CN109546244B - Quick charging method, device, equipment and storage medium - Google Patents
Quick charging method, device, equipment and storage medium Download PDFInfo
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- CN109546244B CN109546244B CN201810930005.2A CN201810930005A CN109546244B CN 109546244 B CN109546244 B CN 109546244B CN 201810930005 A CN201810930005 A CN 201810930005A CN 109546244 B CN109546244 B CN 109546244B
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- 238000007600 charging Methods 0.000 title claims abstract description 308
- 238000000034 method Methods 0.000 title claims abstract description 66
- 238000010280 constant potential charging Methods 0.000 claims abstract description 29
- 238000010277 constant-current charging Methods 0.000 claims description 26
- 238000005070 sampling Methods 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 7
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- 238000010586 diagram Methods 0.000 description 10
- 239000003990 capacitor Substances 0.000 description 6
- 238000004146 energy storage Methods 0.000 description 6
- 229910052744 lithium Inorganic materials 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical group [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- JDZCKJOXGCMJGS-UHFFFAOYSA-N [Li].[S] Chemical compound [Li].[S] JDZCKJOXGCMJGS-UHFFFAOYSA-N 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/448—End of discharge regulating measures
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- H02J7/0077—
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention discloses a quick charging method, a quick charging device, equipment and a storage medium, wherein the real-time voltage of a rechargeable battery is acquired; if the real-time voltage is greater than or equal to the initial voltage of the constant-voltage charging stage, the charging voltage is adjusted according to the real-time voltage, then the charging current is determined according to the charging voltage and the real-time voltage, and the charging current is used for charging the rechargeable battery.
Description
Technical Field
The embodiment of the invention relates to the technical field of charging, in particular to a quick charging method, a quick charging device, quick charging equipment and a storage medium.
Background
At present, rechargeable battery products are widely applied in daily life, and whether the batteries can be charged quickly, safely and reliably is crucial.
Fig. 1 is a schematic diagram of a battery charging process in the prior art, and as shown in fig. 1, the battery charging process is composed of three stages, namely, trickle, constant current and constant voltage. Trickle charging is a charging process that is only performed when the voltage is below a certain value, in order to activate the battery with a small charging current, ensuring battery life and reliability, so that the parameters of the trickle charging phase cannot be adjusted. The constant current and the constant voltage are the necessary stages for charging each battery and are also the key factors for determining the charging time of the battery. The charge of the battery is somewhat related to the open circuit voltage across the battery, and when the charge is l 00%, the open circuit voltage is the battery charge limit voltage, which is also the full charge voltage of the battery. Therefore, in the final stage of charging the battery, the charging mode is changed from a constant-current charging mode to a constant-voltage charging mode, and the charging current is reduced to ensure that the open-circuit voltage of the battery does not exceed the full-current voltage. As shown in fig. 1, the constant current charging phase is the phase in which the battery is charged at the fastest speed because the current is the largest in this phase. In the constant voltage charging stage, the charging voltage is continuously close to the full-charge voltage, the charging current is gradually reduced, and when the charging current is less than a certain threshold value, the charging process is terminated. The charging current is gradually reduced in the constant voltage stage, so that the charging time is relatively long, which accounts for two thirds of the whole charging time, and further the charging efficiency is relatively low.
Disclosure of Invention
The invention provides a quick charging method, a quick charging device, equipment and a storage medium, which are used for increasing the charging current in a constant voltage stage, reducing the charging time and accelerating the charging efficiency.
In a first aspect, an embodiment of the present invention provides a fast charging method, where the method includes:
acquiring the real-time voltage of the rechargeable battery;
if the real-time voltage is greater than or equal to a first set voltage, adjusting the charging voltage according to the real-time voltage, wherein the first set voltage value is the initial voltage of the constant-voltage charging stage;
and determining a charging current according to the charging voltage and the real-time voltage, and charging the rechargeable battery by using the charging current.
Further, the adjusting the charging voltage according to the real-time voltage includes:
determining a target charging voltage according to the difference value of the real-time voltage and a preset voltage;
adjusting the charging voltage to the target charging voltage.
Further, if the real-time voltage is greater than or equal to a first set voltage, before adjusting the charging voltage according to the real-time voltage, the method further includes:
and judging whether the real-time voltage is greater than or equal to the first set voltage.
Preferably, the first setting voltage is a digital signal,
correspondingly, the determining whether the real-time voltage is greater than or equal to the first set voltage includes:
performing analog-to-digital conversion on the real-time voltage to obtain a real-time digital voltage;
and judging whether the real-time digital voltage is greater than or equal to the first set voltage.
Preferably, the first setting voltage is an analog signal, and the first setting voltage is output by a clamping circuit;
correspondingly, the determining whether the real-time voltage is greater than or equal to the first set voltage includes:
inputting the real-time voltage and the first set voltage to a voltage comparator;
and judging whether the real-time voltage is greater than or equal to the first set voltage according to the output result of the voltage comparator.
Further, after the charging the rechargeable battery with the charging current, the method further includes:
and if the real-time voltage reaches a charging voltage threshold value, stopping charging the rechargeable battery.
Further, the method further comprises:
if the real-time voltage is less than a second set voltage, determining that the rechargeable battery is in a trickle charge stage, wherein the second set voltage is less than the first set voltage;
and if the real-time voltage is greater than or equal to the second set voltage and less than the first set voltage, determining that the rechargeable battery is in a constant current charging stage.
In a second aspect, an embodiment of the present invention further provides a quick charging device, including:
the acquisition module is used for acquiring the real-time voltage of the rechargeable battery;
the adjusting module is used for adjusting the charging voltage according to the real-time voltage if the real-time voltage is greater than or equal to a first set voltage, wherein the first set voltage is the initial voltage of a constant-voltage charging stage;
and the charging module is used for determining charging current according to the charging voltage and the real-time voltage and charging the rechargeable battery by using the charging current.
In a third aspect, an embodiment of the present invention further provides an apparatus, where the apparatus includes:
one or more processors;
a memory for storing one or more programs;
the voltage sampling device is used for collecting the real-time voltage of the rechargeable battery;
when executed by the one or more processors, cause the one or more processors to implement the fast charging method as described in the first aspect.
In a fourth aspect, embodiments of the present invention also provide a storage medium containing computer-executable instructions for performing the fast charging method as described in the first aspect when executed by a computer processor.
According to the rapid charging method, the rapid charging device, the rapid charging equipment and the rapid charging storage medium, the real-time voltage of the rechargeable battery is obtained; if the real-time voltage is greater than or equal to the initial voltage of the constant-voltage charging stage, the charging voltage is adjusted according to the real-time voltage, then the charging current is determined according to the charging voltage and the real-time voltage, and the charging current is used for charging the rechargeable battery.
Drawings
FIG. 1 is a schematic diagram of a prior art battery charging process;
fig. 2 is a flowchart of a fast charging method according to an embodiment of the present invention;
fig. 3 is a flowchart of a fast charging method according to a second embodiment of the present invention;
fig. 3a is a schematic structural diagram of a fast charging circuit according to a second embodiment of the present invention;
fig. 3b is a schematic diagram of a voltage curve of fast charging according to a second embodiment of the present invention;
fig. 4 is a schematic structural diagram of a fast charging device according to a third embodiment of the present invention;
fig. 5 is a schematic structural diagram of an apparatus according to a fourth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 2 is a flowchart of a fast charging method according to an embodiment of the present invention, where the embodiment is applicable to a case of charging a battery, the method may be executed by a fast charging apparatus, and the fast charging apparatus may be implemented by software and/or hardware, as shown in fig. 2, the fast charging method mainly includes the following steps:
and S110, acquiring the real-time voltage of the rechargeable battery.
In this embodiment, the rechargeable battery is a rechargeable battery with a limited number of charges. Preferably, the rechargeable battery is a lithium battery. Further, the lithium battery may be any one of a lithium ion secondary battery, a lithium metal secondary battery, a lithium sulfur secondary battery, or a lithium air secondary battery. Furthermore, the rechargeable battery can be a single rechargeable battery, a series-connected battery module of a plurality of rechargeable batteries, or a parallel-connected battery module of a plurality of rechargeable batteries. The real-time voltage of the rechargeable battery is the real-time voltage between the anode and the cathode of the rechargeable battery in the charging process.
The step of acquiring the real-time voltage of the rechargeable battery refers to acquiring the voltage between the anode and the cathode of the rechargeable battery in real time through a voltage sampling device. Because the equivalent circuit of the rechargeable battery is the series connection of the internal resistor and the energy storage capacitor, the energy storage capacitor is a device for storing the energy of the battery. In the charging process, the charging equipment continuously provides current to the energy storage capacitor of the rechargeable battery, and the voltage between the anode and the cathode of the rechargeable battery is continuously changed due to the continuous change of the voltage at the two ends of the energy storage capacitor. Therefore, the current charging condition can be confirmed by the real-time voltage of the rechargeable battery.
And S120, if the real-time voltage is greater than or equal to a first set voltage, adjusting the charging voltage according to the real-time voltage, wherein the first set voltage is the initial voltage of the constant-voltage charging stage.
In this embodiment, the first setting voltage is the initial voltage of the constant voltage charging phase, and the constant voltage charging phase is a charging phase in which the real-time voltage of the rechargeable battery is close to the full-charge voltage of the rechargeable battery, but does not reach the full-charge voltage. And confirming to enter a constant voltage charging stage when the real-time voltage reaches the first set voltage. The charging voltage is a voltage value output to the rechargeable battery by the charging equipment, and when the charging equipment charges the rechargeable battery, the charging voltage can be acquired in real time. Further, the charging voltage is adjustable.
In the constant-voltage charging stage, the voltage drop between the charging voltage of the charging equipment and the real-time voltage of the rechargeable battery is reduced, so that the charging current is gradually reduced, the charging time is relatively long, and the charging efficiency is relatively low. Therefore, in this embodiment, whether the real-time voltage of the rechargeable battery is greater than the first setting voltage is determined by a predetermined method, and if the real-time voltage is greater than or equal to the first setting voltage, the charging voltage is increased according to the real-time voltage. Further, whether the real-time voltage of the rechargeable battery is greater than the first set voltage or not can be judged by adopting a digital signal comparison mode, and whether the real-time voltage of the rechargeable battery is greater than the first set voltage or not can also be judged by adopting an analog signal comparison mode. It should be noted that the comparison method of the two signals can be selected according to the needs of the user or the actual situation of the rechargeable battery.
Further, when the charging voltage is adjusted, the charging voltage is adjusted according to the preset voltage difference value and the real-time voltage, so that the charging voltage of the charging equipment is the sum of the real-time voltage and the preset voltage difference value. And the preset voltage difference value is larger than a voltage drop value between the charging voltage before adjustment and the real-time voltage. Further, the preset voltage difference value may be determined according to a full-charge voltage of the rechargeable battery. In daily life and work, the full-charge voltage of the rechargeable battery is usually several fixed voltage values, and therefore, the preset voltage difference value that can be determined according to the full-charge voltage of the rechargeable battery is usually also several set values. Illustratively, when the full-charge voltage of the rechargeable battery is 4.2V, the preset voltage difference is 0.7V.
Optionally, if the real-time voltage is less than the first set voltage, determining whether the real-time voltage is less than a constant-current charging threshold, and if the real-time voltage is less than the constant-current charging threshold, determining that the rechargeable battery is in a trickle charging stage, where the trickle charging stage is to activate the battery with a small charging current. And if the real-time voltage is greater than the constant-current charging threshold and less than a first set voltage, determining that the rechargeable battery is in a constant-current charging stage, wherein the constant-current charging stage is the stage with the highest battery charging speed, and the charging current in the constant-current charging stage is the maximum. Further, the constant current charging threshold is smaller than the first set voltage.
And S130, determining a charging current according to the charging voltage and the real-time voltage, and charging the rechargeable battery by using the charging current.
In this embodiment, the charging current is a current input to the rechargeable battery for charging the rechargeable battery. Charging the rechargeable battery means inputting a charging current into an energy storage capacitor of the rechargeable battery, so that the energy storage capacitor in the rechargeable battery stores energy.
The embodiment obtains the real-time voltage of the rechargeable battery; if the real-time voltage is greater than or equal to the initial voltage of the constant-voltage charging stage, the charging voltage is adjusted according to the real-time voltage, then the charging current is determined according to the charging voltage and the real-time voltage, and the charging current is used for charging the rechargeable battery. The problems of long charging time and low charging efficiency caused by reduction of the charging current in the constant voltage stage are solved, the charging current in the constant voltage stage is increased, the charging time is reduced, and the charging efficiency is accelerated.
Example two
Fig. 3 is a flowchart of a fast charging method according to a second embodiment of the present invention; the present embodiment is applicable to the case of charging a battery, and the present embodiment further optimizes a fast charging method, as shown in fig. 3, the optimized fast charging method mainly includes the following steps:
and S210, acquiring the real-time voltage of the rechargeable battery.
S220, judging whether the real-time voltage is larger than or equal to a first set voltage.
In this embodiment, whether the real-time voltage of the rechargeable battery is greater than the first setting voltage may be compared by using a digital signal comparison method, or may be compared by using an analog signal comparison method. It should be noted that the comparison method of the two signals can be selected according to the needs of the user or the actual situation of the rechargeable battery.
In this embodiment, two methods for determining the magnitudes of the real-time voltage and the first setting voltage are provided, one is to implement the determination of the magnitudes of the real-time voltage and the first setting voltage through an analog circuit, and the other is to implement the determination of the magnitudes of the real-time voltage and the first setting voltage through a digital circuit.
Further, the analog circuit implementation manner includes: the first setting voltage is an analog signal and is output by the clamping circuit; determining whether the real-time voltage is greater than or equal to a first set voltage comprises: inputting the real-time voltage and the first set voltage to a voltage comparator; and judging whether the real-time voltage is greater than or equal to a first set voltage according to the output result of the voltage comparator.
Fig. 3a is a schematic structural diagram of a fast charging circuit according to a second embodiment of the present invention. As shown in fig. 3a, the core of the whole fast charging circuit is a step-down DC-DC system with a feedback loop, and its main structure includes: a switching circuit 201, a clamping circuit 202, a sampling circuit 203, a voltage comparator 204, and a rechargeable battery 205. The switch circuit 201 comprises a PWM controller, a power tube Q1 and an inductor L21, the PWM controller is implemented by using an IC1 chip, a pin 6 and a pin 7 of the IC1 chip are input terminals of the fast charging circuit, preferably, the pin 6 is connected to a mains voltage, and the pin 7 is grounded. Pin 9 of the IC1 chip is connected to the gate of the power transistor Q1, pin 8 of the IC1 chip is connected to the drain of the power transistor Q1 and the first terminal of the inductor L21, respectively, and the second terminal of the inductor L21 is connected to the positive electrode of the rechargeable battery 205. The clamp circuit 202 includes a resistor R2, a resistor R3, and a clamp diode Dz. The output of the clamp 202 is connected to the inverting input 3 of the voltage comparator 204. By adjusting the sizes of the resistor R2 and the resistor R3, the voltage value at the output end of the clamping circuit 202 can be controlled. The sampling circuit 203 comprises a sampling resistor R1, the sampling resistor R1 is respectively connected with the positive pole of the rechargeable battery and the positive input end 1 of the voltage comparator 204, the output end 4 of the voltage comparator 204 is connected with the pin 10 of the PWM controller, the pin 2 of the voltage comparator 204 is grounded, and the pin 5 is connected with the output voltage of the inductor L21 and used for supplying power to the comparator.
The principle of charging the rechargeable battery by the charging equipment is as follows: the PWM controller drives the power transistor Q1 to turn on and off, generates a pulse width modulation wave, further generates a charging voltage meeting the requirement of the rechargeable battery, and outputs the charging voltage to the inductor L21, and the charging voltage passes through the inductor L21 and then is output to the positive electrode of the rechargeable battery to charge the battery.
The principle of the charging equipment for rapidly charging the rechargeable battery is as follows: the sampling resistor R1 collects the real-time voltage Vb between the positive electrode and the negative electrode of the rechargeable battery 205, the collected real-time voltage Vb is input to the positive input end 1 of the voltage comparator 204, the reverse input end 3 of the voltage comparator 204 is connected with the first set voltage output by the clamping circuit 202, when the real-time voltage Vb is larger than the first set voltage, the output end 4 of the voltage comparator 204 outputs a high level signal and feeds the high level signal back to the pin 10 of the PWM controller, when the PWM controller receives the high level signal of the pin 10, the duty ratio of the modulation signal of the pin 9 is increased, the conduction time of the power tube Q1 is increased, and the voltage value output to the inductor L21 is further increased.
Further, the digital circuit implementation comprises: the first setting voltage is a digital signal, and correspondingly, the step of judging whether the real-time voltage is greater than or equal to the first setting voltage comprises the steps of: performing analog-to-digital conversion on the real-time voltage to obtain a real-time digital voltage; and judging whether the real-time digital voltage is greater than or equal to a first set voltage.
Further, the voltage sampling resistor collects real-time voltage between the anode and the cathode of the rechargeable battery, and inputs the real-time voltage to an Analog-to-Digital (AD) converter to obtain real-time Digital voltage; and judging whether the real-time digital voltage is greater than or equal to a first set voltage through a preset program, and controlling the PWM controller to increase the duty ratio of a modulation signal and increase the conduction time of the power tube when the digital voltage is greater than or equal to the first set voltage so as to improve the charging voltage of the charging equipment.
Further, a digital judgment method is provided,
if(Vb>＝Vz&&Vb<＝Vm)
{Vcharge＝Vb+Vc；}
vcharge is a charging voltage provided by the charging equipment, Vz is a first set voltage, namely an initial voltage of a constant voltage charging stage, Vb is a real-time voltage of the rechargeable battery, Vm is a full-charge voltage of the rechargeable battery, and Vc is a preset voltage difference value. With the real-time increase of the real-time voltage Vb of the rechargeable battery, the charging voltage Vcharge provided by the charging equipment continuously increases.
And S230, if the real-time voltage is greater than or equal to the first set voltage, determining a target charging voltage according to the real-time voltage and a preset voltage difference value.
In this embodiment, the target charging voltage is a voltage that the charging device needs to be raised to enable the rechargeable battery to be charged quickly, where the target charging voltage is determined by a difference between a real-time voltage and a preset voltage.
Further, the real-time voltage and the preset voltage difference value are added to obtain a target charging voltage. The preset voltage difference is a voltage value required to be maintained between the charging voltage and the real-time voltage in order to realize rapid charging. Further, the preset voltage difference is larger than a voltage drop value between the charging voltage before adjustment and the real-time voltage. The preset voltage difference value can be obtained according to long-term work experience or multiple experiments of workers, and can also be determined according to the full-charge voltage of the rechargeable battery and the initial voltage of the constant-voltage charging stage. In this embodiment, the method for obtaining the preset voltage difference is not limited, and a user may adopt various methods for obtaining the preset voltage difference as needed.
And S240, adjusting the charging voltage to the target charging voltage.
In the present embodiment, the charging voltage refers to a current charging voltage provided by the charging device.
Adjusting the charging voltage to the target charging voltage refers to increasing a current charging voltage provided by the charging device to the target charging voltage. The method comprises the following steps: and controlling the PWM controller to increase the duty ratio of the modulation signal, increase the on-time of the power tube, reduce the off-time of the power tube and further improve the charging voltage to the target charging voltage.
And S250, determining a charging current according to the charging voltage and the real-time voltage, and charging the rechargeable battery by using the charging current. And S260, stopping charging the rechargeable battery if the real-time voltage reaches the charging voltage threshold value.
Specifically, after entering the constant voltage charging stage, the real-time voltage of the rechargeable battery is continuously acquired, so as to judge whether the charging of the rechargeable battery is completed according to the real-time voltage.
In the present embodiment, the charging voltage threshold refers to the full charge voltage of the rechargeable battery. Stopping charging the rechargeable battery means that a preset switching device cuts off a charging loop between the charging equipment and the rechargeable battery, so that the charging equipment can not provide charging current to the rechargeable battery any more.
Further, if the real-time voltage between the positive electrode and the negative electrode of the rechargeable battery reaches the full-charge voltage of the rechargeable battery, the rechargeable battery is fully charged, and the rechargeable battery is not required to be charged, a charging loop between the charging equipment and the rechargeable battery is cut off through a preset switching device, so that the charging equipment does not provide charging current to the rechargeable battery any more, and the rechargeable battery is stopped to be charged.
Further, the one-time complete charging process comprises a trickle charging stage, a constant current charging stage and a constant voltage charging stage. Therefore, the real-time voltage of the rechargeable battery needs to be acquired in real time during the charging process, so as to determine the current charging stage according to the real-time voltage. In practical application, the method comprises the steps of obtaining a real-time voltage, determining whether the charging device is in a trickle charging stage or not according to the real-time voltage, determining whether the charging device is in a constant-current charging stage or not according to the real-time voltage after the trickle charging stage, determining whether the charging device is in a constant-voltage charging stage or not according to the real-time voltage after the constant-current charging stage, and determining whether the charging device is completely charged according to the real-time voltage after the constant-voltage charging stage. Since the determination conditions of the constant-current charging phase have been described previously, the trickle charging phase and the determination conditions of the constant-current charging phase are described below.
Specifically, the fast charging method provided in this embodiment further includes: and if the real-time voltage is less than a second set voltage, determining that the rechargeable battery is in a trickle charge stage, wherein the second set voltage is less than the first set voltage.
In this embodiment, the second setting voltage is smaller than the starting voltage of the constant voltage charging phase, and preferably, the second setting voltage is a constant current charging threshold.
And if the real-time voltage between the anode and the cathode of the rechargeable battery is smaller than the constant-current charging threshold, determining that the rechargeable battery is in a trickle charging stage, wherein the trickle charging stage is to activate the battery by using small charging current, so that the service life and the reliability of the battery are ensured. The trickle charge phase is not limited to specific charging parameters and charging process embodiments.
Further, the fast charging method provided by this embodiment further includes: and if the real-time voltage is greater than or equal to the second set voltage and less than the first set voltage, determining that the rechargeable battery is in the constant-current charging stage.
In this embodiment, if the real-time voltage between the positive electrode and the negative electrode of the rechargeable battery is greater than the constant-current charging threshold and less than the initial voltage of the constant-voltage charging stage, it is determined that the rechargeable battery is in the constant-current charging stage, which is the stage where the charging speed of the battery is the fastest, because the current in the constant-current charging stage is the largest. The trickle charge phase is not limited to specific charging parameters and charging process embodiments.
Fig. 3b is a schematic diagram of a voltage curve of fast charging according to the second embodiment of the present invention. As shown in fig. 3b, in this embodiment, the full charge voltage of the rechargeable battery is 4.2V, the initial voltage of the constant voltage charging stage is 4.05V, and the constant current charging threshold is 2.5V. V1 is a charging voltage variation curve of the charging device when the rapid charging method is used, V2 is a charging voltage variation curve of the charging device when the conventional charging method is used, V3 is a positive-negative electrode voltage variation curve of the rechargeable battery when the rapid charging is used, and V4 is a positive-negative electrode voltage variation curve of the rechargeable battery when the conventional charging method is used. T1 represents the time when the constant-current charging phase ends and the constant-voltage charging phase is entered, T2 represents the time when the rechargeable battery reaches full charge during rapid charging, and T3 represents the time when the rechargeable battery reaches full charge during normal charging.
As shown in fig. 3b, in the normal charging mode and the fast charging mode, the change curves of the voltages between the positive electrode and the negative electrode of the rechargeable battery are the same in the trickle charging phase and the constant current charging phase. When entering the constant voltage charging phase, the charging voltage V1 using the quick charging method is continuously increased as the voltage V3 between the positive and negative electrodes of the rechargeable battery is increased, and the charging of the rechargeable battery is terminated at time T2. In the conventional charging mode, since the charging voltage V2 is continuously maintained at the full-charge voltage of the rechargeable battery, the voltage drop between the charging voltage V2 of the charging device and the voltage V4 between the positive electrode and the negative electrode of the rechargeable battery is smaller, and the charging current is gradually reduced until the charging of the rechargeable battery is finished at time T3. As can be seen from fig. 3b, the time T2 is far less than the time T3, so that the technical means of rapid charging provided by this embodiment solves the problems of reduced charging current, long charging time, and low charging efficiency in the constant voltage phase, and improves the charging efficiency.
The embodiment obtains the real-time voltage of the rechargeable battery; if the real-time voltage is greater than or equal to the initial voltage of the constant-voltage charging stage, determining a target charging voltage according to the difference value between the real-time voltage and a preset voltage; the charging voltage is adjusted to the target charging voltage, the charging current is determined according to the charging voltage and the real-time voltage, and the charging current is used for charging the rechargeable battery, so that the problems of reduction of the charging current in the constant voltage stage, long charging time and low charging efficiency are solved, the charging current in the constant voltage stage is increased, the charging time is reduced, and the charging efficiency is accelerated.
EXAMPLE III
Fig. 4 is a schematic structural diagram of a fast charging device according to a third embodiment of the present invention; the present embodiment may be applicable to the case of charging a battery, wherein the apparatus may be implemented by software and/or hardware. As shown in fig. 4, the fast charging device provided by the embodiment of the present invention mainly includes the following components:
the obtaining module 310 is configured to obtain a real-time voltage of the rechargeable battery.
The adjusting module 320 is configured to adjust the charging voltage according to the real-time voltage if the real-time voltage is greater than or equal to a first set voltage, where the first set voltage is an initial voltage of a constant-voltage charging stage.
The first charging module 330 is configured to determine a charging current according to the charging voltage and the real-time voltage, and charge the rechargeable battery with the charging current.
The embodiment obtains the real-time voltage of the rechargeable battery; if the real-time voltage is greater than or equal to the initial voltage of the constant-voltage charging stage, the charging voltage is adjusted according to the real-time voltage, then the charging current is determined according to the charging voltage and the real-time voltage, and the charging current is used for charging the rechargeable battery.
Further, the adjusting module 320 includes:
the determining unit is used for determining a target charging voltage according to the real-time voltage and a preset voltage difference value;
an adjusting unit, configured to adjust the charging voltage to the target charging voltage.
Further, the apparatus further comprises: and the judging module is used for judging whether the real-time voltage is greater than or equal to the first set voltage.
Further, the first setting voltage is a digital signal,
the judging module comprises:
the conversion unit is used for carrying out analog-to-digital conversion on the real-time voltage to obtain a real-time digital voltage;
and the judging unit is used for judging whether the real-time digital voltage is greater than or equal to the first set voltage.
Further, the first setting voltage is an analog signal, and the first setting voltage is output by a clamping circuit;
the judging module comprises:
the input unit is used for inputting the real-time voltage and the first set voltage to a voltage comparator;
and the comparison unit is used for judging whether the real-time voltage is greater than or equal to the first set voltage according to the output result of the voltage comparator.
Further, the apparatus further comprises:
and the stopping module is used for stopping charging the rechargeable battery if the real-time voltage reaches a charging voltage threshold value.
Further, the apparatus further comprises:
the second charging module is used for determining that the rechargeable battery is in a trickle charging stage if the real-time voltage is smaller than a second set voltage, and the second set voltage is smaller than the first set voltage;
and the third charging module is used for determining that the rechargeable battery is in a constant current charging stage if the real-time voltage is greater than or equal to the second set voltage and less than the first set voltage.
The quick charging device provided by the embodiment of the invention can execute the quick charging method provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method.
Example four
Fig. 5 is a schematic structural diagram of an apparatus according to a fourth embodiment of the present invention, as shown in fig. 5, the apparatus includes a processor 410, a memory 420, an input device 430, an output device 440, and a voltage sampling device 450; the number of processors 410 in the device may be one or more, and one processor 410 is taken as an example in fig. 5; the processor 410, the memory 420, the input device 430, the output device 440, and the voltage sampling device 450 of the apparatus may be connected by a bus or other means, and fig. 5 illustrates the connection by a bus as an example.
The memory 420 serves as a computer-readable storage medium for storing software programs, computer-executable programs, and modules, such as program instructions/modules corresponding to the fast charging method in the embodiment of the present invention (for example, the obtaining module, the adjusting module, and the first charging module in the fast charging device). The processor 410 executes various functional applications of the device and data processing by executing software programs, instructions and modules stored in the memory 420, that is, implements the above-described fast charging method.
The memory 420 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal, and the like. Further, the memory 420 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, memory 420 may further include memory located remotely from processor 410, which may be connected to devices through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input means 430 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the apparatus. The output device 440 may include a display device such as a display screen.
The device provided by the embodiment of the invention can execute the quick charging method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.
EXAMPLE five
An embodiment of the present invention further provides a storage medium containing computer-executable instructions, which when executed by a computer processor, are configured to perform the fast charging method as implemented above, where the method includes:
acquiring the real-time voltage of the rechargeable battery;
if the real-time voltage is greater than or equal to a first set voltage, adjusting the charging voltage according to the real-time voltage, wherein the first set voltage is the initial voltage of the constant-voltage charging stage;
and determining a charging current according to the charging voltage and the real-time voltage, and charging the rechargeable battery by using the charging current.
Of course, the storage medium provided by the embodiment of the present invention contains computer-executable instructions, and the computer-executable instructions are not limited to the method operations described above, and may also perform related operations in the fast charging method provided by any embodiment of the present invention.
From the above description of the embodiments, it is obvious for those skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly, can also be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which can be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods according to the embodiments of the present invention.
It should be noted that, in the embodiment of the above-mentioned fast charging device, the included units and modules are merely divided according to functional logic, but are not limited to the above-mentioned division, as long as the corresponding functions can be realized; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (7)
1. A fast charging method, comprising:
acquiring the real-time voltage of the rechargeable battery;
judging whether the real-time voltage is greater than or equal to a first set voltage;
the first set voltage is a digital signal,
the judging whether the real-time voltage is greater than or equal to a first set voltage comprises:
performing analog-to-digital conversion on the real-time voltage to obtain a real-time digital voltage;
judging whether the real-time digital voltage is greater than or equal to the first set voltage;
the first setting voltage is an analog signal and is output by the clamping circuit;
the determining whether the real-time voltage is greater than or equal to the first set voltage includes:
inputting the real-time voltage and the first set voltage to a voltage comparator;
judging whether the real-time voltage is greater than or equal to the first set voltage according to the output result of the voltage comparator;
if the real-time voltage is greater than or equal to a first set voltage, the charging voltage is increased according to the real-time voltage, and the first set voltage is the initial voltage of the constant-voltage charging stage;
and determining a charging current according to the charging voltage and the real-time voltage, and charging the rechargeable battery by using the charging current.
2. The fast charging method of claim 1, wherein said increasing a charging voltage according to said real-time voltage comprises:
determining a target charging voltage according to the difference value of the real-time voltage and a preset voltage;
increasing the charging voltage to the target charging voltage.
3. The fast charging method according to claim 1, further comprising, after charging the rechargeable battery with the charging current:
and if the real-time voltage reaches a charging voltage threshold value, stopping charging the rechargeable battery.
4. The fast charging method according to claim 1, further comprising:
if the real-time voltage is less than a second set voltage, determining that the rechargeable battery is in a trickle charge stage, wherein the second set voltage is less than the first set voltage;
and if the real-time voltage is greater than or equal to the second set voltage and less than the first set voltage, determining that the rechargeable battery is in a constant current charging stage.
5. A quick-charging device, comprising:
the acquisition module is used for acquiring the real-time voltage of the rechargeable battery;
the judging module is used for judging whether the real-time voltage is greater than or equal to a first set voltage;
the first set voltage is a digital signal,
the judging module comprises:
the conversion unit is used for carrying out analog-to-digital conversion on the real-time voltage to obtain a real-time digital voltage;
the judging unit is used for judging whether the real-time digital voltage is greater than or equal to a first set voltage or not;
the first setting voltage is an analog signal and is output by the clamping circuit;
the judging module comprises:
the input unit is used for inputting the real-time voltage and the first set voltage to a voltage comparator;
the comparison unit is used for judging whether the real-time voltage is greater than or equal to the first set voltage according to the output result of the voltage comparator;
the adjusting module is used for increasing the charging voltage according to the real-time voltage if the real-time voltage is greater than or equal to a first set voltage, and the first set voltage value is the initial voltage of the constant-voltage charging stage;
and the first charging module is used for determining charging current according to the charging voltage and the real-time voltage and charging the rechargeable battery by using the charging current.
6. An apparatus, characterized in that the apparatus comprises:
one or more processors;
a memory for storing one or more programs;
the voltage sampling device is used for collecting the real-time voltage of the rechargeable battery;
when executed by the one or more processors, cause the one or more processors to implement the fast charging method of any one of claims 1-4.
7. A storage medium containing computer-executable instructions for performing the fast charging method of any one of claims 1-4 when executed by a computer processor.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810930005.2A CN109546244B (en) | 2018-08-15 | 2018-08-15 | Quick charging method, device, equipment and storage medium |
| PCT/CN2018/111353 WO2020034389A1 (en) | 2018-08-15 | 2018-10-23 | Fast charging method and device, apparatus, and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810930005.2A CN109546244B (en) | 2018-08-15 | 2018-08-15 | Quick charging method, device, equipment and storage medium |
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| CN109546244B true CN109546244B (en) | 2021-08-06 |
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| WO (1) | WO2020034389A1 (en) |
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| CN114156957A (en) * | 2020-09-07 | 2022-03-08 | 北京小米移动软件有限公司 | Battery charging method, device and storage medium |
| CN112332484B (en) * | 2020-10-28 | 2022-03-29 | 合肥联宝信息技术有限公司 | Battery charging control method and device, storage medium and electronic equipment |
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| CN104967201A (en) * | 2015-08-05 | 2015-10-07 | 青岛海信移动通信技术股份有限公司 | Fast-charging method, mobile terminal and power adapter capable of being charged directly |
| CN105071486A (en) * | 2015-08-26 | 2015-11-18 | 广东欧珀移动通信有限公司 | Charging prompting method and apparatus |
| CN106655396A (en) * | 2017-01-13 | 2017-05-10 | 广东欧珀移动通信有限公司 | Charging control method and device and terminal |
| CN107195997A (en) * | 2017-06-19 | 2017-09-22 | 厦门美图移动科技有限公司 | A kind of charging method, device and mobile terminal |
| CN107370219A (en) * | 2017-09-14 | 2017-11-21 | 合肥联宝信息技术有限公司 | A kind of charge control method and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI552482B (en) * | 2015-01-23 | 2016-10-01 | 華碩電腦股份有限公司 | Charging method and portable electronic apparatus using the same |
| CN106299512B (en) * | 2016-08-29 | 2019-01-18 | 北京小米移动软件有限公司 | charging method and device |
| CN106549465B (en) * | 2017-01-13 | 2019-05-17 | Oppo广东移动通信有限公司 | Charge control method, device, system and terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104967201A (en) * | 2015-08-05 | 2015-10-07 | 青岛海信移动通信技术股份有限公司 | Fast-charging method, mobile terminal and power adapter capable of being charged directly |
| CN105071486A (en) * | 2015-08-26 | 2015-11-18 | 广东欧珀移动通信有限公司 | Charging prompting method and apparatus |
| CN106655396A (en) * | 2017-01-13 | 2017-05-10 | 广东欧珀移动通信有限公司 | Charging control method and device and terminal |
| CN107195997A (en) * | 2017-06-19 | 2017-09-22 | 厦门美图移动科技有限公司 | A kind of charging method, device and mobile terminal |
| CN107370219A (en) * | 2017-09-14 | 2017-11-21 | 合肥联宝信息技术有限公司 | A kind of charge control method and electronic equipment |
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| WO2020034389A1 (en) | 2020-02-20 |
| CN109546244A (en) | 2019-03-29 |
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