Multi-protocol adaptive and battery matching mobile phone extreme charging adaptation method

Abstract

This invention provides a multi-protocol adaptive and battery-matching method for mobile phone high-speed charging, relating to the field of mobile phone high-speed charging technology. The method includes: sending query signals for different charging protocols to the mobile phone to be charged; determining the initial charging voltage and current parameters of the mobile phone to be charged; charging the mobile phone to be charged; receiving charging status monitoring data from the mobile phone to be charged; dynamically fine-tuning the output power; continuously monitoring the communication stability of the adaptation protocols, intelligently adjusting voltage and current compensation values ​​to optimize the adaptation effect, and updating the protocol priority list; and real-time monitoring of voltage fluctuations, current anomalies, and temperature exceeding limits during the charging process, executing charging protection strategies when safety thresholds are triggered. This invention, through multi-protocol adaptive matching, dynamic power adjustment, and multiple safety protection mechanisms, enables efficient and rapid charging protocol interoperability, automatically optimizes charging parameters to approximate the mobile phone's maximum charging capacity, and dynamically fine-tunes the power during the entire monitoring process, effectively improving charging efficiency and speed.

Description

Technical Field

[0001] This invention relates to the field of mobile phone charging technology, and in particular to a mobile phone charging adaptation method that combines multi-protocol adaptive charging with battery matching. Background Technology

[0002] Fast charging, or ultra-fast charging technology, is a revolutionary innovation in the current smartphone industry. It uses ultra-high power (generally 60W or higher, even 200W+) to quickly replenish the device's power in a very short time, completely liberating users from "battery anxiety." Its core principle lies in significantly increasing charging power (power = voltage x current) and generally employing a dual-cell system, which distributes the current to two batteries simultaneously, thereby multiplying the charging speed while effectively distributing heat and ensuring safety. Major brands each have their own proprietary fast charging protocols, which require deeply customized chargers, data cables, and the phone's internal chips to work together to trigger the highest power ultra-fast mode.

[0003] In practical use, FastCharge technology means that in just ten minutes, like brushing your teeth or washing your face, your phone's battery can be restored from low to 50% or even over 80%, greatly improving the convenience and efficiency of daily use. For this technology, users are most concerned about its impact on battery life. In fact, manufacturers have controlled battery wear within a reasonable range through intelligent control strategies (such as using peak power only at low battery levels and switching to trickle charging after 80%) and advanced heat dissipation designs. The convenience it brings far outweighs any minor impact on the battery. However, it is crucial that users use the official original charging kit. Any third-party accessories may not be able to activate FastCharge mode and may even pose safety hazards. In short, FastCharge has moved from a cutting-edge technology to widespread adoption, redefining the charging experience of mobile devices and becoming one of the most practical core functions of modern mobile phones.

[0004] Conventional mobile phone charging methods often suffer from poor protocol compatibility and the inability to automatically select the optimal option, resulting in the inability to achieve the full charging efficiency. Furthermore, rigid charging parameters cannot dynamically adjust the power according to the real-time status of the phone to approach the optimal charging capacity, thus limiting the charging speed.

[0005] To address the shortcomings of the existing technology, this technical solution proposes a mobile phone fast charging adaptation method that combines multi-protocol adaptive charging with battery matching. Summary of the Invention

[0006] This invention provides a mobile phone extreme charging adaptation method with multi-protocol adaptive and battery matching, which solves the defects of the prior art, such as poor protocol compatibility and inability to automatically select the best match, resulting in the inability to achieve extreme charging efficiency; and rigid charging parameters that cannot dynamically adjust the power according to the real-time status of the mobile phone to approach the optimal charging capacity, thus limiting the charging speed.

[0007] On one hand, the present invention provides a mobile phone fast charging adaptation method with multi-protocol adaptive and battery matching, including:

[0008] S1: According to the preset protocol priority list, send query signals for different charging protocols to the mobile phone to be charged in sequence until a valid protocol interoperability success response is received, and the initial adaptation protocol is obtained.

[0009] S2: Based on the initial adaptation protocol, determine the initial charging voltage and current parameters of the mobile phone to be charged, and obtain the maximum allowable charging parameters;

[0010] S3: Charges the phone to be charged according to the maximum allowable charging parameters and the preset phased charging strategy;

[0011] S4: Receives charging status monitoring data from the mobile phone to be charged, including battery voltage, charging current, and interface temperature; and dynamically adjusts the output power based on the charging status monitoring data.

[0012] S5: Continuously monitors the communication stability of the adapted protocol. If an anomaly occurs, it automatically switches to the suboptimal compatible protocol, intelligently adjusts the voltage and current compensation values ​​to optimize the adaptation effect, and updates the protocol priority list.

[0013] S6: Monitor voltage fluctuations, current anomalies, and temperature exceeding limits during the charging process in real time, and execute charging protection strategies when safety thresholds are triggered; record the protocol type, parameter curves, and battery status change data for this charging session.

[0014] According to the multi-protocol adaptive and battery matching mobile phone fast charging adaptation method provided by the present invention, step S2, the step of obtaining the highest allowable charging parameters includes:

[0015] S21: After successful protocol interoperability, read the power capability information fed back by the mobile phone through the initial adaptation protocol. The power capability information includes the supported voltage-current combinations.

[0016] S22: Select the voltage-current combination with the highest output power as the initial allowable charging parameters;

[0017] S23: Compare the initial allowed charging parameters with the maximum output capability of the Extreme Charger adapter, and take the lower parameter value of the two as the highest allowed charging parameter to be executed.

[0018] According to the multi-protocol adaptive and battery matching mobile phone fast charging adaptation method provided by the present invention, in step S3, the staged charging strategy includes:

[0019] When the phone battery level is below the first threshold, constant current charging is performed using the highest permissible charging parameters.

[0020] When the phone battery voltage reaches its nominal upper limit voltage, it switches to constant voltage charging and allows the charging current to gradually decrease as the battery saturation increases.

[0021] When the charging current drops to the second threshold, continuous trickle charging is used until the battery is fully charged.

[0022] According to the multi-protocol adaptive and battery matching mobile phone fast charging adaptation method provided by the present invention, step S3, the step of using continuous trickle charging includes:

[0023] During the continuous trickle charging phase, an intermittent pulse charging method is used;

[0024] During the interval between each charging pulse, the open-circuit voltage of the mobile phone battery is detected;

[0025] When the open-circuit voltage detected for a preset number of consecutive cycles reaches the battery's full-charge voltage, the battery is determined to be fully charged, and charging output is stopped.

[0026] According to the multi-protocol adaptive and battery-matching mobile phone fast charging adaptation method provided by the present invention, step S4, the step of dynamically fine-tuning the output power based on charging state monitoring data, includes:

[0027] S41: If the battery voltage drops abnormally or the interface temperature exceeds the warning threshold, the output current will be reduced by a preset step value within the range of the maximum allowable charging parameters.

[0028] S42: If the battery voltage is stable and the interface temperature is below the warning threshold, the output current will be increased by a preset step value to approach but not exceed the maximum allowable charging parameters.

[0029] According to the multi-protocol adaptive and battery-matching mobile phone fast charging adaptation method provided by the present invention, step S5, the step of intelligently adjusting the voltage and current compensation values ​​to optimize the adaptation effect includes:

[0030] S51: After switching to the suboptimal compatibility protocol, perform trial charging with initial safety parameters lower than the maximum permissible charging parameters;

[0031] S52: Monitor charging efficiency, voltage ripple, and temperature change rate within a preset observation period;

[0032] S53: If the charging status is stable, the charging current is gradually increased according to the preset gradient, and the protocol communication quality and temperature rise are evaluated after each step of stable operation.

[0033] S54: If communication is stable and temperature rise is normal, record the current compensation value as the optimization parameter; if fluctuations occur, adjust the compensation value according to the fluctuation range until a stable optimal adaptation parameter is obtained.

[0034] According to the multi-protocol adaptive and battery matching mobile phone fast charging adaptation method provided by the present invention, step S53, the method for determining and adjusting the preset gradient includes:

[0035] S531: The preset gradient is set based on the difference between the maximum current supported by the suboptimal compatibility protocol and the initial safety parameters;

[0036] S532: If voltage ripple is detected to exceed the permissible range during the boosting process, the boosting will be paused and the gradient value reduced.

[0037] S533: After obtaining stable optimal adaptation parameters, the gradient value of the stable optimal adaptation parameters is recorded as the recommended gradient of the combination of the protocol and the mobile phone model.

[0038] According to the multi-protocol adaptive and battery matching mobile phone fast charging adaptation method provided by the present invention, step S54, the step of adjusting the compensation value according to the fluctuation amplitude includes:

[0039] S541: Quantify the fluctuation amplitude based on the communication interruption frequency and the percentage of voltage ripple exceeding the permissible range;

[0040] S542: Determine the corresponding adjustment step size of the compensation value based on the different levels of fluctuation. The larger the fluctuation, the larger the adjustment step size.

[0041] S543: Reduce the compensation value of the charging current according to the determined reduction step size, and re-evaluate the charging status within the preset observation period.

[0042] S544: If the charging status still cannot be stabilized after a preset number of consecutive reductions, the suboptimal compatibility protocol is determined to have failed to adapt, and the next compatible protocol in the protocol priority list is tried instead.

[0043] According to the multi-protocol adaptive and battery matching mobile phone fast charging adaptation method provided by the present invention, in step S6, the charging protection strategy includes:

[0044] When a short circuit is detected, or if any of the voltage, current, or temperature exceeds the absolute safety threshold, power output shall be stopped immediately.

[0045] When continuous overheating or slight current abnormality is detected, the output power is gradually reduced according to the preset steps; continuous overheating refers to the temperature being above the warning threshold for 10 seconds; slight current abnormality refers to the current fluctuation exceeding ±10% but not reaching the serious standard.

[0046] If the abnormal conditions disappear after the protection is triggered, a new round of protocol interoperability and charging process will be automatically initiated after a preset safety interval.

[0047] According to the multi-protocol adaptive and battery matching mobile phone fast charging adaptation method provided by the present invention, step S6, the step of gradually reducing the output power according to a preset step includes:

[0048] S61: Determine the initial step size of the power drop based on the type of the triggered anomaly. The initial step size for a temperature anomaly is greater than that for a minor current anomaly.

[0049] S62: Maintain the output for a preset stable observation time at each power level;

[0050] S63: If the abnormal situation persists during the stable observation period, the power level will continue to decrease to the next power level; if the abnormal situation disappears, the current power level will be recorded as the safe operating power and charging will continue.

[0051] S64: If the power has gradually decreased to the preset minimum safe output threshold and the abnormal situation has not been eliminated, it is determined to be a quasi-serious fault, triggering a protection action to immediately stop the power output.

[0052] The mobile phone fast charging adaptation method provided by this invention, which features multi-protocol adaptive matching and battery matching, achieves efficient and rapid charging protocol interoperability through multi-protocol adaptive matching, dynamic power adjustment, and multiple safety protection mechanisms. It automatically optimizes charging parameters to approximate the phone's maximum charging capacity and dynamically fine-tunes the power during the entire process, effectively improving charging efficiency and speed. Simultaneously, the system has communication stability monitoring and automatic protocol switching functions. Combined with intelligent compensation strategies and a tiered protection mechanism, it significantly enhances the stability and safety of the charging process. Furthermore, it can continuously learn and optimize itself by recording charging data, thereby extending battery life and providing users with a fast charging experience that balances efficiency, safety, and intelligent adaptation. Attached Figure Description

[0053] To more clearly illustrate the technical solutions in this 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 some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0054] Figure 1 This is a flowchart of the mobile phone fast charging adaptation method with multi-protocol adaptive and battery matching provided in Embodiment 1 of the present invention;

[0055] Figure 2 This is a flowchart illustrating how intelligently adjusting voltage and current compensation values ​​optimizes the adaptation effect in Embodiment 1 of the present invention.

[0056] Figure 3This is a flowchart of adjusting the compensation value according to the fluctuation range in Embodiment 1 of the present invention;

[0057] Figure 4 This is a timing diagram of multi-protocol adaptive charging adaptation in Embodiment 1 of the present invention. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0059] Example 1:

[0060] The following is combined with Figures 1-4 This invention describes a multi-protocol adaptive and battery-matching mobile phone fast charging adaptation method.

[0061] like Figures 1-4 As shown, the multi-protocol adaptive and battery-matching mobile phone fast charging adaptation method provided in this embodiment of the invention includes:

[0062] S1: Following a preset protocol priority list, the adapter sequentially sends query signals for different charging protocols to the phone to be charged until a valid protocol interoperability success response is received, thus obtaining the initial compatible protocol. The protocol priority list is generated based on historical charging success rates, protocol compatibility statistics, or user-defined settings. Common protocols include USB PD (USB Power Delivery), QC (Quick Charge), and SCP (SuperCharge). The query signal is a digital pulse or analog voltage signal emitted by the adapter to detect the protocols supported by the phone. The protocol interoperability success response is a specific code returned by the phone.

[0063] S2: Based on the initial adaptation protocol, determine the initial charging voltage and current parameters of the mobile phone to be charged, and obtain the maximum allowable charging parameters.

[0064] Step S2, the steps to obtain the maximum allowable charging parameters, include:

[0065] S21: After successful protocol interoperability, read the power capability information fed back by the mobile phone through the initial adaptation protocol. This information includes the supported voltage-current combinations. Power capability information is usually transmitted in the form of data objects.

[0066] S22: Based on the supported voltage-current combinations, select the combination with the highest output power as the initial allowable charging parameters. Prioritize high-power combinations, but avoid exceeding the chemical limits of the phone battery.

[0067] S23: Compare the initial allowed charging parameters with the maximum output capacity of the adapter itself, and take the lower parameter value as the final maximum allowed charging parameter. The adapter supports dynamic derating, which can adjust the maximum output capacity in real time based on temperature. The specific steps include:

[0068] When the adapter starts up, preset thermal management parameters are loaded. These parameters include: room temperature reference value, derating initiation temperature, absolute maximum temperature, rated maximum output power, and derating curve. The room temperature reference value is typically set at 25°C. The derating initiation temperature is a threshold below the maximum safe temperature, such as 60°C. When the temperature at critical points inside the adapter is below this value, the adapter outputs at its nominal maximum capacity. The absolute maximum temperature is the absolute safe limit that the adapter hardware can withstand, such as 85°C. Once this temperature is reached, the output must be forcibly shut down immediately. The rated maximum output power refers to the maximum power that the adapter can continuously output under ideal cooling conditions. The derating curve defines how the output power decreases linearly or non-linearly with increasing temperature between the derating initiation temperature and the absolute maximum temperature.

[0069] S3: Charges the phone to be charged according to the maximum allowed charging parameters and the preset phased charging strategy.

[0070] In step S3, the phased charging strategy includes:

[0071] When the phone battery level drops below a first threshold, constant current charging is performed using the highest permissible charging parameters. The first threshold is typically set to 20%-30% of the battery level to avoid deep discharge due to the characteristics of lithium batteries. During the constant current charging phase, the current remains constant while the voltage gradually increases.

[0072] When the phone battery voltage reaches its nominal upper limit voltage, it switches to constant voltage charging, allowing the charging current to gradually decrease as the battery saturation increases. The nominal upper limit voltage depends on the battery type. During the constant voltage charging phase, the voltage remains constant, and the current naturally decreases to prevent overcharging.

[0073] When the charging current drops to the second threshold, continuous trickle charging is used until the battery is fully charged. The steps for continuous trickle charging include:

[0074] During the continuous trickle charging phase, an intermittent pulse charging method is employed. This intermittent pulse charging method reduces battery stress and improves full-charge accuracy through periodic charge-rest cycles.

[0075] During the interval between each charging pulse, the open-circuit voltage of the phone battery is measured. Open-circuit voltage (OCV), measured under no-load conditions, more accurately reflects the battery's true charge level. It is essential to ensure the charging circuit is completely disconnected during testing.

[0076] When the open-circuit voltage detected for a preset number of consecutive cycles reaches the battery's full-charge voltage, the battery is determined to be fully charged, and charging output stops. The preset number of cycles can be set to 3-5 to improve reliability. Alternatively, a voltage change rate (dV / dt) method can be used to stop charging when the voltage change slows down. Specific methods include:

[0077] When charging enters its final stage, the system officially initiates dV / dt stop monitoring. For example, the battery voltage has reached the nominal upper limit voltage, and the system has switched to constant voltage charging mode, while the charging current has dropped to a low level.

[0078] The system samples the voltage across the battery terminals with high precision at fixed time intervals; it calculates the voltage change and rate of change between two consecutive samples, expressed by the following formula:

[0079]

[0080]

[0081] Where ΔV represents the voltage change, V previous V represents the previous sampled voltage. current dV / dt represents the current sampled voltage, and dV / dt represents the rate of change of voltage.

[0082] A very small voltage change rate threshold (dV / dt) is preset. threshold This threshold indicates that the battery is nearly fully charged, and the rate of voltage rise becomes negligible. For example, it can be set to 0.1 mV / min or 0.05 mV / min. This threshold needs to be calibrated according to the battery's chemistry.

[0083] The system continuously compares the calculated real-time dV / dt value with a preset voltage change rate threshold. When the calculated dV / dt value is less than or equal to the threshold for N consecutive times, it is determined that the voltage change has sufficiently "slowed down" and the battery has reached a fully charged state. Once the stop condition is met, the charger immediately stops outputting charging current, and the charging process ends.

[0084] S4: Receives charging status monitoring data from the phone being charged, including battery voltage, charging current, and interface temperature. It then dynamically fine-tunes the output power based on this charging status monitoring data.

[0085] In step S4, the step of dynamically fine-tuning the output power based on the charging status monitoring data includes:

[0086] S41: If the battery voltage experiences an abnormal drop, the output current will be reduced by a preset step value within the maximum allowable charging parameters. An abnormal drop refers to a sudden voltage decrease exceeding 0.1V, which may indicate increased battery internal resistance or poor connection. The preset step value is typically 0.1A-0.5A, and the reduction formula is as follows:

[0087]

[0088] Among them, I new Indicates the current value after adjustment, I old This represents the current value before the adjustment, ΔI. step This indicates the step value for current reduction.

[0089] S42: If the interface temperature exceeds the warning threshold, the output current will be reduced by a preset step value within the maximum allowable charging parameter range. The warning threshold is usually set at 45-50℃, based on the safety limits of the interface material. Temperature monitoring can be achieved using an NTC thermistor (negative temperature coefficient thermistor).

[0090] S43: If the battery voltage is stable and the interface temperature is below the warning threshold, attempt to increase the output current by a preset step value to approach but not exceed the maximum allowable charging parameter. The upward step value can be smaller than the downward step value, such as 0.05A, to avoid oscillation. A PID control algorithm can also be used to dynamically adjust the step value to achieve smoother power fine-tuning. Specific steps include:

[0091] Define the control objectives, including the target battery voltage and the target charging current; define the physical quantities that need to be monitored and controlled in real time, namely the real-time monitored battery voltage or charging current. Preset the proportional coefficient (Kp), integral coefficient (Ki), and derivative coefficient (Kd).

[0092] The actual values ​​of the process variable (PV) are read at fixed control cycles, and the current deviation is calculated using the following formula:

[0093]

[0094] Where e(t) represents the current deviation, Setpoint represents the control target, and PV is the process variable.

[0095] Finally, the output value of the PID controller is calculated, expressed by the formula:

[0096]

[0097] Where Output(t) is the controller's output value, t is time, and Δt is the time change. The PID controller's output Output(t) is a theoretical value that needs to be mapped to a control signal for the charger's DAC (digital-to-analog converter) or PWM (pulse width modulation) module, thereby directly setting the adapter's output current or voltage. Specifically:

[0098]

[0099] Among them, Icommand Indicates a new current command, I previous Output(t) represents the control output value at the previous moment, and Output(t) represents the output increment of the current control cycle.

[0100] The calculated new current command I command Send it to the hardware for execution, changing the adapter's actual output.

[0101] The entire process (S1 to S4) is executed cyclically within each control cycle, achieving continuous, dynamic, and closed-loop precision adjustment.

[0102] S5: Continuously monitors the communication stability of the adapted protocol. If an anomaly occurs, it automatically switches to the suboptimal compatible protocol, intelligently adjusts the voltage and current compensation values ​​to optimize the adaptation effect, and updates the protocol priority list.

[0103] Step S5, the steps of intelligently adjusting voltage and current compensation values ​​to optimize the adaptation effect include:

[0104] S51: After switching to the suboptimal compatibility protocol, perform trial charging with initial safety parameters lower than the maximum permissible charging parameters.

[0105] S52: Monitor charging efficiency, voltage ripple, and temperature change rate within a preset observation period. The observation period is generally 30-60 seconds. Voltage ripple is expressed as peak value or RMS value and must be less than 5%. Temperature change rate refers to the rate of temperature rise per unit time and should be less than 1℃ / s.

[0106] S53: If the charging status is stable, the charging current is gradually increased according to the preset gradient, and the protocol communication quality and temperature rise are evaluated after each step of stable operation.

[0107] In step S53, the method for determining and adjusting the preset gradient includes:

[0108] S531: The preset gradient is set based on the difference between the maximum current supported by the suboptimal compatibility protocol and the initial safety parameters.

[0109] S532: During the boosting process, if the voltage ripple factor is detected to exceed the permissible range, the boosting is paused and subsequent gradient values ​​are reduced. The voltage ripple factor is defined as the ratio of ripple voltage to DC voltage, and the permissible range is typically 1%-3%. The gradient reduction formula is:

[0110]

[0111] Where, ΔI gradient_new This indicates the new current increment step size. When the voltage ripple factor returns to normal and the system needs to continue attempting to increase the current, this new, smaller step size value will be used for fine-tuning. ΔI gradient_oldThis indicates the current boost step size used before adjustment, which is an initial step value calculated based on the difference between the maximum current supported by the protocol and the initial safe current. k is the attenuation factor.

[0112] S533: After obtaining stable optimal adaptation parameters, the gradient value under these parameters is recorded as the recommended gradient of the combination of protocol and mobile phone model.

[0113] S54: If communication is stable and temperature rise is normal, record the current compensation value as the optimization parameter. If fluctuations occur, adjust the compensation value according to the fluctuation range until a stable optimal adaptation parameter is obtained.

[0114] Step S54, the step of adjusting the compensation value according to the fluctuation range, includes:

[0115] S541: Quantify the fluctuation amplitude based on the communication interruption frequency and the percentage of voltage ripple exceeding the permissible range. The fluctuation amplitude index is expressed as:

[0116]

[0117] Where Q is the volatility index, f interrupt For communication interruption frequency, δ ripple The percentage of ripple exceeds the threshold, and w1 and w2 are weighting coefficients.

[0118] S542: Based on the different levels of fluctuation, determine the corresponding step size for adjusting the compensation value. The larger the fluctuation, the larger the step size. The specific levels are divided as follows: Q<5% is mild, step size 0.1A; 5%≤Q<10% is moderate, step size 0.2A; Q≥10% is severe, step size 0.5A.

[0119] S543: Reduce the compensation value of the charging current according to the determined downward adjustment step size, and return to step S52 to re-evaluate the charging status within the preset observation period.

[0120] S544: If the charging status still cannot be stabilized after a preset number of consecutive adjustments, the suboptimal compatible protocol adaptation is determined to have failed, and the system will attempt the next compatible protocol in the protocol priority list. The preset number of consecutive adjustments is usually 3 to avoid infinite looping. A timeout mechanism can also be introduced to force a switch when the total attempt time exceeds the limit.

[0121] S6: Monitors voltage fluctuations, current anomalies, and temperature exceeding limits during the charging process in real time, and executes charging protection strategies when safety thresholds are triggered. Records the protocol type, parameter curves, and battery status change data for this charging session.

[0122] In step S6, the charging protection strategy includes:

[0123] Power output will be immediately stopped when a short circuit, severe overvoltage, severe overcurrent, or temperature exceeding the absolute safety threshold is detected. The absolute safety thresholds include: short circuit current > 10A, overvoltage > 120% of nominal voltage, overcurrent > 150% of nominal current, and temperature > 80℃. The system must be locked after output is stopped and manually reset.

[0124] When persistent overheating or slight current abnormality is detected, the output power is gradually reduced according to preset steps. Persistent overheating refers to the temperature remaining above the warning threshold for 10 seconds; slight current abnormality refers to current fluctuations exceeding ±10% but not reaching the severe standard.

[0125] After the protection is triggered, if the abnormal conditions disappear, step S1 will be automatically retried after a preset safety interval, initiating a new round of protocol communication and charging process. The safety interval is usually 5-10 seconds to ensure system cooling or stability. A retry limit can also be added, such as permanently shutting down after 3 attempts until manual intervention.

[0126] The steps for gradually reducing the output power according to preset steps include:

[0127] S61: Determine the initial step size of the power reduction based on the type of triggered anomaly. The initial step size for temperature anomalies is greater than that for minor current anomalies. The initial step size for temperature anomalies is 20% of maximum power, and for current anomalies it is 10%. The size selection is based on the risk level.

[0128] S62: At each power level, maintain the output for a preset stable observation time. The stable observation time is typically 15-30 seconds, used to assess whether the anomaly persists.

[0129] S63: If the abnormal condition persists during the stable observation period, the power level will continue to decrease to the next step. If the abnormal condition disappears, the current power level will be recorded as the safe operating power and charging will continue. The safe operating power is used as a temporary limit for this charging session.

[0130] S64: If the power has gradually decreased to the preset minimum safe output threshold and the abnormal condition has not been eliminated, it is judged as a quasi-serious fault, triggering a protection action to immediately stop power output. The minimum safe output threshold can be dynamically adjusted based on battery state of health (SOH) data, specifically including:

[0131] S641: Acquire and define Battery State of Health (SOH) data. Battery state of health is typically a percentage value, representing the ratio of the battery's current actual capacity to its nominal capacity. SOH = (Current Actual Capacity / Nominal Capacity) × 100%. An SOH of 100% indicates the battery is like new; generally, an SOH below 80% is considered significantly aged and requires replacement. Acquisition methods include: For smart devices, the phone's operating system can accurately calculate SOH. The adapter can request and read this data from the phone via a high-speed data channel. If it cannot be obtained directly from the phone, the adapter can make a rough estimate based on historical charging data. For example, record the total amount of electricity required to charge from a specific low level to full charge and compare it with a reference value when the battery was new to estimate the degree of SOH degradation.

[0132] Establish a dynamic mapping relationship between SOH and critical protection thresholds. Pre-define a threshold adjustment rule table or calculation formula based on SOH. The core principle is: as SOH decreases, the various protection thresholds should tend to become more conservative.

[0133] Then adjust the maximum allowable charging parameters, specifically: Final allowable power = Min(R) P Max P P base ×f(SOH)). Wherein, R P Indicates the power requested by the phone, Max P P represents the adapter's maximum power. base This is the baseline power limit, and f(SOH) is a coefficient positively correlated with SOH. For example:

[0134] SOH≥90%: f(SOH)=1.0, no limit.

[0135] 80%≤SOH<90%: f(SOH)=0.8, limiting the maximum charging current to 80% of the new state.

[0136] SOH<80%: f(SOH)=0.5, adopting a more conservative half-power charging method, greatly reducing the load on aging batteries.

[0137] The minimum safe output threshold is adjusted by changing the fixed minimum threshold in the original scheme to a dynamic value. SOH ≥ 90%: Minimum safe output threshold = 0.5A. 80% ≤ SOH < 90%: Minimum safe output threshold = 0.7A. This means that if the abnormality persists when the power drops to 0.7A, the output will immediately stop, instead of attempting a lower 0.5A, because 0.7A may already be a dangerous power for an aging battery. SOH < 80%: Minimum safe output threshold = 1.0A. The protection action is more sensitive.

[0138] Adjust the temperature-related thresholds, specifically because the thermal stability of aged batteries is worse, so temperature warnings and derating points should be set earlier.

[0139] S642: Integrates SOH (State of Health) judgment logic into the charging process, including:

[0140] After successful interoperability of the S1 / S2 protocol, the SOH value is immediately obtained from the mobile phone or the internally estimated value is used.

[0141] In step S23, the above rules are applied, and the final decision is made using the "maximum allowable charging parameters" adjusted by SOH.

[0142] In the continuous monitoring of step S6, the temperature, current, and voltage thresholds dynamically adjusted according to SOH are used as the criteria for triggering protection actions.

[0143] When performing step S64, the "minimum safe output threshold" raised according to SOH is used as the final line of defense for determining whether it is a "quasi-serious fault".

[0144] In summary, the multi-protocol adaptive and battery-matching mobile phone fast charging adaptation method achieves efficient and rapid charging protocol interoperability through multi-protocol adaptive matching, dynamic power adjustment, and multiple safety protection mechanisms. It automatically optimizes charging parameters to approximate the phone's maximum charging capacity and dynamically fine-tunes the power during the entire process, effectively improving charging efficiency and speed. Simultaneously, the system features communication stability monitoring and automatic protocol switching, combined with intelligent compensation strategies and tiered protection mechanisms, significantly enhancing the stability and safety of the charging process. Furthermore, it can continuously learn and optimize by recording charging data, thereby extending battery life and providing users with a fast charging experience that balances efficiency, safety, and intelligent adaptation.

[0145] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0146] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for multi-protocol adaptive and battery matching mobile phone extreme charging adaptation, characterized in that, Comprise: S1: according to the preset protocol priority list, in turn to the mobile phone to be charged to send different charging protocol inquiry signal, until receiving the effective protocol interworking success response, get the initial adaptation protocol; S2: based on the initial adaptation protocol, determine the initial charging voltage and current parameters of the mobile phone to be charged, get the highest allowable charging parameter; S3: according to the highest allowable charging parameter and the preset stage charging strategy, charge for the mobile phone to be charged; S4: receive the charging state monitoring data of the mobile phone to be charged, including battery voltage, charging current and interface temperature;And based on the charging state monitoring data, dynamically adjust the output power; S5: continuously monitor the communication stability of the adaptation protocol, if abnormal, automatically switch to the suboptimal compatible protocol, intelligently adjust the voltage and current compensation value to optimize the adaptation effect, and update the protocol priority list; In step S5, the step of intelligently adjusting the voltage and current compensation value to optimize the adaptation effect comprises: S51: after switching to the suboptimal compatible protocol, try to charge with the initial safety parameter lower than the highest allowable charging parameter; S52: in a preset observation period, monitor the charging efficiency, voltage ripple and temperature change rate; S53: if the charging state is stable, gradually increase the charging current according to the preset gradient, and evaluate the protocol communication quality and temperature rise after stable operation at each promotion ladder; The determination and adjustment method of the preset gradient comprises: S531: the preset gradient is set according to the difference between the maximum current supported by the suboptimal compatible protocol and the initial safety parameter; S532: in the promotion process, if the voltage ripple exceeds the permitted range, the promotion is suspended and the gradient value is reduced; S533: after obtaining the stable optimal adaptation parameter, the gradient value of the stable optimal adaptation parameter is recorded as the recommended gradient of the protocol and mobile phone model combination; S54: if the communication is stable and the temperature rise is normal, record the current compensation value as the optimization parameter;If there is fluctuation, the compensation value is adjusted according to the fluctuation amplitude until the stable optimal adaptation parameter is obtained, which comprises: S541: according to the communication interruption frequency and the percentage of voltage ripple exceeding the permitted range, the fluctuation amplitude is quantified; S542: according to different levels of the fluctuation amplitude, determine the corresponding compensation value step-down step, the larger the fluctuation amplitude, the larger the step-down step; S543: reduce the compensation value of the charging current according to the determined step-down step, and reevaluate the charging state in the preset observation period; S544: if the charging state cannot be stabilized after continuous preset times of adjustment, it is determined that the suboptimal compatible protocol adaptation fails, and the next compatible protocol in the protocol priority list is tried; S6: real-time monitor voltage fluctuation, current anomaly and temperature overrun in the charging process, trigger the safety threshold to execute the charging protection strategy;Record the protocol type, parameter curve and battery state change data of this charging.

2. The method of claim 1, wherein the method further comprises: In step S2, the step of obtaining the highest allowable charging parameter comprises: S21: After the protocol interworking is successful, power capability information fed back by the mobile phone through the initial adaptation protocol is read, and the power capability information includes a supportable voltage-current combination; S22: A voltage-current combination with the highest output power is selected as an initial allowed charging parameter; S23: The initial allowed charging parameter is compared with the maximum output capability of the polar charging adapter, and a lower parameter value of the two is taken as the highest allowed charging parameter finally executed.

3. The method of claim 1, wherein the method further comprises: In step S3, the phased charging strategy includes: When the battery level of the mobile phone is lower than a first threshold value, constant current charging is performed using the highest allowed charging parameter; When the battery voltage of the mobile phone reaches a nominal upper limit voltage, constant voltage charging is switched to, and the charging current is allowed to gradually decrease with the increase of the battery saturation degree; When the charging current decreases to a second threshold value, continuous trickle charging is performed until the battery is fully charged.

4. The method of claim 3, wherein the method further comprises: In step S3, the step of performing continuous trickle charging includes: In the continuous trickle charging phase, an intermittent pulse charging method is used; In the intermittent period of each charging pulse, the open circuit voltage of the mobile phone battery is detected; When the open circuit voltage detected for a continuous preset number of times all reaches the full charge voltage value of the battery, it is determined that the battery has been fully charged, and the charging output is stopped.

5. The method of claim 1, wherein the method further comprises: In step S4, the step of dynamically fine-tuning the output power based on the charging state monitoring data includes: S41: If the battery voltage abnormally drops or the interface temperature exceeds a pre-warning threshold value, the output current is down-regulated by a preset step value within the range of the highest allowed charging parameter; S42: If the battery voltage is stable and the interface temperature is lower than the pre-warning threshold value, the output current is up-regulated by a preset step value to approach but not exceed the highest allowed charging parameter.

6. The method of claim 1, wherein the method further comprises: In step S6, the charging protection strategy includes: When any one of the voltage, current and temperature exceeds an absolute safety threshold value, the power output is immediately stopped; When continuous over-temperature or slight current abnormality is monitored, the output power is gradually reduced by a preset ladder; the continuous over-temperature refers to that the temperature is above the pre-warning threshold value for 10 seconds; the slight current abnormality refers to that the current fluctuation exceeds ±10% but does not reach a serious standard; After triggering protection, if the abnormal condition disappears, a new round of protocol interworking and charging process is automatically re-initiated after a preset safety interval.

7. The method of claim 6, wherein the method further comprises: In step S6, the step of gradually reducing the output power by a preset ladder includes: S61: The initial ladder amplitude of power reduction is determined according to the triggered abnormal type, and the initial ladder amplitude corresponding to the temperature abnormality is greater than the amplitude corresponding to the slight current abnormality; S62: At each power ladder level, a preset stable observation time is maintained; S63: In the stable observation time, if the abnormal condition still exists, the power is continuously reduced to the next power ladder; if the abnormal condition disappears, the current power ladder is recorded as the safe operation power and the charging is maintained; S64: If the power has been gradually reduced to a preset minimum safe output threshold value and the abnormal condition still has not been eliminated, it is determined as a quasi-serious fault, and the protection action of immediately stopping the power output is triggered.

Images