Charging method and system for charger of mobile terminal and storage medium

Abstract

The invention is suitable for the technical field of charging of mobile terminals, and provides a charging method and system for a charger of a mobile terminal and a storage medium, and the charger applied to the mobile terminal. In one charging period, the method comprises the steps that when it is detected that the charger is in a connection state with the mobile terminal, whether the battery type of the mobile terminal is a lithium ion battery or not is judged; when the battery voltage of the mobile terminal reaches a first preset voltage threshold value, switching to a constant current charging stage; when the battery voltage reaches a second preset voltage threshold value, switching to a constant-voltage charging stage; in the constant-voltage charging stage, when the output current of the charger IC reaches a first preset current threshold value, the charger IC is controlled to be switched to the charging stopping stage. According to the method, the charging process is accurately regulated and controlled in stages according to different threshold values, safe and efficient charging of the lithium ion battery of the mobile terminal is achieved, the charging effect is improved, the service life of the battery is prolonged, and practicability and usability are achieved.

Description

Technical Field

[0001] This application belongs to the technical field of mobile terminal charging, and particularly relates to a charging method, system, and storage medium for a charger of a mobile terminal. Background Art

[0002] With the wide popularity of mobile terminals, charging technology and battery management systems have become the key supports for ensuring the continuous operation of mobile devices, playing an increasingly important role in people's daily work and life scenarios. At present, significant progress has been made in the realization of basic functions of charging technology, which can basically meet the conventional charging needs of mobile terminals and is widely applied to the charging process of various mobile devices.

[0003] However, there are still many problems to be solved in the existing mobile terminal charging technology. On the one hand, traditional charging schemes generally adopt a single current threshold control strategy in the low-voltage battery activation stage, resulting in an increased failure rate of battery activation or excessive consumption of the lifespan of the charger IC. On the other hand, the existing charging management system has insufficient adaptability to multi-dimensional environmental variables, which not only accelerates the decline of battery capacity but also may cause safety hazards due to local overcharging / undercharging, ultimately restricting the battery life performance and user reliability of mobile terminals. Summary of the Invention

[0004] The embodiments of this application provide a charging method and system for a charger of a mobile terminal, which can solve the problems of difficult dynamic adjustment and insufficient adaptability in current charger charging.

[0005] In the first aspect, the embodiments of this application provide a charging method for a charger of a mobile terminal, including: S1: When it is detected that the mobile terminal is in a connected state, determine whether the battery type of the mobile terminal is a lithium-ion battery; if so, switch to the initial charging stage according to the current voltage state of the mobile terminal; S2: When the battery voltage of the mobile terminal reaches the first preset voltage threshold, switch to the constant current charging stage; in the constant current charging stage, control the charger IC to charge the battery of the mobile terminal with a first preset current until the battery voltage reaches the second preset voltage threshold; S3: When the battery voltage reaches the second preset voltage threshold, switch to the constant voltage charging stage; in the constant voltage charging stage, when the output current of the charger IC reaches the first preset current threshold, control the charger IC to switch to the charging stop stage.

[0006] In the second aspect, the embodiments of this application provide a charging system for a charger of a mobile terminal, including: a battery type detection module, a charging stage control module, a safety monitoring module, and a charger IC configuration module; A battery type detection module, which is used to detect the battery type used by the mobile terminal and determine whether the battery type is a lithium-ion battery; A charging stage control module, which is used to control the charger IC to switch to a preset charging stage according to the result of the battery type detection module and the battery voltage of the mobile terminal. Among them, the preset charging stage includes one of an initial charging stage, a constant current charging stage, and a constant voltage charging stage; A safety monitoring module, which is used to obtain the temperature of the battery, the output current of the charger IC, and the battery voltage in real time; and is also used to send a pause control signal to the charging stage control module when any one of the temperature of the battery, the output current of the charger IC, and the battery voltage exceeds the corresponding preset threshold, so that: the working state of the charger IC switches to a stop state; A charger IC configuration module, which is used to configure preset voltage thresholds and preset current thresholds corresponding to different preset charging stages according to the characteristics of the battery.

[0007] In a third aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a controller, the foregoing method is implemented.

[0008] The beneficial effects of the embodiments of the present application compared with the prior art are as follows: After detecting the connection of the mobile terminal, when the battery type is determined to be a lithium-ion battery, the present application switches to the initial charging stage according to the current voltage state, switches to the constant current charging stage and controls the charger IC to charge at the first preset current when the battery voltage reaches the first preset voltage threshold, switches to the constant voltage charging stage when the battery voltage reaches the second preset voltage threshold, and controls it to switch to the stop charging stage when the output current of the charger IC reaches the first preset current threshold, so as to provide an orderly, safe and efficient charging process for the lithium-ion battery of the mobile terminal, ensure that the battery obtains appropriate charging current and voltage at different stages, improve the charging effect, and extend the battery service life. The present invention realizes safe and efficient charging for the lithium-ion battery of the mobile terminal by accurately regulating the charging process in stages and according to different thresholds, improves the charging effect and extends the battery service life, and has practicability and ease of use. Description of the Drawings

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0010] Figure 1 It is the first flow chart of a charger charging method for a mobile terminal of the present application; Figure 2 It is the second process schematic diagram of the charging method of a charger for a mobile terminal according to this application; Figure 3 It is the third process schematic diagram of the charging method of a charger for a mobile terminal according to this application; Figure 4 It is the structural schematic diagram of a charger charging system for a mobile terminal according to this application. Detailed implementation manners

[0011] In the following description, for the purpose of illustration rather than limitation, specific details such as specific system architectures and technologies are presented in order to thoroughly understand the embodiments of this application. However, those skilled in the art should clearly understand that this application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details from interfering with the description of this application.

[0012] A single charging cycle is the entire time period in the time series analysis of the charging process, from the establishment of the connection between the mobile terminal and the charger until the completion of a full charging process (from the initial detection to the final stop of charging).

[0013] Figures 1 to 3 It shows the first process schematic diagram, the second process schematic diagram, and the third process schematic diagram of the charging method of a charger for a mobile terminal provided by the first embodiment of this application. The charging method of the charger for the mobile terminal is applied to the charger of the mobile terminal. During a single charging cycle, the method includes: S1: When it is detected that the mobile terminal is in a connected state, determine whether the battery type of the mobile terminal is a lithium-ion battery; if so, switch to the initial charging stage according to the current voltage state of the mobile terminal.

[0014] Specifically, for the battery type of the mobile terminal, especially the lithium-ion battery, accurately enter the appropriate initial charging stage according to its voltage state, which ensures that the charging process starts from the most suitable stage, avoids damage to the battery caused by inappropriate charging methods, and lays a foundation for the subsequent efficient and safe charging process.

[0015] S2: When the battery voltage of the mobile terminal reaches the first preset voltage threshold, switch to the constant current charging stage; during the constant current charging stage, control the charger IC to charge the battery of the mobile terminal with a first preset current until the battery voltage reaches the second preset voltage threshold.

[0016] Exemplarily, the first preset voltage threshold is 3V, the first preset current is a current ranging from 0.5C to 3C, and the second preset voltage threshold is 4.1V - 4.5V. Specifically, when the battery voltage reaches 3V, it enters the constant current charging stage, and the charger IC charges the battery with a current ranging from 0.5C to 3C until the battery voltage reaches the constant voltage charging threshold of the lithium battery.

[0017] Specifically, when the battery voltage reaches around 3V, it enters the constant current charging stage and rapidly charges the battery with a current ranging from 0.5C to 3C until it reaches the constant voltage charging threshold (4.1V - 4.5V) of the lithium battery. The constant current charging stage can rapidly replenish the battery's power within the current range that the battery can withstand, improve the charging efficiency, and meet the user's demand for shortening the charging time. The second preset voltage threshold is 4.1V - 4.5V.

[0018] S3: When the battery voltage reaches the second preset voltage threshold, switch to the constant voltage charging stage; in the constant voltage charging stage, when the output current of the charger IC reaches the first preset current threshold, control the charger IC to switch to the stop charging stage.

[0019] Exemplarily, the second preset voltage threshold is the constant voltage charging threshold (4.1V - 4.5V), and the first preset current threshold is C / 10. After the battery voltage reaches the constant voltage charging threshold, it enters the constant voltage charging stage, and the charger IC monitors the battery voltage to ensure that it does not exceed the maximum floating voltage; when the current flowing into the battery drops below C / 10, the charger IC terminates the charging cycle and completes the charging.

[0020] Specifically, after the battery voltage reaches the constant voltage threshold, it enters the constant voltage charging stage. The charger IC monitors the battery voltage to ensure that it does not exceed the maximum floating voltage, and terminates the charging cycle when the current flowing into the battery drops below C / 10. The constant voltage charging stage can prevent the battery from overcharging, avoid safety problems such as battery heating, swelling, and even explosion caused by overcharging, and at the same time ensure that the battery can be charged to an appropriate level, maintaining the battery's optimal performance and service life.

[0021] The charging method of the charger for the mobile terminal of the present invention switches to the initial charging stage according to the current voltage state when it is detected that the mobile terminal is connected and the battery type is determined to be a lithium-ion battery. When the battery voltage reaches the first preset voltage threshold, it switches to the constant current charging stage and controls the charger IC to charge with the first preset current. When the battery voltage reaches the second preset voltage threshold, it switches to the constant voltage charging stage. And when the output current of the charger IC reaches the first preset current threshold, it controls the charger IC to switch to the stop charging stage, so as to provide an orderly, safe and efficient charging process for the lithium-ion battery of the mobile terminal, ensure that the battery obtains appropriate charging current and voltage at different stages, improve the charging effect, and extend the service life of the battery. The present invention realizes safe and efficient charging for the lithium-ion battery of the mobile terminal by accurately regulating the charging process in stages and according to different thresholds, improves the charging effect and extends the service life of the battery, and has practicability and ease of use.

[0022] In one embodiment, a battery pack and a capacitor are provided inside the battery of the mobile terminal. The battery pack includes; in the initial charging stage, the method includes: S1-1: When the battery voltage of the mobile terminal is lower than 2.1V, switch to the trickle charging stage; in the trickle charging stage, control the charger IC to output a current of 50 mA to charge the capacitor.

[0023] Exemplarily, when the voltage of the lithium-ion battery is lower than 2.1V, it enters the trickle charging stage, and the charger IC provides a current of 50 mA to charge the capacitor of the battery pack, so as to trigger the protection IC to close the FET to reconnect the battery and start. If it is not reconnected within a certain time, the charging stops.

[0024] Specifically, when the voltage of the lithium-ion battery is lower than 2.1V, a small current of 50 mA is used to charge the capacitor of the battery pack to trigger the protection IC to close the FET to reconnect the battery. This trickle charging mechanism can activate the battery in a gentle manner when the battery voltage is extremely low, avoid the impact of large current on the battery, and prevent permanent damage to the battery caused by deep discharge or overcurrent events. At the same time, setting a timer to stop charging if it is not reconnected within a certain time can timely identify battery faults, avoid ineffective charging and potential safety hazards.

[0025] S1-2: If the battery pack is in a discharging state and the battery voltage is higher than 2.1V, then switch to the pre-charging stage.

[0026] Exemplarily, if the battery pack is in a discharging state and the voltage is higher than 2.1V, it enters the pre-charging stage. Exemplarily, if the battery pack has been reconnected or is in a discharging state and the voltage is higher than 2.1V, it enters the pre-charging stage.

[0027] Specifically, when the battery pack is reconnected or in a discharging state and the voltage is higher than 2.1V, it enters the pre-charging stage. It charges with a current of C / 10 to slowly increase the battery voltage. This low-current pre-charging method helps to safely increase the battery voltage when the battery voltage is relatively low but not low enough to require trickle charging, avoiding potential damage to the battery caused by directly using a larger current for charging, protecting the internal structure and chemical properties of the battery, and extending the battery life.

[0028] In one embodiment, during the pre-charging stage, the charger IC charges the battery with a second preset current; wherein, the second preset current is a current of C / 10. Specifically, in step S1-2, the charger IC charges the battery with a current of C / 10 to slowly increase the battery voltage.

[0029] In one embodiment, the second preset voltage threshold is 4.1V - 4.5V. Specifically, in step S2, the constant voltage threshold of the lithium battery is 4.1V - 4.5V.

[0030] In one embodiment, the method further includes: obtaining the temperature of the battery, the output current of the charger IC, and the battery voltage in real time; When the temperature of the battery exceeds the thermal threshold or the temperature of the battery is lower than the cold threshold, control the working state of the charger IC to switch to the stop state according to the JEITA standard; When the output current of the charger IC exceeds the third preset current threshold, control the working state of the charger IC to switch to the stop state; When the battery voltage exceeds the third preset voltage threshold, control the working state of the charger IC to switch to the stop state.

[0031] Exemplarily, the third preset voltage threshold is 5.5V, and the third preset current threshold is 2A.

[0032] Exemplarily, during the charging process, the battery temperature, charging current, and voltage are monitored in real time; When the battery temperature exceeds the thermal threshold or is lower than the cold threshold, adjust the charging current or voltage according to the JEITA standard, or completely disable the charging; When abnormalities occur in the charging current and voltage, such as overcurrent, overvoltage, undervoltage, etc., timely adjust the working state of the charger IC to ensure charging safety.

[0033] Exemplarily, the thermal threshold is 45°C to 50°C, and the cold threshold is 0°C to 5°C.

[0034] Specifically, the battery temperature, charging current, and voltage are monitored in real time. When the battery temperature is abnormal, the charging current or voltage is adjusted according to the JEITA standard, or charging is even disabled. When abnormal conditions such as overcurrent, overvoltage, or undervoltage occur in the charging current and voltage, the working state of the charger IC is adjusted in a timely manner, which greatly improves the safety of the charging process. The JEITA standard ensures that the battery is charged within an appropriate temperature range, avoiding damage to the battery caused by too high or too low temperature; the timely handling of abnormal current and voltage can prevent the battery from being damaged due to abnormal electrical parameters, ensuring the safety of the mobile terminal and the user.

[0035] In one embodiment, the method further includes: configuring a preset battery voltage threshold and a preset current threshold corresponding to a preset charging stage according to the battery type of the mobile terminal; wherein, the preset charging stage is the initial charging stage, the constant current charging stage, the constant voltage charging stage, or the stop charging stage.

[0036] Exemplarily, the charger IC has a configurable function and can set personalized thresholds for each charging stage according to the actual characteristics and usage scenarios of the battery to optimize the charging effect.

[0037] Specifically, the charger IC can set personalized thresholds for each charging stage according to the actual characteristics and usage scenarios of the battery. Different batteries have different charging requirements under different usage scenarios (such as different ambient temperatures, different usage frequencies, etc.). The configurable function enables the charging system to better adapt to these changes, optimize the charging effect, and improve the charging efficiency and service life of the battery.

[0038] Exemplarily, during the charging process, when it is detected that factors such as input current limit, input voltage limit, heat dissipation regulation, or battery temperature cause the actual charging current to be lower than the set value, the charger IC automatically adjusts the charging strategy to ensure the stability and safety of the charging process.

[0039] Specifically, during the charging process, when it is detected that factors such as input current limit, input voltage limit, heat dissipation regulation, or battery temperature cause the actual charging current to be lower than the set value, the charger IC automatically adjusts the charging strategy, which ensures the stability and safety of the charging process under various complex conditions. Even in the face of external condition changes or device self - limitations, it can continuously provide a suitable charging method for the battery, avoiding charging interruption or battery damage caused by abnormal current, and improving the user experience.

[0040] In one embodiment, a system microcontroller and a monitor timer are provided in the charger of the mobile terminal; the method further includes: Monitoring the state of the system microcontroller through the monitor timer; If the system microcontroller is in the first operating state, a first preset process is performed according to the configuration information of the monitor timer.

[0041] Exemplarily, the monitor timer is used to monitor the state of the system microcontroller. If the system microcontroller freezes or stops responding, corresponding processing is performed according to the configuration of the monitor timer, such as sending an interrupt, resetting the charger IC register, cutting off the power, etc.

[0042] Specifically, the monitor timer is used to monitor the state of the system microcontroller. If the system microcontroller freezes or stops responding, corresponding processing (such as sending an interrupt, resetting the charger IC register, cutting off the power, etc.) is performed according to its configuration. This adds an important layer of security to the charging system, preventing the charger IC from operating abnormally due to system microcontroller failures, thereby avoiding damage to the battery and the mobile terminal and ensuring the reliability and safety of the charging process.

[0043] Figure 4 It is a schematic structural diagram of a charger charging system for a mobile terminal according to the present application. The charger charging system for the mobile terminal is applied to the charger of the mobile terminal and includes: a battery type detection module 41, a charging stage control module 42, a safety monitoring module 43, and a charger IC configuration module 44.

[0044] Among them, the battery type detection module 41 is used to detect the battery type used by the mobile terminal and determine whether the battery type is a lithium-ion battery. Specifically, the battery type detection module 41 can quickly and accurately identify the battery type used by the mobile terminal, providing a key basis for the correct selection and control of the subsequent charging stage, ensuring that the charging system is adapted to different types of batteries, especially for the characteristics of lithium-ion batteries for specialized charging management.

[0045] The charging stage control module 42 is used to control the charger IC to switch to a preset charging stage according to the result of the battery type detection module and the battery voltage of the mobile terminal, where the preset charging stage includes one of an initial charging stage, a constant current charging stage, and a constant voltage charging stage. Specifically, the charger IC is accurately controlled to enter the corresponding preset charging stage according to the battery type and the battery voltage of the mobile terminal, and is controlled according to the set thresholds and parameters to ensure the orderliness and scientific nature of the charging process and achieve efficient and safe charging.

[0046] The safety monitoring module 43 is used to obtain the temperature of the battery, the output current of the charger IC, and the battery voltage in real time; it is also used to send a pause control signal to the charging stage control module when any one of the temperature of the battery, the output current of the charger IC, and the battery voltage exceeds the corresponding preset threshold, so that: the working state of the charger IC is switched to the stop state. Specifically, it monitors the key parameters of the battery in real time, and sends a signal to the charging stage control module in a timely manner when an abnormal situation occurs to adjust the working state of the charger IC, comprehensively ensuring the safety of the charging process and avoiding damage to the battery due to abnormal temperature, current, and voltage.

[0047] The charger IC configuration module 44 is used to configure preset voltage thresholds and preset current thresholds corresponding to different preset charging stages according to the characteristics of the battery. Specifically, it sets personalized thresholds for each charging stage based on the battery characteristics and usage scenarios to optimize the charging effect, enabling the charging system to adapt to different batteries and diverse usage scenarios, and improving the performance and lifespan of the battery.

[0048] In one embodiment, the safety monitoring module 43 includes a temperature monitoring unit 431, a current monitoring unit 432, and a voltage monitoring unit 433. Among them, the temperature monitoring unit 431 is used to monitor the temperature of the battery, compare the temperature with the thermal threshold and cold threshold of the JEITA standard, and control the output current of the charger IC. The current monitoring unit 432 is used to monitor the output current of the charger IC. The voltage monitoring unit 433 is used to monitor the output voltage of the charger IC and the battery voltage. Specifically, the temperature monitoring unit, current monitoring unit, and voltage monitoring unit in the safety monitoring module can comprehensively and real-time monitor the key parameters of the battery. Once an abnormal situation occurs, a signal is immediately sent to the charging stage control module to adjust the working state of the charger IC, ensuring that the charging process is always in a safe and controllable state, and preventing safety accidents caused by problems such as overheating, overcharging, and overcurrent of the battery, thus guaranteeing the safety of the mobile terminal and the user.

[0049] It should be understood that the magnitudes of the sequence numbers of the steps in the above embodiments do not imply the order of execution. The order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

[0050] It should be noted that the information interaction, execution process, etc. between the above-mentioned devices / units, due to being based on the same concept as the method embodiments of the present application, for their specific functions and the technical effects brought, reference can be specifically made to the method embodiment part, and details are not described herein again.

[0051] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be allocated to different functional units and modules according to needs, that is, the internal structure of the device is divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment can be integrated into a processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of a software functional unit. In addition, the specific names of the functional units and modules are only for the convenience of mutual distinction and do not limit the protection scope of this application. The specific working processes of the units and modules in the above-mentioned system can refer to the corresponding processes in the foregoing method embodiments and will not be elaborated here.

[0052] An embodiment of this application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in the foregoing embodiments of various intelligent assisted driving control methods based on electroencephalogram signals can be implemented.

[0053] An embodiment of this application provides a computer program product. When the computer program product runs on an electronic device, the electronic device can execute the steps in the foregoing method embodiments.

[0054] If the above-mentioned integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, to implement all or part of the processes in the above-mentioned method embodiments of this application, a computer program can be used to instruct relevant hardware to complete. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by a processor, the steps in the foregoing method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in the form of source code, object code, executable file or some intermediate form, etc. The computer-readable medium can at least include: any entity or device that can carry the computer program code to an electronic device, a recording medium, a computer memory, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), an electrical carrier signal, a telecommunication signal, and a software distribution medium. For example, a USB flash drive, a mobile hard disk, a magnetic disk or an optical disc, etc. In some jurisdictions, according to legislation and patent practice, the computer-readable medium cannot be an electrical carrier signal and a telecommunication signal.

[0055] In the above embodiments, the descriptions of the respective embodiments each have their own emphasis. For parts not described in detail or recorded in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0056] Those of ordinary skill in the art will realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. A professional technician can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of this application.

[0057] In the embodiments provided in this application, it should be understood that the disclosed device / network device and method can be implemented in other ways. For example, the device / network device embodiments described above are merely illustrative. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces. The indirect couplings or communication connections of the device or unit can be in electrical, mechanical or other forms.

[0058] The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0059] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit the same; although this application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements 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 this application, and should all be included within the protection scope of this application.

Claims

1. A charging method for a charger of a mobile terminal, which is applied to the charger of the mobile terminal, characterized in that, During one charging cycle, the method includes: S1: When it is detected that the mobile terminal is in a connected state, determine whether the battery type of the mobile terminal is a lithium-ion battery; if so, switch to the initial charging stage according to the current voltage state of the mobile terminal; S2: When the battery voltage of the mobile terminal reaches the first preset voltage threshold, switch to the constant current charging stage; in the constant current charging stage, control the charger IC to charge the battery of the mobile terminal with a first preset current until the battery voltage reaches the second preset voltage threshold; S3: When the battery voltage reaches the second preset voltage threshold, switch to the constant voltage charging stage; in the constant voltage charging stage, when the output current of the charger IC reaches the first preset current threshold, control the charger IC to switch to the stop charging stage.

2. The charging method of a charger for a mobile terminal according to claim 1, wherein, A battery pack and a capacitor are provided inside the battery of the mobile terminal, and the battery pack includes; in the initial charging stage, the method includes: S1-1: When the battery voltage of the mobile terminal is lower than 2.1V, switch to the trickle charging stage; in the trickle charging stage, control the charger IC to output a current of 50mA to charge the capacitor; S1-2: If the battery pack is in a discharging state and the battery voltage is higher than 2.1V, then switch to the pre-charging stage.

3. The charging method of a charger for a mobile terminal according to claim 2, characterized in that, In the pre-charging stage, the charger IC charges the battery with a second preset current; wherein, the second preset current is a current of C / 10.

4. The charging method of a charger for a mobile terminal according to claim 1, wherein The second preset voltage threshold is 4.1V - 4.5V.

5. The charging method of a charger for a mobile terminal according to claim 1, characterized in that The method further includes: obtaining in real time the temperature of the battery, the output current of the charger IC, and the battery voltage; When the temperature of the battery exceeds the thermal threshold or the temperature of the battery is lower than the cold threshold, control the working state of the charger IC to switch to the stop state according to the JEITA standard; When the output current of the charger IC exceeds the third preset current threshold, control the working state of the charger IC to switch to the stop state; When the battery voltage exceeds the third preset voltage threshold, control the working state of the charger IC to switch to the stop state.

6. The charging method of a charger for a mobile terminal according to claim 1, wherein, The method further includes: Configuring a preset battery voltage threshold and a preset current threshold corresponding to a preset charging stage according to the battery type of the mobile terminal; wherein, the preset charging stage is the initial charging stage, the constant current charging stage, the constant voltage charging stage, or the stop charging stage.

7. The charging method of a charger for a mobile terminal according to claim 1, characterized in that, A system microcontroller and a monitor timer are provided inside the charger of the mobile terminal; the method further includes: Monitoring the state of the system microcontroller through the monitor timer; If the system microcontroller is in the first operating state, perform a first preset process according to the configuration information of the monitor timer.

8. A charger charging system for a mobile terminal, applied to a charger of the mobile terminal, characterized in that Including: A battery type detection module, a charging stage control module, a safety monitoring module, and a charger IC configuration module; The battery type detection module is used to detect the battery type used by the mobile terminal and determine whether the battery type is a lithium-ion battery; The charging stage control module is configured to control the charger IC to switch to a preset charging stage according to the result of the battery type detection module and the battery voltage of the mobile terminal, where the preset charging stage includes one of an initial charging stage, a constant current charging stage, and a constant voltage charging stage; The safety monitoring module is configured to obtain the temperature of the battery, the output current of the charger IC, and the battery voltage in real time; and is further configured to send a pause control signal to the charging stage control module when any one of the temperature of the battery, the output current of the charger IC, and the battery voltage exceeds a corresponding preset threshold, so that: the working state of the charger IC is switched to a stop state; The charger IC configuration module is configured to configure preset voltage thresholds and preset current thresholds corresponding to different preset charging stages according to the characteristics of the battery.

9. The charging system of the charger of the mobile terminal according to claim 8, characterized in that, The safety monitoring module includes a temperature monitoring unit, a current monitoring unit, and a voltage monitoring unit; The temperature monitoring unit is configured to monitor the temperature of the battery, compare the temperature with the thermal threshold and the cold threshold of the JEITA standard, and control the output current of the charger IC; The current monitoring unit is configured to monitor the output current of the charger IC; The voltage monitoring unit is configured to monitor the output voltage of the charger IC and the battery voltage.

10. A computer-readable storage medium storing a computer program, characterized in that, The computer program, when executed by a controller, implements the method according to any one of claims 1 to 7.

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