CN112349982A - Battery, charging method and charging device - Google Patents

Abstract

The present disclosure discloses a battery, a charging method and a charging device, belonging to the technical field of batteries. The method includes: controlling the charging circuit to be turned on by a control unit, and charging the battery with a first current value by the charging circuit; when the voltage of the battery reaches a first predetermined voltage value, alternately controlling the charging circuit. The charging circuit and the discharging circuit are turned on and off; when the discharging circuit is turned on but the charging circuit is off, the battery is discharged through the discharging circuit; when the charging circuit is turned on, the battery is discharged. When the discharge circuit is turned off, the battery is charged by the charging circuit. By alternately controlling the conduction and disconnection of the charging circuit and the discharging circuit to realize discharging while charging, the problem of shortening the service life of the battery caused by the charging method in the related art during long-term high-current charging is solved. Extend battery life.

Description

Battery, charging method and charging device

technical field

The present disclosure relates to the technical field of batteries, and in particular, to a battery, a charging method and a charging device.

Background technique

Nowadays, people have higher and higher requirements for the charging speed of electronic devices, and faster charging speed requires larger charging current, and larger charging current requires higher energy density of batteries of electronic devices, which also means Battery life is shorter. For users of electronic devices, battery life is a very important consideration in electronic devices.

SUMMARY OF THE INVENTION

The embodiments of the present disclosure provide a battery, a charging method, and a charging device, which can solve the problem of shortening the service life of the battery when the charging method in the related art performs high-current charging. The technical solution is as follows:

According to an aspect of the embodiments of the present disclosure, a battery is provided, the battery includes: a battery cell, a charging circuit, a discharging circuit, and a control unit;

The control unit is electrically connected to the charging circuit and the discharging circuit respectively;

The charging circuit is electrically connected to the positive electrode of the battery cell, one end of the discharge circuit is electrically connected to the positive electrode of the battery core, and the other end of the discharging circuit is electrically connected to the negative electrode of the battery core;

the control unit, configured to control the charging circuit to be turned on or the discharge circuit to be turned on;

The charging circuit is used to charge the battery cell when it is turned on;

The discharge circuit is used to discharge the battery cell when it is turned on.

In the embodiment of the present disclosure, by adding a discharge circuit in the battery, the discharge circuit and the charging circuit can realize the effect of discharging the battery cell while charging, which solves the problem that when the charging method in the related art performs long-term high-current charging, The problem of shortening the service life of the battery can be extended, and the service life of the battery can be extended.

In a possible implementation manner, the discharge circuit includes: a first switch and a resistor;

One end of the first switch is electrically connected to the positive pole of the cell, the other end of the first switch is electrically connected to one end of the resistor, and the other end of the resistor is electrically connected to the negative pole of the cell. sexual connection;

the first switch is electrically connected to the control unit;

the control unit, configured to control the closing of the first switch;

The first switch is used to turn on the discharge circuit when closed.

In an embodiment of the present disclosure, the discharge circuit includes a first switch and a resistor, thereby realizing adding a discharge circuit to the battery at a lower cost. The design of this discharge circuit has lower cost.

In another possible implementation manner, the battery further includes: a second switch;

One end of the second switch is electrically connected to the positive electrode of the battery cell, and the other end of the second switch is connected to the control unit and the charging circuit respectively;

the control unit, configured to control the closing of the second switch;

The second switch is used to turn on the charging circuit when closed.

In the embodiment of the present disclosure, the discharging circuit includes a second switch, and the control unit can control the conduction and closing of the charging circuit through the second switch, so as to realize the efficient and convenient control of the charging circuit by the control unit.

According to another aspect of the embodiments of the present disclosure, an electronic device is provided, the electronic device includes a housing, a processor, a display screen module, and a battery in any of the above possible implementations;

The battery and the processor are arranged in the casing, and the processor is electrically connected to the battery;

the display screen module is arranged on the casing;

The processor is configured to control the battery to supply power to the display screen module.

In the embodiment of the present disclosure, by electrically connecting the processor and the battery in the electronic device, it is realized that when charging the electronic device, the processor can control the charging of the battery, and the processor controls the battery to charge the battery with various charging algorithms, It can achieve fast, efficient and safe charging.

According to another aspect of the embodiments of the present disclosure, a charging method is provided, the charging method is used for charging the battery in any of the above possible implementation manners, and the method includes:

The charging circuit is controlled to be turned on by the control unit, and the battery is charged with a first current value by the charging circuit;

When the voltage of the battery reaches a first predetermined voltage value, alternately control the on and off of the charging circuit and the discharging circuit;

When the discharge circuit is turned on but the charging circuit is turned off, the battery is discharged through the discharge circuit;

When the charging circuit is turned on but the discharging circuit is turned off, the battery is charged by the charging circuit.

In the embodiment of the present disclosure, the charging circuit is controlled to be turned on by a control unit, and the battery is charged with a first current value by the charging circuit; when the voltage of the battery reaches a first predetermined voltage value, the battery is alternately Control the on and off of the charging circuit and the discharging circuit; when the discharging circuit is on but the charging circuit is off, the battery is discharged through the discharging circuit; When the circuit is turned on, but the discharge circuit is turned off, the battery is charged by the charging circuit. By alternately controlling the conduction and disconnection of the charging circuit and the discharging circuit, the charging and discharging are realized, which solves the problem of shortening the service life of the battery when the charging method in the related art performs long-term high-current charging. Extend battery life.

In a possible implementation manner, when the voltage of the battery reaches a first predetermined voltage value, the switching on and off of the charging circuit and the discharging circuit are alternately controlled, including:

When the voltage of the battery reaches the first predetermined voltage value and the number of discharges does not reach the first predetermined number of times, the charging circuit and the discharging circuit are alternately controlled to be turned on and off.

In the embodiment of the present disclosure, the number of discharges is also set. When the number of discharges does not reach the first predetermined number of times, the battery is discharged while being charged, so that the battery can be charged for a while, discharged for a while while being charged, and then discharged again. Charge for a while to further reduce damage to the battery and delay the service life of the battery.

In another possible implementation, the method further includes:

When the voltage of the battery reaches the first predetermined voltage value, but the number of times of discharge reaches the first predetermined number of times, continue to charge the battery with the first current value through the charging circuit;

When the voltage of the voltage reaches a second predetermined voltage value, the charging circuit is controlled to charge the battery with the second predetermined voltage value, and the second predetermined voltage value is greater than the first predetermined voltage value.

In the embodiment of the present disclosure, when the number of discharges reaches the first predetermined number of times, the constant voltage charging stage is entered, and the battery is charged with the second predetermined voltage value, thereby improving the charging efficiency.

In another possible implementation manner, the charging the battery through the charging circuit includes:

obtaining the current first battery information of the battery, and determining a second current value matching the first battery information according to the first battery information;

By the charging circuit, the battery is charged with the second current value, and the second current value is smaller than the first current value.

In the embodiment of the present disclosure, according to the current first battery information of the battery, the second current value matching the first battery information is determined, so that the determined second current value is more accurate, further reduces damage to the battery, and delays the battery life. service life.

In another possible implementation, the method further includes:

When the charging of the battery starts this time, the step of controlling the charging circuit to be turned on by the control unit, and charging the battery with the first current value by the charging circuit is performed; or,

When the current cumulative discharge duration of discharging the battery through the discharge circuit reaches a first predetermined duration, the control unit to control the discharge circuit to turn off and the charging circuit to turn on are executed, and the the step of charging the battery with the first current value by the charging circuit.

In the embodiment of the present disclosure, the battery is charged at the beginning of charging; or the battery is charged again when the accumulated discharge duration reaches the first predetermined duration, so that the battery can be charged for a while, while charging Put it for a while, and then charge it for a while to further reduce the damage to the battery and prolong the service life of the battery.

In another possible implementation, the method further includes:

When the battery is charged this time, when the charging circuit is controlled to be turned on for the first time, the configuration information of the battery is acquired, and the first current value matching the configuration information is determined according to the configuration information ;

When the battery is charged this time, the current second battery information of the battery is obtained when the charging circuit is not controlled to be turned on for the first time, and according to the second battery information, it is determined that it matches the second battery information of the first current value.

In the embodiment of the present disclosure, when the battery is charged this time, when the charging circuit is controlled to be turned on for the first time, the first current value is determined according to the configuration information, and the determined first current value is generally a large current, so that the large current is passed through. The battery is charged and the charging efficiency is improved.

When the charging circuit is not turned on for the first time, the first current value is determined according to the current second battery information, so that the determined second current value is more accurate, which further reduces damage to the battery and prolongs the service life of the battery.

In another possible implementation, the method further includes:

When the current value of the battery decreases to a third current value, the charging circuit is controlled to charge the battery with the first predetermined voltage value, and the third current value is smaller than the second current value;

When the current value of the battery decreases to a fourth current value, the charging circuit is controlled to be turned off, and the fourth current value is smaller than the third current value.

In the embodiment of the present disclosure, in the constant voltage charging stage, when the current value is reduced to a third current value, the charging circuit is controlled to charge the battery with a first predetermined voltage value, and the first predetermined voltage value is not greater than the second predetermined voltage value , so as to reduce the voltage value for charging, further reduce the damage to the battery, and delay the service life of the battery. When the current value drops to the fourth current value, it means that the battery is fully charged. At this time, the charging circuit is controlled to be disconnected and the charging is ended.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present disclosure more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

FIG. 1 is a schematic diagram of an implementation environment provided by an embodiment of the present disclosure;

FIG. 2 is a schematic structural diagram of an electronic device provided by an embodiment of the present disclosure

3 is a schematic structural diagram of a battery provided by an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of a discharge circuit provided by an embodiment of the present disclosure.

FIG. 5 is a schematic diagram of a connection relationship of a second switch provided by an embodiment of the present disclosure.

FIG. 6 is a flowchart of a charging method provided according to an exemplary embodiment.

FIG. 7 is a flowchart of a charging method provided according to an exemplary embodiment.

FIG. 8 is a flowchart of a charging method provided according to an exemplary embodiment.

The reference numerals denote:

1-Electronic equipment, 2-Charger, 10-Housing, 11-Processor, 12-Display screen module, 13-Battery, 130-Cell, 131-Charging circuit, 132-Discharging circuit, 133-Control unit, S2-second switch, S1-first switch, 1311-resistor.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present disclosure clearer, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of an implementation environment provided by an embodiment of the present disclosure. Referring to FIG. 1 , the implementation environment includes an electronic device 1 and a charger 2 ; the charger 2 is connected to the electronic device 1 for charging the electronic device 1 . The charger 2 can be wired or wirelessly connected to the electronic device 1 , so as to realize wired charging or wireless charging of the electronic device 1 .

Wherein, the electronic device 1 may be a mobile phone, a tablet computer, an electric shaver, a power bank, an electric bicycle, or an electric car.

Referring to FIG. 2 , the electronic device 1 includes a casing 10 , a processor 11 , a display screen module 12 and a battery 13 , the battery 13 and the processor 11 are arranged in the casing 10 , and the processor 11 is electrically connected to the battery 13 ;

The display screen module 12 is arranged on the casing 10, the battery 13 is electrically connected with the display screen module 12, and the battery 13 is used to supply power to the display screen module 12;

The processor 11 is used to control the battery 13 to supply power to the display screen module 12 .

The processor 11 may be a CPU (Central Processing Unit, central processing unit 11 ); the electronic device 1 may be a framed electronic device 1 , a full-screen electronic device 1 , a multi-screen electronic device 1 or a folding-screen electronic device 1 . When the electronic device 1 is a framed electronic device 1 or a full-screen electronic device 1 , the display screen module 12 is disposed on the upper surface of the casing 10 . When the electronic device 1 is a multi-screen electronic device 1 , the display screen module 12 includes multiple display screens, and the multiple display screens are arranged on multiple surfaces of the casing 10 . For example, the display screen module 12 includes two display screens, one display screen is disposed on the front surface of the casing 10 , and the other display screen is disposed on the other front surface or side surface of the casing 10 .

When the electronic device 1 is a folding screen electronic device 1 , the casing 10 includes a first casing 10 and a second casing 10 . The first casing 10 and the second casing 10 are connected by a rotating shaft; the display screen module 12 is arranged on the same side of the first casing 10 , the second casing 10 and the rotating shaft.

3, the battery 13 includes: a battery cell 130, a charging circuit 131, a discharging circuit 132, and a control unit 133; the control unit 133 is electrically connected to the charging circuit 131 and the discharging circuit 132, respectively;

One end of the charging circuit 131 is electrically connected to the charger 2 , the other end is electrically connected to the positive electrode of the battery cell 130 , one end of the discharging circuit 132 is electrically connected to the positive electrode of the battery cell 130 , and the other end is electrically connected to the negative electrode of the battery cell 130 . Connect, the negative pole of the cell is grounded;

The control unit 133 is used to control the conduction of the charging circuit 131 or the conduction of the discharging circuit 132;

The charging circuit 131 is used to charge the battery cell 130 when it is turned on;

The discharge circuit 132 is used to discharge the battery cell 130 when it is turned on.

In a possible implementation manner, the other end of the control unit 133 is electrically connected to the processor 11 in the electronic device 1 . The processor 11 is configured to send a control signal to the control unit 133 . The control unit 133 is further configured to receive the control signal, and control the charging circuit 131 to be turned on or the discharge circuit 132 to be turned on according to the control signal.

For example, when the battery cell 130 needs to be charged, the processor 11 is used to send the first control signal to the control unit 133; the control unit 133 is used to receive the first control signal, and control the charging circuit 131 according to the first control signal on.

For another example, when the battery cell 130 needs to be discharged, the processor 11 is used to send the second control signal to the control unit 133; the control unit 133 is used to receive the second control signal, and according to the second control signal, alternately control the The charging circuit 131 and the discharging circuit 132 are turned on and off. When the discharge circuit 132 is turned on but the charging circuit 131 is turned off, the discharge circuit 132 is used to discharge the battery cell 130 . When the charging circuit 131 is turned on but the discharging circuit 132 is turned off, the charging circuit 131 is used to charge the battery cells 130 .

In another possible implementation manner, the processor 11 is further configured to control the turn-on times of the charging circuit 131 or the discharging circuit 132 through the control unit 133 .

In another possible implementation manner, the other end of the processor 11 is also electrically connected to the battery cell 130 for detecting the information of the battery 13 of the battery cell 130, and according to the information of the battery 13, it is determined that the charging circuit 131 charges the battery cell 130 Current value for charging. Correspondingly, the first control signal also carries the current value. Wherein, both the first control signal and the second control signal may be level signals.

The control unit 133 may be an MCU (Microcontroller Unit, micro control unit 133 ). The battery 13 may be a high-voltage battery 13 or an ordinary battery 13 . In the embodiment of the present disclosure, the battery 13 is the high-voltage battery 13 as an example for description. In addition, the material of the battery 13 may be lithium ion, nickel-cadmium, nickel-hydrogen, lead storage, or other materials.

In the embodiment of the present disclosure, by adding a discharge circuit in the battery, the discharge circuit and the charging circuit can realize the effect of discharging the battery cell while charging, which solves the problem that when the charging method in the related art performs long-term high-current charging, The problem of shortening the service life of the battery can be extended, and the service life of the battery can be extended.

4, the discharge circuit 132 includes a first switch S1 and a resistor 1311; one end of the first switch S1 is electrically connected to the positive electrode of the battery cell 130, the other end of the first switch S1 is electrically connected to one end of the resistor 1311, and the resistor 1311 The other end of the battery is electrically connected to the negative electrode of the battery cell 130;

The first switch S1 is electrically connected to the control unit 133;

a control unit 133, for controlling the first switch S1 to be closed;

The first switch S1 is used to turn on the discharge circuit 132 when it is closed.

Wherein, the control unit 133 may be a single chip microcomputer. The first switch S1 may be a MOS transistor.

In an embodiment of the present disclosure, the discharge circuit includes a first switch and a resistor, thereby realizing adding a discharge circuit to the battery at a lower cost. The design of this discharge circuit has lower cost.

Referring to FIG. 5 , the battery 13 further includes: a second switch S2;

One end of the second switch S2 is electrically connected to the positive electrode of the battery cell 130, and the other end of the second switch S2 is connected to the control unit 133 and the charging circuit 131 respectively;

a control unit 133 for controlling the second switch S2 to be closed;

The second switch S2 is used to turn on the charging circuit 131 when it is closed.

Wherein, the second switch S2 may also be a MOS transistor.

In the embodiment of the present disclosure, the discharging circuit includes a second switch, and the control unit can control the conduction and closing of the charging circuit through the second switch, so as to realize the efficient and convenient control of the charging circuit by the control unit.

FIG. 6 is a flowchart of a charging method according to an exemplary embodiment. As shown in FIG. 6 , the charging method is applied in an electronic device or a processor of the electronic device; in the embodiments of the present disclosure, the application of the charging method in a processor is taken as an example for description. Include the following steps:

In step S601, the charging circuit is controlled to be turned on, and the battery is charged with a first current value through the charging circuit.

In step S602, when the voltage of the battery reaches the first predetermined voltage value, the charging circuit and the discharging circuit are alternately controlled to be turned on and off.

In step S603, when the discharge circuit is turned on but the charging circuit is turned off, the battery is discharged through the discharge circuit.

In step S604, when the charging circuit is turned on but the discharging circuit is turned off, the battery is charged by the charging circuit.

In a possible implementation manner, when the voltage of the battery reaches a first predetermined voltage value, alternately controlling the on and off of the charging circuit and the discharging circuit, including:

When the voltage of the battery reaches the first predetermined voltage value and the number of times of discharge does not reach the first predetermined number of times, the on and off of the charging circuit and the discharging circuit are alternately controlled.

In another possible implementation, the method further includes:

When the voltage of the battery reaches the first predetermined voltage value, but the number of discharges reaches the first predetermined number of times, continue to charge the battery with the first current value through the charging circuit;

When the voltage of the voltage reaches the second predetermined voltage value, the charging circuit is controlled to charge the battery with the second predetermined voltage value, and the second predetermined voltage value is greater than the first predetermined voltage value.

In another possible implementation manner, the battery is charged through a charging circuit, including:

obtaining the current first battery information of the battery, and determining a second current value matching the first battery information according to the first battery information;

Through the charging circuit, the battery is charged with a second current value, and the second current value is smaller than the first current value.

In another possible implementation, the method further includes:

When the charging of the battery starts this time, the control unit controls the charging circuit to be turned on, and the charging circuit is used to charge the battery with the first current value; or,

When the current cumulative discharge duration of discharging the battery through the discharge circuit reaches the first predetermined duration, the control unit controls the discharge circuit to be turned off and the charging circuit to be turned on, and the battery is charged with the first current value by the charging circuit. step.

In another possible implementation, the method further includes:

When the battery is charged this time, when the charging circuit is controlled to be turned on for the first time, the configuration information of the battery is obtained, and according to the configuration information, a first current value matching the configuration information is determined;

When the battery is charged this time, the current second battery information of the battery is obtained when the charging circuit is not turned on for the first time, and the first current value matching the second battery information is determined according to the second battery information.

In another possible implementation, the method further includes:

When the current value of the battery decreases to a third current value, the charging circuit is controlled to charge the battery with a first predetermined voltage value, and the third current value is smaller than the second current value;

When the current value of the battery decreases to a fourth current value, the charging circuit is controlled to be disconnected, and the fourth current value is smaller than the third current value.

In the embodiment of the present disclosure, the charging circuit is controlled to be turned on by the control unit, and the battery is charged with the first current value by the charging circuit; when the voltage of the battery reaches the first predetermined voltage value, the conduction of the charging circuit and the discharging circuit are alternately controlled. On and off; when the discharging circuit is on but the charging circuit is off, the battery is discharged through the discharging circuit; when the charging circuit is on but the discharging circuit is off, the battery is charged by the charging circuit. By alternately controlling the conduction and disconnection of the charging circuit and the discharging circuit, the charging and discharging are realized, which solves the problem of shortening the service life of the battery when the charging method in the related art performs long-term high-current charging, and can prolong the use of the battery. life.

All the above-mentioned optional technical solutions can be combined arbitrarily to form optional embodiments of the present disclosure, which will not be repeated here.

In the embodiment of the present disclosure, a discharge circuit is added to the battery; when charging the battery, the battery is charged at a constant current and then at a constant voltage. Moreover, in the constant current charging stage, the battery is charged first, and when the voltage value of the battery reaches the first preset voltage value, the on and off of the discharge circuit and the charging circuit are alternately controlled, so as to realize the side charging of the battery side discharge. When the discharge time reaches a certain time, the discharge circuit is disconnected and the battery continues to be charged. When the voltage of the battery reaches the first predetermined voltage value again, the on and off of the discharge circuit and the charging circuit are alternately controlled again, so as to realize the The battery is charged and discharged, and so on, until the number of discharges reaches a certain number of times and the voltage of the battery reaches the second predetermined voltage value, the constant voltage charging stage is performed; in the constant voltage charging stage, the battery is charged with a certain voltage value. to charge.

FIG. 7 is a flowchart of a charging method according to an exemplary embodiment. As shown in FIG. 7 , the charging method is applied in an electronic device or a processor of an electronic device; in the embodiments of the present disclosure, the charging method is applied in a processor as an example for description. Include the following steps:

In step S701, the processor controls the charging circuit to be turned on through the control unit, and charges the battery with the first current value through the charging circuit.

Among them, the processor controls the charging circuit to be turned on through the control unit, there are two cases,

First, at the very beginning of the charging process, the processor controls the charging circuit to be turned on for the first time through the control unit. Correspondingly, when the charging of the battery starts this time, the processor controls the charging circuit to be turned on through the control unit.

The processor sends a first control signal to the control unit; the control unit receives the first control signal, and turns on the charging circuit according to the first control signal. Wherein, the control unit turns on the charging circuit by turning on the second switch.

It should be noted that when the control unit turns on the second switch, the first switch is in an off state; thus, the battery is charged through the charging circuit.

Second, during the charging process, after the processor controls the discharge circuit to be disconnected through the control unit, the processor controls the charging circuit to turn on again through the control unit. Correspondingly, when the current cumulative discharge duration for discharging the battery by the processor through the discharging circuit reaches the first predetermined duration, the processor controls the discharging circuit to be turned off and the charging circuit to be turned on.

Wherein, the accumulated discharge duration this time is the duration during which the processor alternately controls the conduction and disconnection of the charging circuit and the discharging circuit. In addition, after the processor controls the charging circuit to be turned on by any one of the two methods, the processor charges the battery with the first current value through the charging circuit.

For both cases, there are two ways to determine the first current value:

For the first case, the processor may determine the first current value according to the first configuration information of the battery. Correspondingly, the step of determining the first current value by the processor may be:

When charging the battery this time, the processor obtains the first configuration information of the battery when it controls the charging circuit to be turned on for the first time, and determines a first current value matching the first configuration information according to the first configuration information.

The first configuration information of the battery includes the maximum charging current value of the battery, and the processor uses the maximum charging current value as the first current value; or, the processor makes a difference between the maximum charging current value and the first predetermined current value, and the difference value as the first current value. Wherein, the first current value may be a large current greater than 1A. For example, the first current value may be 10A, 11A, or 12A, or the like.

In the embodiment of the present disclosure, the processor controls the charging circuit to be turned on through the control unit, and charges the battery with the first current value through the charging circuit. The current close to the maximum charging current value charges the battery, which speeds up the charging speed and improves the charging efficiency under the condition of ensuring the safety of charging.

For the second case, the processor may determine the first current value according to the current second battery information of the battery. Correspondingly, the step of determining the first current value by the processor may be:

When charging the battery this time, the processor obtains the current second battery information of the battery when it is not the first time that the processor controls the charging circuit to be turned on, and determines the first current value matching the second battery information according to the second battery information.

Wherein, the second battery information includes the current first power value of the battery; the processor stores the corresponding relationship between the power value and the current value. Correspondingly, the step of determining the first current value matching the second battery information by the processor according to the second battery information may be as follows: according to the current first power value of the battery, the processor determines from the corresponding relationship between the current value and the current value, A first current value corresponding to the current first power value is determined.

For example, the number of discharges is 2; when the battery is discharged for the first time, and the battery is charged again, the first current value can be 8A; when the battery is discharged for the second time, when the battery is charged again, The first current value may be 6A.

In the embodiment of the present disclosure, when the processor does not control the charging circuit to be turned on for the first time, the processor determines a first current value matching the current power value according to the current power value of the battery, and charges the battery with the first current value. Make sure the battery is not overcharged, thus protecting the battery and extending the battery life.

In step S702, the processor determines whether the battery voltage value reaches a first predetermined voltage value, and determines whether the number of times of discharge reaches a first predetermined number of times.

The first predetermined voltage value is determined by the processor according to second configuration information of the battery, and the second configuration information includes a charge cut-off voltage value of the battery; correspondingly, the step of the processor determining the first predetermined voltage value may be: processing The controller takes the sum of the charge cut-off voltage value and the third predetermined voltage value as the first predetermined voltage value. For example, if the charge cut-off voltage is 4.35V, and the third predetermined voltage value is 0.05V, the first predetermined voltage value is 4.4V.

The first predetermined number of times is a predetermined number of discharge times. The first predetermined number of times is determined by the processor according to third configuration information of the battery, and the third configuration information includes the electric capacity of the battery; and the processor stores the corresponding relationship between the electric capacity and the predetermined times. Correspondingly, the step of the processor determining the first predetermined number of times may be: the processor determines the first predetermined number of times corresponding to the electrical capacity from the corresponding relationship between the electrical capacity and the predetermined number of times according to the electrical capacity of the battery. For example, the first predetermined number of times is 2 times.

It should be noted that the processor determines whether the voltage value of the battery reaches the first predetermined voltage value by continuously detecting the voltage value of the battery, and when the voltage value of the battery reaches the first predetermined voltage value, determines whether the number of discharges reaches the first predetermined voltage value. When the number of discharges reaches the first predetermined number of times, step S703 is performed; when the number of discharges does not reach the first predetermined number of times, step S706 is performed.

In step S703, when the voltage value reaches the first predetermined voltage value but the number of times of discharge does not reach the first predetermined number of times, the processor alternately controls the turn-on and turn-off of the charging circuit and the discharging circuit.

Among them, the way that the processor alternately controls the conduction and disconnection of the charging circuit and the discharging circuit is as follows:

The processor controls the discharge circuit to be turned on and the charging circuit to be turned off through the control unit; and then controls the discharge circuit to be turned off and the charging circuit to be turned on. The step that the processor controls the conduction of the discharge circuit and the disconnection of the charging circuit through the control unit may be as follows: the processor controls the closing of the first switch and the opening of the second switch through the control unit to control the conduction of the discharging circuit and the opening of the charging circuit of disconnection. The step that the processor controls the disconnection of the discharge circuit and the conduction of the charging circuit may be as follows: the processor controls the disconnection of the first switch and the conduction of the second switch through the control unit to control the disconnection of the discharge circuit and the conduction of the charging circuit .

The control period during which the processor alternately controls the on and off of the charging circuit and the discharging circuit is in milliseconds, for example, the control period may be 1 millisecond; then the processor controls the discharging circuit to turn on for 1 millisecond, and then controls the charging circuit to turn on 1 millisecond, and then control the discharge circuit to conduct for 1 millisecond, and so on.

In the embodiment of the present disclosure, when the voltage value reaches the first predetermined voltage value but the number of discharges does not reach the first predetermined number of times, the processor alternately controls the turn-on and turn-off of the charging circuit and the discharging circuit. The processor alternately controls the conduction and disconnection of the charging circuit and the discharging circuit, and the cycle of the alternating conduction reaches the millisecond level, which can realize the effect of discharging while charging, and avoid the absorption of positive and negative electrodes during the long-term charging process of the battery. And the expansion and contraction of itself when the ions in the electrolyte are released, resulting in battery loss. By alternately conducting the discharging circuit and the charging circuit, it is avoided that the ions only move in one direction during the long-term charging process of the battery, thereby accelerating the expansion and contraction of the ions themselves, causing the battery to be unsustainable. By alternately conducting the discharging circuit and the charging circuit, the battery can be protected and the service life of the battery can be prolonged.

It should be noted that the control period can also be adjusted as required, which is not specifically limited in the embodiment of the present disclosure; for example, the control period can also be in the second level.

Another point to be noted is that after the processor alternately controls the turn-on and turn-off of the charging circuit and the discharging circuit, the processor also detects the current accumulated discharge duration, and executes step S701 when the discharge duration reaches the first predetermined duration.

The first predetermined duration can be set and changed as required; and the first predetermined duration is determined by the processor according to the current number of discharges. In addition, the processor stores the corresponding relationship between the number of discharges and the predetermined duration. Correspondingly, the step of the processor determining the first predetermined duration may be: the processor determines the first predetermined duration corresponding to the discharging number from the corresponding relationship between the discharging number and the predetermined duration according to the current discharging number.

For example, if the current number of discharges is the first time, the processor determines that the first predetermined duration is 3 minutes; if the current number of discharges is the second time, the processor determines that the first predetermined duration is 2 minutes.

Another point to be noted is that when the discharging circuit is on but the charging circuit is off, step S704 is performed; when the charging circuit is on but the discharging circuit is off, step S705 is performed. In addition, step S704 and step S705 are alternately performed, and step S701 is performed until the accumulated discharge duration reaches the first predetermined duration.

In step S704, when the discharge circuit is turned on but the charging circuit is turned off, the processor discharges the battery through the discharge circuit.

In the process of alternately conducting the charging circuit and the discharging circuit, whenever the discharging circuit is conducting and the charging circuit is disconnecting, the processor discharges the battery through the discharging circuit.

In the embodiment of the present disclosure, when the discharging circuit is turned on but the charging circuit is disconnected, the processor discharges the battery through the discharging circuit, and discharges the battery through the discharging circuit, so as to avoid that the ions only move toward the battery during the long-term charging process. It moves in one direction, thereby accelerating the expansion and contraction of the ions themselves, making the battery less durable. Discharging the battery through the discharge circuit can protect the battery and prolong the service life of the battery.

In step S705, when the charging circuit is turned on but the discharging circuit is turned off, the processor charges the battery through the charging circuit.

In the process that the charging circuit and the discharging circuit are turned on alternately, whenever the charging circuit is turned on and the discharging circuit is turned off, the processor charges the battery through the charging circuit. The steps of charging the battery by the processor through the charging circuit may be as follows:

The processor charges the battery with a second current value through the charging circuit, and the second current value is smaller than the first current value.

The processor may determine the second current value according to the first current value, and the process may be: the processor uses the difference between the first current value and the second predetermined current value as the second current value. The processor can also determine the second current value according to the current first battery information of the battery, and this process can obtain the current first battery information of the battery for the processor, and determine the second current value matching the first battery information according to the first battery information. current value.

The first battery information includes the current second power value of the battery, and the processor stores the corresponding relationship between the power value and the current value. Correspondingly, the step of determining the second current value matching the first battery information by the processor according to the first battery information may be as follows: according to the current second power value of the battery, the processor selects from the corresponding relationship between the current value and the current value, A second current value corresponding to the current second power value is determined.

In the embodiment of the present disclosure, in the process of alternately conducting the charging circuit and the discharging circuit, when the charging circuit is on but the discharging circuit is off, the processor charges the battery through the charging circuit, which can save charging time and improve charging efficiency . The processor obtains the current first battery information of the battery, determines a second current value matching the first battery information according to the first battery information, charges the battery with the second current value, and charges the battery with the current value matching the battery information. Charging the battery can protect the battery and prolong the service life of the battery.

It should be noted that, after step S704 and step S705 are performed, step S702 is continued, and the processor determines whether the battery voltage value reaches the first predetermined voltage value, and determines whether the number of discharges reaches the first predetermined number of times; when the voltage value reaches the first predetermined number of times; When the first predetermined voltage value but the number of discharges reaches the first predetermined number of times, step S706 is performed.

It should be noted that, by executing steps S704 and S705, the battery can be charged and discharged while being charged. For example, when the second current value is 8A, when the battery is charged and discharged, the actual charging current is only 4A. At this time, the voltage value of the battery is less than the first predetermined voltage value, and it is also possible to charge for a certain period of time and discharge for a certain period of time. The effect of time electricity.

Step S706: When the voltage value reaches the first predetermined voltage value but the number of discharges reaches the first predetermined number of times, the processor continues to charge the battery with the first current value through the charging circuit.

In the embodiment of the present disclosure, when the voltage of the battery reaches the first predetermined voltage value, but the number of discharges reaches the first predetermined number of times, the processor continues to charge the battery with the first current value through the charging circuit. When the number of discharges reaches the first predetermined number of times, the processor continues to charge the battery with the first current value through the charging circuit, thereby accelerating the charging process, saving charging time, and improving charging efficiency.

It should be noted that, step S701-step S706 is the constant current charging stage; starting from step S707, the constant voltage charging stage is entered.

In step S707, when the battery voltage value reaches the second predetermined voltage value, the processor controls the charging circuit to charge the battery with the second predetermined voltage value, which is greater than the first predetermined voltage value.

The second predetermined voltage value is determined by the processor according to second configuration information of the battery, and the second configuration information includes a charge cut-off voltage value of the battery; correspondingly, the step of the processor determining the second predetermined voltage value may be: processing The controller takes the sum of the charge cut-off voltage value and the fourth predetermined voltage value as the second predetermined voltage value. For example, if the charge cut-off voltage is 4.35V, the third predetermined voltage value is 0.1V, the second predetermined voltage value is 4.45V.

In the embodiment of the present disclosure, when the voltage of the battery reaches the second predetermined voltage value, the charging circuit is controlled to charge the battery with the second predetermined voltage value, so that the charging current of the battery is gradually reduced by the potential difference, so as to avoid overcharging of the battery, It can protect the battery and prolong the service life of the battery.

It should be noted that, in the constant voltage charging stage, the processor charges the battery with the second predetermined voltage value, and the charging current at this time gradually decreases. The processor determines whether the current value of the battery decreases by continuously detecting the current value of the battery. To the third current value, when the current value of the battery decreases to the third current value, step S708 is performed.

In step S708, when the current value of the battery decreases to a third current value, the processor controls the charging circuit to charge the battery with the first predetermined voltage value.

In the process that the processor controls the charging circuit to charge the battery with the first predetermined voltage value, the processor determines whether the current value of the battery decreases to the fourth current value by continuously detecting the current value of the battery, and when the current value of the battery decreases to the At the fourth current value, step S709 is executed.

In step S709, when the current value of the battery decreases to a fourth current value, the processor controls the charging circuit to turn off, and the fourth current value is smaller than the third current value.

For example, the third current value may be 1A, and the fourth current value may be 500mA. Correspondingly, when the current value of the battery decreases to the fourth current value, the processor determines that the battery is fully charged, and controls the charging circuit to disconnect, thereby completely ending charging process.

In the embodiment of the present disclosure, when the current value of the battery decreases to the third current value, the charging circuit is controlled to charge the battery with the first predetermined voltage value, and when the current value of the battery decreases to the fourth current value, the processor controls The charging circuit is disconnected. Since the first predetermined voltage value is larger than the charging cut-off voltage of the battery, the battery can be fully charged. When the current value of the battery decreases to the fourth current value, the processor controls the charging circuit to disconnect, and the processor detects the current by detecting the current value. The value of the charging circuit is disconnected in time, which not only saves the charging time, but also prevents the battery from being overcharged, thereby protecting the battery and prolonging the service life of the battery.

In the embodiment of the present disclosure, the charging circuit is controlled to be turned on by the control unit, and the battery is charged with the first current value by the charging circuit; when the voltage of the battery reaches the first predetermined voltage value, the conduction of the charging circuit and the discharging circuit are alternately controlled. On and off; when the discharging circuit is on but the charging circuit is off, the battery is discharged through the discharging circuit; when the charging circuit is on but the discharging circuit is off, the battery is charged by the charging circuit. By alternately controlling the conduction and disconnection of the charging circuit and the discharging circuit, the charging and discharging are realized, which solves the problem of shortening the service life of the battery when the charging method in the related art performs long-term high-current charging, and can prolong the use of the battery. life.

Fig. 8 is a flowchart of a charging method according to an exemplary embodiment. As shown in FIG. 8 , the charging method is applied in an electronic device or a processor of the electronic device; in the embodiments of the present disclosure, the charging method is applied in a processor as an example for description. In addition, the electronic device is a mobile phone, and the number of discharges is 2 times as an example for description. Include the following steps:

In step S801, the processor controls the charging circuit to be turned on through the control unit, and charges the battery with the fifth current value through the charging circuit.

This step is the beginning of charging, and the way that the processor controls the conduction of the charging circuit through the control unit is the same as the way that the processor controls the conduction of the charging circuit through the control unit for the first time in step S701 , and will not be repeated here.

The determination method of the fifth current value is the same as the determination method of the first current value when the processor controls the charging circuit to be turned on for the first time in step S701, and the fifth current value is determined when the processor controls the charging circuit to be turned on for the first time. the first current value. For example, the fifth current value may be 10A, 12A. When the fifth current value is 10A, the processor charges the mobile phone battery with the charging current value of 10A through the charging circuit.

In the embodiment of the present disclosure, the processor controls the charging circuit to be turned on through the control unit, and charges the battery with the fifth current value through the charging circuit. The fifth current value is greater than 10A. Since the charging current is relatively large, the charging speed is fast, and fast and efficient charging can be realized.

In step S802, the processor determines whether the voltage value of the battery reaches a first predetermined voltage value.

If the charging cut-off voltage of the mobile phone is 4.35V and the first predetermined voltage is 4.4V, the processor continuously detects the voltage value of the mobile phone battery. When the voltage value of the mobile phone battery reaches 4.4V for the first time, step S803 is performed.

In step S803, when the voltage value of the battery reaches the first predetermined voltage value, the processor alternately controls the turn-on and turn-off of the charging circuit and the discharging circuit.

The manner in which the processor alternately controls the turn-on and turn-off of the charging circuit and the discharging circuit has been described in step S703, and will not be repeated here.

In step S804, when the discharge circuit is turned on but the charging circuit is turned off, the processor discharges the battery through the discharge circuit.

In the embodiment of the present disclosure, when the discharging circuit is turned on but the charging circuit is disconnected, the processor discharges the battery through the discharging circuit, and discharges the battery through the discharging circuit, so as to avoid that the ions only move toward the battery during the long-term charging process. It moves in one direction, thereby accelerating the expansion and contraction of the ions themselves, making the battery less durable. Discharging the battery through the discharge circuit can protect the battery and prolong the service life of the battery.

In step S805, when the charging circuit is turned on but the discharging circuit is turned off, the processor charges the battery through the charging circuit.

The manner in which the processor charges the battery through the charging circuit is the same as the manner in step S705, which is not repeated here. It should be noted that at this time, the processor charges the battery with the second current value through the charging circuit, and the second current value is smaller than the fifth current value. If the current value is 8A, the processor uses the charging circuit to charge the battery with 8A. current value to charge the battery.

In the embodiment of the present disclosure, the processor controls the alternate execution of steps S804 and S805, and the cycle of the alternate control reaches the millisecond level to realize the charging and discharging of the battery, which avoids that the ions only move toward one battery during the long-term charging process. Directional movement, thereby accelerating the expansion and contraction of the ions themselves, causing the battery to be less durable. Discharging the battery through the discharge circuit can protect the battery and prolong the service life of the battery.

In step S806, when the current cumulative discharge duration for discharging the battery by the processor through the discharging circuit reaches the first predetermined duration, the processor controls the discharging circuit to be turned off and the charging circuit to be turned on, and the sixth current value is passed through the charging circuit at the sixth current value. Charge the battery.

The sixth current value is the same as the second current value, and the sixth current value is 8A.

If the first predetermined duration is 3 minutes, that is, the first discharge duration is 3 minutes, when the processor discharges the battery through the discharge circuit for 3 minutes, the processor controls the discharge circuit to disconnect. When the processor is charging and discharging the battery, the charging current of the battery is 8A, but the processor is charging and discharging the battery. When the discharging circuit discharges for 3 minutes, the actual charging current is only 4A. At this time, the voltage of the battery will less than 4.4V. It realizes the effect of charging for a certain period of time and discharging it for a certain period of time. At this time, the processor controls the charging circuit to be turned on, and continues to charge the battery with a current value of 8A.

In step S807, the processor determines whether the voltage value of the battery reaches a first predetermined voltage value.

The processor continuously detects the voltage value of the battery, and when the voltage value of the battery reaches 4.4V for the second time, it discharges the battery for the second time through steps S808-S810.

In step S808, when the voltage value of the battery reaches the first predetermined voltage value, the processor alternately controls the turn-on and turn-off of the charging circuit and the discharging circuit.

The manner in which the processor alternately controls the turn-on and turn-off of the charging circuit and the discharging circuit has been described in step S703, and will not be repeated here.

In step S809, when the discharge circuit is turned on but the charging circuit is turned off, the processor discharges the battery through the discharge circuit.

In the embodiment of the present disclosure, when the discharging circuit is turned on but the charging circuit is disconnected, the processor discharges the battery through the discharging circuit, and discharges the battery through the discharging circuit, so as to avoid that the ions only move toward the battery during the long-term charging process. It moves in one direction, thereby accelerating the expansion and contraction of the ions themselves, making the battery less durable. Discharging the battery through the discharge circuit can protect the battery and prolong the service life of the battery.

In step S810, when the charging circuit is turned on but the discharging circuit is turned off, the processor charges the battery through the charging circuit.

At this time, the seventh current value for the processor to charge the battery through the charging circuit is determined according to the current third power value of the battery. The seventh current value is smaller than the sixth current value. If the seventh current value is 6A, the processor charges the battery with a current value of 6A through the charging circuit.

In the embodiment of the present disclosure, in the process of alternately conducting the charging circuit and the discharging circuit, when the charging circuit is on but the discharging circuit is off, the processor charges the battery through the charging circuit, which can save charging time and improve charging efficiency .

In step S811, when the current cumulative discharge duration for discharging the battery by the processor through the discharging circuit reaches the second predetermined duration, the processor controls the discharging circuit to be turned off and the charging circuit to be turned on, and continues to use the seventh current through the charging circuit value to charge the battery.

If the second predetermined duration is 2 minutes, when the current cumulative discharge duration of the processor discharging the battery through the discharging circuit reaches 2 minutes, the processor controls the discharging circuit to be turned off and the charging circuit to be turned on, and the processor continues to operate at 6A current value to charge the battery. And boost the voltage to 4.45V instead of the previous 4.4V. The reason is that before charging, the user is almost using the battery power of the mobile phone. This process is the process of battery discharge. Therefore, during the charging process, the constant voltage value cannot be set too high, such as 4.45V, if the setting is too high Instead, it will accelerate the aging of the battery, and should be set at the normal value of 4.4V. In the process of 4.4V, after two charging and discharging processes, the battery already has a certain pressure resistance, so the voltage of the constant voltage value can be set at 4.45V to make up for the time wasted due to discharge. Therefore, in the third process, the constant voltage value is set at 4.45V, and the charging current is still maintained at 6A, which can speed up the charging process.

In step S812, when the battery voltage value reaches the second predetermined voltage value, the processor controls the charging circuit to charge the battery with the second predetermined voltage value, and the second predetermined voltage value is greater than the first predetermined voltage value.

When the battery voltage reaches 4.45V, there is no need to turn on the discharge circuit. The processor controls the charging circuit to charge the battery with a voltage value of 4.45V, and uses the potential difference to gradually reduce the current value to avoid overcharging, which can protect the battery and prolong the battery life. service life.

In step S813, when the current value of the battery decreases to a third current value, the processor controls the charging circuit to charge the battery with the first predetermined voltage value.

If the third current value is 1A, when the current value of the battery decreases to 1A, the processor controls the charging circuit to charge the battery with a voltage value of 4.4V.

In the embodiment of the present disclosure, when the current value of the battery is reduced to 1A, the processor charges the battery with a voltage value of 4.4V. Since 4.4V is smaller than 4.45V, the mobile phone can be prevented from being overcharged and the service life of the battery can be prolonged.

In step S814, when the current value of the battery decreases to a fourth current value, the processor controls the charging circuit to be turned off, and the fourth current value is smaller than the third current value.

If the fourth current value is 500mA, when the current value of the battery is reduced to 500mA, the processor controls the charging circuit to be disconnected to end the charging.

In the embodiment of the present disclosure, when the current value of the battery is reduced to 500mA, the processor controls the charging circuit to be disconnected to end charging, and the processor disconnects the charging circuit in time by detecting the current value, which not only saves the charging time, but also reduces the Prevents overcharging of the battery, thus protecting the battery and extending the life of the battery.

In the embodiment of the present disclosure, the charging circuit is controlled to be turned on by the control unit, and the battery is charged with the first current value by the charging circuit; when the voltage of the battery reaches the first predetermined voltage value, the conduction of the charging circuit and the discharging circuit are alternately controlled. On and off; when the discharging circuit is on but the charging circuit is off, the battery is discharged through the discharging circuit; when the charging circuit is on but the discharging circuit is off, the battery is charged by the charging circuit. By alternately controlling the conduction and disconnection of the charging circuit and the discharging circuit, the charging and discharging are realized, which solves the problem of shortening the service life of the battery when the charging method in the related art performs long-term high-current charging, and can prolong the use of the battery. life.

Those of ordinary skill in the art can understand that all or part of the steps of implementing the above embodiments can be completed by hardware, or can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium. The storage medium mentioned may be a read-only memory, a magnetic disk or an optical disk, etc.

The above descriptions are only preferred embodiments of the present disclosure, and are not intended to limit the present disclosure. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present disclosure shall be included in the protection of the present disclosure. within the range.

Claims (11)

1. A battery, comprising: the battery comprises a battery cell, a charging circuit, a discharging circuit and a control unit;

the control unit is electrically connected with the charging circuit and the discharging circuit respectively;

the charging circuit is electrically connected with the positive electrode of the battery cell, one end of the discharging circuit is electrically connected with the positive electrode of the battery cell, and the other end of the discharging circuit is electrically connected with the negative electrode of the battery cell;

the control unit is used for controlling the conduction of the charging circuit or the conduction of the discharging circuit;

the charging circuit is used for charging the battery cell when the battery cell is conducted;

and the discharge circuit is used for discharging the battery cell when the battery cell is switched on.

2. The battery of claim 1, wherein the discharge circuit comprises: a first switch and a resistor;

one end of the first switch is electrically connected with the positive electrode of the battery cell, the other end of the first switch is electrically connected with one end of the resistor, and the other end of the resistor is electrically connected with the negative electrode of the battery cell;

the first switch is electrically connected with the control unit;

the control unit is used for controlling the first switch to be closed;

the first switch is used for conducting the discharge circuit when being closed.

3. The battery according to claim 1 or 2, characterized in that the battery further comprises: a second switch;

one end of the second switch is electrically connected with the positive electrode of the battery cell, and the other end of the second switch is respectively connected with the control unit and the charging circuit;

the control unit is used for controlling the second switch to be closed;

the second switch is used for conducting the charging circuit when the second switch is closed.

4. An electronic device, comprising a housing, a processor, a display screen module, and the battery of any of claims 1-3;

the battery and the processor are arranged in the shell, and the processor is electrically connected with the battery;

the display screen module is arranged on the shell;

and the processor is used for controlling the battery to supply power to the display screen module.

5. A charging method for charging the battery according to any one of claims 1 to 3, the method comprising:

controlling the charging circuit to be conducted through the control unit, and charging the battery at a first current value through the charging circuit;

alternately controlling the charging circuit and the discharging circuit to be turned on and off when the voltage of the battery reaches a first predetermined voltage value;

discharging the battery through the discharge circuit when the discharge circuit is on but the charge circuit is off;

when the charging circuit is on but the discharging circuit is off, the battery is charged through the charging circuit.

6. The method of claim 5, wherein alternately controlling the charging circuit and the discharging circuit to turn on and off when the voltage of the battery reaches a first predetermined voltage value comprises:

and when the voltage of the battery reaches the first preset voltage value and the discharge times do not reach the first preset times, alternately controlling the charging circuit and the discharge circuit to be switched on and off.

7. The method of claim 6, further comprising:

when the voltage of the battery reaches the first preset voltage value but the discharge times reach the first preset times, continuing to charge the battery at the first current value through the charging circuit;

and when the voltage of the voltage reaches a second preset voltage value, controlling the charging circuit to charge the battery at the second preset voltage value, wherein the second preset voltage value is larger than the first preset voltage value.

8. The method of claim 5, wherein said charging the battery by the charging circuit comprises:

acquiring current first battery information of the battery, and determining a second current value matched with the first battery information according to the first battery information;

and charging the battery by the second current value through the charging circuit, wherein the second current value is smaller than the first current value.

9. The method of claim 5, further comprising:

when the charging of the battery is started at this time, the step of controlling the conduction of the charging circuit through the control unit and charging the battery at the first current value through the charging circuit is executed; or,

and when the accumulated discharge time of the battery discharged through the discharge circuit reaches a first preset time, executing the step of controlling the discharge circuit to be disconnected and the charging circuit to be connected through the control unit, and charging the battery through the charging circuit by the first current value.

10. The method of claim 5, further comprising:

when the charging circuit is controlled to be conducted for the first time when the battery is charged at this time, acquiring configuration information of the battery, and determining the first current value matched with the configuration information according to the configuration information;

when the battery is charged at this time, the charging circuit is not controlled to be conducted for the first time, the current second battery information of the battery is obtained, and the first current value matched with the second battery information is determined according to the second battery information.

11. The method of claim 7, further comprising:

when the current value of the battery is reduced to a third current value, controlling the charging circuit to charge the battery at the first preset voltage value, wherein the third current value is smaller than the second current value;

and when the current value of the battery is reduced to a fourth current value, controlling the charging circuit to be disconnected, wherein the fourth current value is smaller than the third current value.

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