging types. When the current wireless charging type is determined to be Extended Power Distribution (EPP), the maximum input current threshold corresponding to EPP is set; the maximum input current threshold set for EPP is obtained.

3. The method for dynamic adjustment of load current based on wireless charging according to claim 2, characterized in that, The step of monitoring the charging voltage change at the charger output terminal in real time when the charger is connected, and obtaining the power supply capacity of the charger output terminal based on the monitored charging voltage change, includes: When the current wireless charging type is determined to be Basic Power Distribution (BPP), the maximum input current threshold corresponding to BPP is set; the maximum input current threshold set for BPP is obtained.

4. The method for dynamic adjustment of load current based on wireless charging according to claim 1, characterized in that, The step of monitoring the charging voltage change at the charger output terminal in real time when the charger is connected, and obtaining the power supply capacity of the charger output terminal based on the monitored charging voltage change, includes: When the testing device is plugged into the charger for the first time, the charging capability assessment of the charger will begin for the first time; if the charging capability assessment has been performed before, the previous assessment results will be used.

5. The method for dynamic adjustment of load current based on wireless charging according to claim 1, characterized in that, The steps of starting charging from a preset low current load based on the obtained power supply capacity of the charger output terminal, gradually adjusting the charging current, and gradually increasing the charging current by a predetermined amount to a matching charging current, ensuring that the increase in charging current matches the power supply capacity of the output terminal, include: Based on the power supply capacity of the charger output, start charging from a preset low current of 100 mA, gradually adjust the charging current, and gradually increase the charging current to the matching charging current by a predetermined amount. Every 100 milliseconds, increase the load by 100 mA to ensure that the increase in charging current matches the power supply capacity of the output.

6. The method for dynamic adjustment of load current based on wireless charging according to claim 1, characterized in that, The step of monitoring the charging voltage change at the charger output terminal, and controlling the cessation of increasing the charging current when the charging voltage gradually drops to a preset danger threshold, and taking the charging current value at this point as the safe maximum charging current value, includes: Each time the charging current is increased under load, the change in the charging voltage VBUS at the charger output terminal is detected. When the charging voltage VBUS gradually drops to the preset danger threshold, the increase in the charging current is stopped, and the charging current value at this time is taken as the safe maximum charging current value.

7. The method for dynamic adjustment of load current based on wireless charging according to claim 1, characterized in that, The step of monitoring the charging voltage change at the charger output terminal, and controlling the cessation of increasing the charging current when the charging voltage gradually drops to a preset danger threshold, and taking the charging current value at this point as the safe maximum charging current value, includes: Each time the load is applied and the charging current is increased, the change in the charging voltage VBUS at the charger output terminal is detected. If the charger's charging current reaches the maximum allowable current for the corresponding charging mode, and the charging voltage VBUS still does not drop to the preset danger threshold, then the charger will control the charging to use the maximum allowable current for the corresponding charging protocol mode for continuous charging.

8. A dynamic load current adjustment device based on wireless charging, characterized in that, The device includes: The charging capability assessment module is used to monitor the charging voltage change at the charger output terminal in real time when the charger is connected, and to obtain the power supply capability of the charger output terminal based on the monitored charging voltage change. The charging mode determination module is used to determine whether the current wireless charging type is Extended Power Distribution (EPP) or Basic Power Distribution (BPP) when a device is detected connected to a charger, and to set the corresponding maximum input current threshold according to the different charging types. When the current wireless charging type is determined to be EPP, the maximum input current threshold corresponding to EPP is set; and the maximum input current threshold corresponding to EPP is obtained. When the current wireless charging type is determined to be BPP, the maximum input current threshold corresponding to BPP is set; and the maximum input current threshold corresponding to BPP is obtained. The dynamic adjustment module is used to start charging from a preset small current load based on the power supply capacity of the charger output terminal, gradually adjust the charging current, and gradually increase the charging current to a matching charging current by a predetermined amount to ensure that the increase in charging current matches the power supply capacity of the output terminal. The current-limiting charging control module is used to monitor the charging voltage change at the charger output terminal. When the charging voltage gradually drops to a preset danger threshold, the module stops increasing the charging current and uses the current value as the safe maximum charging current value. In subsequent charging, the module continues to charge using the safe maximum charging current value until charging is complete. The maximum current charging control module is used to increase the charging current each time the load is applied and to detect the change in the charging voltage VBUS at the charger output terminal. When the charger's charging current reaches the maximum current allowed by the corresponding charging mode, and the charging voltage VBUS still does not drop to the preset danger threshold, the module controls the charging to use the maximum current allowed by the corresponding charging protocol mode for continuous charging.

9. An electronic device, characterized in that, It includes a memory, and one or more programs, wherein one or more programs are stored in the memory and configured to be executed by one or more processors, the one or more programs comprising the means for performing the method as described in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, When the instructions in the storage medium are executed by the processor of the electronic device, the electronic device is able to perform the method as described in any one of claims 1-7.

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