CN113285499B - Charging control method, electronic device, control device and storage medium - Google Patents

Abstract

The present disclosure relates to a charge and discharge control method, an electronic device, a control apparatus, and a storage medium, the method being applied to an electronic device including an electric energy storage unit, the method including: monitoring a real-time charging capacity of the electrical energy storage unit during charging; when the real-time charging capacity is larger than or equal to the set capacity, monitoring the charging capacity increment of the electric energy storage unit in a preset time length; and stopping charging when the charging capacity increment in the preset duration is smaller than or equal to the preset capacity increment.

Description

Charging control method, electronic device, control device and storage medium

Technical Field

The present disclosure relates to the field of charging technology, and in particular to a charging control method, electronic equipment, a control device and a storage medium.

Background technique

As the main power source of electronic devices, energy storage units (e.g., batteries) have become one of the indispensable components of electronic devices. With the rapid development of electronic device technology, users have higher and higher requirements for energy storage units in electronic devices. On the one hand, users hope that energy storage units can be charged quickly to shorten the charging time. On the other hand, users hope that the capacity of energy storage units can be increased to extend the standby time.

Therefore, how to shorten the charging time while ensuring that the energy storage unit has a large capacity has become a problem that needs to be solved urgently.

Summary of the invention

In view of this, the present disclosure provides a charging control method, an electronic device, a control device and a storage medium.

According to a first aspect of an embodiment of the present disclosure, there is provided a charging control method, which is applied to an electronic device including an electric energy storage unit, the method comprising:

During the charging process, monitoring the real-time charging capacity of the electric energy storage unit;

When the real-time charging capacity is greater than or equal to the set capacity, monitoring the charging capacity increment of the electric energy storage unit within a preset time period;

When the charging capacity increment within the preset time period is less than or equal to the preset capacity increment, charging is stopped.

In some embodiments, the method further comprises:

The set capacity and the preset capacity increment are adjusted according to the number of cycles of the electric energy storage unit.

In some embodiments, the set capacity comprises the product of the rated capacity of the electric energy storage unit and a first percentage;

The preset capacity increment comprises the product of the cut-off capacity increment of the electric energy storage unit and a second percentage;

The adjusting the set capacity and the preset capacity increment according to the number of cycles of the electric energy storage unit includes:

When the number of cycles of the electric energy storage unit increases, lowering the values of the first percentage and the second percentage;

The rated capacity, the cut-off capacity increment, the corresponding relationship between the number of cycles and the first percentage, and the corresponding relationship between the number of cycles and the second percentage are determined based on charge and discharge test training of a sample energy storage unit at a preset temperature.

In some embodiments, adjusting the set capacity and the preset capacity increment according to the number of cycles of the electric energy storage unit includes:

When the number of cycles of the electric energy storage unit increases, the set capacity and the preset capacity increment are adjusted down.

In some embodiments, adjusting the set capacity and the preset capacity increment according to the number of cycles of the electric energy storage unit further includes:

According to the result of the charge and discharge test training of the sample energy storage unit at the preset temperature, the corresponding relationship between the cycle number of the energy storage unit and the set capacity, and the corresponding relationship between the cycle number of the energy storage unit and the preset capacity increment are determined.

In some embodiments, the method further comprises:

Monitoring the real-time charging current of the electric energy storage unit;

When the real-time charging current is less than or equal to the preset cut-off current, charging is stopped.

In some embodiments, the preset cut-off current is determined according to the preset capacity increment.

According to a second aspect of an embodiment of the present disclosure, there is provided an electronic device, including:

An electric energy storage unit, used for storing electric energy provided by the power supply equipment;

A monitoring unit is electrically connected to the electric energy storage unit; the monitoring unit is used to monitor the real-time charging capacity of the electric energy storage unit during the charging process;

a control unit, electrically connected to the electric energy storage unit and to the monitoring unit;

The control unit is configured to monitor the charge capacity increment of the electric energy storage unit within a preset time period when the real-time charge capacity is greater than or equal to the set capacity;

The control unit is further configured to stop charging when the charging capacity increment within the preset time period is less than or equal to a preset capacity increment.

In some embodiments, the control unit is further used to adjust the values of the set capacity and the preset capacity increment according to the number of cycles of the electric energy storage unit.

In some embodiments, the set capacity comprises the product of the rated capacity of the electric energy storage unit and a first percentage;

The preset capacity increment comprises the product of the cut-off capacity increment of the electric energy storage unit and a second percentage;

The control unit is specifically configured to reduce the values of the first percentage and the second percentage when the number of cycles of the electric energy storage unit increases;

The rated capacity, the cut-off capacity increment, the corresponding relationship between the number of cycles and the first percentage, and the corresponding relationship between the number of cycles and the second percentage are determined based on charge and discharge test training of a sample energy storage unit at a preset temperature.

In some embodiments, the control unit is specifically configured to lower the set capacity and the preset capacity increment when the number of cycles of the electric energy storage unit increases.

In some embodiments, the control unit is also used to determine the correspondence between the number of cycles of the energy storage unit and the set capacity, and the correspondence between the number of cycles of the energy storage unit and the preset capacity increment based on the results of charge and discharge test training of a sample energy storage unit at a preset temperature.

In some embodiments, the control unit is further used to monitor the real-time charging current of the electric energy storage unit;

The control unit is further configured to stop charging when the real-time charging current is less than or equal to a preset cut-off current.

In some embodiments, the preset cut-off current is determined according to the preset capacity increment.

According to a third aspect of an embodiment of the present disclosure, there is provided a charging control device, including:

processor;

a memory for storing processor-executable instructions;

Wherein, the processor is configured to: when executing the executable instructions, implement the steps in the method described in any one of the first aspects of the embodiments of the present disclosure.

According to the fourth aspect of an embodiment of the present disclosure, a non-temporary computer-readable storage medium is provided. When the instructions in the storage medium are executed by a processor of a mobile terminal, the mobile terminal is enabled to execute the steps in the method as described in any one of the first aspect of the embodiment of the present disclosure.

The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

In the related art, when the charging current decreases to a fixed charging cut-off current, charging stops. However, during the charging process, the internal resistance of the energy storage unit will gradually increase, causing the charging current to further decrease, so that when the charging current decreases to the charging cut-off current and charging stops, the amount of electricity stored in the energy storage unit is not saturated, shortening the use time of the electronic device powered by the energy storage unit after charging is completed, affecting the user experience.

Compared to using whether the charging current decreases to a fixed charging cut-off current as the basis for judging whether to stop charging, the embodiment of the present disclosure uses whether the charging capacity increment within a preset time period is less than or equal to a preset capacity increment as the basis for judging whether to stop charging when the charging capacity is greater than or equal to the set capacity. This fully considers the influence of the change in the internal resistance of the energy storage unit on the charging current during the charging process, reduces the influence of the change in the internal resistance of the energy storage unit on determining whether to stop charging, and is beneficial to ensuring that the actual charging capacity of the energy storage unit meets user needs when each charging is completed while ensuring a short charging time.

It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

Fig. 1 is a flow chart showing a charging control method according to an exemplary embodiment.

Fig. 2 is a block diagram of an electronic device according to an exemplary embodiment.

Fig. 3 is a block diagram showing a charging control device according to an exemplary embodiment.

Detailed ways

Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

FIG. 1 is a flow chart of a charging control method according to an exemplary embodiment. As shown in FIG. 1 , the method is applied to an electronic device including an electric energy storage unit. The method includes the following steps:

S100: During the charging process, monitoring the real-time charging capacity of the electric energy storage unit;

S110: When the real-time charging capacity is greater than or equal to the set capacity, monitoring the charging capacity increment of the electric energy storage unit within a preset time period;

S120: When the charging capacity increment within the preset time period is less than or equal to the preset capacity increment, stop charging.

The real-time charging capacity can be used to indicate the total amount of electricity currently stored in the electric energy storage unit. For example, in step S100, the real-time charging capacity of the electric energy storage unit can be monitored in real time by a power meter.

The set capacity may be determined according to the rated capacity of the electric energy storage unit. For example, the set capacity may be less than or equal to the rated capacity of the electric energy storage unit. Here, the rated capacity of the electric energy storage unit may be set according to user input. For a specific electric energy storage unit, its rated capacity is determined.

Exemplarily, the set capacity and the preset capacity increment are obtained by performing charge and discharge test training on a sample energy storage unit at a preset temperature.

It should be noted that when the real-time charging capacity of the energy storage unit is greater than or equal to the set capacity, it can be considered that the amount of electricity stored in the energy storage unit at this time can meet the design requirements of the energy storage unit. That is, the set capacity can be regarded as the minimum capacity that needs to be charged when the energy storage unit is charged.

When the charging capacity of the energy storage unit is greater than or equal to the set capacity, the energy storage unit can continue to be charged by trickle charging. It is understandable that by continuing to use trickle charging, the energy storage unit can truly reach a saturated state when charging is stopped, so as to extend the time that the energy storage unit can be used after a charge is completed. However, the charging current of the trickle charging method is small, and when the trickle charging method is used until it is fully charged, the required charging time is long.

During the charging process, the internal resistance of the energy storage unit increases as the charging time increases. During the trickle charging stage, the increase in the internal resistance of the energy storage unit will cause the charging current to further decrease, which in turn will extend the charging time and affect the user experience.

In the related art, the charging time can be shortened by increasing the charging cut-off current. Specifically, when the current in the trickle charging stage decreases to equal the charging cut-off current, the charging is stopped immediately. However, as the internal resistance of the energy storage unit gradually increases, the charging current in the trickle charging stage is further reduced, so that when the charging current decreases to the charging cut-off current and charging is stopped, the amount of electricity stored in the energy storage unit is not saturated, which shortens the use time of the electronic device powered by the energy storage unit after charging is completed, affecting the user experience.

Therefore, compared to using whether the charging current is reduced to a fixed charging cut-off current as the basis for judging whether to stop charging, the embodiment of the present disclosure uses the charging capacity increment within a preset time as the condition for judging whether to stop charging after the real-time charging capacity is greater than or equal to the set capacity. The charging capacity increment within the preset time is used to reflect the change in charging speed, which reduces the influence of the change in the internal resistance of the energy storage unit on the determination of whether to stop charging. While ensuring a short charging time, it is beneficial to ensure that the actual charging capacity of the energy storage unit meets user needs when each charging is completed.

In some embodiments, the method further comprises:

The set capacity and the preset capacity increment are adjusted according to the number of cycles of the electric energy storage unit.

In the cycle life of an energy storage unit, one charge and one discharge is called a complete cycle. Here, the cycle life refers to the total number of cycles that the energy storage unit can withstand before the available capacity of the energy storage unit drops to a certain specified value under a certain charging and discharging mode.

As the number of cycles of the energy storage unit increases, the energy storage unit may age, resulting in a decrease in the available power of the energy storage unit, making the user noticeably feel that the available time of the electronic device powered by the energy storage unit is reduced after a charge is completed.

Specifically, taking the energy storage unit as a lithium-ion battery as an example, as the number of cycles of the lithium-ion battery increases, the internal resistance of the lithium-ion battery increases, resulting in a decrease in the amount of electricity that the energy storage unit can actually store, and causing the actual amount of electricity discharged after the energy storage unit is charged to decrease, thereby shortening the battery life.

When the set capacity value is fixed, as the number of lithium-ion battery cycles increases, the time it takes for the lithium-ion battery to reach the fixed set capacity will increase during the charging process, resulting in a longer charging time. Alternatively, the real-time charging capacity of the lithium-ion battery may not reach the fixed set capacity, resulting in an inability to determine the need to stop charging, so the lithium-ion battery will continue to be charged, resulting in overcharging of the lithium-ion battery, causing damage to the lithium-ion battery, and even safety accidents.

When the value of the preset capacity increment is fixed, as the number of cycles increases, after the real-time charging capacity of the lithium-ion battery is greater than or equal to the set capacity, the charging capacity increment within the preset time will gradually decrease during the process of continuing to charge the lithium-ion battery. In addition, the increase in the internal resistance of the lithium-ion battery will further cause the charging capacity increment within the preset time to decrease.

Therefore, when charging is stopped when the charging capacity increment within the preset time is reduced to a fixed preset capacity increment, not only may the actual charging capacity of the lithium-ion battery be small and unable to meet the needs of users, making the user clearly feel the shortening of the lithium-ion battery life, but it may also cause obvious differences in the actual capacity after each charging is stopped, reducing the power stability of the lithium-ion battery during its use cycle.

In summary, setting fixed values for the set capacity and the preset capacity increment throughout the entire service life of the energy storage unit may result in prolonged charging time, or damage to the energy storage unit, or there may be large differences in the available power in the energy storage unit after each charging, resulting in poor power stability.

Compared with setting fixed values for the set capacity and the preset capacity increment, the embodiment of the present disclosure can timely adjust the values of the set capacity and the preset capacity increment according to the number of cycles of the electric energy storage unit, thereby realizing automatic dynamic adjustment of the charging stop condition. While ensuring that the capacity actually charged into the electric energy storage unit when charging is stopped is within a reasonable range and that the power stability is ensured each time charging is stopped during the cycle life of the electric energy storage unit, the charging time is also ensured to be within a reasonable range, which is beneficial to ensuring user experience.

In some embodiments, before adjusting the set capacity and the value of the preset capacity increment according to the number of cycles of the electric energy storage unit, the method further includes:

According to the result of the charge and discharge test training of the sample energy storage unit at the preset temperature, the corresponding relationship between the cycle number of the energy storage unit and the set capacity, and the corresponding relationship between the cycle number of the energy storage unit and the preset capacity increment are determined.

Exemplarily, taking the case where the energy storage unit is a battery and the sample energy storage unit is a sample battery, the process of performing charge and discharge test training on the sample energy storage unit at a preset temperature may include: charging the sample battery at a preset temperature (for example, 23 degrees Celsius to 27 degrees Celsius), determining a set capacity corresponding to the number of cycles at different numbers of cycles, and determining a preset capacity increment corresponding to the number of cycles at different numbers of cycles.

For the corresponding set capacities determined at different numbers of cycles, function fitting can be performed to determine the corresponding relationship between the number of cycles and the value of the set capacity. Similarly, for the corresponding preset capacity increments determined at different numbers of cycles, function fitting can be performed to determine the corresponding relationship between the number of cycles and the value of the preset capacity increment.

Exemplarily, the above-mentioned charge and discharge test training can be performed on multiple sample batteries to increase the accuracy of the correspondence between the determined number of cycles of the energy storage unit and the set capacity, and to increase the accuracy of the correspondence between the determined number of cycles of the energy storage unit and the preset capacity increment.

In some embodiments, adjusting the set capacity and the preset capacity increment according to the number of cycles of the electric energy storage unit includes:

When the number of cycles of the electric energy storage unit increases, the set capacity and the preset capacity increment are adjusted down.

Exemplarily, when the number of cycles increases from a first threshold value to a second threshold value, the value of the set capacity decreases from the first set capacity to the second set capacity;

When the number of cycles increases from the first threshold to the second threshold, the value of the preset capacity increment decreases from the first preset capacity increment to the second preset capacity increment;

The first threshold, the second threshold, the first set capacity, the second set capacity, the first preset capacity increment and the second preset capacity increment are all obtained by performing charge and discharge test training on a sample energy storage unit at a preset temperature.

When the number of cycles is greater than or equal to the first threshold value, and the number of cycles is less than the second threshold value, the value of the set capacity is the first preset capacity, and the value of the preset capacity increment is the first preset capacity increment. It should be noted that when the number of cycles is within the range from the first threshold value to the second threshold value, and the value of the number of cycles is not equal to the second threshold value, the value of the set capacity can be the fixed first preset capacity, and the value of the preset capacity increment can be the fixed first preset capacity increment.

When the number of cycles is greater than or equal to the second threshold, the set capacity is taken as the second set capacity, and the preset capacity increment is taken as the second preset capacity increment. It should be noted that when the number of cycles is greater than or equal to the second threshold, the set capacity may be taken as the fixed second preset capacity, and the preset capacity increment may be taken as the fixed second preset capacity increment.

That is, the first set capacity and the second set capacity corresponding to different threshold intervals of the cycle number are different, and the higher the average cycle number corresponding to the threshold interval where the cycle number is located, the lower the corresponding first set capacity and the second set capacity.

Specifically, taking a lithium-ion battery with a cycle life of 400 times and a rated capacity of 2000 mAh as an example, the value of the first threshold can be 0, the value of the second threshold can be 200, the first set capacity can be 2000 mAh, the second set capacity can be 1900 mAh, the first set capacity increment can be 50 mAh, and the second set capacity increment can be 30 mAh.

At this time, the cycle life can be divided into two intervals, including a first interval ([0,200)) and a second interval ([200,400]). For the number of cycles whose values are in the first interval, the corresponding set capacity has the same value, and the corresponding preset capacity increment has the same value. For the number of cycles whose values are in the second interval, the corresponding set capacity has the same value, and the corresponding preset capacity increment has the same value. For the number of cycles whose values are in the first interval and the number of cycles whose values are in the second interval, the corresponding set capacity has different values, and the corresponding preset capacity increment has different values.

That is, when the number of cycles is greater than or equal to 0 and less than 200, the set capacity is the first set capacity, that is, 2000 mAh; the value of the preset capacity increment can be the first preset capacity increment, that is, 50 mAh. When the number of cycles is greater than or equal to 200, the set capacity is the second set capacity, that is, 1900 mAh; the value of the preset capacity increment can be the second preset capacity increment, that is, 30 mAh.

It should be noted that the method provided in this example may include multiple thresholds, for example, a first threshold, a second threshold, a third threshold, a fourth threshold, and so on.

When the cycle life is divided by setting multiple thresholds such as a first threshold, a second threshold, a third threshold, and a fourth threshold, correspondingly, the set capacity and the preset capacity increment also have multiple corresponding values.

It can be understood that no matter how many intervals the cycle life is divided into, when the value of the number of cycles increases from one interval to another interval, the value of the set capacity decreases, and the value of the preset capacity increment also decreases.

In some embodiments, the method further comprises:

Monitoring the real-time charging current of the electric energy storage unit;

When the real-time charging current is less than or equal to the preset cut-off current, charging is stopped.

Exemplarily, the preset cut-off current is determined according to the preset capacity increment.

Exemplarily, after the real-time charging capacitance is greater than or equal to the set capacity, the electric energy storage unit may continue to be charged by trickle charging.

As the number of cycles increases, the increase in the internal resistance of the energy storage unit will cause the charging current in the above trickle charging process to decrease. When the real-time charging current decreases to be equal to or less than the preset cut-off current, if the energy storage unit continues to be charged, the charging efficiency is low due to the small real-time charging current, which will extend the charging time and even damage the energy storage unit.

In the embodiment of the present disclosure, by setting a preset cut-off current determined according to a preset capacity increment, after the real-time charging capacity is greater than or equal to the set capacity, the real-time charging current is monitored, and charging is stopped when the real-time charging current is less than or equal to the preset cut-off current. This can stop charging the energy storage unit in time, while ensuring the charging time, it also protects the energy storage unit, which is beneficial to ensuring user experience.

Example 1

With the development of the fifth-generation mobile communication technology (5G), more and more things in life and work can be done through the Internet. Mobile terminals such as mobile phones, as the entrance to the mobile Internet, are increasingly affecting various areas of users' lives. Users' demands for mobile phones are also increasing. For example, users need the battery of their mobile phones to have a larger capacity and a faster charging speed.

In the process of charging the battery, in order to achieve the saturation of the battery power, it is usually possible to first enter the fast charging stage and then the trickle charging stage. Among them, the trickle charging stage can be used to make up for the capacity loss caused by self-discharge of the battery after it is fully charged, thereby extending the battery life.

In the related art, since the charging current in the trickle charging stage changes in real time, charging stops when the charging current decreases to equal the charging cut-off current. It should be pointed out that since the charging current in the trickle charging stage is small, the charging time is long. Therefore, in order to meet the demand for fast charging, in the related art, the charging time can be shortened by increasing the value of the charging cut-off current.

However, when the value of the charging cut-off current increases, the trickle charging time is shortened, so that when the charging current is reduced to the charging cut-off current, the battery has not reached the saturation state, resulting in a shortened battery usage time after one charge, affecting the user experience.

Moreover, as the number of charging cycles increases, the internal resistance of the battery will also increase, further resulting in a decrease in the charging current during the trickle charging stage. Therefore, as the number of cycles increases, shortening the charging time by increasing the charging cut-off current will result in a smaller actual capacity in the battery when charging stops, resulting in a shorter battery life after charging is completed. In addition, there will be a significant difference in the actual capacity of the battery each time charging stops, reducing the stability of the available power after each charge during the phone's life cycle.

In order to meet the user's demand for fast charging of mobile terminals such as mobile phones, while ensuring that the actual capacity of the mobile phone is within a reasonable range when charging is completed and does not affect the normal use of the user, this example takes the electric energy storage unit as a battery as an example to provide a charging control method, the method comprising the following steps:

Step 1: During the charging process of the battery, the real-time charging capacity (Q _bat ) of the battery is accumulated through the fuel meter, and the real-time charging current (I _t ) is determined.

Step 2: During the battery charging process, when the real-time charging capacity is greater than or equal to the set capacity, the charging capacity increment (Q _t ) within a preset time (t, t>0) is monitored in real time by the charging control integrated circuit. Here, the preset time may include: 1 minute, 3 minutes or 5 minutes, etc.

Step 3: When the charging capacity increment within the preset time is less than or equal to the preset capacity increment, stop charging. Alternatively, when the real-time charging capacity is greater than or equal to the set capacity, and the real-time charging current is less than or equal to the above-mentioned preset cut-off current (I _min ), stop charging immediately.

It should be pointed out that when charging is stopped because the charging capacity increment within the preset time is less than or equal to the preset capacity increment, the real-time charging current at this moment can be regarded as the preset cut-off current.

Exemplarily, the set capacity may be represented by the product of the rated capacity (Q _min ) and a first percentage (A%), and the preset capacity increment may be represented by the product of the cut-off capacity increment (Q _op ) and a second percentage (B%).

For example, the rated capacity may be equal to the capacity marked on the battery nameplate. When the battery has no nameplate, or the capacity is not marked on the battery nameplate, the rated capacity may also be determined by performing an experimental test on a sample battery at a preset temperature.

Exemplarily, the cut-off capacity increment and the preset cut-off current may be determined by experimentally testing sample batteries under preset temperature conditions.

Specifically, the method for determining the rated capacity, the cut-off capacity increment and the preset cut-off current may include: within a preset temperature range (e.g., 23 degrees Celsius to 27 degrees Celsius), the sample battery is experimentally tested by a standard charge and discharge method to determine the rated capacity of the sample battery and the preset cut-off current of the sample; during the charging stage of the sample battery, the real-time charging capacity of the sample battery is accumulated by the fuel gauge, and the real-time charging current of the sample battery is determined. After the actual charging capacity of the sample battery is greater than or equal to the rated capacity, the charging capacity increment of the battery within a preset time is monitored, and charging is stopped under the conditions of different sample cut-off capacity increments.

By comparing the actual capacity and charging time of the sample battery when charging is stopped under different values of the sample cutoff capacity increment, the sample cutoff capacity increment in which the actual capacity of the battery is within a reasonable range and the charging time is also within a reasonable range when charging is stopped is selected as the above-mentioned cutoff capacity increment.

Here, the standard charging and discharging method may include: for a battery in a minimum power state, first charging the battery using a constant current charging method, then constant voltage charging, and finally trickle charging until the battery is determined to be saturated by a fuel gauge; finally discharging the saturated battery to the minimum power state.

Here, the most suitable time to stop charging may mean that the actual capacity of the battery is larger at this time, and the charging time for stopping charging at this time is also shorter.

For example, for a sample battery with a rated capacity of 2000 mAh, the minimum capacity may be 2000 mAh, the preset time may be 5 minutes, the cut-off capacity increment may be 50 mAh, and the preset cut-off current may be 100 mA.

It is understandable that the reasonable range of actual charging capacity and the reasonable range of charging time can be specifically set according to user needs and the product positioning of the battery.

For example, for a sample battery with a rated capacity of 2000 mAh, since the battery capacity is set redundantly during the battery design process, it can be considered that the reasonable range of the actual battery capacity after charging is completed may include: 1600 mAh to 2100 mAh, or 1800 mAh to 2200 mAh, etc. When the capacity of the battery after charging is within a reasonable range, it can be considered that the capacity stored in the battery after one charge is completed can meet the needs of the user.

For another example, for a sample battery with a rated capacity of 2000 mAh, it can be considered that a reasonable range of charging time required to fully charge a 2000 mAh battery may include: 20 minutes to 40 minutes, for example, 25 minutes, 30 minutes or 35 minutes.

It should be pointed out that when determining the rated capacity, a brand new battery can be used as a sample battery, that is, a battery with a cycle number of 0 can be used as a sample battery. For a battery with a cycle number of 0, it can be considered that the performance of the sample battery remains at the factory setting and has not been damaged due to cyclic charge and discharge.

It can be understood that the performance and type of the sample battery are the same as those of the battery that actually needs to be charged.

In some embodiments, the set capacity comprises the product of the rated capacity of the electric energy storage unit and a first percentage;

The preset capacity increment comprises the product of the cut-off capacity increment of the electric energy storage unit and a second percentage;

The adjusting the set capacity and the preset capacity increment according to the number of cycles of the electric energy storage unit includes:

When the number of cycles of the electric energy storage unit increases, lowering the values of the first percentage and the second percentage;

The rated capacity, the cut-off capacity increment, the corresponding relationship between the number of cycles and the first percentage, and the corresponding relationship between the number of cycles and the second percentage are determined based on charge and discharge test training of a sample energy storage unit at a preset temperature.

Exemplarily, the values of the first percentage and the second percentage may be adjusted according to the number of cycles of the battery.

For example, when the number of cycles is _N1 , the value of the first percentage may be _A1 %, and the value of the second percentage may be _B1 %; when the number of cycles is _N2 , the value of the first percentage may be _A2 %, and the value of the second percentage may be _B2 %; ...; when the number of cycles reaches _Nk , the value of the first percentage may be _Ak %, and the value of the second percentage may be _Bk %. Wherein, _{N1≤N2≤ …} ≤Nk, _{100≥A1≥A2≥ … ≥Ak} ＞0 _{, B1≥B2≥ … ≥Bk} ＞0.

For another example, when the number of cycles is greater than or equal to 0 and less than 200, the first percentage may be 100% and the second percentage may be 100%. When the number of cycles is greater than or equal to 200 and less than 400, the first percentage may be 95% and the second percentage may be 60%.

It should be noted that the corresponding relationship between the number of battery cycles and the value of the first percentage and the value of the second percentage can also be determined by performing experimental tests on sample batteries.

This example first determines the rated capacity of the battery, the charging cutoff capacity, the preset cutoff current, the relationship between the number of cycles and the first percentage value, and the relationship between the number of cycles and the second percentage value through experimental tests. Then, during the charging process, after the real-time charging capacity reaches the set capacity, the charging capacity increment within the preset time is used as the basis for determining whether to stop charging, and the set capacity and the preset capacity increment are dynamically adjusted according to the number of cycles, thereby realizing automatic dynamic adjustment of the charging stop condition. While ensuring that the actual charged capacity of the battery is within a reasonable range and that the power stability when charging is stopped during the battery cycle life is ensured, the charging time is also ensured to be within a reasonable range, which is beneficial to ensuring user experience.

In addition, this example distinguishes between different battery cycle times and adjusts the set capacity and preset capacity increment according to the battery cycle times, thereby ensuring that the battery capacity remains within a certain range in the later stages of the battery cycle life, thereby improving the user experience.

Furthermore, since the internal resistance of the battery changes continuously during the charging process, compared with using a fixed cut-off current as the basis for judging whether to stop charging throughout the entire battery cycle life, this example uses the charging capacity increment within a preset time as the basis for judging whether to stop charging after the real-time charging capacity is greater than or equal to the set capacity. This can achieve real-time changes in the charging cut-off current, thereby achieving the purpose of ensuring the battery capacity, reducing the probability of low charging capacity due to a fixed cut-off current, and is beneficial to user experience.

Fig. 2 is a block diagram of an electronic device 100 according to an exemplary embodiment. Referring to Fig. 2, the electronic device 100 includes:

The electric energy storage unit 110 is used to store the electric energy provided by the power supply device;

The monitoring unit 120 is electrically connected to the electric energy storage unit 110; the monitoring unit 120 is used to monitor the real-time charging capacity of the electric energy storage unit 110 during the charging process;

The control unit 130 is electrically connected to the electric energy storage unit 110 and to the monitoring unit 120;

The control unit 130 is configured to monitor the charging capacity increment of the electric energy storage unit 110 within a preset time period when the real-time charging capacity is greater than or equal to the set capacity;

The control unit 130 is further configured to stop charging when the charging capacity increment within the preset time period is less than or equal to the preset capacity increment.

The electronic device 100 may include: a mobile terminal, a wearable device or a smart home device, etc. For example, a mobile phone, a notebook computer, a tablet computer, a smart bracelet or a sweeping robot, etc.

The power storage unit 110 may include a rechargeable battery, such as a lithium-ion battery, a lead-acid battery, or the like.

The monitoring unit 120 may include a functional unit for monitoring the real-time charging capacity of the electric energy storage unit, for example, a fuel gauge.

The control unit 130 may include an integrated circuit having a control function, such as a central processing unit or an application processor.

In the embodiment of the present disclosure, after the real-time charging capacity is greater than or equal to the set capacity, the charging capacity increment within the preset time is used as the condition for determining whether to stop charging. The charging capacity increment within the preset time is used to reflect the change in charging speed, which reduces the influence of the change in the internal resistance of the energy storage unit on determining whether to stop charging. While ensuring that the charging time is short, it is conducive to ensuring that the actual charging capacity of the energy storage unit meets the user's needs when each charging is completed.

In some embodiments, the control unit 130 is further configured to adjust the set capacity and the preset capacity increment according to the number of cycles of the electric energy storage unit 110 .

In some embodiments, the set capacity includes the product of the rated capacity of the energy storage unit 110 and the first percentage;

The preset capacity increment comprises the product of the cut-off capacity increment of the electric energy storage unit 110 and the second percentage;

The control unit is specifically configured to reduce the values of the first percentage and the second percentage when the number of cycles of the electric energy storage unit increases;

The rated capacity, the cut-off capacity increment, the corresponding relationship between the number of cycles and the first percentage, and the corresponding relationship between the number of cycles and the second percentage are determined based on charge and discharge test training of a sample energy storage unit at a preset temperature.

In some embodiments, the control unit 130 is specifically configured to lower the set capacity and the preset capacity increment when the number of cycles of the electric energy storage unit 110 increases.

In some embodiments, the control unit 130 is also used to determine the correspondence between the number of cycles of the energy storage unit 110 and the set capacity, and the correspondence between the number of cycles of the energy storage unit 110 and the preset capacity increment based on the results of charge and discharge test training of the sample energy storage unit at a preset temperature.

Exemplarily, the control unit 130 is specifically configured to reduce the value of the set capacity from the first set capacity to the second set capacity when the number of cycles increases from the first threshold to the second threshold;

The control unit 130 is further configured to reduce the value of the preset capacity increment from the first preset capacity increment to the second preset capacity increment when the number of cycles increases from the first threshold to the second threshold;

The first threshold, the second threshold, the first set capacity, the second set capacity, the first preset capacity increment and the second preset capacity increment are all obtained by performing charge and discharge test training on a sample energy storage unit at a preset temperature.

Compared with setting fixed values for the set capacity and the preset capacity increment, the embodiment of the present disclosure can timely adjust the values of the set capacity and the preset capacity increment according to the number of cycles of the electric energy storage unit, thereby realizing automatic dynamic adjustment of the charging stop condition. While ensuring that the capacity actually charged into the electric energy storage unit when charging is stopped is within a reasonable range and that the power stability is ensured each time charging is stopped during the cycle life of the electric energy storage unit, the charging time is also ensured to be within a reasonable range, which is beneficial to ensuring user experience.

In some embodiments, the control unit 130 is further configured to monitor the real-time charging current of the energy storage unit 110;

The control unit 130 is further configured to stop charging when the real-time charging current is less than or equal to a preset cut-off current.

In some embodiments, the preset cut-off current is determined according to the preset capacity increment.

Regarding the device in the above embodiment, the specific manner in which each unit performs the operation has been described in detail in the embodiment of the method, and will not be elaborated here.

Fig. 3 is a block diagram of a device 800 for charging control according to an exemplary embodiment. For example, the device 800 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

3 , device 800 may include one or more of the following components: a processing component 802 , a memory 804 , a power component 806 , a multimedia component 808 , an audio component 810 , an input/output (I/O) interface 812 , a sensor component 814 , and a communication component 816 .

The processing component 802 generally controls the overall operation of the device 800, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to complete all or part of the steps of the above-mentioned method. In addition, the processing component 802 may also include one or more modules to facilitate the interaction between the processing component 802 and other components. For example, the processing component 802 may include a multimedia module to facilitate the interaction between the multimedia component 808 and the processing component 802.

The memory 804 is configured to store various types of data to support operations on the device 800. Examples of such data include instructions for any application or method operating on the device 800, contact data, phone book data, messages, pictures, videos, etc. The memory 804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk, or optical disk.

The power component 806 provides power to various components of the device 800. The power component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the device 800.

The multimedia component 808 includes a screen that provides an output interface between the device 800 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front camera and/or a rear camera. When the device 800 is in an operating mode, such as a shooting mode or a video mode, the front camera and/or the rear camera may receive external multimedia data. Each front camera and/or the rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a microphone (MIC), and when the device 800 is in an operating mode, such as a call mode, a recording mode, and a speech recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 804 or sent via the communication component 816. In some embodiments, the audio component 810 also includes a speaker for outputting audio signals.

I/O interface 812 provides an interface between processing component 802 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, a home button, a volume button, a start button, and a lock button.

The sensor assembly 814 includes one or more sensors for providing various aspects of status assessment for the device 800. For example, the sensor assembly 814 can detect the open/closed state of the device 800, the relative positioning of components, such as the display and keypad of the device 800, and the sensor assembly 814 can also detect the position change of the device 800 or a component of the device 800, the presence or absence of user contact with the device 800, the orientation or acceleration/deceleration of the device 800, and the temperature change of the device 800. The sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 814 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 816 is configured to facilitate wired or wireless communication between the device 800 and other devices. The device 800 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology or other technologies.

In an exemplary embodiment, the apparatus 800 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors or other electronic components to perform the above method.

In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 804 including instructions, and the instructions can be executed by the processor 820 of the device 800 to perform the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

A non-transitory computer-readable storage medium, when instructions in the storage medium are executed by a processor of a mobile terminal, enables the mobile terminal to execute the steps in the charging control method provided in an embodiment of the present disclosure.

Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the embodiments disclosed herein. The present disclosure is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and embodiments are to be regarded as exemplary only, and the true scope and spirit of the present disclosure are indicated by the appended claims.

It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (12)

1. A charging control method, characterized in that it is applied to an electronic device including an electric energy storage unit, the method comprising: During the charging process, monitoring the real-time charging capacity of the electric energy storage unit; When the real-time charging capacity is greater than or equal to the set capacity, monitoring the charging capacity increment of the electric energy storage unit within a preset time period; When the charging capacity increment within the preset time period is less than or equal to the preset capacity increment, charging is stopped. 2. The method according to claim 1, characterized in that the method further comprises: The set capacity and the preset capacity increment are adjusted according to the number of cycles of the electric energy storage unit. 3. The method according to claim 2, characterized in that The set capacity includes the product of the rated capacity of the electric energy storage unit and the first percentage; The preset capacity increment comprises the product of the cut-off capacity increment of the electric energy storage unit and a second percentage; The adjusting the set capacity and the preset capacity increment according to the number of cycles of the electric energy storage unit includes: When the number of cycles of the electric energy storage unit increases, lowering the values of the first percentage and the second percentage; The rated capacity, the cut-off capacity increment, the corresponding relationship between the number of cycles and the first percentage, and the corresponding relationship between the number of cycles and the second percentage are determined based on charge and discharge test training of a sample energy storage unit at a preset temperature. 4. The method according to claim 2, characterized in that the adjusting the values of the set capacity and the preset capacity increment according to the number of cycles of the electric energy storage unit comprises: When the number of cycles of the electric energy storage unit increases, the set capacity and the preset capacity increment are adjusted down. 5. The method according to claim 4, characterized in that before adjusting the set capacity and the value of the preset capacity increment according to the number of cycles of the electric energy storage unit, it also includes: According to the result of the charge and discharge test training of the sample energy storage unit at the preset temperature, the corresponding relationship between the cycle number of the energy storage unit and the set capacity, and the corresponding relationship between the cycle number of the energy storage unit and the preset capacity increment are determined. 6. An electronic device, comprising: An electric energy storage unit, used for storing electric energy provided by the power supply equipment; A monitoring unit is electrically connected to the electric energy storage unit; the monitoring unit is used to monitor the real-time charging capacity of the electric energy storage unit during the charging process; a control unit, electrically connected to the electric energy storage unit and to the monitoring unit; The control unit is configured to monitor the charge capacity increment of the electric energy storage unit within a preset time period when the real-time charge capacity is greater than or equal to the set capacity; The control unit is further configured to stop charging when the charging capacity increment within the preset time period is less than or equal to a preset capacity increment. 7. The device according to claim 6, characterized in that The control unit is further used to adjust the values of the set capacity and the preset capacity increment according to the number of cycles of the electric energy storage unit. 8. The device according to claim 7, characterized in that The set capacity includes the product of the rated capacity of the electric energy storage unit and the first percentage; The preset capacity increment comprises the product of the cut-off capacity increment of the electric energy storage unit and a second percentage; The control unit is specifically configured to reduce the values of the first percentage and the second percentage when the number of cycles of the electric energy storage unit increases; The rated capacity, the cut-off capacity increment, the corresponding relationship between the number of cycles and the first percentage, and the corresponding relationship between the number of cycles and the second percentage are determined based on charge and discharge test training of a sample energy storage unit at a preset temperature. 9. The device according to claim 7, characterized in that The control unit is specifically used to lower the value of the set capacity and the preset capacity increment when the number of cycles of the electric energy storage unit increases. 10. The device according to claim 7, characterized in that The control unit is also used to determine the corresponding relationship between the number of cycles of the energy storage unit and the set capacity, and the corresponding relationship between the number of cycles of the energy storage unit and the preset capacity increment based on the results of charge and discharge test training of the sample energy storage unit at a preset temperature. 11. A charging control device, comprising: processor; memory for storing processor executable instructions; Wherein, the processor is configured to: implement the steps in the method according to any one of claims 1 to 5 when executing the executable instructions. 12. A non-transitory computer-readable storage medium, when the instructions in the storage medium are executed by a processor of a mobile terminal, the mobile terminal is enabled to perform the steps in the method according to any one of claims 1 to 5.