A charging control method, device and computer storage medium

Abstract

The present disclosure relates to a charging control method, device and computer storage medium, and belongs to the field of battery charging; wherein the charging control method includes: when a preset trigger condition is detected to be triggered, determining a target current value; determining a target regulation strategy corresponding to the preset trigger condition; regulating the charging current to the target current value based on the target regulation strategy; adopting the technical solution provided by the present disclosure can make current regulation more flexible, and can effectively improve the charging strategy to increase the charging speed.

Description

Technical Field

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

[0002] Battery fast charging is increasingly widely used, and users have a growing demand for fast charging. In related technologies, step-type or pulse-type current control methods are simple to control, but the control process is too rigid. How to optimize current control has always been a concern of the industry. Summary of the invention

[0003] The present disclosure provides a charging control method, device and computer storage medium.

[0004] According to a first aspect of an embodiment of the present disclosure, a charging control method is provided, the method comprising:

[0005] When it is detected that a preset trigger condition is triggered, determining a target current value;

[0006] Determine the target control strategy corresponding to the preset trigger condition;

[0007] The charging current is regulated to the target current value based on the target regulation strategy.

[0008] In the above solution, the preset trigger condition is divided into at least a first trigger condition and a second trigger condition, and the method further includes:

[0009] In the process of regulating the charging current to a first target current value according to a first target regulation strategy based on a first trigger condition, if it is detected that a second trigger condition is triggered, determining a second target current value according to a second target regulation strategy based on the second trigger condition, and comparing the first target current value with the second target current value to obtain a comparison result;

[0010] It is determined whether to adjust the first target current value to a second target current value according to the comparison result.

[0011] In the above solution, determining whether to adjust the first target current value to the second target current value according to the comparison result includes:

[0012] If the comparison result indicates that the first target current value is greater than the second target current value, determining to adjust the first target current value to the second target current value;

[0013] If the comparison result indicates that the first target current value is less than or equal to the second target current value, it is determined not to adjust the first target current value to the second target current value.

[0014] In the above solution, the preset trigger condition is divided into at least a first trigger condition and a second trigger condition. When it is detected that the preset trigger condition is triggered, the target current value is determined, including:

[0015] When it is detected that the first trigger condition is triggered, determining the target current value to be a first target current value according to the first trigger condition;

[0016] When it is detected that the second trigger condition is triggered, determining the target current value to be a second target current value according to the second trigger condition;

[0017] When it is detected that the first trigger condition and the second trigger condition are triggered at the same time, the first target current value is determined according to the first trigger condition, the second target current value is determined according to the second trigger condition, and the minimum value of the first target current value and the second target current value is determined as the target current value.

[0018] In the above scheme, the preset trigger condition is divided into at least a first trigger condition and a second trigger condition, the first trigger condition is a voltage trigger condition or a temperature trigger condition, and the second trigger condition is a temperature trigger condition or a voltage trigger condition. The target control strategy corresponding to the preset trigger condition is determined, including:

[0019] When it is detected that the voltage trigger condition is triggered, determining that the target control strategy matching the voltage trigger condition is a constant voltage control mode;

[0020] When it is detected that the temperature trigger condition is triggered, determining that the target control strategy matching the temperature trigger condition is a time control mode;

[0021] When it is detected that the voltage trigger condition and the temperature trigger condition are triggered at the same time, it is determined that the target control strategy is one of a constant voltage control mode or a time control mode.

[0022] In the above solution, the method further comprises: determining an initial current value when a preset trigger condition is triggered;

[0023] The step of regulating the charging current to the target current value based on the target regulation strategy includes:

[0024] The charging current is regulated step by step from the initial current value to the target current value.

[0025] In the above solution, the step-by-step adjustment of the charging current from the initial current value to the target current value includes:

[0026] Determining a step length for adjusting the initial current value to the target current value, wherein the step length is a voltage step length or a current step length;

[0027] Determining a time step for achieving each of the step steps;

[0028] According to the step size and the time step size, the charging current is regulated from the initial current value to the target current value.

[0029] In the above solution, the step of determining the time step for implementing each step size includes:

[0030] According to the principle of equal time step length, determine the time step length to achieve each step length; or

[0031] According to the principle of exponential growth of time step, the time step for achieving each step is determined.

[0032] In the above solution, the step of determining the time step for implementing each step size includes:

[0033] The time step for implementing each step length is determined according to the temperature range of the battery temperature during regulation, wherein different temperature ranges correspond to different time step selection principles.

[0034] According to a second aspect of an embodiment of the present disclosure, there is provided a charging control device, the device comprising:

[0035] A detection module is configured to detect whether a preset trigger condition is met;

[0036] A determination module is configured to determine a target current value when a preset trigger condition is detected to be triggered; and determine a target control strategy corresponding to the preset trigger condition;

[0037] The control module is configured to regulate the charging current to the target current value based on the target regulation strategy.

[0038] In the above solution, the preset trigger condition is divided into at least a first trigger condition and a second trigger condition, and the determination module is further configured to:

[0039] In the process of regulating the charging current to a first target current value based on a first target control strategy of a first trigger condition, if the detection module detects that a second trigger condition is triggered, the second target current value is determined based on the second target control strategy of the second trigger condition, and the first target current value and the second target current value are compared to obtain a comparison result; and whether to adjust the first target current value to the second target current value is determined according to the comparison result.

[0040] In the above solution, the determining module is further configured as follows:

[0041] If the comparison result indicates that the first target current value is greater than the second target current value, determining to adjust the first target current value to the second target current value;

[0042] If the comparison result indicates that the first target current value is less than or equal to the second target current value, it is determined not to adjust the first target current value to the second target current value.

[0043] In the above solution, the preset trigger condition is divided into at least a first trigger condition and a second trigger condition, and the determination module is further configured to:

[0044] When the detection module detects that the first trigger condition is triggered, determining the target current value to be a first target current value according to the first trigger condition;

[0045] When the detection module detects that the second trigger condition is triggered, determining the target current value to be a second target current value according to the second trigger condition;

[0046] When the detection module detects that the first trigger condition and the second trigger condition are triggered at the same time, the first target current value is determined according to the first trigger condition, the second target current value is determined according to the second trigger condition, and the minimum value between the first target current value and the second target current value is determined as the target current value.

[0047] In the above solution, the preset trigger condition is divided into at least a first trigger condition and a second trigger condition, the first trigger condition is a voltage trigger condition or a temperature trigger condition, the second trigger condition is a temperature trigger condition or a voltage trigger condition, and the determination module is further configured to:

[0048] When the detection module detects that the voltage trigger condition is triggered, determining that the target control strategy matching the voltage trigger condition is a constant voltage control mode;

[0049] When the detection module detects that the temperature trigger condition is triggered, determining that the target control strategy matching the temperature trigger condition is a time control mode;

[0050] When the detection module detects that the voltage trigger condition and the temperature trigger condition are triggered at the same time, it determines that the target control strategy is one of a constant voltage control mode and a time control mode.

[0051] In the above solution, the determination module is further configured to: determine the initial current value when the preset trigger condition is triggered;

[0052] The control module is further configured to:

[0053] The charging current is regulated step by step from the initial current value to the target current value.

[0054] In the above solution, the control module is further configured as:

[0055] Determining a step length for adjusting the initial current value to the target current value, wherein the step length is a voltage step length or a current step length;

[0056] Determining a time step for achieving each of the step steps;

[0057] According to the step size and the time step size, the charging current is regulated from the initial current value to the target current value.

[0058] In the above solution, the determining module is further configured as follows:

[0059] According to the principle of equal time step length, determine the time step length to achieve each step length; or

[0060] According to the principle of exponential growth of time step, the time step for achieving each step is determined.

[0061] In the above solution, the determining module is further configured as follows:

[0062] The time step for implementing each step length is determined according to the temperature range of the battery temperature during regulation, wherein different temperature ranges correspond to different time step selection principles.

[0063] According to a third aspect of an embodiment of the present disclosure, there is provided a charging control device, including:

[0064] processor;

[0065] a memory for storing executable instructions;

[0066] Wherein, the processor is configured to: execute the executable instructions to implement the charging control method described in any of the aforementioned solutions.

[0067] According to a fourth aspect of an embodiment of the present disclosure, a computer storage medium is provided, wherein executable instructions are stored in the computer storage medium, and when the executable instructions are executed by a processor, the processor executes the charging control method described in any one of the aforementioned schemes.

[0068] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

[0069] In the present disclosure, when it is detected that a preset trigger condition is triggered, a target current value is determined; a target control strategy corresponding to the preset trigger condition is determined; and the charging current is regulated to the target current value based on the target control strategy; in this way, by selecting a target control strategy that is compatible with the preset trigger condition and regulating the charging current to the target current value, the current control can be made more flexible, and the charging strategy can be effectively improved to increase the charging speed.

[0070] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present invention, and together with the description, are used to explain the principles of the present invention. In the drawings:

[0072] Figure 1 is a schematic diagram of a current curve when current regulation is performed in a constant current to constant current manner according to an exemplary embodiment;

[0073] Figure 2 is a schematic diagram of a voltage curve when current regulation is performed in a constant current to constant current manner according to an exemplary embodiment;

[0074] Figure 3 is a schematic diagram of a temperature curve when current is controlled by a constant current to constant current method according to an exemplary embodiment;

[0075] Figure 4 is a flow chart of a charging control method according to an exemplary embodiment;

[0076] Figure 5 is a schematic diagram of a current curve of voltage-type regulation based on a cell voltage according to an exemplary embodiment;

[0077] Figure 6 is a schematic diagram of a voltage curve of voltage-type regulation based on a cell voltage according to an exemplary embodiment;

[0078] Figure 7 FIG. 1 is a schematic diagram of a current curve showing a case where the slope of current change is adjusted by adjusting the time interval of the step length according to an exemplary embodiment. Figure 1 ;

[0079] Figure 8 FIG. 1 is a schematic diagram of a current curve showing a case where the slope of current change is adjusted by adjusting the time interval of the step length according to an exemplary embodiment. Figure 2 ;

[0080] Fig. 9is a schematic diagram of a current curve when a time interval increases exponentially according to an exemplary embodiment;

[0081] Fig.10 is a structural block diagram of a charging control device according to an exemplary embodiment;

[0082] Fig.11 is a block diagram of an electronic device 800 to which a charging control method is applied according to an exemplary embodiment. DETAILED DESCRIPTION

[0083] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the embodiments of the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the embodiments of the present application as detailed in the appended claims.

[0084] The terms used in the disclosed embodiments are only for the purpose of describing specific embodiments and are not intended to limit the disclosed embodiments. The singular forms of "a", "an", and "the" used in the disclosed embodiments and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0085] It should be understood that although the terms first, second, third, etc. may be used to describe various information in the disclosed embodiments, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the disclosed embodiments, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the words "if" and "if" as used herein may be interpreted as "at" or "when" or "in response to determination".

[0086] The technical solution of the present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0087] In the related art, the current curve diagram when the constant current to constant current method is used for current control is as follows: Figure 1 As shown, from Figure 1It can be seen that the current adjustment method is a "step" or "pulse" adjustment method. This adjustment method is simple to control, but the control to achieve a certain functional requirement is relatively rough. When regulating the charging current, a certain target current value is directly regulated, without detailed configuration and optimization of the transition process. For example, due to temperature restrictions during charging, the current is expected to be adjusted from 6A to 4A. The charging current is directly adjusted from 6A to 4A. The voltage curve diagram when the constant current to constant current method is used for current regulation is as follows Figure 2 As shown, from Figure 2 It can be seen that the voltage will drop when the current is adjusted. When the current is regulated due to temperature limitation, the temperature will also drop. The temperature curve diagram is shown in Figure 3 Although the constant current to constant current method can achieve the current regulation result, it ignores the performance of charging speed and temperature control, which is prone to problems such as battery cell voltage drop and temperature drop during temperature control.

[0088] Figure 4 1 is a flow chart of a charging control method according to an exemplary embodiment. The charging control method is applied to a terminal with a charging function or a device capable of charging a terminal, such as a charger. The terminal includes a mobile phone, a tablet computer, a wearable device, etc. Figure 4 As shown, the charging control method includes the following steps.

[0089] In step S11, when it is detected that the preset trigger condition is triggered, the target current value is determined;

[0090] In step S12, determining the target control strategy corresponding to the preset trigger condition;

[0091] In step S13, the charging current is regulated to the target current value based on the target regulation strategy.

[0092] In this embodiment, the preset trigger condition is divided into at least two types of trigger conditions, which are recorded as a first trigger condition and a second trigger condition. For example, the preset trigger condition may be a temperature trigger condition or a voltage trigger condition.

[0093] In some embodiments, when the temperature reaches a temperature threshold, it is determined that the temperature trigger condition is triggered. For example, when the temperature reaches 36°, it is determined that the temperature trigger condition is triggered.

[0094] In some embodiments, when the voltage reaches the voltage threshold, it is determined that the voltage trigger condition is triggered. For example, when the voltage reaches 4.25V, it is determined that the voltage trigger condition is triggered.

[0095] In this embodiment, the target current value is the final current value expected to be achieved after current regulation. In this embodiment, the target current values ​​corresponding to different preset trigger conditions may be different. Exemplarily, when the first trigger condition is triggered, the target current value is determined to be the first target current value according to the first trigger condition; when the second trigger condition is triggered, the target current value is determined to be the second target current value according to the second trigger condition.

[0096] In this embodiment, different preset trigger conditions may correspond to different target control strategies. For example, the first trigger condition corresponds to the first target control strategy, and the second trigger condition corresponds to the second target control strategy.

[0097] For example, the target control strategy corresponding to the voltage trigger condition is: constant voltage control mode. The target control strategy corresponding to the voltage trigger condition is: time control mode.

[0098] Among them, the constant voltage control method refers to the constant voltage control based on the cell voltage. Constant voltage means that the output voltage of the charger or the input voltage of the battery is fixed.

[0099] The battery can be understood as a series connection between a resistor R and a capacitor C. When a voltage is applied to the series connection of a resistor and a capacitor, the voltage of the capacitor will gradually rise, the voltage of the resistor will gradually decrease, and the current will gradually decrease. This is a decay process. During the constant voltage process, the current will gradually decrease. When the current is as small as a certain level, such as 200mA, the battery is determined to be fully charged and charging is terminated.

[0100] Among them, the time control method refers to the time control based on the time step. If it is divided into multiple gears to achieve the control of the charging current to the target current value, the time step refers to the time interval between the current gear and its adjacent gear. Here, the gear can be a voltage gear or a current gear.

[0101] In practical applications, the time step can be linearly equal in length or increase exponentially.

[0102] Exemplarily, the current value when the preset trigger condition is triggered is reduced to the target current value and is divided into N gears, and the time interval is the execution time from the current gear to its adjacent gear. Exemplarily, the voltage value when the preset trigger condition is triggered is reduced to the target voltage value and is divided into M gears, and the time interval is the execution time from the current gear to its adjacent gear. In practical applications, the values ​​of N and M can be adjusted according to actual conditions such as design requirements or user requirements to enhance the user experience.

[0103] For example, when controlling by time, the length of the time step can be specified, such as reducing the current by 50mA or the voltage by 20mV every 100mS.

[0104] In the technical solution described in the embodiment of the present disclosure, when it is detected that a preset trigger condition is triggered, a target current value is determined; a target control strategy corresponding to the preset trigger condition is determined; and the charging current is regulated to the target current value based on the target control strategy; in this way, by selecting a target control strategy that is compatible with the preset trigger condition, the charging current is regulated to the target current value, which can make current control more flexible; a constant voltage control method is used to improve the problem of cell voltage drop in traditional solutions, and a time interval control method can solve the problem of temperature drop during temperature control, which can effectively improve the charging strategy while also increasing the charging speed.

[0105] The technical solution of the present application can be applied to the field of terminal fast charging, and can also be expanded to the charging functions of other electronic devices or terminals.

[0106] based on Figure 1 In the technical solution shown, in some embodiments, the preset trigger condition is divided into at least a first trigger condition and a second trigger condition, and the method further includes:

[0107] Step S14 ( Figure 1 Not shown): In the process of regulating the charging current to a first target current value by a first target control strategy based on a first trigger condition, if it is detected that a second trigger condition is triggered, a second target control strategy based on the second trigger condition determines a second target current value, and compares the first target current value and the second target current value to obtain a comparison result; determine whether to adjust the first target current value to the second target current value based on the comparison result.

[0108] In this way, after the first trigger condition is triggered, in the process of regulating the charging current according to the first trigger condition, if the second trigger condition is also triggered, the influence of the second trigger condition on the regulation process will also be considered, so that the regulation process is more in line with the actual situation, and there is no need to continue to start the current regulation due to the second trigger condition after the current regulation initiated by the first trigger condition is completed, avoiding the problem that one regulation can only solve one trigger condition.

[0109] In some implementations, determining whether to adjust the first target current value to a second target current value according to the comparison result includes:

[0110] If the comparison result indicates that the first target current value is greater than the second target current value, determining to adjust the first target current value to the second target current value;

[0111] If the comparison result indicates that the first target current value is less than or equal to the second target current value, it is determined not to adjust the first target current value to the second target current value.

[0112] Exemplarily, the voltage trigger condition is triggered, and constant voltage regulation is used to make the current I C1 Down to I C2 ; At the same time, the temperature trigger condition is also triggered, and time regulation is required to allow I C1 Adjust to I trig1 , now we need to compare I C2 and I trig2 The minimum value of the two is selected as the target current.

[0113] based on Figure 1 In the technical solution shown, if the preset trigger condition is divided into at least a first trigger condition and a second trigger condition, in some embodiments, step S11 includes:

[0114] Step S11a: when it is detected that the first trigger condition is triggered, determining the target current value as a first target current value according to the first trigger condition; or

[0115] Step S11b: when it is detected that the second trigger condition is triggered, determining the target current value as a second target current value according to the second trigger condition; or

[0116] Step S11c: When it is detected that the first trigger condition and the second trigger condition are triggered at the same time, the first target current value is determined according to the first trigger condition, the second target current value is determined according to the second trigger condition, and the minimum value of the first target current value and the second target current value is determined as the target current value.

[0117] In this way, the adjusted target current value can meet both the exiting first trigger condition and the exiting second trigger condition, which helps to quickly solve various triggering problems encountered during charging and avoid the problem of having to start the regulation again because the adjusted target current value only meets the first trigger condition but does not meet the exiting second trigger condition, thereby increasing the charging speed.

[0118] based on Figure 1 In the technical solution shown, if the preset trigger condition is divided into at least a first trigger condition and a second trigger condition, in some embodiments, the first trigger condition is a voltage trigger condition or a temperature trigger condition, and the second trigger condition is a temperature trigger condition or a voltage trigger condition, the step S12 includes:

[0119] Step S12a: when it is detected that the voltage trigger condition is triggered, determining that the target control strategy matching the voltage trigger condition is a constant voltage control mode; or

[0120] Step S12b: when it is detected that the temperature trigger condition is triggered, determining that the target control strategy matching the temperature trigger condition is a time control mode; or

[0121] Step S12c: when it is detected that the voltage trigger condition and the temperature trigger condition are triggered at the same time, determining the target control strategy to be one of a constant voltage control mode and a time control mode.

[0122] In this way, selecting the corresponding target control strategy according to the type of trigger condition helps to complete charging quickly.

[0123] Because the simplified model of the battery can be equivalent to an RC series connection, when the battery cell voltage is constant during charging, the current will decay exponentially, I(t) = I0*exp(-t / RC), where t represents time, I0 represents the current before adjustment, I(t) represents the current value corresponding to time t, C represents the equivalent capacitive reactance of the battery, and R represents the equivalent impedance of the battery. Figure 5 The current curve diagram of voltage regulation based on constant voltage of the battery cell is shown. Figure 6 A schematic diagram of a voltage curve of voltage-type regulation based on a constant cell voltage is shown.

[0124] based on Figure 1 In the technical solution shown, if the preset trigger condition is divided into at least a first trigger condition and a second trigger condition, in some embodiments, the method further includes: determining an initial current value when the preset trigger condition is triggered;

[0125] The step S13 comprises:

[0126] Step S13a: regulating the charging current step by step from the initial current value to the target current value.

[0127] Here, the step refers to the step-by-step implementation of adjusting the initial current value to the target current value. The number of steps can be involved or adjusted according to actual conditions such as design requirements or user needs. For example, taking the initial current value of 6A to the target current of 3A as an example, relative to the direct drop from 6A transient to the target current of 3A, it is divided into three steps from 6A to 5A, from 5A to 4A, and from 4A to 3A. Continuing to take the example of the reduction from the initial current value of 6A to the target current of 3A, in addition to being divided into three gears, it can also be divided into six steps from 6A to 5.5A, from 5.5A to 5A, from 5A to 4.5A, from 4.5A to 4A, from 4A to 3.5A, and from 3.5A to 3A.

[0128] In some embodiments, step S13a includes:

[0129] Step S13aa: determining a step length for adjusting the initial current value to the target current value, wherein the step length is a voltage step length or a current step length;

[0130] Step S13ab: determining the time step for implementing each step length;

[0131] Step S13ac: According to the step size and the time step size, the charging current is regulated from the initial current value to the target current value.

[0132] Among them, the step length can be determined according to the total step length and the total number of steps. For example, taking the reduction from the initial current value of 6A to the target current of 3A as an example, the total step length is 6A-3A=3A. If the number of steps is selected as 3, the step length is 3A / 3=1A, from 6A to 5A is a step length, from 5A to 4A is a step length, and from 4A to 3A is a step length; if the number of steps is selected as 6, the step length is 3A / 6=0.5A, from 6A to 5.5A is a step length, from 5.5A to 5A is a step length, from 5A to 4.5A is a step length, from 4.5A to 4A is a step length, from 4A to 3.5A is a step length, and from 3.5A to 3A is a step length.

[0133] For example, from 4.25V to 4.35V, the total step length is 4.35V-4.25V=0.1V. If the number of steps is selected as 2, the step length is 0.1V / 2=0.05V. From 4.35V to 4.30V is one step length, and from 4.30V to 4.25V is one step length.

[0134] In some embodiments, step S13ab includes:

[0135] Step S13ab1: according to the principle of equal time step length, determine the time step length for achieving each step length;

[0136] The principle of equal time step length means that the time step length of each step is equal. For example, the current is reduced by 50mA every 100mS, or the voltage is increased by 20mV every 100mS.

[0137] In practical applications, the slope of the current change can be adjusted by adjusting the time interval of the step size.

[0138] For example, dI = 50mA, d represents the step size (similar to the meaning of calculus), dI is the step size reduction value of the current. dt = 100ms or dt = 500ms, dt is the step size time interval, which can be set to 50ms or 100ms or other time.

[0139] Figure 7 and Figure 8 The current curve schematic diagrams are shown respectively when the slope of the current change is adjusted by adjusting the time interval of the step size. Figure 7 Relative to Figure 8 For example, the time step is short, and the total time taken to drop from 6A to 4.2A is short; Figure 8 Relative to Figure 7 For example, the time step is long, and the total time taken to drop from 6A to 4.2A is long.

[0140] In some embodiments, step S13ab includes:

[0141] Step S13ab2: According to the principle of exponential growth of time steps, determine the time step for achieving each step.

[0142] The exponential growth principle of the time step means that the time step of each step is used as a variable, and the rate of growth of the variable is proportional to its current quantity. Assuming that the variable x grows exponentially with time t, then by definition, the change in x obeys the following differential equation: x'=kx, where k>0 is a constant representing a proportion of the growth of x.

[0143] Exemplarily, dI=50mA; dt(n)=RC*ln{[I0-(n-1)dI] / [I0-ndI]}, where dI represents the step reduction value of the current, I0 represents the current before adjustment, n represents the nth step, C represents the equivalent capacitive reactance of the battery, R represents the equivalent impedance of the battery, and dt(n) represents the time step when passing the nth step during the current regulation process.

[0144] Fig. 9 The current curve is shown in the case of exponential growth of the time interval. Fig. 9 It can be seen that the time step is variable and grows exponentially.

[0145] In some embodiments, step S13ab includes:

[0146] Step S13ab3: Determine the time step for implementing each of the step lengths according to the temperature range of the battery temperature during regulation, wherein different temperature ranges correspond to different time step selection principles.

[0147] In this way, the use of this current regulation strategy can make the control process more flexible and can ensure temperature control and charging speed at the same time.

[0148] In some embodiments, different step types may be pre-set according to different temperature ranges.

[0149] Here, the step type includes a time step of equal length and a time step of exponentially increasing length.

[0150] In this way, it is convenient to refer to the battery temperature during the adjustment process, so as to select a more appropriate time step, effectively improve the charging efficiency and optimize the charging details.

[0151] It should be understood that the above Figure 5-Figure 9 This is an optional specific implementation method, but is not limited to this.

[0152] It should also be understood that Figure 5-Figure 9 It is only for the purpose of illustrating the embodiments of the present disclosure, and those skilled in the art may Figure 5-Figure 9 Various obvious changes and / or substitutions can be made to the examples, and the resulting technical solutions still fall within the scope of the disclosure of the embodiments of the present disclosure.

[0153] In actual applications, the voltage of the battery will rise during the charging process. Assuming that the battery voltage range is 3.4V-4.3V, the battery voltage is 3.4V when it is out of power, and 4.3V when it is fully charged. In the process from 3.4V to 4.3V, the existing solution is to charge with a fixed current. After charging to 4.3V, it must be converted to a constant voltage mode, because during the charging process, the constant current to the battery has a certain impedance, part of which is the line impedance and part of which is the internal resistance of the battery. Under a certain current, such as 3A, the battery voltage is charged to 4.3V, but once the charging is stopped, the battery voltage will drop a little, because 4.3V is equal to the battery cell voltage + IR, I = 3A, R = line impedance + battery internal resistance. If you keep charging with 3A, it is impossible to fully charge the battery. If you use a constant current method and raise the voltage at the same time, such as charging to 4.4v or 4.5v, the battery may be fully charged, but there is a risk of overpressure. After the battery is overpressured, it may explode or age. In the scheme described in this application, battery charging has a process of constant current and then constant voltage. For example, first charge to 4.3V with constant current, and then charge with constant voltage. The constant voltage method here means that after the trigger condition is triggered, it is converted into constant voltage charging, and after the conversion to constant voltage, the output voltage of the charger or the input voltage of the battery is fixed. The battery can be understood as a resistor and a capacitor in series. When the voltage of the capacitor gradually rises, the voltage of the resistor will gradually decrease, and the current will gradually decrease. This is a decay process. During the constant voltage process, the current will gradually decrease. When the current is small to a certain extent, such as the current is as small as 200mA, we think the battery is fully charged.

[0154] In order to achieve fast charging, a larger current is used to charge the battery before the voltage reaches 4.1 or 4.2V. For example, 6A is used to charge the battery first, then it is converted to 5A when it reaches 4.2V, 4A when it reaches 4.3V, 3A when it reaches 4.35V, and then it is converted to constant voltage. In other words, the constant current is not a fixed current value, but is divided into several steps, which are 6A, 5A, 4A, and 3A. Adopting the scheme of this application, add a constant voltage (i.e. CV) between the two current steps. When it drops from 6A to 5A, use 6A charging to reach 4.2V, and use 4.2v constant voltage charging. During the constant voltage charging process, the current gradually decays, and the current will slowly drop from 6A to 5A; when it drops from 6A to 5A, we think it has reached the next step, and let the current continue to be constant at 5A. When it reaches 4.3V with 5A constant current charging, the next stage will drop to 4A. In this process, it is not allowed to drop directly to 4A, but it is still added with a constant voltage, so that it gradually drops to 4A during the constant voltage process. Repeat until the battery is fully charged. From 5A to 4A, from 4A to 3A, this CV is called step CV, i.e. (CV taper). During the constant voltage process, the current gradually decreases. The process of gradual decrease is called current regulator (current taper). Among the current tapers, the most basic technology step taper directly reduces it through a step. The step taper is triggered by voltage triggering, such as the process of decreasing from 5A to 4A and then gradually maintaining constant voltage. Another is temperature triggering, because during the charging process, the current is very large at the beginning and the temperature may rise very high, which will affect the user experience. When the battery temperature reaches 37°, it decreases from 5A to 3.5A. In the prior art, it is directly reduced from 5A to 3.5A. This application does not want it to drop instantly, but wants it to have a taper, that is, a process of gradually decreasing. There may be two types of tapers, one is a time step taper, and the other is a constant voltage taper.

[0155] Compared with the existing technical solutions, the charging current adjustment technology of the present application can realize the transition detail control of the current adjustment, rather than simple direct regulation. For example, if the charging current is adjusted from 6A to 4A, the present application solution will refine the technology and method of the gradual change process to achieve a process from 6A to 4A. The gradual process can choose the implementation method, constant voltage control or time step control, the step size can be selected, the control slope can be selected, and so on.

[0156] The usage scenarios of this application are terminal charging scenarios, including power-off charging, standby charging, screen-on charging, etc. In these scenarios, the charging current will be adjusted according to the battery voltage and the detected surface temperature. The current control technology of this application can make the performance of current control transition better, such as faster charging speed and better temperature control. The technical solution described in this embodiment makes current control more flexible, and adopts constant voltage control to improve the problem of battery cell voltage drop in traditional solutions. The use of time interval control can solve the problem of temperature drop during temperature control. While effectively improving the charging strategy, it can also increase the charging speed.

[0157] Fig.10 is a block diagram of a charging control device according to an exemplary embodiment. The charging control device is applied in a terminal. Fig.10 The device includes a detection module 10, a determination module 20 and a control module 30; wherein,

[0158] The detection module 10 is configured to detect whether a preset trigger condition is met;

[0159] The determination module 20 is configured to determine the target current value when a preset trigger condition is detected to be triggered; and determine the target control strategy corresponding to the preset trigger condition;

[0160] The control module 30 is configured to regulate the charging current to the target current value based on the target regulation strategy.

[0161] In some embodiments, the preset trigger condition is divided into at least a first trigger condition and a second trigger condition, and the determination module 20 is further configured to:

[0162] In the process of regulating the charging current to a first target current value based on a first target control strategy of a first trigger condition, if the detection module detects that a second trigger condition is triggered, the second target current value is determined based on the second target control strategy of the second trigger condition, and the first target current value and the second target current value are compared to obtain a comparison result; and whether to adjust the first target current value to the second target current value is determined according to the comparison result.

[0163] In some embodiments, the determining module 20 is further configured to:

[0164] If the comparison result indicates that the first target current value is greater than the second target current value, determining to adjust the first target current value to the second target current value;

[0165] If the comparison result indicates that the first target current value is less than or equal to the second target current value, it is determined not to adjust the first target current value to the second target current value.

[0166] In some embodiments, the preset trigger condition is divided into at least a first trigger condition and a second trigger condition, and the determination module 20 is further configured to:

[0167] When the detection module 10 detects that the first trigger condition is triggered, the target current value is determined to be a first target current value according to the first trigger condition;

[0168] When the detection module 10 detects that the second trigger condition is triggered, the target current value is determined to be a second target current value according to the second trigger condition;

[0169] When the detection module 10 detects that the first trigger condition and the second trigger condition are triggered at the same time, the first target current value is determined according to the first trigger condition, the second target current value is determined according to the second trigger condition, and the minimum value of the first target current value and the second target current value is determined as the target current value.

[0170] In some embodiments, the preset trigger condition is divided into at least a first trigger condition and a second trigger condition, the first trigger condition is a voltage trigger condition or a temperature trigger condition, the second trigger condition is a temperature trigger condition or a voltage trigger condition, and the determination module 20 is further configured to:

[0171] When the detection module 10 detects that the voltage trigger condition is triggered, it determines that the target control strategy matching the voltage trigger condition is a constant voltage control mode;

[0172] When the detection module 10 detects that the temperature trigger condition is triggered, it determines that the target control strategy matching the temperature trigger condition is a time control mode;

[0173] When the detection module 10 detects that the voltage trigger condition and the temperature trigger condition are triggered at the same time, it determines that the target control strategy is one of a constant voltage control mode and a time control mode.

[0174] In some embodiments, the determination module 20 is further configured to: determine an initial current value when a preset trigger condition is triggered;

[0175] The control module 30 is further configured to:

[0176] The charging current is regulated step by step from the initial current value to the target current value.

[0177] In some embodiments, the control module 30 is further configured to:

[0178] Determining a step length for adjusting the initial current value to the target current value, wherein the step length is a voltage step length or a current step length;

[0179] Determining a time step for achieving each of the step steps;

[0180] According to the step size and the time step size, the charging current is regulated from the initial current value to the target current value.

[0181] In some embodiments, the determining module 20 is further configured to:

[0182] According to the principle of equal time step length, determine the time step length to achieve each step length; or

[0183] According to the principle of exponential growth of time step, the time step for achieving each step is determined.

[0184] In some embodiments, the determining module 20 is further configured to:

[0185] The time step for implementing each step length is determined according to the temperature range of the battery temperature during regulation, wherein different temperature ranges correspond to different time step selection principles.

[0186] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0187] In practical applications, the specific structures of the above-mentioned detection module 10, determination module 20 and control module 30 can be implemented by a central processing unit (CPU, Central Processing Unit), a microprocessor (MCU, Micro Controller Unit), a digital signal processor (DSP, Digital Signal Processing) or a programmable logic device (PLC, Programmable Logic Controller) in the charging control device or the equipment to which the charging control device belongs.

[0188] The charging control device described in this embodiment may be arranged in a terminal or a device capable of charging the terminal, such as a charger device.

[0189] Those skilled in the art should understand that the functions of each processing module in the charging control device of the embodiment of the present disclosure can be understood with reference to the relevant description of the aforementioned charging control method. Each processing module in the charging control device of the embodiment of the present disclosure can be realized by an analog circuit that realizes the functions described in the embodiment of the present disclosure, or can be realized by running software that executes the functions described in the embodiment of the present disclosure on a terminal.

[0190] The charging control device described in the embodiment of the present disclosure makes the current regulation during the charging process more flexible and has better performance during the current regulation transition.

[0191] The embodiment of the present disclosure also records a charging control device, which includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the program, the charging control method provided by any one of the aforementioned technical solutions is implemented.

[0192] As an implementation manner, when the processor executes the program, the following is achieved:

[0193] When it is detected that a preset trigger condition is triggered, determining a target current value;

[0194] Determine the target control strategy corresponding to the preset trigger condition;

[0195] The charging current is regulated to the target current value based on the target regulation strategy.

[0196] As an implementation manner, when the processor executes the program, the following is achieved:

[0197] In the process of regulating the charging current to a first target current value according to a first target regulation strategy based on a first trigger condition, if it is detected that a second trigger condition is triggered, determining a second target current value according to a second target regulation strategy based on the second trigger condition, and comparing the first target current value with the second target current value to obtain a comparison result;

[0198] It is determined whether to adjust the first target current value to a second target current value according to the comparison result.

[0199] As an implementation manner, when the processor executes the program, the following is achieved:

[0200] If the comparison result indicates that the first target current value is greater than the second target current value, determining to adjust the first target current value to the second target current value;

[0201] If the comparison result indicates that the first target current value is less than or equal to the second target current value, it is determined not to adjust the first target current value to the second target current value.

[0202] As an implementation manner, when the processor executes the program, the following is achieved:

[0203] When it is detected that the first trigger condition is triggered, determining the target current value to be a first target current value according to the first trigger condition;

[0204] When it is detected that the second trigger condition is triggered, determining the target current value to be a second target current value according to the second trigger condition;

[0205] When it is detected that the first trigger condition and the second trigger condition are triggered at the same time, the first target current value is determined according to the first trigger condition, the second target current value is determined according to the second trigger condition, and the minimum value of the first target current value and the second target current value is determined as the target current value.

[0206] As an implementation manner, when the processor executes the program, the following is achieved:

[0207] When it is detected that the voltage trigger condition is triggered, determining that the target control strategy matching the voltage trigger condition is a constant voltage control mode;

[0208] When it is detected that the temperature trigger condition is triggered, determining that the target control strategy matching the temperature trigger condition is a time control mode;

[0209] When it is detected that the voltage trigger condition and the temperature trigger condition are triggered at the same time, it is determined that the target control strategy is one of a constant voltage control mode or a time control mode.

[0210] As an implementation manner, when the processor executes the program, the following is achieved:

[0211] Determine an initial current value when a preset trigger condition is triggered;

[0212] The step of regulating the charging current to the target current value based on the target regulation strategy includes:

[0213] The charging current is regulated step by step from the initial current value to the target current value.

[0214] As an implementation manner, when the processor executes the program, the following is achieved:

[0215] Determining a step length for adjusting the initial current value to the target current value, wherein the step length is a voltage step length or a current step length;

[0216] Determining a time step for achieving each of the step steps;

[0217] According to the step size and the time step size, the charging current is regulated from the initial current value to the target current value.

[0218] As an implementation manner, when the processor executes the program, the following is achieved:

[0219] According to the principle of equal time step length, determine the time step length to achieve each step length; or

[0220] According to the principle of exponential growth of time step, the time step for achieving each step is determined.

[0221] As an implementation manner, when the processor executes the program, the following is achieved:

[0222] The time step for implementing each step length is determined according to the temperature range of the battery temperature during regulation, wherein different temperature ranges correspond to different time step selection principles.

[0223] The charging control device provided in the embodiment of the present application makes the current regulation during the charging process more flexible and has better performance during the current regulation transition.

[0224] The embodiment of the present application also describes a computer storage medium, in which computer executable instructions are stored, and the computer executable instructions are used to execute the charging control method described in the above embodiments. That is, after the computer executable instructions are executed by the processor, the charging control method provided by any of the above technical solutions can be implemented.

[0225] Those skilled in the art should understand that the functions of each program in the computer storage medium of this embodiment can be understood by referring to the relevant description of the charging control method described in the above embodiments.

[0226] Fig.11 1 is a block diagram of an electronic device 800 to which a charging control method is applied according to an exemplary embodiment. For example, the electronic device 800 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0227] Reference Fig.11 The electronic device 800 may include one or more of the following components: a processing component 802 , a memory 804 , a power component 806 , a multimedia component 808 , an audio component 810 , an input / output (I / O) interface 812 , a sensor component 814 , and a communication component 816 .

[0228] The processing component 802 generally controls the overall operation of the electronic device 800, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to complete all or part of the steps of the above-mentioned method. In addition, the processing component 802 may include one or more modules to facilitate the interaction between the processing component 802 and other components. For example, the processing component 802 may include a multimedia module to facilitate the interaction between the multimedia component 808 and the processing component 802.

[0229] The memory 804 is configured to store various types of data to support operations on the electronic device 800. Examples of such data include instructions for any application or method operating on the electronic device 800, contact data, phone book data, messages, pictures, videos, etc. The memory 804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable programmable read only memory (EPROM), programmable read-only memory (PROM), read only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0230] The power component 806 provides power to the various components of the electronic device 800. The power component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the electronic device 800.

[0231] The multimedia component 808 includes a screen that provides an output interface between the electronic device 800 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front camera and / or a rear camera. When the electronic device 800 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera may receive external multimedia data. Each front camera and the rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

[0232] The audio component 810 is configured to output and / or input audio signals. For example, the audio component 810 includes a microphone (MIC), which is configured to receive external audio signals when the electronic device 800 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in the memory 804 or sent via the communication component 816. In some embodiments, the audio component 810 also includes a speaker for outputting audio signals.

[0233] I / O interface 812 provides an interface between processing component 802 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: home button, volume button, start button, and lock button.

[0234] The sensor assembly 814 includes one or more sensors for providing various aspects of status assessment for the electronic device 800. For example, the sensor assembly 814 can detect the open / closed state of the electronic device 800, the relative positioning of the components, such as the display and keypad of the electronic device 800, and the sensor assembly 814 can also detect the position change of the electronic device 800 or a component of the electronic device 800, the presence or absence of contact between the user and the electronic device 800, the orientation or acceleration / deceleration of the electronic device 800, and the temperature change of the electronic device 800. The sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 814 may also include an optical sensor, such as a complementary metal oxide semiconductor (CMOS) or a charge-coupled device (CCD) image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0235] The communication component 816 is configured to facilitate wired or wireless communication between the electronic device 800 and other devices. The electronic device 800 can access a wireless network based on a communication standard, such as Wi-Fi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be based on Radio Frequency Identification (RFID) technology, Infrared Data Association (IrDA) technology, Ultra Wide Band (UWB) technology, Bluetooth (BT) technology and other technologies.

[0236] In an exemplary embodiment, the electronic device 800 can be implemented by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field programmable gate arrays (FPGA), controllers, microcontrollers, microprocessors or other electronic components to execute the above-mentioned charging control method.

[0237] In an exemplary embodiment, a non-transitory computer storage medium including executable instructions is also provided, such as a memory 804 including executable instructions, and the above-mentioned executable instructions can be executed by the processor 820 of the electronic device 800 to complete the above-mentioned method. For example, the non-transitory computer storage medium can be a ROM, a random access memory (Random Access Memory, RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0238] The technical solutions described in the embodiments of the present disclosure can be combined arbitrarily without conflict.

[0239] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed in this disclosure. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0240] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A charging control method, characterized in that: The method comprises: When it is detected that a preset trigger condition is triggered, determining a target current value; Determine the target control strategy corresponding to the preset trigger condition; Regulating the charging current to the target current value based on the target regulation strategy; Determine an initial current value when a preset trigger condition is triggered; regulating the charging current to the target current value based on the target regulation strategy, including: regulating the charging current from the initial current value to the target current value step by step; The step-by-step regulation of the charging current from the initial current value to the target current value includes: determining a step length for regulating the initial current value to the target current value, wherein the step length is a voltage step length or a current step length; determining a time step length for realizing each step length; the time step length of the step length is used to adjust the slope of the charging current change; regulating the charging current from the initial current value to the target current value according to the step length and the time step length; The method of determining the time step for realizing each step size includes: determining the time step for realizing each step size according to the principle of equal time step length; or determining the time step for realizing each step size according to the principle of exponential growth of time step; wherein, the principle of equal time step length is that the time step of each step size is equal; the principle of exponential growth of time step is that the time step of each step size is a variable, and the rate of growth of the variable is proportional to the number of the variables.

2. The charging control method according to claim 1, characterized in that: The preset trigger condition is divided into at least a first trigger condition and a second trigger condition, and the method further includes: In the process of regulating the charging current to a first target current value according to a first target regulation strategy based on a first trigger condition, if it is detected that a second trigger condition is triggered, determining a second target current value according to a second target regulation strategy based on the second trigger condition, and comparing the first target current value with the second target current value to obtain a comparison result; It is determined whether to adjust the first target current value to a second target current value according to the comparison result.

3. The charging control method according to claim 2, characterized in that: The determining whether to adjust the first target current value to a second target current value according to the comparison result includes: If the comparison result indicates that the first target current value is greater than the second target current value, determining to adjust the first target current value to the second target current value; If the comparison result indicates that the first target current value is less than or equal to the second target current value, it is determined not to adjust the first target current value to the second target current value.

4. The charging control method according to claim 1, characterized in that: The preset trigger condition is divided into at least a first trigger condition and a second trigger condition. When it is detected that the preset trigger condition is triggered, determining the target current value includes: When it is detected that the first trigger condition is triggered, determining the target current value to be a first target current value according to the first trigger condition; When it is detected that the second trigger condition is triggered, determining the target current value to be a second target current value according to the second trigger condition; When it is detected that the first trigger condition and the second trigger condition are triggered at the same time, the first target current value is determined according to the first trigger condition, the second target current value is determined according to the second trigger condition, and the minimum value of the first target current value and the second target current value is determined as the target current value.

5. The charging control method according to claim 1, characterized in that: The preset trigger condition is divided into at least a first trigger condition and a second trigger condition, the first trigger condition is a voltage trigger condition or a temperature trigger condition, and the second trigger condition is a temperature trigger condition or a voltage trigger condition. The target control strategy corresponding to the preset trigger condition is determined, including: When it is detected that the voltage trigger condition is triggered, determining that the target control strategy matching the voltage trigger condition is a constant voltage control mode; When it is detected that the temperature trigger condition is triggered, determining that the target control strategy matching the temperature trigger condition is a time control mode; When it is detected that the voltage trigger condition and the temperature trigger condition are triggered at the same time, it is determined that the target control strategy is one of a constant voltage control mode or a time control mode.

6. The charging control method according to claim 1, characterized in that: The step of determining the time step for implementing each step size comprises: The time step for implementing each step length is determined according to the temperature range of the battery temperature during regulation, wherein different temperature ranges correspond to different time step selection principles.

7. A charging control device, characterized in that: The device comprises: A detection module is configured to detect whether a preset trigger condition is met; A determination module is configured to determine a target current value when a preset trigger condition is detected to be triggered; and determine a target control strategy corresponding to the preset trigger condition; a control module, configured to regulate the charging current to the target current value based on the target regulation strategy; The determination module is further configured to: determine an initial current value when a preset trigger condition is triggered; the control module is further configured to: regulate the charging current from the initial current value to the target current value step by step; The control module is further configured to: determine a step length for adjusting the initial current value to the target current value, wherein the step length is a voltage step length or a current step length; determine a time step for implementing each step length; the time step of the step length is used to adjust the slope of the charging current change; and adjust the charging current from the initial current value to the target current value according to the step length and the time step; The determination module is further configured to: determine the time step for implementing each step length according to the principle of equal time step length; or determine the time step for implementing each step length according to the principle of exponential growth of time step length; wherein, the principle of equal time step length is that the time step of each step step is equal; the principle of exponential growth of time step is that the time step of each step step is used as a variable, and the rate of growth of the variable is proportional to the number of the variables.

8. The charging control device according to claim 7, characterized in that: The preset trigger condition is divided into at least a first trigger condition and a second trigger condition, and the determination module is further configured to: In the process of regulating the charging current to a first target current value based on a first target control strategy of a first trigger condition, if the detection module detects that a second trigger condition is triggered, the second target current value is determined based on the second target control strategy of the second trigger condition, and the first target current value and the second target current value are compared to obtain a comparison result; and whether to adjust the first target current value to the second target current value is determined according to the comparison result.

9. The charging control device according to claim 8, characterized in that: The determining module is further configured to: If the comparison result indicates that the first target current value is greater than the second target current value, determining to adjust the first target current value to the second target current value; If the comparison result indicates that the first target current value is less than or equal to the second target current value, it is determined not to adjust the first target current value to the second target current value.

10. The charging control device according to claim 7, characterized in that: The preset trigger condition is divided into at least a first trigger condition and a second trigger condition, and the determination module is further configured to: When the detection module detects that the first trigger condition is triggered, determining the target current value to be a first target current value according to the first trigger condition; When the detection module detects that the second trigger condition is triggered, determining the target current value to be a second target current value according to the second trigger condition; When the detection module detects that the first trigger condition and the second trigger condition are triggered at the same time, the first target current value is determined according to the first trigger condition, the second target current value is determined according to the second trigger condition, and the minimum value of the first target current value and the second target current value is determined as the target current value.

11. The charging control device according to claim 7, characterized in that: The preset trigger condition is divided into at least a first trigger condition and a second trigger condition, the first trigger condition is a voltage trigger condition or a temperature trigger condition, the second trigger condition is a temperature trigger condition or a voltage trigger condition, and the determination module is further configured to: When the detection module detects that the voltage trigger condition is triggered, determining that the target control strategy matching the voltage trigger condition is a constant voltage control mode; When the detection module detects that the temperature trigger condition is triggered, determining that the target control strategy matching the temperature trigger condition is a time control mode; When the detection module detects that the voltage trigger condition and the temperature trigger condition are triggered at the same time, it determines that the target control strategy is one of a constant voltage control mode and a time control mode.

12. The charging control device according to claim 7, characterized in that: The determining module is further configured to: The time step for implementing each step length is determined according to the temperature range of the battery temperature during regulation, wherein different temperature ranges correspond to different time step selection principles.

13. A charging control device, comprising: processor; a memory for storing executable instructions; It is characterized in that the processor is configured to: execute the executable instructions to implement the charging control method according to any one of claims 1 to 6.

14. A computer storage medium storing executable instructions, characterized in that: When the executable instructions are executed by a processor, the processor executes the charging control method according to any one of claims 1 to 6.

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