Charging control method and device, electronic equipment and storage medium

Abstract

The invention relates to a charging control method and device, electronic equipment and a storage medium. The method comprises the steps that when a battery meets a first charging cut-off condition corresponding to a first charging stage, the first electric quantity of the battery is acquired; if the first electric quantity is lower than the target preset electric quantity, entering a second charging stage to continue charging; wherein the second charging stage comprises a plurality of charging sub-stages, and the charging voltage of the current charging sub-stage in the plurality of charging sub-stages is smaller than the charging voltage of the adjacent next charging sub-stage; and if the electric quantity of the battery in any charging sub-stage reaches the target preset electric quantity, stopping charging. Through the method disclosed by the invention, the charging electric quantity of the battery can be improved, and the standby time of equipment where the battery is located is prolonged.

Description

Technical Field

[0001] The present disclosure relates to the technical field of batteries, and in particular, to a charging control method, apparatus, electronic device, and storage medium. Background Art

[0002] Rechargeable batteries are the main power supply components for products such as electronic devices and electric vehicles. When the battery leaves the factory, charging cut-off conditions are set for the battery according to information such as the type and capacity of each battery, and the charging process of the battery is controlled according to the charging cut-off conditions.

[0003] However, as the battery is used for a longer time, the battery will age, resulting in a change in the internal resistance of the battery. As a result, the charging cut-off condition is reached before the battery is fully charged, and charging stops, affecting the maximum charging capacity of the battery and further affecting the standby time of the device where the battery is located. Summary of the Invention

[0004] To overcome the problems in the related art, the present disclosure provides a charging control method, apparatus, electronic device, and storage medium, which can increase the charging capacity of the battery by increasing the charging voltage, and further increase the standby time of the device where the battery is located.

[0005] According to a first aspect of an embodiment of the present disclosure, a charging control method is provided, including:

[0006] When the battery meets the first charging cut-off condition corresponding to the first charging stage, obtain the first battery charge;

[0007] If the first battery charge is lower than the target preset charge, control the battery to enter the second charging stage to continue charging; wherein, the second charging stage includes a plurality of charging sub-stages, and the charging voltage of the current charging sub-stage in the plurality of charging sub-stages is less than the charging voltage of the adjacent next charging sub-stage;

[0008] If the battery charge reaches the target preset charge in any of the charging sub-stages, stop charging.

[0009] In some embodiments, the method further includes:

[0010] When the battery meets the second charging cut-off condition corresponding to the current charging sub-stage, obtain the second battery charge; wherein, the second charging cut-off conditions corresponding to the respective charging sub-stages are different;

[0011] If the second battery charge is lower than the target preset charge, enter the next charging sub-stage adjacent to the current charging sub-stage.

[0012] In some embodiments, the second charging cut-off condition includes a second charging cut-off voltage and a second charging cut-off current; and the step of, if the second battery power is lower than the target preset power, entering the next charging sub-stage adjacent to the current charging sub-stage includes:

[0013] Obtaining the second charging cut-off voltage and the second charging cut-off current corresponding to the current charging sub-stage;

[0014] If the charging voltage of the battery is greater than or equal to the second charging cut-off voltage corresponding to the current charging sub-stage, and the charging current of the battery is less than or equal to the second charging cut-off current corresponding to the current charging sub-stage, enter the next charging sub-stage adjacent to the current charging sub-stage.

[0015] In some embodiments, the target preset power is: the preset power corresponding to the first cycle number of the battery determined based on a preset mapping relationship when the battery meets the first charging cut-off condition.

[0016] In some embodiments, the method further includes:

[0017] If the charging voltage of the battery reaches the limit voltage threshold in any of the charging sub-stages, enter the third charging stage;

[0018] Wherein, the charging current of the battery in the third charging stage is less than the charging current of the battery in the first charging stage.

[0019] In some embodiments, the first charging cut-off condition includes a first charging cut-off voltage and a first charging cut-off current; and the method further includes:

[0020] If the charging voltage of the battery is greater than or equal to the first charging cut-off voltage in the first charging stage, and the charging current of the battery is less than or equal to the first charging cut-off current, it is determined that the battery meets the first charging cut-off condition corresponding to the first charging stage.

[0021] In some embodiments, the difference in the charging voltage of the battery between two adjacent charging sub-stages is the same.

[0022] According to a second aspect of the embodiments of the present disclosure, there is provided a charging control device, including:

[0023] A first acquisition module, configured to acquire the first power of the battery when the battery meets the first charging cut-off condition corresponding to the first charging stage;

[0024] A control module, configured to control the battery to enter a second charging stage for continuous charging if the first battery power is lower than a target preset power; wherein, the second charging stage includes a plurality of charging sub-stages, and the charging voltage of the current charging sub-stage in the plurality of charging sub-stages is less than the charging voltage of the adjacent next charging sub-stage;

[0025] A stop module, configured to stop charging if the battery power reaches the target preset power in any one of the charging sub-stages.

[0026] In some embodiments, the device further includes:

[0027] A second acquisition module, configured to acquire the second battery power when the battery meets the second charging cut-off condition corresponding to the current charging sub-stage; wherein, the second charging cut-off conditions corresponding to each of the charging sub-stages are different;

[0028] A first entry module, configured to enter the next charging sub-stage adjacent to the current charging sub-stage if the second battery power is lower than the target preset power.

[0029] In some embodiments, the second charging cut-off condition includes a second charging cut-off voltage and a second charging cut-off current; the first entry module is configured to:

[0030] Acquire the second charging cut-off voltage and the second charging cut-off current corresponding to the current charging sub-stage;

[0031] If the charging voltage of the battery is greater than or equal to the second charging cut-off voltage corresponding to the current charging sub-stage, and the charging current of the battery is less than or equal to the second charging cut-off current corresponding to the current charging sub-stage, enter the next charging sub-stage adjacent to the current charging sub-stage.

[0032] In some embodiments, the target preset power is: the preset power corresponding to the first cycle number of the battery determined based on a preset mapping relationship when the battery meets the first charging cut-off condition.

[0033] In some embodiments, the device further includes:

[0034] A second entry module, configured to enter a third charging stage if the charging voltage of the battery reaches a limit voltage threshold in any one of the charging sub-stages;

[0035] Wherein, the charging current of the battery in the third charging stage is less than the charging current of the battery in the first charging stage.

[0036] In some embodiments, the first charging cut-off condition includes a first charging cut-off voltage and a first charging cut-off current; the device further includes:

[0037] A determination module, configured to determine that the battery meets the first charging cut-off condition corresponding to the first charging stage if the charging voltage of the battery in the first charging stage is greater than or equal to the first charging cut-off voltage and the charging current of the battery is less than or equal to the first charging cut-off current.

[0038] In some embodiments, the difference in the charging voltage of the battery in two adjacent charging sub-stages is the same.

[0039] According to a third aspect of the embodiments of the present disclosure, there is provided an electronic device, including:

[0040] A memory for storing processor-executable instructions;

[0041] A processor, connected to the memory;

[0042] Wherein, the processor is configured to execute the above-mentioned charging control method.

[0043] According to a fourth aspect of the embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium, which, when the instructions in the storage medium are executed by a processor, implements the above-mentioned charging control method.

[0044] The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects:

[0045] In the embodiments of the present disclosure, if the battery power is lower than the target preset power when the battery meets the first charging cut-off condition corresponding to the first charging stage, the battery is controlled to enter the second charging stage to continue charging. And in the second charging stage, the charging process of the battery is accelerated by increasing the charging voltage, so that the battery can be charged to the target preset power in a shorter time. By controlling the charging process of the battery through the charging control method provided by the embodiments of the present disclosure, the maximum charging power of the battery can be increased, and further the purpose of increasing the standby time of the device where the battery is located can be achieved.

[0046] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present disclosure and used together with the specification to explain the principles of the present disclosure.

[0048] Figure 1 It is a schematic flowchart of a charging control method shown according to an exemplary embodiment.

[0049] Figure 2 is a schematic flow chart of a charging control method shown according to another exemplary embodiment.

[0050] Figure 3 is a schematic flow chart of a charging control method shown according to yet another exemplary embodiment

[0051] Figure 4 is a schematic flow chart of a charging control method shown according to yet another exemplary embodiment.

[0052] Figure 5 is a block diagram of a charging control device shown according to an exemplary embodiment.

[0053] Figure 6 is a schematic structural diagram of an electronic device shown according to an exemplary embodiment. Detailed implementation manners

[0054] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0055] When the battery leaves the factory, a charging cut-off condition is usually set for each battery according to battery parameters such as the battery type and battery capacity of each battery. During the entire life cycle of the battery, the microcontroller connected to the battery will obtain the charging current and charging voltage of the battery at preset time intervals during the battery charging process, and when it is determined that the charging current and charging voltage of the battery reach the charging cut-off condition, the microcontroller controls the battery to stop charging.

[0056] However, as the battery usage time increases, the battery will age, resulting in a change in the battery internal resistance, and further resulting in a change in the charging voltage and charging current of the battery. At this time, if the charging cut-off condition set for the battery at the factory is still used to control the battery charging process, it may occur that the charging cut-off condition is reached and the charging stops when the battery is not fully charged, affecting the maximum charging capacity of the battery, and further affecting the standby time of the electronic device where the battery is located.

[0057] Refer to Figure 1 , Figure 1 is a schematic flow chart of a charging control method shown according to an exemplary embodiment. As Figure 1 shown, the charging control method mainly includes the following steps:

[0058] S101: When the battery meets the first charging cut-off condition corresponding to the first charging stage, obtain the first battery power.

[0059] It can be understood that different charging voltages, charging currents, and charging cut-off conditions can be set for the battery in different charging stages. When the battery meets the first charging cut-off condition corresponding to the first charging stage, it means that the battery should no longer be charged with the charging current and / or charging voltage corresponding to the first charging stage. At this time, the battery power can be obtained to get the first battery power.

[0060] In some embodiments, the above-mentioned battery is a battery that can be charged and discharged multiple times. Exemplarily, the battery may specifically include, but is not limited to, nickel-cadmium batteries, nickel-metal hydride batteries, lithium-ion batteries, lithium polymer batteries, and / or lead-acid batteries, etc.

[0061] In some embodiments, the above-mentioned first charging cut-off condition can be the charging cut-off condition set for the battery when it leaves the factory. That is, the charging cut-off condition when the battery is charged to 100% power under normal conditions.

[0062] S102: If the first battery power is lower than the target preset power, control the battery to enter the second charging stage and continue charging.

[0063] Among them, the second charging stage includes multiple charging sub-stages, and the charging voltage of the current charging sub-stage in the multiple charging sub-stages is less than the charging voltage of the adjacent next charging sub-stage.

[0064] It can be understood that the above-mentioned target preset power can be the power when the battery is charged to 100%.

[0065] In some embodiments, the above-mentioned target preset power can be determined according to the rated capacity of the battery.

[0066] Exemplarily, the power indicated by the rated capacity of the battery can be used as the target preset power.

[0067] Exemplarily, considering that after the battery ages, the battery capacity (the power when the battery is charged to 100%) will decrease. Therefore, the preset target power can also be determined according to the rated capacity of the battery and the aging degree of the battery. Among them, the greater the aging degree of the battery, the smaller the determined target preset power of the battery.

[0068] In an embodiment of the present disclosure, when the first battery power is obtained by the above S101 and meets the first charging cut-off condition, the first battery power is compared with the target preset power. If the first battery power reaches the target preset power, it is determined that the battery is fully charged in the first charging stage, and at this time, charging of the battery is stopped. If the first battery power is lower than the target preset power, it is determined that the battery is not fully charged in the first charging stage. At this time, the battery can be controlled to enter the second charging stage to continue charging the battery.

[0069] In some embodiments, the charging voltage in the second charging stage may be greater than the charging voltage in the first charging stage.

[0070] In some embodiments, the number of charging sub-stages included in the second charging stage can be set as needed, and the embodiments of the present disclosure do not limit this.

[0071] Exemplarily, the number of charging sub-stages included in the second charging stage can be any value from 2 to 5.

[0072] In some embodiments, the charging voltage of the current charging sub-stage is less than the charging voltage of the adjacent next charging sub-stage, including: the maximum charging voltage of the current charging sub-stage is less than the maximum charging voltage of the adjacent next charging sub-stage.

[0073] In other embodiments, if the charging process of the battery includes a constant voltage stage, the charging voltage of the current charging sub-stage is less than the charging voltage of the adjacent next charging sub-stage, including: the charging voltage of the constant voltage stage in the current charging sub-stage is less than the charging voltage of the constant voltage stage in the adjacent next charging sub-stage.

[0074] In other embodiments, when the charging process of the battery includes a constant current stage and a constant voltage stage, the charging voltage of the current charging sub-stage is less than the charging voltage of the adjacent next charging sub-stage, and further includes that the first charging voltage of the current charging sub-stage is less than the second charging voltage of the adjacent next charging sub-stage, where the first charging voltage is the charging voltage when the battery in the current charging sub-stage changes from the constant current stage to the constant voltage stage, and the second charging voltage is the charging voltage when the battery in the next charging sub-stage changes from the constant current stage to the constant voltage stage.

[0075] In some embodiments, if the first battery power when the battery meets the first charging cut-off condition is lower than the target preset power, the third charging voltage when the battery meets the first charging cut-off condition can also be obtained. If the third charging voltage reaches the limit voltage threshold, the battery is controlled to enter the third charging stage to continue charging. If the third charging voltage is less than the limit voltage threshold, the battery is controlled to enter each sub-stage of the second charging stage to continue charging.

[0076] Among them, the above-mentioned limit voltage threshold is the maximum charging voltage that the battery can withstand.

[0077] In some embodiments, the charging voltage of the battery in the third charging stage can be the maximum charging voltage that the battery can withstand, and the charging current in the third charging stage is less than the charging current in the first charging stage.

[0078] Exemplarily, the value range of the charging current in the third charging stage can be 50% to 80% of the charging current in the first charging stage.

[0079] S103: If the battery's power reaches the target preset power in any charging sub-stage, stop charging.

[0080] It can be understood that after the battery enters the second charging stage, the battery's power can be obtained every first preset time interval. If the battery's power reaches the target preset power, it means that the battery is full at this time, and stop charging the battery. If the battery's power is lower than the preset target power, continue to charge the battery.

[0081] In some embodiments, the above-mentioned first preset time interval can be set as needed, and the present disclosure implementation does not limit this.

[0082] Exemplarily, the value range of the above-mentioned first preset time interval can be 5 to 10 minutes.

[0083] It should be noted that in the embodiments of the present disclosure, "reach" at least includes higher than or equal to.

[0084] In the embodiments of the present disclosure, if the power of the battery is lower than the target preset power when the battery meets the first charging cut-off condition corresponding to the first charging stage, control the battery to enter the second charging stage to continue charging. And in the second charging stage, the charging process of the battery will be accelerated by increasing the charging voltage, so that the battery can be charged to the target preset power in a shorter time. By controlling the charging process of the battery through the charging control method provided by the embodiments of the present disclosure, the maximum charging power of the battery can be increased, and thus the purpose of increasing the standby time of the device where the battery is located can be achieved.

[0085] Reference Figure 2 , Figure 2 is a schematic flowchart of a charging control method shown according to another exemplary embodiment. In the following, the charging control method provided by the embodiments of the present disclosure will be further introduced in combination with the steps in Figure 2 . This method further includes:

[0086] S201: When the battery meets the second charging cut-off condition corresponding to the current charging sub-stage, obtain the second power of the battery; where the second charging cut-off conditions corresponding to each of the charging sub-stages are different.

[0087] It can be understood that different second charging cut-off conditions are set for the battery in different charging sub-stages of the second charging stage. Therefore, after the battery enters any charging sub-stage of the second charging stage, the second charging cut-off condition corresponding to this charging sub-stage can be obtained. When the battery is charging in this sub-charging stage, if the second charging cut-off condition corresponding to this sub-charging stage is satisfied, the charging power of the battery is obtained to get the second power.

[0088] In some embodiments, the above-mentioned second charging cut-off condition includes a second charging cut-off voltage and / or a second charging cut-off current. The second charging cut-off conditions corresponding to the respective charging sub-stages of the second charging stage are different, including: the second charging cut-off voltages corresponding to the respective charging sub-stages are different, and / or the second charging cut-off currents corresponding to the respective charging sub-stages are different.

[0089] In some embodiments, the second charging cut-off current is greater than the first charging cut-off current, and / or the second charging cut-off voltage is greater than the first charging cut-off voltage.

[0090] In other embodiments, the second charging cut-off current corresponding to the current charging sub-stage is less than the second charging cut-off current corresponding to the next adjacent charging sub-stage. The second charging cut-off voltage corresponding to the current charging sub-stage is less than the second charging cut-off voltage corresponding to the next adjacent charging sub-stage.

[0091] In some embodiments, S201 includes: when the charging voltage of the battery is greater than or equal to the second charging cut-off voltage corresponding to the current charging sub-stage, it is determined that the battery satisfies the second charging cut-off condition corresponding to the current charging sub-stage. At this time, the power of the battery when it satisfies the second charging cut-off condition corresponding to the current charging sub-stage is obtained to get the second power.

[0092] In other embodiments, S201 further includes: when the charging current of the battery is less than or equal to the second charging cut-off current corresponding to the current charging sub-stage, it is determined that the battery satisfies the second charging cut-off condition corresponding to the current charging sub-stage. At this time, the power of the battery when it satisfies the second charging cut-off condition corresponding to the current charging sub-stage is obtained to get the second power.

[0093] S202: If the second power is lower than the target preset power, enter the next charging sub-stage adjacent to the current charging sub-stage.

[0094] It can be understood that due to different charging sub - phases in the second charging stage, different second charging cut - off conditions are set for the battery. Therefore, after the battery enters any charging sub - phase of the second charging stage, the second charging cut - off condition corresponding to this charging sub - phase can be obtained. During the charging process of the battery in this sub - charging stage, if the second charging cut - off condition corresponding to this sub - charging stage is met, it is determined that the battery has completed the charging of this sub - charging stage. At this time, the second battery power is obtained. Then, the second battery power is compared with the target preset power to determine whether the battery is fully charged. If the battery power has reached the target preset power, it is determined that the battery is fully charged and the charging is stopped. If the second battery power when the battery meets the second charging cut - off condition is lower than the target preset power, it is determined that the battery is not fully charged at present, and the battery is controlled to enter the next charging sub - phase adjacent to the current charging sub - phase to continue charging.

[0095] In some embodiments, referring to Figure 3 , Figure 3 which is a schematic flowchart of a charging control method provided according to another exemplary embodiment, S201 further includes:

[0096] S301: Obtain the second charging cut - off voltage and the second charging cut - off current corresponding to the current charging sub - phase;

[0097] S302: If the charging voltage of the battery is greater than or equal to the second charging cut - off voltage corresponding to the current charging sub - phase, and the charging current of the battery is less than or equal to the second charging cut - off current corresponding to the current charging sub - phase, obtain the second battery power.

[0098] It can be understood that in each charging sub - phase of the battery, both a constant - current stage and a constant - voltage stage are included. In the constant - current stage, the charging current of the battery remains unchanged, and the charging voltage increases with the increase of charging time. When the preset voltage is reached, the charging mode of the battery changes from the constant - current stage to the constant - voltage stage. In the constant - voltage stage, the current starts to decrease and the charging voltage increases slowly. Based on the above - mentioned battery charging process, the charging voltage and charging current of the battery can be obtained every third preset time interval, and the obtained charging voltage is compared with the second charging voltage corresponding to the current charging sub - phase, and the charging current is compared with the second charging cut - off current corresponding to the current charging sub - phase. If the charging voltage of the battery is greater than or equal to the second charging cut - off voltage corresponding to the current charging sub - phase, and the charging current of the battery is less than or equal to the second charging cut - off current corresponding to the current charging sub - phase, it is determined that the battery meets the second charging cut - off condition corresponding to the current charging sub - phase. At this time, the second battery power is obtained.

[0099] In some embodiments, if the current charging sub-phase is the last charging sub-phase of the second charging phase, and the second battery power when the battery meets the second charging cut-off condition corresponding to this charging sub-phase is lower than the target preset power, the battery is controlled to enter the third charging phase to continue charging.

[0100] In some embodiments, the target preset power is: when the battery meets the first charging cut-off condition, the preset power corresponding to the first cycle number of the battery determined based on the preset mapping relationship.

[0101] It can be understood that considering that the battery capacity will decrease as the battery ages, and the cycle number of the battery can reflect the aging degree of the battery to a certain extent. Therefore, the corresponding preset power can be set in advance according to different cycle numbers of the battery to obtain the preset mapping relationship, where the cycle number of the battery is negatively correlated with the preset power. Based on this preset mapping relationship, when it is determined that the battery meets the first charging cut-off condition, the first cycle number of the battery is obtained, and the preset power corresponding to the first cycle number is found from the preset mapping relationship, and this preset power is determined as the target preset power.

[0102] In some embodiments, in the preset mapping relationship, the preset power corresponding to each cycle number can be the maximum power that the battery can be charged to when it reaches this preset cycle number.

[0103] In other embodiments, the preset mapping relationship can also be the corresponding relationship between the cycle number and the preset coefficient. When it is determined that the cycle number of the battery when it meets the first charging cut-off condition is the first cycle number, the first preset coefficient corresponding to this first cycle number can also be obtained by looking up the preset mapping relationship, and the target preset power is determined according to the rated capacity of the battery and the first preset coefficient.

[0104] Exemplarily, the target preset power of the battery can be calculated according to the rated capacity of the battery and the first preset coefficient through the following formula (1).

[0105] Q1 = a * Q0 (1)

[0106] Wherein, Q1 is the target preset power; Q0 is the rated capacity of the battery; a is the preset coefficient, where a can be determined according to the cycle number of the battery, and the more the cycle number, the smaller a is.

[0107] For example, if the cycle number of the battery when it meets the first charging cut-off condition is 256 times, and the first preset coefficient corresponding to 256 found from the preset mapping relationship is 80%, and if the rated capacity of the battery is 4000 mAh, the target preset capacity of 3200 mAh can be obtained through the above formula.

[0108] In some other embodiments, considering that the usage duration of the battery can also reflect the aging degree of the battery to a certain extent. Therefore, when the battery meets the first charging cut-off condition, the duration from the production date of the battery to the current moment can also be obtained, and the target preset power can be determined according to the duration from the production date of the battery to the current moment. Among them, the magnitude of the target preset power is negatively correlated with the duration from the production date of the battery to the current moment.

[0109] In some other embodiments, considering that during the use of the battery, some parameters of the battery can also reflect the aging degree of the battery to a certain extent. Therefore, the battery parameters can also be obtained every second preset duration, and the target preset power of the battery can be determined according to the battery parameters.

[0110] Exemplarily, the above-mentioned battery parameter can be the internal resistance of the battery during charging. The greater the internal resistance of the battery during charging, the more serious the aging degree of the battery. Therefore, the target preset power of the battery can also be determined according to the internal resistance of the battery during charging.

[0111] In some embodiments, the above-mentioned second preset duration can also be set as needed, and the embodiments of the present disclosure do not limit this.

[0112] Exemplarily, the value of the above-mentioned second preset duration can be any number of days from 10 to 100 days.

[0113] In some embodiments, the method further includes:

[0114] If the charging voltage of the battery reaches the limit voltage threshold in any charging sub-stage, enter the third charging stage;

[0115] Among them, the charging current of the battery in the third charging stage is less than the charging current of the battery in the first charging stage.

[0116] It can be understood that since the voltage of the battery is continuously increasing during the charging process, when the charging voltage of the battery has increased to the limit voltage threshold in any charging sub-stage of the second charging stage, if the charging voltage of the battery continues to increase, it may cause irreversible damage to the battery. Therefore, when it is determined that the charging voltage of the battery has reached the limit voltage threshold, the third charging stage can be directly entered. Among them, the charging voltage in the third charging stage is less than or equal to the limit voltage threshold, and the charging current in the third charging stage is less than the charging current in the first charging stage.

[0117] Among them, the above-mentioned limit voltage threshold can be the maximum charging voltage that the battery can withstand.

[0118] In some embodiments, the charging current of the battery in the third charging stage being less than the charging current in the first charging stage includes: the maximum charging current of the battery in the third charging stage being less than the maximum charging current of the battery in the first charging stage.

[0119] In other embodiments, the charging current of the battery in the third charging stage being less than the charging current in the first charging stage includes: the charging current of the battery in the constant current stage of the third charging stage being less than the charging current of the battery in the constant current stage of the first charging stage.

[0120] Exemplarily, the charging current of the battery in the third charging stage can be 50% to 80% of the current of the battery in the first charging stage.

[0121] For example, when the charging current of the battery in the first charging stage is 400 mA, the charging current of the battery in the third charging stage can be 300 mA.

[0122] In some embodiments, the charging voltage of the battery in the third charging stage is less than or equal to the charging voltage of the battery in the first charging stage.

[0123] In some embodiments, the maximum charging voltage of the battery in the third charging stage is less than or equal to the maximum charging voltage of the battery in the first charging stage.

[0124] In other embodiments, the fourth charging voltage of the battery in the third charging stage is less than or equal to the fifth charging voltage of the battery in the first charging stage. Wherein, the fourth charging voltage is the charging voltage of the battery when the battery switches from the constant current stage to the constant voltage stage in the third charging stage, and the fifth charging voltage is the charging voltage of the battery when the battery switches from the constant current stage to the constant voltage stage in the first charging stage.

[0125] In the embodiments of the present disclosure, in the second charging stage of the battery, if it is detected that the charging voltage of the battery has reached the maximum charging voltage that the battery can withstand, the battery can be controlled to enter the third charging stage and be charged with a smaller charging current, which can reduce the damage caused to the battery by excessive charging voltage.

[0126] In some embodiments, the method further includes:

[0127] If the battery meets the third charging cut-off condition corresponding to the third charging stage, controlling the battery to stop charging.

[0128] Exemplarily, the third charging stage includes a third charging cut-off voltage and a third charging cut-off current. If the charging voltage of the battery in the third charging stage is greater than or equal to the third charging cut-off voltage, and / or the charging current of the battery in the third charging stage is less than or equal to the third charging cut-off current, controlling the battery to stop charging.

[0129] In some embodiments, the third charging cut-off voltage is greater than the second charging cut-off voltage, and the third charging cut-off current is greater than the second charging cut-off current.

[0130] In other embodiments, the third charging cut-off voltage is greater than the second charging cut-off voltage, and the third charging cut-off current is greater than the first charging cut-off current.

[0131] In the embodiments of the present disclosure, when the battery meets the third charging cut-off condition corresponding to the third charging stage, if the battery is still not fully charged, it indicates that the currently set target preset power is unreasonable, or the battery has a fault. Continuing to charge will not only waste the user's time, but also may cause accidents due to long-term charging. Therefore, when the battery meets the charging cut-off condition corresponding to the third charging stage, controlling the battery to stop charging can improve the use safety of the battery.

[0132] In some embodiments, when the battery meets the third charging cut-off condition corresponding to the third charging stage, it is determined whether the power of the battery reaches the target preset power. If the power of the battery is less than the target preset power, a prompt message is sent. The prompt message is used to prompt the user to confirm whether there is an abnormality in the battery.

[0133] In the embodiments of the present disclosure, when the battery meets the third charging cut-off condition corresponding to the third charging stage, if the power of the battery is less than the target preset power, a prompt message is sent to prompt the user to perform an abnormality check on the battery, which can further improve the use safety of the battery.

[0134] In some embodiments, the method further includes:

[0135] If the charging voltage of the battery in the first charging stage is greater than or equal to the first charging cut-off voltage, and the charging current of the battery is less than or equal to the first charging cut-off current, it is determined that the battery meets the first charging cut-off condition corresponding to the first charging stage.

[0136] It can be understood that in the case where the first charging cut-off condition of the battery includes the first charging cut-off current and the first charging cut-off voltage, the charging voltage and charging current of the battery can be obtained every fourth preset time period. If the charging voltage of the battery is greater than or equal to the first charging cut-off voltage, and the charging current of the battery is less than or equal to the first charging cut-off current, it is determined that the battery meets the first charging cut-off condition corresponding to the first charging stage.

[0137] In other embodiments, if the charging voltage of the battery in the first charging stage is greater than or equal to the first charging cut-off voltage, or the charging current of the battery is less than or equal to the first charging cut-off current, it is determined that the battery meets the first charging cut-off condition corresponding to the first charging stage.

[0138] Among them, the magnitude of the fourth preset duration can be set as needed, and the embodiments of the present disclosure do not limit this.

[0139] Exemplarily, the value of the fourth preset duration can be any value from 10 s to 60 s.

[0140] In some embodiments, the difference in the charging voltage of the battery between two adjacent charging sub - stages is the same.

[0141] It can be understood that after the battery enters the second charging stage, in different charging sub - stages, the charging voltage of the battery can be increased sequentially with the same amplitude to shorten the duration for the battery to be charged to the target preset power.

[0142] In some embodiments, the increase amplitude of the charging voltage in different charging sub - stages can be set as needed, and the embodiments of the present disclosure do not limit this.

[0143] Exemplarily, when the battery enters each next charging sub - stage, the charging voltage of the battery can be increased by any value from 5 mV to 10 mV.

[0144] In the following, a specific embodiment is used to introduce the above - provided charging control method.

[0145] Refer to Figure 4 , Figure 4 is a schematic flowchart of a charging control method shown according to another exemplary embodiment. In the following, the charging control method provided by the embodiments of the present disclosure will be introduced in combination with the steps in Figure 4 to introduce the charging control method provided by the embodiments of the present disclosure.

[0146] S401: Obtain the rated capacity Q0 of the battery.

[0147] S402: When the battery meets the first charging cut - off condition corresponding to the first charging stage, obtain the first cycle number of the battery.

[0148] Among them, the first charging cut - off condition includes the first charging cut - off voltage and the first charging cut - off current.

[0149] S403: Determine the target preset power Q1 according to the rated capacity Q0 of the battery and the first cycle number.

[0150] In some embodiments, the target preset power of the battery can be calculated according to the rated capacity and the cycle number through the following formula (1).

[0151] Q1 = a * Q0 (1)

[0152] Wherein, Q1 is the target preset power; Q0 is the rated capacity of the battery; a is a preset coefficient, where a can be determined according to the number of battery cycles. The more the number of cycles, the smaller a is.

[0153] Exemplarily, when the number of cycles is 200 times, a can be any value between 70% and 95%.

[0154] S404: Determine whether the power of the battery reaches the target preset power when the first charging cut-off condition is satisfied. If the first power reaches the target preset power, execute S405; if the first power is lower than the target preset power, execute S406.

[0155] In some embodiments, the second charging stage includes a first sub-charging stage and a second sub-charging stage. The second charging cut-off voltage corresponding to the first sub-charging stage is higher than the first charging cut-off voltage, and the second charging cut-off current corresponding to the first sub-charging stage is greater than the first charging cut-off current. The second charging cut-off voltage corresponding to the second sub-charging stage is higher than the second charging cut-off voltage corresponding to the first sub-charging stage, and the second charging cut-off current corresponding to the second sub-charging stage is greater than the first charging cut-off current.

[0156] In some embodiments, both the first charging stage and the second charging stage of the battery include a constant current stage and a constant voltage stage. Hereinafter, for the convenience of description, the charging voltage when the constant current stage of the first charging stage turns to the constant voltage stage is called the first preset voltage, and the charging current when the constant current stage of the first charging stage turns to the constant voltage stage is called the first preset current; the charging voltage when the constant current stage of the first sub-charging stage turns to the constant voltage stage is called the second preset voltage, and the charging current when the constant current stage of the first sub-charging stage turns to the constant voltage stage is called the second preset current; the charging voltage when the constant current stage of the second sub-charging stage turns to the constant voltage stage is called the third preset voltage, and the charging current when the constant current stage of the second sub-charging stage turns to the constant voltage stage is called the third preset current. The second preset current is less than the first preset current, and the third preset current is less than the second preset current. The second preset voltage is greater than the first preset voltage, and the third preset voltage is greater than the second preset voltage.

[0157] Exemplarily, the second preset voltage is 5 mV to 10 mV higher than the first preset voltage, and the third preset voltage is 5 mV to 10 mV higher than the second preset voltage.

[0158] S405: Enter the second charging stage to continue charging.

[0159] S406: Stop charging.

[0160] S407: Determine whether the second battery power in the second charging stage reaches the target preset power. When the second battery power reaches the target preset power in the second charging stage, execute S406. When the second battery power is lower than the preset power or the charging voltage of the battery reaches the limit voltage threshold, execute S408.

[0161] S408: Enter the third charging stage to continue charging until the battery power reaches the target preset power.

[0162] Among them, the charging current of the battery in the third charging stage is 50% to 80% of the charging current of the battery in the first charging stage.

[0163] In some embodiments, the charging control method provided by the embodiments of the present disclosure is executed by a microcontroller connected to the battery.

[0164] Among them, the microcontroller includes a detection module and a processing module. The detection module is used to detect whether the battery power reaches the target preset power, and the processing module is used to control the charging voltage and charging current of the battery.

[0165] Figure 5 It is a block diagram of a charging control processing device shown according to an exemplary embodiment. As Figure 5 shown, the charging control device 500 mainly includes:

[0166] The first acquisition module 501 is used to acquire the first battery power when the battery meets the first charging cut-off condition corresponding to the first charging stage;

[0167] The control module 502 is used to control the battery to enter the second charging stage to continue charging if the first battery power is lower than the target preset power; among them, the second charging stage includes multiple charging sub-stages, and the charging voltage of the current charging sub-stage in the multiple charging sub-stages is less than the charging voltage of the adjacent next charging sub-stage;

[0168] The stop module 503 is used to stop charging if the battery power reaches the target preset power in any of the charging sub-stages.

[0169] In some embodiments, the device further includes:

[0170] The second acquisition module is used to acquire the second battery power when the battery meets the second charging cut-off condition corresponding to the current charging sub-stage; among them, the second charging cut-off conditions corresponding to each charging sub-stage are different;

[0171] The first entry module is used to enter the next charging sub-stage adjacent to the current charging sub-stage if the second battery power is lower than the target preset power.

[0172] In some embodiments, the second charging cut-off condition includes a second charging cut-off voltage and a second charging cut-off current; the first entry module is configured to:

[0173] Obtain the second charging cut-off voltage and the second charging cut-off current corresponding to the current charging sub-stage;

[0174] If the charging voltage of the battery is greater than or equal to the second charging cut-off voltage corresponding to the current charging sub-stage, and the charging current of the battery is less than or equal to the second charging cut-off current corresponding to the current charging sub-stage, enter the next charging sub-stage adjacent to the current charging sub-stage.

[0175] In some embodiments, the target preset power is: the preset power corresponding to the first cycle number of the battery determined based on a preset mapping relationship when the battery meets the first charging cut-off condition.

[0176] In some embodiments, the device further includes:

[0177] A second entry module, configured to enter the third charging stage if the charging voltage of the battery reaches the limit voltage threshold in any of the charging sub-stages;

[0178] Wherein, the charging current of the battery in the third charging stage is less than the charging current of the battery in the first charging stage.

[0179] In some embodiments, the first charging cut-off condition includes a first charging cut-off voltage and a first charging cut-off current; the device further includes:

[0180] A determination module, configured to determine that the battery meets the first charging cut-off condition corresponding to the first charging stage if the charging voltage of the battery in the first charging stage is greater than or equal to the first charging cut-off voltage, and the charging current of the battery is less than or equal to the first charging cut-off current.

[0181] In some embodiments, the charging voltages of the battery in different charging sub-stages increase sequentially by the same amplitude.

[0182] Regarding the device in the above embodiments, the specific manners in which each module performs operations have been described in detail in the embodiments related to the method, and will not be elaborated herein.

[0183] Figure 6 FIG. 600 is a schematic structural diagram of an electronic device 600 shown according to an exemplary embodiment. For example, the electronic device 600 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, a wearable device, etc.

[0184] Reference Figure 6 , the electronic device 600 may include one or more of the following components: a processing component 602, a memory 604, a power supply component 606, a multimedia component 608, an audio component 610, an input / output (I / O) interface 612, a sensor component 614, and a communication component 616.

[0185] The processing component 602 generally controls the overall operation of the electronic device 600, such as operations associated with display, telephone calls, data communication, camera operations, and recording operations. The processing component 602 may include one or more processors 620 to execute instructions to complete all or part of the steps of the above methods. In addition, the processing component 602 may include one or more modules to facilitate the interaction between the processing component 602 and other components. For example, the processing component 602 may include a multimedia module to facilitate the interaction between the multimedia component 608 and the processing component 602.

[0186] The memory 604 is configured to store various types of data to support the operation of the electronic device 600. Examples of these data include instructions for any application or method operating on the electronic device 600, contact data, phone book data, messages, pictures, videos, etc. The memory 604 may 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, a magnetic disk, or an optical disk.

[0187] The power supply component 606 provides power to various components of the electronic device 600. The power supply component 606 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the electronic device 600.

[0188] The multimedia component 608 includes a screen that provides an output interface between the electronic device 600 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 can be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors can sense not only the boundaries of touch or swipe actions but also detect the duration and pressure associated with the touch or swipe operations. In some embodiments, the multimedia component 608 includes a front camera and / or a rear camera. When the electronic device 600 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each of the front camera and the rear camera can be a fixed optical lens system or have a focal length and optical zoom capabilities.

[0189] The audio component 610 is configured to output and / or input audio signals. For example, the audio component 610 includes a microphone (MIC) that is configured to receive external audio signals when the electronic device 600 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals can be further stored in the memory 604 or transmitted via the communication component 616. In some embodiments, the audio component 610 further includes a speaker for outputting audio signals.

[0190] The I / O interface 612 provides an interface between the processing component 602 and a peripheral interface module, which can be a keyboard, a click wheel, buttons, etc. These buttons can include but are not limited to: a home button, a volume button, a power button, and a lock button.

[0191] The sensor component 614 includes one or more sensors for providing an assessment of various aspects of the state of the electronic device 600. For example, the sensor component 614 can detect the on / off state of the electronic device 600, the relative positioning of components, such as the display and keypad of the electronic device 600. The sensor component 614 can also detect a change in the position of the electronic device 600 or a component of the electronic device 600, the presence or absence of user contact with the electronic device 600, the orientation or acceleration / deceleration of the electronic device 600, and a change in the temperature of the electronic device 600. The sensor component 614 can include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor component 614 can also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor component 614 can further include an acceleration sensor, a gyro sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0192] The communication component 616 is configured to facilitate communication between the electronic device 600 and other devices in a wired or wireless manner. The electronic device 600 can access a communication standard-based wireless network, such as Wi-Fi, 4G, or 5G, or a combination thereof. In an exemplary embodiment, the communication component 616 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 616 further 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, and other technologies.

[0193] In an exemplary embodiment, the electronic device 600 can 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 for performing the above method.

[0194] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions, such as a memory 604 including instructions, is also provided. The above instructions can be executed by a processor 620 of the electronic device 600 to complete the above method. For example, the non-transitory computer-readable storage medium can be a ROM, Random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0195] A non-transitory computer-readable storage medium, when the instructions in the storage medium are executed by a processor of a wearable device, enables the computer to execute the charging control method described in one or more of the foregoing technical solutions.

[0196] When the processor executes the instructions, it can at least perform the following steps:

[0197] When the battery meets the first charging cut-off condition corresponding to the first charging stage, obtain the first battery power;

[0198] If the first battery power is lower than the target preset power, control the battery to enter the second charging stage for continued charging; wherein, the second charging stage includes multiple charging sub-stages, and the charging voltage of the current charging sub-stage in the multiple charging sub-stages is less than the charging voltage of the adjacent next charging sub-stage;

[0199] If the battery power reaches the target preset power in any of the charging sub-stages, stop charging.

[0200] In some embodiments, the method further includes:

[0201] When the battery meets the second charging cut-off condition corresponding to the current charging sub-stage, obtain the second battery power.

[0202] If the second battery power is lower than the target preset power, enter the next charging sub-stage adjacent to the current charging sub-stage.

[0203] Wherein, the second charging cut-off conditions corresponding to each of the charging sub-stages are different.

[0204] In some embodiments, the second charging cut-off condition includes a second charging cut-off voltage and a second charging cut-off current; the step of if the second battery power is lower than the target preset power and entering the next charging sub-stage adjacent to the current charging sub-stage includes:

[0205] Obtain the second charging cut-off voltage and the second charging cut-off current corresponding to the current charging sub-stage.

[0206] If the charging voltage of the battery is greater than or equal to the second charging cut-off voltage corresponding to the current charging sub-stage, and the charging current of the battery is less than or equal to the second charging cut-off current corresponding to the current charging sub-stage, enter the next charging sub-stage adjacent to the current charging sub-stage.

[0207] In some embodiments, the target preset power is: the preset power corresponding to the first cycle number of the battery determined based on a preset mapping relationship when the battery meets the first charging cut-off condition.

[0208] In some embodiments, the method further includes:

[0209] If the charging voltage of the battery reaches the limit voltage threshold in any of the charging sub-stages, enter the third charging stage.

[0210] Wherein, the charging current of the battery in the third charging stage is less than the charging current of the battery in the first charging stage.

[0211] In some embodiments, the first charging cut-off condition includes a first charging cut-off voltage and a first charging cut-off current; the method further includes:

[0212] If the charging voltage of the battery in the first charging stage is greater than or equal to the first charging cut-off voltage, and the charging current of the battery is less than or equal to the first charging cut-off current, determine that the battery meets the first charging cut-off condition corresponding to the first charging stage.

[0213] In some embodiments, the difference in the charging voltage of the battery between two adjacent charging sub-stages is the same.

[0214] Other embodiments of the present disclosure will be readily apparent to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. The present disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include known common general knowledge or conventional technical means in the technical field not disclosed herein. The specification and examples are only illustrative, and the true scope and spirit of the present disclosure are pointed out by the following claims.

[0215] It should be understood that the present disclosure is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A charging control method, characterized in that, Including: When the battery meets the first charging cut-off condition corresponding to the first charging stage, obtaining the first battery power; If the first battery power is lower than the target preset power, entering the second charging stage to continue charging; wherein, the second charging stage includes a plurality of charging sub-stages, and the charging voltage of the current charging sub-stage in the plurality of charging sub-stages is less than the charging voltage of the adjacent next charging sub-stage; If the battery power reaches the target preset power in any of the charging sub-stages, stop charging.

2. The method according to claim 1, wherein The method further includes: When the battery meets the second charging cut-off condition corresponding to the current charging sub-stage, obtaining the second battery power; wherein, the second charging cut-off conditions corresponding to each of the charging sub-stages are different; If the second battery power is lower than the target preset power, entering the next charging sub-stage adjacent to the current charging sub-stage.

3. The method according to claim 2, wherein The second charging cut-off condition includes a second charging cut-off voltage and a second charging cut-off current; the step of obtaining the second battery power when the battery meets the second charging cut-off condition corresponding to the current charging sub-stage includes: Obtaining the second charging cut-off voltage and the second charging cut-off current corresponding to the current charging sub-stage; If the charging voltage of the battery is greater than or equal to the second charging cut-off voltage corresponding to the current charging sub-stage, and the charging current of the battery is less than or equal to the second charging cut-off current corresponding to the current charging sub-stage, obtaining the second battery power.

4. The method according to any one of claims 1 to 3, characterized in that The target preset power is: the preset power corresponding to the first cycle number of the battery determined based on a preset mapping relationship when the battery meets the first charging cut-off condition.

5. The method according to any one of claims 1 to 3, characterized in that, The method further includes: If the charging voltage of the battery reaches the limit voltage threshold in any of the charging sub-stages, entering the third charging stage; Wherein, the charging current of the battery in the third charging stage is less than the charging current of the battery in the first charging stage.

6. The method according to any one of claims 1 to 3, characterized in that The first charging cut-off condition includes a first charging cut-off voltage and a first charging cut-off current; the method further includes: If the charging voltage of the battery is greater than or equal to the first charging cut-off voltage in the first charging stage, and the charging current of the battery is less than or equal to the first charging cut-off current, determining that the battery meets the first charging cut-off condition corresponding to the first charging stage.

7. The method according to any one of claims 1 to 3, wherein The difference in the charging voltages of the battery in two adjacent charging sub-stages is the same.

8. A charging control device, characterized in that, Including: A first obtaining module, configured to obtain the first battery power when the battery meets the first charging cut-off condition corresponding to the first charging stage; A control module, configured to control the battery to enter the second charging stage to continue charging if the first battery power is lower than the target preset power; wherein, the second charging stage includes a plurality of charging sub-stages, and the charging voltage of the current charging sub-stage in the plurality of charging sub-stages is less than the charging voltage of the adjacent next charging sub-stage; A stop module, configured to stop charging if the battery reaches the target preset power during any of the charging sub-stages.

9. An electronic device, characterized in that, Comprising: A memory for storing processor-executable instructions; A processor, connected to the memory; Wherein, the processor is configured to execute the charging control method according to any one of claims 1 to 7.

10. A non-transitory computer-readable storage medium, when the instructions in the storage medium are executed by a processor, implementing the charging control method according to any one of claims 1 to 7 above.

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