WO2020259181A1

WO2020259181A1 - Quick charging method, charging apparatus, electronic device and charging system

Info

Publication number: WO2020259181A1
Application number: PCT/CN2020/092288
Authority: WO
Inventors: 谢红斌; 张俊
Original assignee: Oppo广东移动通信有限公司
Priority date: 2019-06-27
Filing date: 2020-05-26
Publication date: 2020-12-30
Also published as: CN112152271B; CN112152271A

Abstract

A quick charging method, a charging apparatus (100), an electronic deice (200) and a charging system (300). The quick charging method comprises: (S1) determining the charging current of a current constant-current charging phase, and using the determined charging current to perform constant-current charging on a battery until the next constant-current charging phase is entered; (S2) during the constant-current charging process, acquiring the current electrical quantity of the battery; (S3) when the current electrical quantity of the battery reaches a preset electrical quantity, stopping the charging of the battery.

Description

Quick charging method, charging device, electronic equipment and charging system

Priority information

This application requests the priority and rights of the patent application with the patent application number 201910565737.0 filed with the State Intellectual Property Office of China on June 27, 2019, and the full text is incorporated herein by reference.

Technical field

The embodiments of the present application relate to the field of charging technology, and more specifically, to a fast charging method, a charging device, an electronic device, and a charging system.

Background technique

In the related art, most electronic devices are charged in a constant current + constant voltage charging mode, that is, constant current charging is performed at a certain constant current, and after charging to a cut-off voltage, constant voltage charging is performed at the cut-off voltage until reaching Stop charging after a certain cut-off current.

Summary of the invention

This application aims to solve one of the technical problems in the related technology at least to a certain extent.

For this reason, the first purpose of this application is to propose a fast charging method, which dynamically adjusts the charging current to optimize the charging speed during the entire charging process and effectively improve the charging efficiency.

The second purpose of this application is to provide a charging device.

The third purpose of this application is to propose an electronic device.

The fourth purpose of this application is to propose a charging system.

The fifth purpose of this application is to provide a readable storage medium.

In order to achieve the above objective, the first aspect of the present application provides a fast charging method, which includes the following steps: determining the current charging current in the constant current charging stage, and performing constant current charging on the battery with the determined charging current until it enters The next constant current charging stage, wherein the multiple constant current charging stages in the charging process correspond to multiple charging currents, and the charging current of each constant current charging stage is determined according to the state information of the battery; During the charging process, the stored power of the battery is obtained; when the difference between the stored power of the battery and the preset power is less than or equal to the preset threshold, the battery is stopped from charging.

In order to achieve the above objective, the second aspect of the present application proposes a charging device. After the charging device is connected to an electronic device through a charging interface, the battery of the electronic device is charged through the charging interface. The charging device includes The first control circuit and the first charging circuit, wherein the first control circuit is used to determine the charging current of the current constant current charging stage, and the determined charging current is used to charge the battery with constant current through the first charging circuit , Until entering the next constant current charging stage, wherein the multiple constant current charging stages in the charging process respectively correspond to multiple charging currents, and the charging current of each constant current charging stage is determined according to the state information of the battery, And in the process of constant current charging, obtain the stored power of the battery, and stop charging the battery when the difference between the stored power of the battery and the preset power is less than or equal to the preset threshold.

In order to achieve the above-mentioned objective, an embodiment of the third aspect of the present application proposes an electronic device. After the electronic device is connected to a charging device through a charging interface, the electronic device communicates with the charging device through the charging interface. The charging interface charges the battery of the electronic device, and the electronic device includes a second control circuit and a second charging circuit, wherein the second control circuit is used to determine the charging current of the current constant current charging stage, and The determined charging current is sent to the charging device, so that the charging device performs constant current charging on the battery through the second charging circuit according to the determined charging current, until the next constant current charging stage is entered, wherein during the charging process The multiple constant current charging stages correspond to multiple charging currents, and the charging current of each constant current charging stage is determined according to the state information of the battery; the second control circuit is also used for the constant current charging process In this step, the stored power of the battery is acquired, and when the difference between the stored power of the battery and the preset power is less than or equal to a preset threshold, the charging device is controlled to stop charging the battery.

To achieve the foregoing objective, a charging system provided by an embodiment of the fourth aspect of the present application includes the charging device and the electronic equipment. After the charging device is connected to the electronic device through the charging interface, the battery of the electronic device is charged through the charging interface. The charging device includes a first control circuit and a first charging circuit, wherein the first control The circuit is used to determine the charging current of the current constant current charging stage, and the determined charging current is used to charge the battery with constant current through the first charging circuit until entering the next constant current charging stage. Each constant current charging stage corresponds to a plurality of charging currents, and the charging current of each constant current charging stage is determined according to the state information of the battery, and during the constant current charging process, the stored power of the battery is obtained, And when the difference between the stored power of the battery and the preset power is less than or equal to the preset threshold, stop charging the battery. The electronic device communicates with the charging device through the charging interface after being connected to the charging device through the charging interface, the charging device charges the battery of the electronic device through the charging interface, and the electronic device includes a first The second control circuit and the second charging circuit, wherein the second control circuit is used to determine the charging current of the current constant current charging stage, and send the determined charging current to the charging device, so that the charging device according to the determined The charging current is used to charge the battery with constant current through the second charging circuit until it enters the next constant current charging stage, wherein the multiple constant current charging stages in the charging process correspond to multiple charging currents, and each The charging current in the constant current charging stage is determined according to the state information of the battery; the second control circuit is also used to obtain the stored power of the battery during the constant current charging process, and compare the stored power to the battery When the difference between the preset power levels is less than or equal to the preset threshold, the charging device is controlled to stop charging the battery.

According to the charging system proposed in the embodiment of the present application, by dynamically adjusting the charging current, the charging speed during the entire charging process can be optimized, the charging time can be greatly shortened, and the charging efficiency can be effectively improved.

To achieve the foregoing objective, an embodiment of the fifth aspect of the present application proposes a readable storage medium that stores a fast charging program for a battery, and the program is executed by a processor to realize the fast charging method. The fast charging method includes the following steps: determining the charging current of the current constant current charging stage, and performing constant current charging on the battery with the determined charging current until entering the next constant current charging stage, wherein multiple The constant current charging stage corresponds to a plurality of charging currents, and the charging current of each constant current charging stage is determined according to the state information of the battery; in the process of constant current charging, the stored power of the battery is obtained; When the difference between the stored power of the battery and the preset power is less than or equal to the preset threshold, stop charging the battery.

The additional aspects and advantages of the embodiments of the present application will be partially given in the following description, and some will become obvious from the following description, or be understood through the practice of the present application.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present application more clearly, the following will briefly introduce the drawings that need to be used in the embodiments of the present application.

FIG. 1 is a schematic flowchart of a fast charging method according to an embodiment of the present application.

FIG. 2 is a schematic flowchart of a fast charging method according to an embodiment of the present application.

Fig. 3 is a schematic block diagram of a charging device according to an embodiment of the present application.

Fig. 4 is a block diagram of an electronic device according to an embodiment of the present application.

FIG. 5 is a schematic block diagram of a charging system according to an embodiment of the present application;

Fig. 6 is a schematic block diagram of a charging system according to a specific embodiment of the present application.

Detailed ways

The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention, but should not be construed as limiting the present invention.

The following describes the fast charging method, charging device, electronic equipment, and charging system of the battery according to the embodiments of the present invention with reference to the drawings.

Please refer to Figure 1. The fast charging method of the present application includes the following steps: determining the charging current of the current constant current charging stage, and performing constant current charging on the battery with the determined charging current until entering the next constant current charging stage, where charging The multiple constant current charging stages in the process correspond to multiple charging currents, and the charging current of each constant current charging stage is determined according to the state information of the battery; in the process of constant current charging, the stored power of the battery is obtained; when the battery is stored When the difference between the power of the battery and the preset power is less than or equal to the preset threshold, stop charging the battery.

In some embodiments, the charging current of each constant current charging stage is determined according to the state information of the battery, including: calculating the charging current of the battery according to the stored power of the battery and the preset power.

In some embodiments, obtaining the stored power of the battery includes: calculating the stored power of the battery according to the charging current and charging time of the battery.

In some embodiments, calculating the charging current of the battery according to the preset power and the power stored in the battery includes: calculating the difference between the preset power and the power stored in the battery; obtaining the product of the difference and the preset coefficient, As the charging current of the battery.

In some embodiments, when the charging time of the current constant current charging phase reaches the preset charging time of the current constant current charging phase, switch to the next constant current charging phase.

In some embodiments, when the charging voltage of the battery reaches a preset voltage, it switches to the next constant current charging stage.

3 and 6, after the charging device 100 of the embodiment of the present application is connected to the electronic device 200 through the charging interface 105, the battery 204 of the electronic device 200 is charged through the charging interface 105. The charging device 100 includes a first control circuit 101 And the first charging circuit 102, wherein the first control circuit 101 is used to determine the charging current of the current constant current charging stage, and the determined charging current is used to charge the battery with constant current through the first charging circuit 102 until entering the next The constant current charging stage, where multiple constant current charging stages in the charging process correspond to multiple charging currents, and the charging current of each constant current charging stage is determined according to the state information of the battery, and during the constant current charging process, Obtain the stored power of the battery, and stop charging the battery when the difference between the stored power of the battery and the preset power is less than or equal to the preset threshold.

Referring to FIG. 3, in some embodiments, the first control circuit 101 is also used to calculate the charging current of the battery according to the stored power of the battery and the preset power in each constant current charging stage.

Referring to FIG. 3, in some embodiments, the first control circuit 101 is also used to calculate the stored power of the battery according to the charging current and charging time of the battery.

Referring to FIG. 3, in some embodiments, the first control circuit 101 is further configured to calculate the difference between the preset power and the power stored in the battery, and obtain the product of the difference and the preset coefficient, to As the charging current of the battery.

Referring to FIG. 3, in some embodiments, the first control circuit 101 is also used to switch to the next constant current charging when the charging time of the current constant current charging phase reaches the preset charging time of the current constant current charging phase stage.

Referring to FIG. 3, in some embodiments, the first control circuit 101 is also used to switch to the next constant current charging stage when the charging voltage of the battery reaches a preset voltage.

4 and 6, the electronic device 200 communicates with the charging device 100 through the charging interface 205 after being connected to the charging device 100 through the charging interface 205, and the charging device 100 charges the battery 204 of the electronic device 200 through the charging interface 205. The device 200 includes a second control circuit 201 and a second charging circuit 202. The second control circuit 201 is used to determine the charging current of the current constant current charging stage, and send the determined charging current to the charging device so that the charging device determines The battery is charged with constant current through the second charging circuit 202 until it enters the next constant current charging stage, where the multiple constant current charging stages in the charging process correspond to multiple charging currents, and each constant current The charging current in the charging phase is determined according to the battery status information; the second control circuit 201 is also used to obtain the stored power of the battery during the constant current charging process, and the difference between the stored power of the battery and the preset power is less than When it is equal to the preset threshold, the charging device is controlled to stop charging the battery.

Referring to FIG. 4, in some embodiments, the second control circuit 201 is also used to calculate the charging current of the battery according to the stored power of the battery and the current power of the preset power battery in each constant current charging stage.

Referring to FIG. 4, in some embodiments, the second control circuit 201 is also used to calculate the stored power of the battery according to the charging current and charging time of the battery.

Referring to FIG. 4, in some embodiments, the second control circuit 201 is also used to calculate the difference between the preset power and the power stored in the battery, and obtain the product of the difference and the preset coefficient, to As the charging current of the battery.

4, in some embodiments, the second control circuit 201 is also used to switch to the next constant current charging when the charging time of the current constant current charging phase reaches the preset charging time of the current constant current charging phase stage.

Referring to FIG. 4, in some embodiments, the second control circuit 201 is also used to switch to the next constant current charging stage when the charging voltage of the battery reaches a preset voltage.

Referring to FIG. 5 and FIG. 6, the charging system 300 includes the charging device 100 of any of the foregoing embodiments and the electronic device 200 of any of the foregoing embodiments.

The readable storage medium of the embodiment of the present application stores a fast charging program of the battery, and when the program is executed by the processor, the fast charging method of any one of the above embodiments is realized.

The applicant of this application found that there is a constant voltage charging process during the charging process, and the current in the constant voltage charging process continues to decrease, causing the charging speed to gradually slow down. The longer the constant voltage charging process time, the lower the charging speed and charging efficiency, which affects User experience. In the embodiment of the application, in order to optimize the charging process, the embodiment of the application proposes to use a multi-stage constant current charging method to charge the battery with constant current, and dynamically adjust the charging current of each constant current charging stage to maximize The charging current in the charging process, specifically, in each constant current charging stage, the battery charging current is calculated according to the battery's state information (such as power), and then the charging current is used to charge the battery with constant current, so that the entire The charging speed during the charging process is maximized and the user experience is improved.

Among them, the charging current of each constant current charging stage can be determined based on the battery's current power, rated power and other battery state information. For example, the difference between the preset power and the current power of the battery can be multiplied by the preset The coefficient is used as the charging current of the battery.

It should be understood that the main body for determining the charging current described above may be a charging device or an electronic device. For example, the charging device is the main body for determining the charging current, and the charging device can determine the charging current of the current constant current charging stage according to the state information of the battery. Alternatively, the electronic device is the main body for determining the charging current, and the electronic device charging device may determine the charging current of the current constant current charging stage according to the state information of the battery, and then send the charging current to the charging device.

It should be understood that the charging device is used to charge a battery in an electronic device. An electronic device may refer to a mobile terminal, and the “mobile terminal” may include, but is not limited to, a smart phone, a computer, a personal digital assistant (PDA), wearable devices, Bluetooth headsets, gaming devices, camera devices, etc. The charging device may be a device capable of charging the terminal, such as an adapter, a mobile power bank (power bank), or a car charger.

In the embodiment of the present application, the charging device can be connected to the charging interface of the electronic device. Furthermore, the charging device can charge the electronic device through the power cord in the charging interface, and the charging device can communicate with the electronic device through the data line in the charging interface. . Thus, through the communication between the electronic device and the charging device, the charging process of the battery can be controlled to achieve a better charging effect.

The following describes in detail the fast charging method of the embodiment of the present application in combination with specific examples.

FIG. 1 is a schematic flowchart of a fast charging method according to an embodiment of the present application. The fast charging method of the embodiment of the present application includes the following steps:

S1: Determine the charging current of the current constant current charging stage, and charge the battery with constant current at the determined charging current until entering the next constant current charging stage, where multiple constant current charging stages in the charging process correspond to multiple The charging current, and the charging current of each constant current charging stage is determined according to the battery status information.

It should be understood that a plurality of preset constant current charging stages can be preset, and the preset charging current of each preset constant current charging stage can be determined according to the state information of the battery, such as battery power information, for example, can be preset The amount of power required to be charged in each constant current charging stage, and then the charging current of each constant current charging stage is set based on the preset power. Specifically, each preset constant current charging stage can be preset with a corresponding preset charging current and preset charging time. When charging according to the preset charging current and preset charging time, due to the The power is equal to the product of the charging current and the charging time. Therefore, the power charged into the battery in each constant current charging stage can also be preset. For example, the preset charging power Q=I×t, where I is the preset charging current, and t is the preset charging time.

Therefore, the preset constant current charging stage and the preset charging current may have a one-to-one mapping relationship. After the preset constant current charging stage of the current constant current charging stage is determined, the corresponding preset charging current and The preset charging time, after obtaining the charging current, can also determine the preset constant current charging stage where the current constant current charging stage is.

In the actual charging process, you can first determine the preset constant current charging phase corresponding to the current constant current charging phase, and then use the preset charging current corresponding to the preset constant current charging phase as the charging current of the current constant current charging phase, and In the current constant current charging stage, the battery is charged with constant current at a determined charging current.

Of course, after determining the preset constant current charging phase corresponding to the current constant current charging phase, the charging current of the current constant current charging phase can also be calculated according to the battery power at the end of the previous constant current charging phase.

Thus, the charging current of each constant current charging stage is maximized, thereby maximizing the charging speed during the entire charging process.

In an embodiment of the present application, determining the charging current of each constant current charging stage according to the state information of the battery includes: calculating the charging current of the battery according to the stored power of the battery and the preset power.

It should be understood that the stored power of the battery may refer to the currently stored power in the battery, including the remaining power of the battery before charging and the power charged in the charging process. Assuming that the remaining power of the battery before charging is 0, that is, the initial power of the battery Q0 = I0 × t0 = 0, where the initial charging current of the battery I0 = 0, the initial charging time t0 = 0, and after n-1 constant In the current charging stage, the total power charged into the battery is Q(n-1)=I0×t0+I1×t1+...+I(n-1), then the stored power of the battery is the total power charged into the battery Q(n-1), where I1 is the charging current of the first constant current charging stage, t1 is the actual charging time of the first constant current charging stage, and I(n-1) is the n-1 constant current charging stage The charging current, t(n-1) is the actual charging time of the n-1 constant current charging stage (the actual charging time is determined in the following description).

Specifically, obtaining the stored power of the battery includes: calculating the stored power of the battery according to the charging current and charging time of the battery. For example, the stored power of the battery can be calculated based on the remaining power of the battery at the start of charging and the charging current and charging time of the battery in each constant current charging phase from the start of charging to the last constant current charging phase.

More specifically, calculating the charging current of the battery according to the preset power and the power stored in the battery includes:

Calculate the difference between the preset power and the power stored in the battery;

Obtain the product of the difference and the preset coefficient as the charging current of the battery.

The preset power level may be the rated power level of the battery, and the preset coefficient may be the rated charge rate of the battery.

That is to say, taking the nth constant current charging stage as an example, the charging current of the nth constant current charging stage is In=m*[Qc-Q(n-1)], m is the preset coefficient, and Qc is the rated power. Q(n-1) is the power stored in the battery after (n-1) constant current charging phases.

Specifically, assuming that the remaining power of the battery before charging is 0, that is, the initial power of the battery Q0 = I0 × t0 = 0, where the initial charging current of the battery I0 = 0 and the initial charging time t0 = 0, then the first The charging current I1 in the constant current charging stage=a×(Qc-I0×t0), where a is the rated charging rate of the battery. Furthermore, the charging current I1 is used to charge the preset charging time t1 after the first constant current During the charging phase, the amount of electricity charged into the battery, that is, the circuit stored in the battery is Q1=I1×t1, so the charging current I2=a×(Qc-Q1)=a×(Qc-(I0× t0+I1×t1)), and so on, the charging current of the nth constant current charging stage In=a×(Qc-Q(n-1))=a×(Qc-(I0×t0+I1×t1+.. .+I(n-1))).

It should be understood that the charging current and the preset charging current in the embodiments of the present application can be calculated according to the aforementioned calculation method.

In addition, when the remaining power of the battery is not 0, the charging current I1 of the first constant current charging stage can also be calculated according to the remaining power Qs and the preset power Qc of the battery at the beginning of charging, that is, in this case, the first constant The charging current I1 in the charging stage is a×(Qc-Qs). After the charging current I1 of the first constant current charging stage is determined, the predetermined constant current charging stage corresponding to the charging current I1 can also be determined according to the determined charging current I1, and then the preset constant current charging stage corresponding to the predetermined constant current charging stage The charging time is determined as the preset charging time of the first constant current charging stage, so that the charging parameters (charging current and charging time) of the initial constant current charging stage of the charging process can be determined.

That is to say, assuming that the remaining power of the battery at the beginning of charging is Qs, the preset charging current Ij of the j-th preset constant current charging stage is equal to the charging current I1 of the first constant current charging stage, then Qs=Q(j -1), that is, the power charged into the battery through (j-1) preset constant current charging stages from the power level to 0 is Qs. Therefore, when the remaining power of the battery is Qs, the j-th preset constant The current charging phase is the initial charging of the battery, and the preset charging time of the first constant current charging phase is the preset charging time of the jth preset constant current charging phase.

According to an embodiment of the present application, the switching point of the current constant current charging phase can be determined according to the charging time of the current constant current charging phase or the charging voltage of the battery.

Specifically, determining the switching point of the constant current charging phase by the charging time may be: when the charging time of the current constant current charging phase reaches the preset charging time of the current constant current charging phase, switching to the next constant current charging phase.

Among them, the preset charging time for each constant current charging stage can be preset, and the length of the preset charging time can be adjusted according to specific needs. For example, the preset charging time can be determined by battery status information such as power information. The preset charging time for different constant current charging stages can be the same or different.

That is to say, you can first determine the charging current of the current constant current charging stage, and determine the preset charging time of the current constant current charging stage, and then perform constant current charging on the battery with the determined charging current, and record the charging of the current constant current charging stage Time, when the charging time of the current constant current charging stage reaches the preset charging time, enter the next constant current charging stage.

Specifically, determining the switching point of the constant current charging stage by the charging voltage may be: when the charging voltage of the battery reaches the preset voltage, switching to the next constant current charging stage.

Wherein, the preset voltage may be greater than or equal to the rated voltage of the battery.

It should be understood that in some embodiments, the preset voltage may be the rated voltage V0, and at this time, the rated voltage V0 is used as the switching point of the constant current charging stage. In other embodiments, the preset voltage may also be greater than the rated voltage of the battery. For example, it is V0+Vx (Vx>0). At this time, the rated voltage V0+Vx is used as the switching point of the constant current charging stage, so that the charging speed can be further improved.

That is to say, you can first determine the charging current of the current constant current charging stage, and then charge the battery with constant current at the determined charging current, detect the charging voltage of the battery, and enter the next constant when the charging voltage of the battery reaches the preset voltage. Current charging stage.

It should be understood that the charging time and the charging voltage in the foregoing embodiments can be combined to determine the switching point of the constant current charging phase, that is, when the charging time of the current constant current charging phase reaches the preset charging time or the charging voltage of the battery reaches When the voltage is preset, switch to the next constant current charging stage.

It should also be understood that if in the current constant current charging stage, the battery charging voltage reaches the preset voltage as the switching point to switch to the next constant current charging stage, then the actual charging time of the current constant current charging stage can be recorded by recording the battery The time to charge the voltage to the preset voltage is determined. If in the current constant current charging phase, the charging time reaches the preset charging time as the switching point to switch to the next constant current charging phase, then the actual charging time of the current constant current charging phase is the preset charging time.

It should be noted that if in a certain constant current charging stage, the charging voltage of the battery reaches the preset voltage and the charging stop condition has not been met (for example, the current power Qn of the battery is not equal to the rated power Qc, which will be mentioned in the following embodiments ), when the charging voltage of the battery reaches the preset voltage, it will switch to the next constant current charging stage, and each subsequent constant current charging stage will reach the preset voltage as the switching point.

S2: In the process of constant current charging, obtain the stored power of the battery;

S3: When the difference between the stored power of the battery and the preset power is less than or equal to the preset threshold, stop charging the battery.

Among them, the preset power can refer to the rated power of the battery. As the rated capacity of the battery may change with the use of the battery, the rated capacity of the battery can be corrected at intervals, and then the preset power in step S3 Set the power level for calibration.

It should be understood that in the process of constant current charging, step S2 and step S3 can be executed after each constant current charging stage ends, or, it can also be performed when the charging current of the battery reaches (greater than or equal to) the first current value or the battery After the electric quantity reaches (greater than or equal to) the first electric quantity value, step S2 and step S3 are executed after each subsequent constant current charging phase ends.

Specifically, after the battery is charged with a constant current, it will also be judged whether the difference between the stored power of the battery and the preset power is less than or equal to the preset threshold, that is, whether the stored power of the battery is basically equal to the rated power, if If the difference between the stored power of the battery and the preset power is less than or equal to the preset threshold, it is determined that the charging is over and the battery is stopped. If the difference between the stored power of the battery and the preset power is greater than the preset threshold, then Continue to charge with constant current.

As mentioned above, the fast charging method of the embodiment of the present application adopts the following charging process:

Assuming that the rated capacity of the battery is known to be Qc and the rated charge rate is a, in this embodiment, I0=0, t0=0, Q0=0, and the amount of electricity charged into the battery Qi=I0×t0+I1×t1+.. .+Ii×ti, the charging current is Ii=a×[Q0-Q(i-1)], i is a positive integer.

First, start constant current charging with charging current I1=a×Qc-I0×t0), after charging with current I1 constant current for t1 time, switch to charging current I2=a×[Qc-(I0×t0+I1×t1 )], after continuing constant current charging with charging current I2 for t2 time, switch to charging current I3=a×[Qc-(I0×t0+I1×t1+I2×t2)], and so on, when the current is switched to In=a×[Qc-(I0×t0+I1×t1+...+I(n-1)×t(n-1))] and after charging for tn time, calculate whether Qc and Qn are equal, if If they are equal, stop charging. If they are not equal, continue to the next constant current charging stage until they are equal. Wherein, in this embodiment, Qc and Qn being equal may mean that the difference between Qc and Qn is less than or equal to the preset threshold.

As shown in FIG. 2, the charging process of the embodiment of the present application includes the following steps:

S101: Start charging.

S102: The current is switched to In=a×[Qc-Q(n-1)].

S103: Determine whether Qc and Qn are equal.

If yes, go to step S105; if not, go to step S104.

S104: When the charging time t of the current constant current charging phase reaches the preset charging time tn or the charging voltage V of the battery reaches the preset voltage V0, add 1 to n, that is, n=n+1, and execute the next constant current charging phase.

S105: Stop charging.

In summary, according to the fast charging method proposed in the embodiments of the present application, by dynamically adjusting the charging current, the charging speed during the entire charging process can be optimized, the charging time can be greatly shortened, and the charging efficiency can be effectively improved.

The following describes in detail the charging device 100 and the electronic device 200 according to the embodiments of the present application with reference to FIGS. 3 to 5. It should be understood that the terms and features involved on the device side are similar to those on the method side, and repeated descriptions are appropriately omitted for brevity.

FIG. 3 is a schematic block diagram of the charging device 100 according to an embodiment of the present application. 3 and 6, after the charging device 100 is connected to the electronic device 200 through the charging interface 105, it charges the battery 204 of the electronic device 200 through the charging interface 105. The charging device 100 includes a first control circuit 101 and a first charging device. Circuit 102, wherein the first control circuit 101 is used to determine the charging current of the current constant current charging stage, and the determined charging current is used to charge the battery with constant current through the first charging circuit 102 until entering the next constant current charging stage Among them, the multiple constant current charging stages in the charging process correspond to multiple charging currents, and the charging current of each constant current charging stage is determined according to the state information of the battery, and during the constant current charging process, the battery stored When the difference between the power stored in the battery and the preset power is less than or equal to the preset threshold, stop charging the battery.

According to an embodiment of the present application, the first control circuit 101 is also used to calculate the charging current of the battery according to the stored power of the battery and the preset power in each constant current charging stage.

According to an embodiment of the present application, the first control circuit 101 is also used to calculate the stored power of the battery according to the charging current and charging time of the battery.

According to an embodiment of the present application, the first control circuit 101 is also used to calculate the difference between the preset power and the power stored in the battery, and to obtain the product of the difference and the preset coefficient as the battery charge Current.

According to an embodiment of the present application, the preset voltage is the rated power of the battery, and the preset coefficient is the rated charging rate of the battery.

According to an embodiment of the present application, the first control circuit 101 is further configured to switch to the next constant current charging stage when the charging time of the current constant current charging stage reaches the preset charging time of the current constant current charging stage.

According to an embodiment of the present application, the first control circuit 101 is further configured to switch to the next constant current charging stage when the charging voltage of the battery reaches a preset voltage.

According to an embodiment of the present application, the preset voltage is greater than or equal to the rated voltage of the battery.

In summary, according to the charging device 100 proposed in the embodiment of the present application, by dynamically adjusting the charging current, the charging speed during the entire charging process can be optimized, the charging time can be greatly shortened, and the charging efficiency can be effectively improved.

FIG. 4 is a schematic block diagram of an electronic device 200 according to an embodiment of the present application. As shown in FIGS. 4 and 6, the electronic device 200 communicates with the charging device 100 through the charging interface 205 after being connected to the charging device 100 through the charging interface 205, and the charging device 100 charges the battery 204 of the electronic device 200 through the charging interface 205. The electronic device 200 includes a second control circuit 201 and a second charging circuit 202. The second control circuit 201 is used to determine the charging current of the current constant current charging stage, and send the determined charging current to the charging device so that the charging device can With the determined charging current, the battery is charged with constant current through the second charging circuit 202 until it enters the next constant current charging stage, wherein the multiple constant current charging stages in the charging process correspond to multiple charging currents, and each constant current charging stage The charging current in the current charging stage is determined according to the state information of the battery; the second control circuit 201 is also used to obtain the stored power of the battery during the constant current charging process, and calculate the difference between the stored power of the battery and the preset power When it is less than or equal to the preset threshold, the charging device is controlled to stop charging the battery.

According to an embodiment of the present application, the second control circuit 201 is further configured to calculate the charging current of the battery according to the stored power of the battery and the current power of the preset power battery in each constant current charging stage.

According to an embodiment of the present application, the second control circuit 201 is also used to calculate the stored power of the battery according to the charging current and charging time of the battery.

According to an embodiment of the present application, the second control circuit 201 is also used to calculate the difference between the preset power and the power stored in the battery, and to obtain the product of the difference and the preset coefficient as the battery charge Current.

According to an embodiment of the present application, the preset power is the rated power of the battery, and the preset coefficient is the rated charging rate of the battery.

According to an embodiment of the present application, the second control circuit 201 is further configured to switch to the next constant current charging stage when the charging time of the current constant current charging stage reaches the preset charging time of the current constant current charging stage.

According to an embodiment of the present application, the second control circuit 201 is also used to switch to the next constant current charging stage when the charging voltage of the battery reaches a preset voltage.

In summary, according to the electronic device 200 proposed in the embodiments of the present application, by dynamically adjusting the charging current, the charging speed during the entire charging process can be optimized, the charging time can be greatly shortened, and the charging efficiency can be effectively improved.

FIG. 5 is a schematic block diagram of a charging system 300 according to an embodiment of the present application. As shown in FIGS. 5 and 6, the charging system 300 includes the charging device 100 described in FIG. 3 and the electronic device 200 described in FIG. 4.

According to the charging system 300 proposed in the embodiment of the present application, by dynamically adjusting the charging current, the charging speed during the entire charging process can be optimized, the charging time can be greatly shortened, and the charging efficiency can be effectively improved.

In addition, the embodiment of the present application also proposes a readable storage medium on which a fast charging program of the battery is stored, and when the program is executed by the processor, the fast charging method in the embodiments of FIGS. 1 to 2 is implemented.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the above-described system, device, and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

A person of ordinary skill in the art may be aware that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

In the several embodiments provided in this application, it should be understood that the disclosed system, device, and method may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

In addition, the functional units in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.

If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program code .

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Should be covered within the scope of protection of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

A fast charging method, characterized by comprising the following steps:

Determine the charging current of the current constant current charging stage, and charge the battery with constant current at the determined charging current until entering the next constant current charging stage, where multiple constant current charging stages in the charging process correspond to multiple charging currents , And the charging current of each constant current charging stage is determined according to the state information of the battery;

In the process of constant current charging, obtaining the stored power of the battery;

When the difference between the stored power of the battery and the preset power is less than or equal to the preset threshold, stop charging the battery.
The fast charging method according to claim 1, wherein the charging current in each of the constant current charging stages is determined according to the state information of the battery, comprising:

Calculate the charging current of the battery according to the stored power of the battery and the preset power.
The fast charging method according to claim 2, wherein obtaining the stored power of the battery comprises:

The stored power of the battery is calculated according to the charging current and charging time of the battery.
The fast charging method according to claim 2, wherein calculating the charging current of the battery according to the preset power and the power stored by the battery comprises:

Calculating the difference between the preset power and the power stored by the battery;

The product of the difference and the preset coefficient is obtained as the charging current of the battery.
The fast charging method according to claim 1, wherein when the charging time of the current constant current charging phase reaches the preset charging time of the current constant current charging phase, switching to the next constant current charging phase.
The fast charging method according to claim 1 or 5, wherein when the charging voltage of the battery reaches a preset voltage, switching to the next constant current charging stage.
A charging device, characterized in that, after the charging device is connected to an electronic device through a charging interface, the battery of the electronic device is charged through the charging interface, and the charging device includes a first control circuit and a first charging device. Circuit, where

The first control circuit is used to determine the charging current of the current constant current charging stage, and the determined charging current is used to charge the battery with constant current through the first charging circuit until entering the next constant current charging stage, wherein, The multiple constant current charging stages in the charging process respectively correspond to multiple charging currents, and the charging current of each constant current charging stage is determined according to the state information of the battery, and during the constant current charging process, the The stored power of the battery, and stop charging the battery when the difference between the stored power of the battery and the preset power is less than or equal to the preset threshold.
The charging device according to claim 7, wherein the first control circuit is further configured to calculate the battery power according to the stored power of the battery and a preset power in each of the constant current charging stages recharging current.
8. The charging device according to claim 8, wherein the first control circuit is further configured to calculate the stored power of the battery according to the charging current and the charging time of the battery.
The charging device according to claim 8 or 9, wherein the first control circuit is further configured to calculate the difference between the preset power level and the current power level stored in the battery, and obtain the The product of the difference and the preset coefficient is used as the charging current of the battery.
7. The charging device according to claim 7, wherein the first control circuit is further configured to: when the charging time of the current constant current charging phase reaches the preset charging time of the current constant current charging phase, Switch to the next constant current charging stage.
The charging device according to claim 7 or 11, wherein the first control circuit is further configured to switch to the next constant current charging stage when the charging voltage of the battery reaches a preset voltage.
An electronic device, wherein the electronic device communicates with the charging device through the charging interface after being connected to the charging device through the charging interface, and the charging device is the device of the electronic device through the charging interface. For battery charging, the electronic device includes a second control circuit and a second charging circuit, wherein,

The second control circuit is used to determine the charging current of the current constant-current charging stage, and send the determined charging current to the charging device, so that the charging device uses the second charging circuit to perform the charging according to the determined charging current. The battery is charged with constant current until it enters the next constant current charging stage, wherein the multiple constant current charging stages in the charging process correspond to multiple charging currents, and the charging current of each constant current charging stage is based on the battery The status information is determined;

The second control circuit is also used to obtain the stored power of the battery during constant current charging, and when the difference between the stored power of the battery and a preset power is less than or equal to a preset threshold, Controlling the charging device to stop charging the battery.
The electronic device according to claim 13, wherein the second control circuit is further configured to calculate the power of the battery according to the stored power of the battery and a preset power in each of the constant current charging stages recharging current.
The electronic device according to claim 13 or 14, wherein the second control circuit is further configured to calculate the stored power of the battery according to the charging current and charging time of the battery.
The electronic device according to claim 14, wherein the second control circuit is further configured to calculate the difference between the preset power and the power stored by the battery, and obtain the difference and The product of the preset coefficients is used as the charging current of the battery.
The electronic device according to claim 13, wherein the second control circuit is further configured to: when the charging time of the current constant current charging phase reaches the preset charging time of the current constant current charging phase, Switch to the next constant current charging stage.
The electronic device according to claim 13 or 17, wherein the second control circuit is further configured to switch to the next constant current charging stage when the charging voltage of the battery reaches a preset voltage.
A charging system, comprising the charging device according to any one of claims 7-12, and the electronic equipment according to any one of claims 13-18.
A readable storage medium, characterized in that a fast charging program of a battery is stored thereon, and when the program is executed by a processor, the fast charging method according to any one of claims 1-6 is realized.