CN116865385A - Quick charge method, electronic device, and readable storage medium - Google Patents
Quick charge method, electronic device, and readable storage medium Download PDFInfo
- Publication number
- CN116865385A CN116865385A CN202310797165.5A CN202310797165A CN116865385A CN 116865385 A CN116865385 A CN 116865385A CN 202310797165 A CN202310797165 A CN 202310797165A CN 116865385 A CN116865385 A CN 116865385A
- Authority
- CN
- China
- Prior art keywords
- current
- charging
- voltage
- battery cell
- cell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The application discloses a quick charging method, electronic equipment and a readable storage medium, and belongs to the technical field of communication. The method comprises the following steps: detecting the voltage and the current of the battery cell to obtain a detection result; determining a first charging current according to the detection result; a charging module provides the first charging current to the battery cell; the battery core comprises a plurality of battery core threshold voltages, and the battery core corresponds to a plurality of different preset maximum chargeable currents respectively; the first charging current is used for enabling the battery cell to reach a first charging voltage in at least one period; the first charging voltage does not exceed a target cell threshold voltage corresponding to the cell before the charging module supplies power; the one period corresponds to a time from the detection result to the charging module supplying the first charging current.
Description
Technical Field
The application belongs to the technical field of communication, and particularly relates to a quick charging method, electronic equipment and a readable storage medium.
Background
At present, more and more electronic devices support quick charging, after the quick charging is started, an electric meter detects the voltage of a battery cell and informs a processing system of the electronic device, the processing system informs a quick charging module of the electronic device to perform constant current charging according to the voltage of the battery cell, and the quick charging module performs stepped constant current charging according to a plurality of battery cell threshold voltages corresponding to the battery cell, and finally performs constant voltage charging. The cell threshold voltages are pre-designed according to the capabilities of the cells, with one cell threshold voltage corresponding to a maximum chargeable current.
The corresponding maximum chargeable current is required to be adjusted according to the battery cell voltage during the step constant current charging, however, the time from the detection of the battery cell voltage by the fuel gauge to the adjustment of the maximum chargeable current by the quick charging module and the charging is in the second level. Thus, each time the external fast charging power supply is inserted to perform fast charging with the target maximum chargeable current, the battery cell may have a high voltage exceeding the threshold voltage of the battery cell corresponding to the target maximum chargeable current within a few seconds. Along with higher and higher charging power, the charging current is very large, so that the voltage of the battery core is very high, and the safety of the battery and the withstand voltage risks of other devices of the system are increased.
Disclosure of Invention
The embodiment of the application aims to provide a quick charge method, electronic equipment and a readable storage medium, which can solve the problems of battery safety and the risk of withstand voltage of other devices of a system.
In a first aspect, an embodiment of the present application provides a quick charging method, including:
detecting the voltage and the current of the battery cell to obtain a detection result;
determining a first charging current according to the detection result;
a charging module provides the first charging current to the battery cell;
the battery core comprises a plurality of battery core threshold voltages, and the battery core corresponds to a plurality of different preset maximum chargeable currents respectively; the first charging current is used for enabling the battery cell to reach a first charging voltage in at least one period; the first charging voltage does not exceed a target cell threshold voltage corresponding to the cell before the charging module supplies power; the one period corresponds to a time from the detection result to the charging module supplying the first charging current.
In a second aspect, an embodiment of the present application provides an electronic device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method as described in the first aspect.
In a third aspect, embodiments of the present application provide a readable storage medium having stored thereon a program or instructions which when executed by a processor perform the steps of the method according to the first aspect.
In a fourth aspect, an embodiment of the present application provides a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a program or instructions to implement a method according to the first aspect.
In a fifth aspect, embodiments of the present application provide a computer program product stored in a storage medium, the program product being executable by at least one processor to implement the method according to the first aspect.
In the embodiment of the application, the voltage and the current of the battery core are detected to obtain a detection result, the first charging current is determined according to the detection result and is provided for the battery core by the charging module, the first charging voltage reached by the battery core in at least one period by the first charging current is not higher than the corresponding battery core threshold voltage of the battery core before the battery core is powered by the charging module, so that safer and finer quick charging control is provided, the voltage of the battery core in the quick charging process is not higher than the threshold voltage of the battery core standard and the withstand voltage of other devices of the system, and the battery safety and the withstand voltage risk of other devices of the system caused by the second-level high voltage of the battery core when the charger is inserted for quick charging are avoided, especially after the battery core is aged.
Drawings
Fig. 1 is a flowchart of a fast charging method according to an embodiment of the application.
Fig. 2 is a schematic diagram of an application scenario of a fast charging method according to an embodiment of the present application.
Fig. 3 is a flowchart of a fast charging method according to a first embodiment of the present application.
Fig. 4 is a schematic diagram of an equivalent circuit of a cell according to an embodiment of the present application.
Fig. 5 is a schematic diagram showing the current-voltage variation of the fast charging method according to the first embodiment of the present application.
Fig. 6 is a flowchart of a fast charging method according to a second embodiment of the present application.
Fig. 7 is a schematic diagram showing a current-voltage variation of a fast charging method according to a second embodiment of the present application.
Fig. 8 is a block diagram showing the structure of an electronic device according to an embodiment of the present application.
Fig. 9 is a schematic diagram of a hardware structure of an electronic device implementing an embodiment of the present application.
Detailed Description
The technical solutions of the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which are obtained by a person skilled in the art based on the embodiments of the present application, fall within the scope of protection of the present application.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
The quick charging method provided by the embodiment of the application is described in detail below through specific embodiments and application scenes thereof with reference to the accompanying drawings.
Fig. 1 is a schematic flow chart of a fast charging method according to an embodiment of the present application, and fig. 2 is a schematic application scenario diagram of the fast charging method according to an embodiment of the present application.
As shown in fig. 1, the quick charge method according to the embodiment of the present application includes the following steps:
step 102, detecting the voltage and the current of the battery cell to obtain a detection result.
Step 104, determining a first charging current according to the detection result;
step 106, a charging module provides the first charging current to the battery cell;
the battery core comprises a plurality of battery core threshold voltages, and the battery core corresponds to a plurality of different preset maximum chargeable currents respectively; the first charging current is used for enabling the battery cell to reach a first charging voltage in at least one period; the first charging voltage does not exceed a target cell threshold voltage corresponding to the cell before the charging module supplies power; the one period corresponds to a time from the detection result to the charging module supplying the first charging current.
The fast charging method of the embodiment of the application can be applied to an electronic device comprising a rechargeable battery, and executed by a processor in the system 10 of the electronic device, the rechargeable battery comprising a battery cell 20.
In step 102, when the system 10 recognizes that the standard charger is inserted, for example, the fast charging mode is started after the fast charging charger is inserted, the charging module, that is, the fast charging module 40 of fig. 2, is started, the electricity meter 50 connected to the positive electrode and the negative electrode of the battery cell 20 detects the voltage and the current of the battery cell 20, and the electricity meter 50 is connected to the processor of the system 10, so that the detected voltage and the current of the battery cell 20 can be notified to the system 10, and the system 10 obtains the detection result through the detected voltage and the detected current of the battery cell 20 by the electricity meter 50.
When the system 10 recognizes that the normal charging mode is enabled after the standard charger is inserted, the normal charging module is started. The embodiment of the present application is mainly described with respect to a charging mode of the quick charging module 40 corresponding to the quick charging mode. In one example, the system 10 may communicate with the fast charge module 40, the fuel gauge 50, respectively, via an I2C bus.
In step 104, a first charging current for Constant Current (CC) charging the battery cell 20 is determined according to the detected voltage and current of the battery cell 20, where the first charging current is a current used by the fast charging module 40 to charge the battery cell 20 with constant current after the insertion of the fast charging charger is identified. That is, the first charging current is an initial step constant current of the step constant current charging by the fast charging module 40, and is a maximum step constant current. During subsequent step constant current charging, the fuel gauge 50 continuously detects the voltage and current of the battery cell 20 and feeds it back to the system 10. The system 10 informs the fast charging module 40, and finally the fast charging module 40 adjusts the first charging current for constant current charging to the battery cell 20.
The time from the detection result of the electricity meter 50 to the first charging current at which the constant current is supplied from the quick charge module 40 corresponds to a period that requires a time of the order of seconds for closed-loop control. Thus, each time the fast charger is inserted for fast charging, the battery cell 20 may develop a high voltage within seconds that far exceeds the cell threshold voltage corresponding to the maximum chargeable current allowed by the design capability of the battery cell 20.
The battery core 20 has a plurality of battery core threshold voltages, and when in stage constant current charging, the maximum chargeable current allowed by the design capacity corresponding to the current battery core threshold voltage is adopted to perform step constant current charging according to the current battery core threshold voltage of the battery core 20, and finally constant voltage charging is performed.
For example, the cell threshold voltage of the cell 20 and the corresponding maximum chargeable current are related as follows: the charging method comprises the steps of constant current charging to 4.15V with a maximum chargeable current of 20A, constant current charging to 4.19V with a maximum chargeable current of 14A, constant current charging to 4.43V with a maximum chargeable current of 10A, constant current charging to 4.5V with a maximum chargeable current of 8A, and finally constant voltage charging to 2.5A.
Along with the higher and higher charging power, the charging current is very large, so that the voltage of the battery core rises very high in one period, and the voltage withstand risk of the battery and other devices of the system is increased.
In the embodiment of the present application, the first charging current is used to make the battery cell 20 reach the first charging voltage in at least one period, and the reached first charging voltage does not exceed the target battery cell threshold voltage corresponding to the battery cell before the fast charging module 40 supplies power. The target cell threshold voltage corresponding to the cell before the fast charging module 40 supplies power, that is, the initial voltage before the cell 20 is not inserted into the fast charging charger for fast charging, where the initial voltage may be smaller than the minimum voltage of the plurality of cell threshold voltages, may be located between any two adjacent cell threshold voltages, or may be greater than the maximum voltage of the plurality of cell threshold voltages.
The initial voltage of the battery cell 20 is different, and the corresponding threshold voltages of the battery cells are different, so that the preset maximum chargeable current required to be charged by constant current is different.
In one embodiment, the first charging current to constant current charge the cell 10 is obtained in a stepwise increasing manner.
Specifically, determining the first charging current according to the detection result includes: acquiring an initial voltage of the battery cell detected before the charging module supplies power; determining the target cell threshold voltage corresponding to the cell according to the initial voltage; the charging module is controlled to be increased in steps at preset current intervals from zero, so that a second charging current is obtained and power is supplied to the battery cell; acquiring the detection result; and according to the detection result, taking the second charging current as the first charging current under the condition that the second charging current enables the charging voltage which can be achieved by the battery cell to be smaller than the target battery cell threshold voltage.
In this embodiment, when the quick charge charger is inserted for quick charging, the electric quantity meter 50 detects that the voltage of the battery cell 20 is the initial voltage before the quick charge charger is not inserted, for example, 4V. If the plurality of cell threshold voltages of the cell 20 are respectively 4.15V corresponding to a maximum chargeable current of 20A, 4.19V corresponding to a maximum chargeable current of 14A, 4.43V corresponding to a maximum chargeable current of 10A, and 4.5V corresponding to a maximum chargeable current of 8A.
And obtaining the cell threshold voltage 4.15V corresponding to the current cell 20 and requiring fast charge to be boosted to the minimum cell 20 according to the initial voltage 4V of the cell 20.
In the embodiment of the present application, the fast charging module 40 does not fast charge the battery cell 20 according to the maximum chargeable current of 20A corresponding to the conventional battery cell threshold voltage of 4.15V. Instead, the system 10 controls the fast charge module 40 to increase the constant current to charge the battery cell 20 from zero at a preset current interval in steps, resulting in a second charge current.
Optionally, the preset current interval is 1-2A. That is, the system 10 controls the fast charge module 40 to rise 1-2A as the second charge current in one cycle. At a preset current interval of 1A, a constant charging current to charge the battery cells 20 is stepped up in the form of 1A, 2A, 3A. And, the voltage and current of the battery cell 20 during the fast charging with the second charging current are detected in real time by the electricity meter 50 every cycle. Under the condition that the current second charging current is detected to enable the charging voltage achieved by the battery cell 20 to be still smaller than the threshold voltage of the battery cell by 4.15V, the second charging current is increased by 1A step in the next period, and then the battery cell 20 is quickly charged as the first charging current.
Thus, the first charging current gradually increases the battery cell 20 to reach the first charging voltage in each period, and the first charging voltage of the battery cell 20 in each period does not exceed the battery cell threshold voltage 4.15V corresponding to the initial voltage 4V of the battery cell before the fast charging module 40 supplies power. Therefore, under the condition of obtaining the constant current for rapidly charging the battery cell 20 in the stepping increasing mode, the situation that the battery cell 20 is subjected to high voltage exceeding the battery cell threshold voltage corresponding to the battery cell 20 in a few seconds when a rapid charging charger is inserted each time can be avoided, the safety of the battery is ensured, and the damage risk to devices caused by exceeding the withstand voltage of other devices of the system can be avoided.
In the process of rapidly charging by increasing the first charging current step by step, after the charging current is increased step by step for a plurality of times, the second charging current in the current period may be used for charging, so that the charging voltage of the battery cell 20 is not less than the target battery cell threshold voltage, but in the next period, after the second charging current in the previous period is increased step by 1A, the battery cell 20 is rapidly charged as the first charging current, and it is detected that the voltage of the battery cell 20 exceeds the target battery cell threshold voltage. At this time, to avoid damaging the battery cell, the step-by-step increase of the charging current is stopped to charge the battery cell 20, but the preset magnitude is reduced based on the current second charging current, so as to obtain the first charging current for quickly charging the battery cell 20, and ensure that the voltage of the battery cell 20 does not exceed the target battery cell threshold voltage.
Optionally, determining the first charging current according to the detection result further includes: and according to the detection result, under the condition that the second charging current enables the charging voltage which can be achieved by the battery cell to be not smaller than the target battery cell threshold voltage, the first charging current is obtained after the second charging current is reduced by a preset magnitude.
The fast charging method of this embodiment of the present application is described with reference to fig. 3. As shown in fig. 3, the method comprises the following steps:
step 202, inserting a charger;
step 204, the system 10 determines whether it is a fast charger? If (Y), go to step 206, if (N), go to step 216;
step 206, the electricity meter 50 detects the voltage of the battery cell 20;
step 208, system 10 reads the voltage to cell 20 via fuel gauge 50;
step 210, the system 10 informs the charging module to start the fast charging, and step-up the charging current;
step 212, system 10 periodically reads fuel gauge 50 and obtains the voltage of battery cell 20;
step 214, when detecting that the voltage of the battery cell 20 reaches the corresponding battery cell threshold voltage, the system 10 informs the charging module to adjust the constant current charging current, and returns to step 212;
in step 216, the charging module charges the battery cells 20 in a normal charging manner.
In the embodiment of the application, after the fast charging charger is inserted, the charging current is raised step by step during the charging of the fast charging module 40, the voltage of the battery cell 20 can be monitored in each time period, a round of closed loop regulation and control is performed, and the charging current is lowered step by step after the detection of reaching the target battery cell threshold voltage, so that the voltage is ensured not to exceed the battery cell specification.
Optionally, the preset magnitude is 20% -30% of the preset current interval. Taking the example that the preset current interval is 1A and the preset size is 20% of the preset current interval, the charging current of 0.2A can be reduced based on the first charging current of the previous period after the target cell threshold voltage is detected, so that the current period fast charging module 40 needs to provide the first charging current for fast charging of the cell 20.
As can be seen from the equivalent circuit of the cell 20 in fig. 4, uc=uo+i×rc, where Uc represents the cell voltage, uo represents the initial voltage of the cell, I represents the charging current, and Rc represents the initial internal resistance of the cell.
Assuming an initial voltage of 4V for the battery cell 20, an initial internal resistance of 15mohm, after the fast charging charger is inserted, the fuel gauge 50 detects the initial voltage 4V <4.15V for the battery cell 20, and the system 10 reads to inform the fast charging module 40 to start fast charging, and step up the charging current from zero at a current interval of 1A.
As shown in fig. 5, the change of the fast charge current of the battery cell 20 and the voltage of the battery cell 20 during the fast charge process is illustrated. The charging current is stepped up from zero, with a corresponding increase in the voltage of the cell 20.
As can be seen from uc=4+10×15=4.15v, in theory, when the charging current is stepped up to 10A, the cell voltage uc=4.15v is detected, i.e. one of the cell threshold voltages 4.15V of the cell 20 is reached. At this time, 200mA may be further lowered on the basis of 10A, and charged with 9.8A as the first charging current. Uc=4v+9.8a×15mohm= 4.147V, the cell threshold voltage is not exceeded by 4.15V.
As shown in fig. 5, when the voltage of the battery cell 20 exceeds the battery cell threshold voltage by 4.15V, the charging current may be stepped down for step fast charging, or may be directly reduced to a corresponding preset maximum chargeable current and then used for step fast charging.
Optionally, the method further comprises: acquiring the detection result in the process that the charging module provides the first charging current for the battery cell; and according to the detection result, reducing the first charging current to a first preset maximum chargeable current under the condition that the first charging current enables the charging voltage which can be achieved by the battery core to be larger than the target battery core threshold voltage, wherein the first preset maximum chargeable current is the maximum value of all preset maximum chargeable currents which are smaller than the first charging current in the plurality of different preset maximum chargeable currents.
Assuming the present charge current is 9.8A, then the cell voltage is detected to exceed 4.15V in the next cycle, and the fast charge module 40 needs to follow the maximum chargeable current corresponding to a cell threshold voltage of 4.5V less than 9.8A. Taking the example that the maximum chargeable current corresponding to the battery cell threshold voltage of 4.15V is 20A, the maximum chargeable current corresponding to 4.19V is 14A, the maximum chargeable current corresponding to 4.43V is 10A, and the maximum chargeable current corresponding to 4.5V is 8A, the maximum chargeable current smaller than 9.8A is needed to be selected from the maximum chargeable current, namely, the constant-current quick charging is performed by 8A.
When constant current quick charge is carried out according to 8A, step adjustment is not needed, and the battery cell 20 can be directly and quickly charged according to 8A constant current. Taking the example of constant voltage charging to 2.5A after the maximum chargeable current corresponding to 8A is charged to 4.5V, when the voltage of the battery cell 20 reaches the threshold voltage of 4.5V due to the detection of the 8A constant current charging, the battery cell 20 is charged by adopting the constant voltage.
For the case of aging of the battery cell, for example, the internal resistance of the battery cell increases to 40mohm after the battery cell ages, the fast charging charger is inserted to start fast charging, and when the initial voltage of the battery cell 20 reaches 4.15V corresponding to one of the battery cell threshold voltages, uc= (4.15V-4V)/40 mohm=3.75a. In theory, when the charging current is raised to 4A, uc=4v+4a×40mohm=4.16v, that is, the charging current exceeds the threshold voltage of the battery cell by 4.15V, at this time, the charging current will stop raising, and even if the smaller charging current exceeds the threshold voltage of the battery cell, the safety of the battery cell and the withstand voltage of other devices of the system will not be obviously damaged by exceeding a small amount of voltage.
In another embodiment, the first charging current for constant current charging of the battery cell 10 is obtained by estimating the maximum charging current corresponding to the battery cell 10 not exceeding the battery cell threshold voltage. Thus, the cell 10 can jump up to the cell threshold voltage in one cycle.
Specifically, determining the first charging current according to the detection result includes: acquiring an initial voltage of the battery cell detected before the charging module supplies power; determining the target cell threshold voltage corresponding to the cell according to the initial voltage; determining the internal resistance of the battery cell; determining a first maximum chargeable current corresponding to the battery cell according to the initial voltage, the target battery cell threshold voltage and the internal resistance of the battery cell; and determining the first charging current according to the smaller of the first maximum chargeable current and the preset maximum chargeable current corresponding to the target cell threshold voltage.
In this embodiment, when the fast charger is inserted for fast charging, the initial voltage before the charging module supplies power, that is, the voltage of the battery cell 20 detected by the fuel gauge 50 before the fast charger is not inserted, for example, 4V. If the plurality of cell threshold voltages of the cell 20 are respectively 4.15V corresponding to a maximum chargeable current of 20A, 4.19V corresponding to a maximum chargeable current of 14A, 4.43V corresponding to a maximum chargeable current of 10A, and 4.5V corresponding to a maximum chargeable current of 8A. And obtaining the cell threshold voltage 4.15V corresponding to the current cell 20 and requiring fast charge to be boosted to the minimum cell 20 according to the initial voltage 4V of the cell 20.
Then, the current internal resistance of the battery cell 20 is determined, and the charging current which can lead the voltage reached after the battery cell is charged in a constant current in one period to not exceed the target battery cell threshold voltage corresponding to the initial voltage of the battery cell 20 before the fast charging charger is inserted can be calculated.
As described above, the plurality of cell threshold voltages included in the battery cell 20 each correspond to a preset maximum chargeable current. In the embodiment of the present application, the first maximum chargeable current corresponding to the battery cell 20 may be calculated according to the initial voltage of the battery cell 20, the battery cell threshold voltage corresponding to the initial voltage, and the internal resistance of the battery cell.
Therefore, the internal resistance of the battery cell 20 is determined before the first maximum chargeable current corresponding to the battery cell 20 is determined.
Specifically, determining the internal resistance of the battery cell includes: acquiring a first voltage and a first current of the detected battery cell when the charging module supplies power to the battery cell and a system load at the same time; acquiring a second voltage and a second current of the detected battery cell under the condition that the charging module only supplies power to the system module, wherein the second voltage is equal to the initial voltage; and determining the internal resistance of the battery cell according to the first voltage, the first current, the second voltage and the second current.
Assuming the current internal resistance of the battery cell 20 is Rc and the initial voltage is 4V, after the fast-charging charger is inserted, the fast-charging module 40 supplies power to the battery cell 20 and the load of the system 10 at the same time, and the fuel gauge 50 may detect the first voltage U1 and the first current I1 of the battery cell 20. According to the initial voltage of the battery cell being 4V, the corresponding threshold voltage of the battery cell can be determined to be 4.15V, and the maximum charging current Ic corresponding to the threshold voltage of the battery cell is 20A.
When the fast charge module 40 is configured to only power the load of the system 10 and not power the battery cell 20, the fuel gauge 50 detects the second voltage U2 and the second power of the battery cell 20Flow I2, wherein the second current I2 is 0. Second voltage U2, i.e. initial voltage U of cell 20 shown in FIG. 3 O 。
Specifically, determining the internal resistance of the battery cell according to the first voltage, the first current, the second voltage, and the second current includes: determining the internal resistance of the battery cell according to the following formula, wherein Rc= (U2-U1)/(I2-I1); wherein Rc represents the internal resistance of the battery cell, U1 represents the first voltage, I1 represents the first current, U2 represents the second voltage, and I2 represents the second current.
According to the above formula rc= (U2-U1)/(I2-I1), the internal resistance of the battery cell 20 can be calculated. Then, the first maximum chargeable current corresponding to the battery cell 20 may be determined according to the initial voltage of the battery cell 20, the battery cell threshold voltage corresponding to the initial voltage, and the internal resistance.
Specifically, determining a first maximum chargeable current corresponding to the battery cell according to the initial voltage, the target battery cell threshold voltage and the internal resistance of the battery cell, including: determining the first maximum chargeable current according to the following formula imax= (Uc-U2)/Rc; wherein Imax represents the first maximum chargeable current and Uc represents the target cell threshold voltage.
As described above, u2=u O Imax= (Uc-U) O ) /Rc. As can be seen from the equivalent circuit of the battery cell 20 in fig. 3, imax is the current flowing through the internal resistance Rc.
Assuming that the internal resistance rc= -15 mohm of the battery cell 20 is calculated in the initial state, the maximum chargeable current imax= (4.15-4)/15 mohm=10a of the battery cell voltage threshold 4.15V corresponding to the initial voltage 4V is calculated in the next step, taking the smaller value 10A of Imax (10A) and Ic (20A), the system 10 informs the fast charging module 40 to charge with the smaller value 10A, and if uc=4v+10a×15mohm=4.15V does not exceed the battery cell threshold voltage 4.15V corresponding to the battery cell 20.
In one embodiment, the current of the preset proportion may be suitably reduced on the basis of a determined smaller value, for example 20% -30%. Taking a 200mA reduction current on the basis of a smaller value of 10A, taking a 9.8A constant current charging as an example, uc=4v+9.8a×15mohm= 4.147V. In this case, the voltage of the cell 20 is about 4.147V, which is not more than 4.15V than the cell threshold voltage corresponding to the cell 20.
Assuming the present charge current is 3.55A, then the cell voltage is detected to exceed 4.15V in the next cycle, and the fast charge module 40 needs to follow the maximum chargeable current corresponding to a cell threshold voltage of 4.5V less than 9.8A. Taking the example that the maximum chargeable current corresponding to the battery cell threshold voltage of 4.15V is 20A, the maximum chargeable current corresponding to 4.19V is 14A, the maximum chargeable current corresponding to 4.43V is 10A, and the maximum chargeable current corresponding to 4.5V is 8A, the maximum chargeable current smaller than 9.8A is needed to be selected from the maximum chargeable current, namely, the constant-current quick charging is performed by 8A.
For the case that the battery cell 20 is aged, the current internal resistance of the battery cell 20 is calculated first, and the internal resistance of the battery cell 20 is calculated to be increased to 40mohm after aging in an initial state. Next, the maximum chargeable current imax= (4.15-4)/40 mohm=3.75A, which does not exceed the cell voltage threshold 4.15V corresponding to the initial voltage 4V, is calculated, the smaller value 3.75A of Imax (3.75A) and Ic (20A) is taken, and the system 10 notifies the fast charging module 40 to charge with the smaller value 3.75A, and if uc=4v+3.75a is 40 mohm=4.15V, the maximum chargeable current does not exceed the cell threshold voltage 4.15V corresponding to the cell 20.
In one embodiment, the current of the preset proportion may be reduced appropriately on the basis of the determined smaller value. Taking the example of reducing 200mA current on the basis of a smaller value of 3.75A, taking 3.55A constant current charging, uc=4v+3.55a×40mohm=4.142V. In this case, the voltage of the cell 20 is about 4.142V, which is not more than 4.15V than the cell threshold voltage corresponding to the cell 20.
The fast charging method of this embodiment of the present application is described with reference to fig. 6. As shown in fig. 6, the method comprises the following steps:
step 302, inserting a charger;
step 304, the system 10 determines whether it is a fast charger? If (Y), go to step 306, if (N), go to step 318;
step 306, the electricity meter 50 detects the voltage and current of the battery cell 20;
step 308, the system 10 configures a charging module, that is, the fast charging module 40 only supplies power to the load of the system 10, does not charge the battery cell 20, and reads the voltage and the current of the battery cell 20 at this time in a delayed manner;
step 310, the system 10 reads the voltage and current of the battery cell 20 through the electricity meter 50, determines the internal resistance of the battery cell 10 and the corresponding maximum chargeable current according to the read voltage and current of the battery cell 10, and takes the chargeable current Io of the smaller of the preset maximum chargeable current corresponding to the initial voltage of the battery cell and the maximum chargeable current corresponding to the internal resistance;
step 312, the system 10 informs the charging module to adjust the charging current to the chargeable current Io;
step 314, system 10 periodically reads fuel gauge 50 and obtains the voltage of battery cell 20;
step 316, when detecting that the voltage of the battery cell 20 reaches the corresponding battery cell threshold voltage, the system 10 informs the charging module to adjust the constant current charging current, and returns to step 314;
In step 318, the charging module charges the battery cells 20 in a normal charging manner.
In the embodiment of the present application, after the fast charging charger is inserted, the charging voltage is directly raised by the chargeable current Io when the fast charging module 40 is started for charging, so that the voltage to which the battery cell 20 jumps in a period can be ensured not to exceed the battery cell threshold voltage corresponding to the initial voltage of the battery cell 20.
As shown in fig. 7, the change of the fast charge current of the battery cell 20 and the voltage of the battery cell 20 during the fast charge process is illustrated. And calculating the chargeable current Io of the smaller of the preset maximum chargeable current corresponding to the initial voltage of the battery cell and the maximum chargeable current corresponding to the internal resistance in the t1 time period, and after calculating the chargeable current Io, directly jumping the chargeable current from 0 to the chargeable current Io, and carrying out constant-current charging, wherein the voltage of the corresponding battery cell 20 is also increased.
As can be seen from uc=4+10×15=4.15v, in theory, when the charging current is stepped up to 10A, the cell voltage uc=4.15v is detected, i.e. one of the cell threshold voltages 4.15V of the cell 20 is reached. At this time, 200mA may be further lowered on the basis of 10A, and charged with 9.8A as the first charging current. Uc=4v+9.8a×15mohm= 4.147V, the cell threshold voltage is not exceeded by 4.15V.
As shown in fig. 7, after the rechargeable current Io is charged for a certain period of time, the voltage of the battery cell 20 exceeds the battery cell threshold voltage by 4.15V, and the charging current drops to the preset maximum chargeable current corresponding to the current battery cell voltage and then is used for step fast charging.
Assuming the present charge current is 9.8A, then the cell voltage is detected to exceed 4.15V in the next cycle, and the fast charge module 40 needs to follow the maximum chargeable current corresponding to a cell threshold voltage of 4.5V less than 9.8A. Taking the example that the maximum chargeable current corresponding to the battery cell threshold voltage of 4.15V is 20A, the maximum chargeable current corresponding to 4.19V is 14A, the maximum chargeable current corresponding to 4.43V is 10A, and the maximum chargeable current corresponding to 4.5V is 8A, the maximum chargeable current smaller than 9.8A is needed to be selected from the maximum chargeable current, namely, the constant-current quick charging is performed by 8A.
In the embodiment of the application, the voltage and the current of the battery core are detected to obtain a detection result, the first charging current is determined according to the detection result and is provided for the battery core by the charging module, the first charging voltage reached by the battery core in at least one period by the first charging current is not higher than the corresponding battery core threshold voltage of the battery core before the battery core is powered by the charging module, so that safer and finer quick charging control is provided, the voltage of the battery core in the quick charging process is not higher than the threshold voltage of the battery core standard and the withstand voltage of other devices of the system, and the battery safety and the withstand voltage risk of other devices of the system caused by the second-level high voltage of the battery core when the charger is inserted for quick charging are avoided, especially after the battery core is aged.
Optionally, as shown in fig. 8, the embodiment of the present application further provides an electronic device 900, which includes a processor 940 and a memory 920, where the memory 920 stores a program or an instruction that can be executed on the processor 940, and the program or the instruction implements each step of the embodiment of the quick charging method when executed by the processor 940, and the steps achieve the same technical effects, so that repetition is avoided, and no further description is given here.
The electronic device in the embodiment of the application includes the mobile electronic device and the non-mobile electronic device.
Fig. 9 is a schematic hardware structure of an electronic device implementing an embodiment of the present application.
The electronic device 1000 includes, but is not limited to: radio frequency unit 1001, network module 1002, audio output unit 1003, input unit 1004, sensor 1005, display unit 1006, user input unit 1007, interface unit 1008, memory 1009, and processor 1010.
Those skilled in the art will appreciate that the electronic device 1000 may also include a power source (e.g., a battery) for powering the various components, which may be logically connected to the processor 1010 by a power management system to perform functions such as managing charge, discharge, and power consumption by the power management system. The electronic device structure shown in fig. 9 does not constitute a limitation of the electronic device, and the electronic device may include more or less components than shown, or may combine certain components, or may be arranged in different components, which are not described in detail herein.
The processor 1010 is configured to detect a voltage and a current of the battery cell, and obtain a detection result; determining a first charging current according to the detection result; providing the first charging current to the battery cell through a charging module; the battery core comprises a plurality of battery core threshold voltages, and the battery core corresponds to a plurality of different preset maximum chargeable currents respectively; the first charging current is used for enabling the battery cell to reach a first charging voltage in at least one period; the first charging voltage does not exceed a target cell threshold voltage corresponding to the cell before the charging module supplies power; the one period corresponds to a time from the detection result to the charging module supplying the first charging current.
Optionally, a processor 1010 is configured to obtain an initial voltage of the battery cell detected before the charging module is powered; determining the target cell threshold voltage corresponding to the cell according to the initial voltage; the charging module is controlled to be increased in steps at preset current intervals from zero, so that a second charging current is obtained and power is supplied to the battery cell; acquiring the detection result; and according to the detection result, taking the second charging current as the first charging current under the condition that the second charging current enables the charging voltage which can be achieved by the battery cell to be smaller than the target battery cell threshold voltage.
Optionally, the processor 1010 is further configured to reduce the second charging current by a preset magnitude to obtain the first charging current when the second charging current makes the achievable charging voltage of the battery cell not less than the target battery cell threshold voltage according to the detection result.
Optionally, a processor 1010 is configured to obtain an initial voltage of the battery cell detected before the charging module is powered; determining the target cell threshold voltage corresponding to the cell according to the initial voltage; determining the internal resistance of the battery cell; determining a first maximum chargeable current corresponding to the battery cell according to the initial voltage, the target battery cell threshold voltage and the internal resistance of the battery cell; and determining the first charging current according to the smaller of the first maximum chargeable current and the preset maximum chargeable current corresponding to the target cell threshold voltage.
Optionally, a processor 1010 is configured to obtain a first voltage and a first current of the detected battery cell when the charging module simultaneously supplies power to the battery cell and a system load; acquiring a second voltage and a second current of the detected battery cell under the condition that the charging module only supplies power to the system module, wherein the second voltage is equal to the initial voltage; and determining the internal resistance of the battery cell according to the first voltage, the first current, the second voltage and the second current.
Optionally, the processor 1010 is configured to determine the internal resistance of the battery cell according to the following formula, rc= (U2-U1)/(I2-I1);
wherein Rc represents the internal resistance of the battery cell, U1 represents the first voltage, I1 represents the first current, U2 represents the second voltage, and I2 represents the second current.
Optionally, the processor 1010 is configured to determine the first maximum chargeable current, imax= (Uc-U2)/Rc according to the following formula;
wherein Imax represents the first maximum chargeable current and Uc represents the target cell threshold voltage.
Optionally, the processor 1010 is further configured to:
acquiring the detection result in the process that the charging module provides the first charging current for the battery cell;
and according to the detection result, reducing the first charging current to a first preset maximum chargeable current under the condition that the first charging current enables the charging voltage which can be achieved by the battery core to be larger than the target battery core threshold voltage, wherein the first preset maximum chargeable current is the maximum value of all preset maximum chargeable currents which are smaller than the first charging current in the plurality of different preset maximum chargeable currents.
In the embodiment of the application, the voltage and the current of the battery core are detected to obtain a detection result, the first charging current is determined according to the detection result and is provided for the battery core by the charging module, the first charging voltage reached by the battery core in at least one period by the first charging current is not higher than the corresponding battery core threshold voltage of the battery core before the battery core is powered by the charging module, so that safer and finer quick charging control is provided, the voltage of the battery core in the quick charging process is not higher than the threshold voltage of the battery core standard and the withstand voltage of other devices of the system, and the battery safety and the withstand voltage risk of other devices of the system caused by the second-level high voltage of the battery core when the charger is inserted for quick charging are avoided, especially after the battery core is aged.
It should be appreciated that in an embodiment of the present application, the input unit 1004 may include a graphics processor (Graphics Processing Unit, GPU) 10041 and a microphone 10042, and the graphics processor 10041 processes image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 1006 may include a display panel 10061, and the display panel 10061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1007 includes at least one of a touch panel 10071 and other input devices 10072. The touch panel 10071 is also referred to as a touch screen. The touch panel 10071 can include two portions, a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.
The memory 1009 may be used to store software programs as well as various data. The memory 1009 may mainly include a first memory area storing programs or instructions and a second memory area storing data, wherein the first memory area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 1009 may include volatile memory or nonvolatile memory, or the memory 1009 may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). Memory 1009 in embodiments of the application includes, but is not limited to, these and any other suitable types of memory.
The processor 1010 may include one or more processing units; optionally, the processor 1010 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, and the like, and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 1010.
The embodiment of the application also provides a readable storage medium, on which a program or an instruction is stored, which when executed by a processor, implements each process of the above embodiment of the quick charging method, and can achieve the same technical effects, so that repetition is avoided, and no further description is given here.
Wherein the processor is a processor in the electronic device described in the above embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc.
The embodiment of the application further provides a chip, which comprises a processor and a communication interface, wherein the communication interface is coupled with the processor, and the processor is used for running programs or instructions to realize the processes of the embodiment of the quick charging method, and the same technical effects can be achieved, so that repetition is avoided, and the description is omitted here.
It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, chip systems, or system-on-chip chips, etc.
Embodiments of the present application provide a computer program product stored in a storage medium, where the program product is executed by at least one processor to implement the respective processes of the above-described embodiment of the fast charging method, and achieve the same technical effects, and for avoiding repetition, a detailed description is omitted herein.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method according to the embodiments of the present application.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.
Claims (12)
1. A quick charge method, comprising:
detecting the voltage and the current of the battery cell to obtain a detection result;
determining a first charging current according to the detection result;
a charging module provides the first charging current to the battery cell;
the battery core comprises a plurality of battery core threshold voltages, and the battery core corresponds to a plurality of different preset maximum chargeable currents respectively; the first charging current is used for enabling the battery cell to reach a first charging voltage in at least one period; the first charging voltage does not exceed a target cell threshold voltage corresponding to the cell before the charging module supplies power; the one period corresponds to a time from the detection result to the charging module supplying the first charging current.
2. The method of claim 1, wherein determining the first charging current based on the detection result comprises:
acquiring an initial voltage of the battery cell detected before the charging module supplies power;
determining the target cell threshold voltage corresponding to the cell according to the initial voltage;
the charging module is controlled to be increased in steps at preset current intervals from zero, so that a second charging current is obtained and power is supplied to the battery cell;
Acquiring the detection result;
and according to the detection result, taking the second charging current as the first charging current under the condition that the second charging current enables the charging voltage which can be achieved by the battery cell to be smaller than the target battery cell threshold voltage.
3. The method of claim 2, wherein determining the first charging current based on the detection result further comprises:
and according to the detection result, under the condition that the second charging current enables the charging voltage which can be achieved by the battery cell to be not smaller than the target battery cell threshold voltage, the first charging current is obtained after the second charging current is reduced by a preset magnitude.
4. A method according to claim 3, wherein the preset magnitude is 20% -30% of the preset current interval.
5. The method according to any one of claims 2 to 4, wherein the preset current interval is 1-2A.
6. The method of claim 1, wherein determining the first charging current based on the detection result comprises:
acquiring an initial voltage of the battery cell detected before the charging module supplies power;
Determining the target cell threshold voltage corresponding to the cell according to the initial voltage;
determining the internal resistance of the battery cell;
determining a first maximum chargeable current corresponding to the battery cell according to the initial voltage, the target battery cell threshold voltage and the internal resistance of the battery cell;
and determining the first charging current according to the smaller of the first maximum chargeable current and the preset maximum chargeable current corresponding to the target cell threshold voltage.
7. The method of claim 6, wherein determining the internal resistance of the cell comprises:
acquiring a first voltage and a first current of the detected battery cell when the charging module supplies power to the battery cell and a system load at the same time;
acquiring a second voltage and a second current of the detected battery cell under the condition that the charging module only supplies power to the system module, wherein the second voltage is equal to the initial voltage;
and determining the internal resistance of the battery cell according to the first voltage, the first current, the second voltage and the second current.
8. The circuit of claim 7, wherein determining the internal resistance of the cell from the first voltage, the first current, the second voltage, and the second current comprises:
Determining the internal resistance of the battery cell according to the following formula, wherein Rc= (U2-U1)/(I2-I1);
wherein Rc represents the internal resistance of the battery cell, U1 represents the first voltage, I1 represents the first current, U2 represents the second voltage, and I2 represents the second current.
9. The circuit of claim 8, wherein determining a first maximum chargeable current for the cell based on the initial voltage, the target cell threshold voltage, and the internal resistance of the cell comprises:
determining the first maximum chargeable current according to the following formula imax= (Uc-U2)/Rc;
wherein Imax represents the first maximum chargeable current and Uc represents the target cell threshold voltage.
10. The method as recited in claim 1, further comprising:
acquiring the detection result in the process that the charging module provides the first charging current for the battery cell;
and according to the detection result, reducing the first charging current to a first preset maximum chargeable current under the condition that the first charging current enables the charging voltage which can be achieved by the battery core to be larger than the target battery core threshold voltage, wherein the first preset maximum chargeable current is the maximum value of all preset maximum chargeable currents which are smaller than the first charging current in the plurality of different preset maximum chargeable currents.
11. An electronic device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the fast charge method of any one of claims 1-10.
12. A readable storage medium, characterized in that the readable storage medium has stored thereon a program or instructions which, when executed by a processor, implement the steps of the fast charge method according to any of claims 1-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310797165.5A CN116865385A (en) | 2023-06-29 | 2023-06-29 | Quick charge method, electronic device, and readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310797165.5A CN116865385A (en) | 2023-06-29 | 2023-06-29 | Quick charge method, electronic device, and readable storage medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116865385A true CN116865385A (en) | 2023-10-10 |
Family
ID=88229845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310797165.5A Pending CN116865385A (en) | 2023-06-29 | 2023-06-29 | Quick charge method, electronic device, and readable storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116865385A (en) |
-
2023
- 2023-06-29 CN CN202310797165.5A patent/CN116865385A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3349322B1 (en) | Charging method, charging device and terminal | |
| US20140360512A1 (en) | Charging method of electronic cigarettes and electronic cigarette box | |
| US8030902B2 (en) | Method for charging battery module in multiple stages | |
| TWI584554B (en) | Temperature-controlled power supply system and method | |
| US20170310122A1 (en) | Charging apparatus and charging control circuit thereof and charging control method | |
| US20150121112A1 (en) | Method for adjusting shutdown threshold voltage, startup method, and electronic devices thereof | |
| CN104765396B (en) | Shutdown voltage dynamic adjusting method and the system of adjustment based on mobile terminal | |
| CN111082487B (en) | Charging control method and device and electronic equipment | |
| EP2651005A2 (en) | Battery charging method and mobile terminal | |
| US10411491B2 (en) | Charging method and electronic device using the same | |
| CN114268153B (en) | Charge control circuit, charge control method, charge control device and storage medium | |
| US9929582B2 (en) | Adaptive charge current for a battery | |
| US8896269B2 (en) | Battery management device and portable computer | |
| US20140354050A1 (en) | Power bank and control method for supplying power | |
| CN116865385A (en) | Quick charge method, electronic device, and readable storage medium | |
| CN111969678B (en) | High-pass platform based terminal quick charging method, device, equipment and storage medium | |
| CN104901358A (en) | Power supply circuit, power supply method and terminal | |
| CN115864589A (en) | Charging control method, device, circuit and electronic equipment | |
| US10608464B2 (en) | Electronic apparatus and charging control method using plurality of power sources therefor | |
| CN117335512A (en) | Charging and discharging circuit, charging and discharging battery and electronic equipment | |
| CN107611473A (en) | A kind of lithium ion battery and its method, the system for improving charging rate | |
| JP7223605B2 (en) | Power supply device, power supply method, program | |
| CN115441526A (en) | Charging control method and device, electronic equipment and computer readable storage medium | |
| CN119650912A (en) | Battery charging method, device, equipment, medium and product | |
| CN117411148B (en) | Charging method, electronic equipment and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |