Charging control method, device, electronic device, and storage medium

Abstract

The present disclosure provides a charging control method, device, electronic device, and storage medium. The method includes: determining the current state parameters of the battery, the battery is charged using the first charging parameters corresponding to the first charging stage defined in the staged charging strategy; analyzing the expected state parameters of the battery after continuing to charge for a preset time according to the current state parameters and the first charging parameters; when the expected state parameters match the second charging stage defined in the staged charging strategy, switching to charging the battery using the second charging parameters corresponding to the second charging stage. This can effectively avoid the problem of overvoltage charging of the battery.

Description

Technical Field

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

[0002] Using a staged charging strategy to charge the battery can increase the charging rate and shorten the charging time. The so-called staged charging means that the battery charging process is divided into multiple charging stages. The battery is charged with different currents in each stage. When the battery charging voltage reaches the charging cut-off voltage corresponding to the current stage, it switches to the next charging stage. Since there is a certain delay in switching the charging stage, the charger will not stop charging the battery during the delay period. The above charging method has an overvoltage problem, which will damage the battery and cause battery abnormalities. Summary of the invention

[0003] The present disclosure provides a charging control method, device, electronic device, and storage medium to avoid overvoltage problems during battery charging.

[0004] Specifically, the present disclosure is achieved through the following technical solutions:

[0005] In a first aspect, a charging control method is provided, the method comprising:

[0006] Determining current state parameters of a battery, wherein the battery is charged using first charging parameters corresponding to a first charging stage defined in a staged charging strategy;

[0007] Analyzing expected state parameters of the battery after continuing charging for a preset time period according to the current state parameters and the first charging parameters;

[0008] When the expected state parameter matches the second charging stage defined in the staged charging strategy, the battery is charged by using a second charging parameter corresponding to the second charging stage.

[0009] Optionally, the current state parameter includes the current remaining capacity; the expected state parameter includes the expected charging voltage;

[0010] Analyzing the expected state parameters includes:

[0011] Determining an expected increase in capacity of the battery after switching the duration of the charging phase of the battery to continue charging with the first charging parameter;

[0012] The expected charging voltage is determined according to the current remaining capacity and the expected increased capacity to determine whether the expected charging voltage matches the second charging stage.

[0013] Optionally, determining the expected charging voltage includes:

[0014] Determining an expected open circuit voltage of the battery after the battery continues to be charged for the preset time period according to the current remaining capacity, the expected increased capacity and an open circuit voltage model of the battery;

[0015] determining a polarization voltage of the battery;

[0016] The expected charging voltage is determined as a sum of the polarization voltage and the expected open circuit voltage.

[0017] Optionally, the method further comprises:

[0018] The current charging voltage of the battery is analyzed according to the current remaining capacity to match the charging stage based on the expected charging voltage and the current charging voltage.

[0019] Optionally, analyzing the current charging voltage of the battery according to the current remaining capacity includes:

[0020] Determining a current open circuit voltage of the battery according to the current remaining capacity and an open circuit voltage model of the battery;

[0021] determining a polarization voltage of the battery;

[0022] The sum of the polarization voltage and the current open circuit voltage is determined as the current charging voltage.

[0023] Optionally, the first charging parameter includes a charging current; the current state parameter further includes an aging parameter of the battery;

[0024] Determining the polarization voltage of the battery, comprising:

[0025] determining a current internal resistance of the battery according to the aging parameter and an aging model of the battery;

[0026] The polarization voltage is determined according to the charging current and the current internal resistance.

[0027] Optionally, switching to charging the battery using a second charging parameter corresponding to the second charging stage includes:

[0028] The second charging parameter is sent to a charger for charging the battery, so that the charger charges the battery according to the second charging parameter.

[0029] Optionally, before sending the second charging parameter to the charger, the method further includes:

[0030] Sending a handshake request to the charger;

[0031] When the handshake information returned by the charger in response to the handshake request is received, the second charging parameter is sent to the charger.

[0032] Optionally, the preset duration is a response duration for switching from the first charging stage to the second charging stage.

[0033] In a second aspect, a charging control device is provided, the device comprising:

[0034] A determination module, used to determine a current state parameter of a battery, wherein the battery is charged using a first charging parameter corresponding to a first charging stage defined in a staged charging strategy;

[0035] An analysis module, configured to analyze expected state parameters of the battery after continuing charging for a preset time period according to the current state parameters and the first charging parameters;

[0036] A switching module is used to switch to charging the battery using a second charging parameter corresponding to the second charging stage when the expected state parameter matches the second charging stage defined in the staged charging strategy.

[0037] Optionally, the current state parameter includes the current remaining capacity; the expected state parameter includes the expected charging voltage;

[0038] The analysis module is specifically used for:

[0039] Determining an expected increase in capacity of the battery after switching the duration of the charging phase of the battery to continue charging with the first charging parameter;

[0040] The expected charging voltage is determined according to the current remaining capacity and the expected increased capacity to determine whether the expected charging voltage matches the second charging stage.

[0041] Optionally, when determining the expected charging voltage, the analysis module is used to:

[0042] Determining an expected open circuit voltage of the battery after the battery continues to be charged for the preset time period according to the current remaining capacity, the expected increased capacity and an open circuit voltage model of the battery;

[0043] determining a polarization voltage of the battery;

[0044] The expected charging voltage is determined as a sum of the polarization voltage and the expected open circuit voltage.

[0045] Optionally, the analysis module is further used for:

[0046] The current charging voltage of the battery is analyzed according to the current remaining capacity to match the charging stage based on the expected charging voltage and the current charging voltage.

[0047] Optionally, when analyzing the current charging voltage of the battery according to the current remaining capacity, the analyzing module is used to:

[0048] Determining a current open circuit voltage of the battery according to the current remaining capacity and an open circuit voltage model of the battery;

[0049] determining a polarization voltage of the battery;

[0050] The sum of the polarization voltage and the current open circuit voltage is determined as the current charging voltage.

[0051] Optionally, the first charging parameter includes a charging current; the current state parameter further includes an aging parameter of the battery;

[0052] When determining the polarization voltage of the battery, the analysis module is used to:

[0053] determining a current internal resistance of the battery according to the aging parameter and an aging model of the battery;

[0054] The polarization voltage is determined according to the charging current and the current internal resistance.

[0055] Optionally, the switching module is specifically used to:

[0056] The second charging parameter is sent to a charger for charging the battery, so that the charger charges the battery according to the second charging parameter.

[0057] Optionally, the device further comprises:

[0058] A sending module, used for sending a handshake request to the charger;

[0059] A receiving module is configured to send the second charging parameter to the charger upon receiving the handshake information returned by the charger in response to the handshake request.

[0060] Optionally, the preset duration is a response duration for switching from the first charging stage to the second charging stage.

[0061] According to a third aspect, an electronic device is provided, including:

[0062] processor;

[0063] a memory for storing processor-executable instructions;

[0064] Wherein, the processor is configured to execute the instructions to implement any of the charging control methods described above.

[0065] In a fourth aspect, a computer-readable storage medium is provided, on which a computer program is stored, and when the program is executed by a processor, the steps in any of the charging control methods described above are implemented.

[0066] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

[0067] By detecting the current state parameters of the battery in real time during the charging process, it is possible to analyze whether the battery has an overvoltage risk based on the current state parameters of the battery and the charging parameters. If there is an overvoltage risk, the charging stage of the battery is switched in time. Compared with switching the charging stage only when the battery's charging voltage reaches the charging cut-off voltage corresponding to the current charging stage, this can effectively avoid charging overvoltage problems caused by switching delays and prevent damage to the battery.

[0068] 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

[0069] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0070] Figure 1 is a flow chart of a charging control method shown in an exemplary embodiment of the present disclosure;

[0071] Figure 2 is a flow chart showing a method of determining an expected charging voltage according to an exemplary embodiment of the present disclosure;

[0072] Figure 3 is a flow chart of another charging control method shown in an exemplary embodiment of the present disclosure;

[0073] Figure 4 is a module schematic diagram of a charging control device shown in an exemplary embodiment of the present disclosure;

[0074] Figure 5 It is a block diagram of an electronic device for charging control shown in an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0075] 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, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0076] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. 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.

[0077] It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, such 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 present disclosure, 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 word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0078] Using a staged charging strategy to charge the battery can increase the charging rate and shorten the charging time. The so-called staged charging means that the battery charging process is divided into multiple charging stages, and the battery is charged with a different current or voltage in each stage.

[0079] The following shows the charging parameters of a staged charging strategy, which divides the battery charging process into 5 stages as an example:

[0080] In charging stage a, the charging current is 1.67A and the charging cut-off voltage is 3.48±0.02V;

[0081] Charging stage b, charging current is 8A, charging cut-off voltage is 3.76±0.02V;

[0082] Charging stage c, charging current is 7A, charging cut-off voltage is 3.86±0.02V;

[0083] Charging stage d, charging current is 6A, charging cut-off voltage is 4.11±0.02V;

[0084] In charging stage e, the charging current is 1.67A and the charging cut-off voltage is 4.30±0.02V.

[0085] First, charge the battery with the charging parameters of charging stage a (charging current is 1.67A). When the battery voltage reaches 3.48±0.02V, switch to charging stage b, and continue to charge the battery with the charging parameters of charging stage b (charging current is 8A). Until the battery voltage reaches 3.76±0.02V, switch to charging stage c, and continue to charge the battery with the charging parameters of charging stage c (charging current is 7A), and so on.

[0086] During the entire charging process, the battery needs to communicate with the charger and adjust the voltage and current values ​​of the charger to switch the charging stage. Due to the limitations of hardware and charging protocols, there is a certain delay in switching the charging stage. During this delay, the charger will not stop charging the battery, which will make the battery's charging voltage greater than the charging cut-off voltage of the battery's current stage. That is, the above charging method has an overvoltage problem, which will damage the battery and cause battery abnormalities.

[0087] Based on the above situation, an embodiment of the present disclosure provides a charging control method. In the process of charging the battery using a staged charging strategy, it is determined in real time whether the battery will have an overvoltage risk. If the judgment result is that there may be an overvoltage risk, the charging stage of the battery is switched in time, and the battery is charged using different charging parameters to avoid damage to the battery due to charging overvoltage problems.

[0088] Next, the embodiments of the present disclosure are described in detail.

[0089] Figure 1 This is a flow chart of a charging control method shown in an exemplary embodiment of the present disclosure, which is applicable to charging batteries of terminal devices such as mobile phones and tablet computers, and is also applicable to charging power batteries of new energy vehicles. Figure 1 , the method may include the following steps:

[0090] Step 101: Determine current state parameters of a battery being charged.

[0091] In step 101, a staged charging strategy is used to charge the battery. In the staged charging strategy, multiple charging stages can be defined according to actual needs, and each charging stage corresponds to a set of charging parameters, which may include but are not limited to charging current, charging cut-off voltage, etc.

[0092] For the sake of distinction, the current charging stage of the battery is referred to as the first charging stage, and the next charging stage of the battery is referred to as the second charging stage.

[0093] The current state parameters of the battery are the state parameters of the battery obtained during the process of charging the battery using the charging parameters corresponding to the first charging stage. The current state parameters can be recorded and detected by the battery management chip of the battery, and may include but are not limited to the current charging voltage of the battery, the current remaining capacity of the battery, the number of cycle charging times related to battery aging, the battery temperature and other parameters.

[0094] Step 102: Analyze the expected state parameters of the battery after continuing charging for a preset time period according to the current state parameters and the first charging parameters.

[0095] The preset time length may be a response time length for switching from the first charging stage to the second charging stage.

[0096] In one embodiment, if the charging current corresponding to each charging stage defined in the staged charging strategy decreases (or increases) in sequence, the charging stage of the battery can be matched based on an expected state parameter, which is an expected charging voltage of the battery after the battery continues to be charged for a preset period of time. In step 102, the expected charging voltage of the battery needs to be determined.

[0097] See also Figure 2 , the following describes the process of determining the expected charging voltage:

[0098] Step 102-1: Determine the expected increased capacity of the battery after the battery is continuously charged for a preset time period using a first charging parameter.

[0099] Assuming that the charging current corresponding to the first charging parameter is I1, the expected increase in capacity can be determined according to I1×Δt, where Δt represents a preset time duration.

[0100] If the battery management chip can record the charging stage of the battery, the charging current I1 can be determined according to the current charging stage of the battery recorded by the battery management chip, that is, the charging current corresponding to the charging stage defined in the staged charging strategy is used as the current charging current of the battery. Taking the staged charging strategy that defines 5 charging stages as an example, if the battery management chip records that the battery is currently in charging stage c, and the charging current corresponding to charging stage c defined in the staged charging strategy is 7A, it can be determined that I1 = 7A.

[0101] If the battery management chip does not record the charging stage of the battery, the charging current I1 can be determined based on the current charging voltage of the battery. Specifically, the battery management chip can detect the current charging voltage of the battery, and determine the stage corresponding to the charging cut-off voltage defined in the staged charging strategy that matches the charging voltage as the current stage of the battery, and use the charging current corresponding to the stage as the current charging current of the battery. Taking the above-mentioned staged charging strategy that defines 5 charging stages as an example, if the battery management chip detects that the current charging voltage of the battery is 3.8V, within the range of the charging cut-off voltage of 3.76±0.02V, it can be determined that the current charging stage of the battery is charging stage b, and the charging current corresponding to charging stage b defined in the staged charging strategy is determined as the current charging current of the battery, that is, I1=8A.

[0102] Step 102-2: Determine the expected charging voltage according to the current remaining capacity and the expected increased capacity.

[0103] Here is a calculation to determine the expected charging voltage:

[0104] E1=V ocv1 +I1*R1;

[0105] Where E1 is the expected charging voltage, V ocv1 It indicates the expected open circuit voltage of the battery after the battery is charged for a preset time. The expected open circuit voltage is related to the current remaining capacity and the expected increased capacity. I1*R1 indicates the polarization voltage of the battery. I1 indicates the current charging current of the battery. R1 indicates the current internal resistance of the battery.

[0106] In one embodiment, V ocv1 It is determined by the current remaining capacity, the expected increased capacity and the open circuit voltage model of the battery. Specifically, the sum of the current remaining capacity C1 and the expected increased capacity I1×Δt of the battery is input into the open circuit voltage model of the battery, and the open circuit voltage model outputs the expected open circuit voltage V of the battery. ocv1 .

[0107] Among them, the open circuit voltage model can use ultra-low current to charge the battery from 0% to 100% and then discharge it to 0%. In this process, the battery's state of charge SOC and open circuit voltage OCV data are measured, and the state of charge SOC and open circuit voltage OCV data are fitted. The result of the fitting is the open circuit voltage model. The battery's state of charge SOC reflects the remaining power of the battery. SOC = remaining capacity / maximum available capacity. Generally, the battery's factory capacity is taken as the maximum available capacity. In the process of fitting the model, the battery's health status SOH changes, temperature changes, etc. can also be considered to correct the fitting results. The open circuit voltage model can also use the state of charge SOC and open circuit voltage OCV data as training samples and is constructed through machine learning.

[0108] In one embodiment, the current internal resistance R1 of the battery can be determined by some aging parameters related to the aging of the battery and the aging model of the battery. Specifically, the aging parameters are input into the aging model, and the aging model outputs the current internal resistance R1 of the battery.

[0109] The aging model can be obtained by obtaining the internal resistance of the battery under different aging parameters, fitting the aging parameters and the internal resistance, and the fitting result is the aging model. The aging parameters may include but are not limited to the number of charging cycles, battery temperature, remaining battery capacity, usage scenarios, etc. The aging model can also be constructed through machine learning using aging parameters and internal resistance data as training samples.

[0110] In another embodiment, if the charging currents corresponding to the various charging stages defined in the staged charging strategy do not decrease (or increase) in sequence, referring to the above-mentioned staged charging strategy that defines 5 charging stages, the charging current defined therein first increases and then decreases. At this time, stage matching cannot be performed based only on the expected state parameter of the expected charging voltage, and stage matching is required with the help of another expected state parameter, the current charging voltage of the battery.

[0111] In one embodiment, the current charging voltage of the battery can be detected by a battery management chip.

[0112] In another embodiment, the current charging voltage of the battery may be obtained by calculation. A method for determining the current charging voltage is given below:

[0113] E2=V ocv2 +I1*R1;

[0114] Among them, E2 represents the current charging voltage, V ocv2 Indicates the current open circuit voltage of the battery.

[0115] In one embodiment, V ocv2It is determined by the current remaining capacity C1 of the battery and the open circuit voltage model of the battery. Specifically, the current remaining capacity C1 is input into the open circuit voltage model of the battery, and the open circuit voltage model outputs the current open circuit voltage V of the battery. ocv2 .

[0116] The specific implementation process of determining the current charging current I1 and the current internal resistance R1 of the battery is similar to the introduction of step 102 - 2 , and will not be repeated here.

[0117] Step 103: When the expected state parameter matches the second charging stage defined in the staged charging strategy, switch to charging the battery using the second charging parameter corresponding to the second charging stage.

[0118] If the expected state parameter is the expected charging voltage, in step 103, it is determined whether the expected charging voltage falls within the charging cut-off voltage range corresponding to the second charging stage. If it is determined to be yes, it means that the battery is currently being charged with the charging current I1. If the battery is continuously charged with the charging current I1 for Δt, the charging voltage of the battery will exceed the charging cut-off voltage range corresponding to the current charging stage of the battery, and the battery is at risk of overvoltage. Therefore, the charging current I1 cannot be used to charge the battery, and the charging stage of the battery should be switched in time, that is, the battery should be charged with the second charging parameter corresponding to the second charging stage. If it is determined to be no, it means that even if the battery is continuously charged with the charging current I1 for Δt, the charging voltage of the battery will not exceed the charging cut-off voltage range corresponding to the current charging stage of the battery, and there is no risk of overvoltage. The charging current I1 can be used to continue charging the battery.

[0119] If the expected state parameter includes the current charging voltage and the expected charging voltage, in step 103, the matching of the charging stage is determined based on the expected charging voltage and the current charging voltage, that is, it is determined whether the expected charging voltage and the current charging voltage fall into the charging cut-off voltage range corresponding to which charging stage, so as to determine whether it is necessary to switch the stage and which stage to switch to. For example, if the battery is currently charged with the charging parameters corresponding to the first charging stage, and the expected charging voltage and the current charging voltage both fall into the charging cut-off voltage range corresponding to the first charging stage, the battery continues to be charged with the first charging parameters corresponding to the first charging stage; if the current charging voltage falls into the charging cut-off voltage range corresponding to the first charging stage, and the expected charging voltage falls into the charging cut-off voltage range corresponding to the second charging stage, the charging stage of the battery needs to be switched from the first charging stage to the second charging stage, and the battery is charged with the charging parameters corresponding to the second charging stage.

[0120] The charging control method of the disclosed embodiment can analyze whether the battery has an overvoltage risk based on the current state parameters of the battery and the charging parameters by detecting the current state parameters of the battery in real time during the charging process. If there is an overvoltage risk, the charging stage of the battery is switched in time. Compared with switching the charging stage only when the charging voltage of the battery reaches the charging cut-off voltage corresponding to the current charging stage, this can effectively avoid the charging overvoltage problem caused by switching delay and prevent damage to the battery.

[0121] Figure 3 FIG. 1 is a flow chart of another charging control method shown in an exemplary embodiment of the present disclosure. In this embodiment, the process of charging the battery using a staged charging strategy is shown through the interaction between the battery and the charger. The figure takes the staged charging strategy as an example to define two charging stages (charging stage A and charging stage B). Figure 3 , the method may include the following steps:

[0122] Step 301: The battery sends the first charging parameter of charging stage A to the charger.

[0123] Among them, the battery generally includes a battery management chip and a battery cell. The battery can send the first charging parameter to the charger through the battery management chip; the battery can also send the first charging parameter to the charger with the help of a terminal device or new energy vehicle using the battery.

[0124] Step 302: The charger charges the battery using a first charging parameter.

[0125] Assume that the first charging parameters of charging stage A are: charging current is 8A, charging cut-off voltage is 4.25V±0.1V;

[0126] The second charging parameters of the charging stage B are as follows: the charging current is 6A, and the charging cut-off voltage is 4.35V±0.1V.

[0127] In step 302 , the charger charges the battery cells using a charging current of 8A.

[0128] Step 303: The battery determines the current state parameters of the battery during the charging process, and analyzes the expected state parameters of the battery after continuing to charge for a preset time period based on the current state parameters and the first charging parameters.

[0129] The specific implementation process of step 303 is similar to that of step 101 and step 102, and will not be repeated here.

[0130] Step 304: The battery determines whether the expected state parameters match charging stage B.

[0131] The following takes the stage matching based on the two expected state parameters of the expected charging voltage and the current charging voltage of the battery as an example to illustrate the matching process.

[0132] Assume that according to the current state parameters of the battery, the first charging parameters and the formula E1=V ocv1 +I1*R1,E2=V ocv2 +I1*R1 determines that the expected charging voltage E1 and the current charging voltage E2 of the battery do not exceed the charging cut-off voltage range corresponding to the charging stage A, then no action is taken, and the charger continues to charge the battery with a charging current of 8A.

[0133] Assume that according to the current state parameters of the battery, the first charging parameters and the formula E1=V ocv1 +I1*R1,E2=V ocv2 +I1*R1 determines that the expected charging voltage E1 of the battery is greater than the charging cut-off voltage range corresponding to the charging stage A, and falls within the charging cut-off voltage range corresponding to the charging stage B. Even if the current charging voltage E2 does not reach the charging cut-off voltage corresponding to the charging stage A, the battery will execute step 305 to send the second charging parameter to the charger to trigger the charger to charge the battery using the second charging parameter.

[0134] Step 305: The battery sends the second charging parameter to the charger.

[0135] Step 306: The charger charges the battery using the second charging parameter.

[0136] Taking the charging parameters of the charging stage defined in step 302 as an example, in step 305, if the charger receives the second charging parameters, the battery is charged using a charging current of 6A.

[0137] In one embodiment, before step 301, the battery may also first determine the type of charger to determine whether the charger supports a private protocol, that is, whether it supports switching of charging stages according to current state parameters and charging parameters of the battery.

[0138] Specifically, the battery can send a handshake request to the charger. If the battery does not receive the handshake information returned by the charger in response to the handshake request within a preset time period, it means that the charger does not support the private protocol, and the battery is charged in a traditional manner. If the battery receives the handshake information returned by the charger in response to the handshake request within a preset time period, it means that the charger supports the private protocol, and the charging control method of the embodiment of the present disclosure can be used to charge the battery.

[0139] The charging control method of the disclosed embodiment pre-analyzes the expected charging voltage of the battery after the response time of switching the battery to the continued charging stage during the charging process, and then determines whether there is an overvoltage risk. The method follows the principle of calculation first, judgment, and then action to ensure that the voltage during the charging process does not exceed the set charging cut-off voltage due to the response time of switching the charging stage, causing safety problems such as battery overvoltage.

[0140] Corresponding to the aforementioned charging control method embodiment, the present disclosure also provides an embodiment of a charging control device.

[0141] Figure 4 : is a module schematic diagram of a charging control device shown in an exemplary embodiment of the present disclosure, and the device may include:

[0142] A determination module 41, used to determine a current state parameter of a battery, wherein the battery is charged using a first charging parameter corresponding to a first charging stage defined in a staged charging strategy;

[0143] An analysis module 42, configured to analyze expected state parameters of the battery after continued charging for a preset time period according to the current state parameters and the first charging parameters;

[0144] The switching module 43 is used to switch to charging the battery using the second charging parameter corresponding to the second charging stage when the expected state parameter matches the second charging stage defined in the staged charging strategy.

[0145] Optionally, the current state parameter includes the current remaining capacity; the expected state parameter includes the expected charging voltage;

[0146] The analysis module is specifically used for:

[0147] Determining an expected increase in capacity of the battery after switching the duration of the charging phase of the battery to continue charging with the first charging parameter;

[0148] The expected charging voltage is determined according to the current remaining capacity and the expected increased capacity to determine whether the expected charging voltage matches the second charging stage.

[0149] Optionally, when determining the expected charging voltage, the analysis module is used to:

[0150] Determining an expected open circuit voltage of the battery after the battery continues to be charged for the preset time period according to the current remaining capacity, the expected increased capacity and an open circuit voltage model of the battery;

[0151] determining a polarization voltage of the battery;

[0152] The expected charging voltage is determined as a sum of the polarization voltage and the expected open circuit voltage.

[0153] Optionally, the analysis module is further used for:

[0154] The current charging voltage of the battery is analyzed according to the current remaining capacity to match the charging stage based on the expected charging voltage and the current charging voltage.

[0155] Optionally, when analyzing the current charging voltage of the battery according to the current remaining capacity, the analyzing module is used to:

[0156] Determining a current open circuit voltage of the battery according to the current remaining capacity and an open circuit voltage model of the battery;

[0157] determining a polarization voltage of the battery;

[0158] The sum of the polarization voltage and the current open circuit voltage is determined as the current charging voltage.

[0159] Optionally, the first charging parameter includes a charging current; the current state parameter further includes an aging parameter of the battery;

[0160] When determining the polarization voltage of the battery, the analysis module is used to:

[0161] determining a current internal resistance of the battery according to the aging parameter and an aging model of the battery;

[0162] The polarization voltage is determined according to the charging current and the current internal resistance.

[0163] Optionally, the switching module is specifically used to:

[0164] The second charging parameter is sent to a charger for charging the battery, so that the charger charges the battery according to the second charging parameter.

[0165] Optionally, the device further comprises:

[0166] A sending module, used for sending a handshake request to the charger;

[0167] A receiving module is configured to send the second charging parameter to the charger upon receiving the handshake information returned by the charger in response to the handshake request.

[0168] Optionally, the preset duration is a response duration for switching from the first charging stage to the second charging stage.

[0169] For the device embodiments, since they basically correspond to the method embodiments, the relevant parts can refer to the partial description of the method embodiments. The device embodiments described above are only schematic, wherein 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 modules may be selected according to actual needs to achieve the purpose of the disclosed solution. A person of ordinary skill in the art can understand and implement it without paying any creative work.

[0170] Figure 5 1 is a block diagram of an electronic device for charging control according to an embodiment of the present disclosure. The device 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.

[0171] like Figure 5 As shown, the device 500 may include one or more of the following components: a processing component 502, a memory 504, a power component 506, a multimedia component 508, an audio component 510, an input / output (I / O) interface 512, a sensor component 514, and a communication component 516. The device also includes an antenna module (for example, which can be connected to the communication component 516), and the antenna module includes: a radiator, a grounding point, a feeding end, and a resonant circuit. Among them, the radiator includes an open end, and the grounding point is determined on the radiator. The feeding end is electrically connected to a first connection point on the radiator. The first end of the resonant circuit is electrically connected to the first connection point, the second end of the resonant circuit is grounded, and the resonant circuit includes an adjustable unit. The distance from the first connection point to the open end is less than the distance from the first connection point to the grounding point.

[0172] The processing component 502 generally controls the overall operation of the device 500, such as operations associated with determining the current state parameters of the battery, parameter calculations, and data communication operations. The processing component 502 may include one or more processors 520 to execute instructions to complete all or part of the steps of the above-mentioned method. In addition, the processing component 502 may include one or more modules to facilitate the interaction between the processing component 502 and other components.

[0173] The memory 504 is configured to store various types of data to support operations on the device 500. Examples of such data include instructions for any application or method operating on the device 500, device state parameters, etc. The memory 504 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.

[0174] Power supply component 506 provides power to various components of device 500. Power supply component 506 may include a power management system, one or more batteries, and other components associated with generating, managing, and distributing power for device 500.

[0175] The multimedia component 508 includes a screen that provides an output interface between the device 500 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 a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation.

[0176] The audio component 510 is configured to output and / or input audio signals. For example, the audio component 510 includes a microphone (MIC), and when the device 500 is in an operating mode, such as a call mode, a recording mode, and a speech recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 504 or sent via the communication component 516. In some embodiments, the audio component 510 also includes a speaker for outputting audio signals.

[0177] I / O interface 512 provides an interface between processing component 502 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: a home button, a volume button, a start button, and a lock button.

[0178] The sensor assembly 514 includes one or more sensors for providing various aspects of status assessment for the device 500. For example, the sensor assembly 514 can detect the open / closed state of the device 500, the relative positioning of components, such as the display and keypad of the device 500, and the sensor assembly 514 can also detect the position change of the device 500 or a component of the device 500, the presence or absence of user contact with the device 500, the orientation or acceleration / deceleration of the device 500, and the temperature change of the device 500. The sensor assembly 514 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 514 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 514 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0179] The communication component 516 is configured to facilitate wired or wireless communication between the device 500 and other devices. The device 500 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 516 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 516 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0180] In an exemplary embodiment, the device 500 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described in any of the above embodiments.

[0181] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 504 including instructions, which can be executed by a processor 520 of the device 500 to perform the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0182] The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure shall be included in the scope of protection of the present disclosure.

Claims

1. A charging control method, characterized in that: The method comprises: Determining current state parameters of a battery, wherein the battery is charged using first charging parameters corresponding to a first charging stage defined in a staged charging strategy; Analyzing the expected state parameters of the battery after continuing charging for a preset time according to the current state parameters and the first charging parameters; the preset time is the response time for switching from the first charging stage to the second charging stage; When the expected state parameter matches the second charging stage defined in the staged charging strategy, switching to charging the battery using a second charging parameter corresponding to the second charging stage; The current state parameter includes the current remaining capacity, and the expected state parameter includes the expected charging voltage; analyzing the expected state parameter includes: Determining an expected increase in capacity of the battery after switching the duration of the charging phase of the battery to continue charging with the first charging parameter; The expected charging voltage is determined according to the current remaining capacity and the expected increased capacity to determine whether the expected charging voltage matches the second charging stage.

2. The charging control method according to claim 1, characterized in that: Determining the expected charging voltage includes: Determining an expected open circuit voltage of the battery after the battery continues to be charged for the preset time period according to the current remaining capacity, the expected increased capacity and an open circuit voltage model of the battery; determining a polarization voltage of the battery; The expected charging voltage is determined as a sum of the polarization voltage and the expected open circuit voltage.

3. The charging control method according to claim 1, characterized in that: The method further comprises: The current charging voltage of the battery is analyzed according to the current remaining capacity to match the charging stage based on the expected charging voltage and the current charging voltage.

4. The charging control method according to claim 3, characterized in that: Analyzing a current charging voltage of the battery according to the current remaining capacity includes: Determining a current open circuit voltage of the battery according to the current remaining capacity and an open circuit voltage model of the battery; determining a polarization voltage of the battery; The sum of the polarization voltage and the current open circuit voltage is determined as the current charging voltage.

5. The charging control method according to claim 2 or 4, characterized in that: The first charging parameter includes a charging current; the current state parameter also includes an aging parameter of the battery; Determining the polarization voltage of the battery, comprising: determining a current internal resistance of the battery according to the aging parameter and an aging model of the battery; The polarization voltage is determined according to the charging current and the current internal resistance.

6. The charging control method according to claim 1, characterized in that: Switching to charging the battery using a second charging parameter corresponding to the second charging stage includes: The second charging parameter is sent to a charger for charging the battery, so that the charger charges the battery according to the second charging parameter.

7. The charging control method according to claim 6, characterized in that: Before sending the second charging parameter to the charger, the method further includes: Sending a handshake request to the charger; When the handshake information returned by the charger in response to the handshake request is received, the second charging parameter is sent to the charger.

8. A charging control device, characterized in that: The device comprises: A determination module, used to determine a current state parameter of a battery, wherein the battery is charged using a first charging parameter corresponding to a first charging stage defined in a staged charging strategy; An analysis module, configured to analyze, based on the current state parameter and the first charging parameter, the expected state parameter of the battery after continuing to charge for a preset time; the preset time being the response time for switching from the first charging stage to the second charging stage; a switching module, configured to switch to charging the battery using a second charging parameter corresponding to the second charging stage when the expected state parameter matches the second charging stage defined in the staged charging strategy; The current state parameter includes the current remaining capacity; the expected state parameter includes the expected charging voltage; and the analysis module is specifically used for: Determining an expected increase in capacity of the battery after switching the duration of the charging phase of the battery to continue charging with the first charging parameter; The expected charging voltage is determined according to the current remaining capacity and the expected increased capacity to determine whether the expected charging voltage matches the second charging stage.

9. The charging control device according to claim 8, characterized in that: When determining the expected charging voltage, the analysis module is used to: Determining an expected open circuit voltage of the battery after the battery continues to be charged for the preset time period according to the current remaining capacity, the expected increased capacity and an open circuit voltage model of the battery; determining a polarization voltage of the battery; The expected charging voltage is determined as a sum of the polarization voltage and the expected open circuit voltage.

10. The charging control device according to claim 8, characterized in that: The analysis module is also used for: The current charging voltage of the battery is analyzed according to the current remaining capacity to match the charging stage based on the expected charging voltage and the current charging voltage.

11. The charging control device according to claim 10, characterized in that: When analyzing the current charging voltage of the battery according to the current remaining capacity, the analyzing module is used to: Determining a current open circuit voltage of the battery according to the current remaining capacity and an open circuit voltage model of the battery; determining a polarization voltage of the battery; The sum of the polarization voltage and the current open circuit voltage is determined as the current charging voltage.

12. The charging control device according to claim 9 or 11, characterized in that: The first charging parameter includes a charging current; the current state parameter also includes an aging parameter of the battery; When determining the polarization voltage of the battery, the analysis module is used to: determining a current internal resistance of the battery according to the aging parameter and an aging model of the battery; The polarization voltage is determined according to the charging current and the current internal resistance.

13. The charging control device according to claim 8, characterized in that: The switching module is specifically used for: The second charging parameter is sent to a charger for charging the battery, so that the charger charges the battery according to the second charging parameter.

14. The charging control device according to claim 13, characterized in that: The device also includes: A sending module, used for sending a handshake request to the charger; A receiving module is configured to send the second charging parameter to the charger upon receiving the handshake information returned by the charger in response to the handshake request.

15. An electronic device, characterized in that: include: processor; a memory for storing processor-executable instructions; Wherein, the processor is configured to execute the instructions to implement the charging control method described in any one of claims 1-7.

16. A computer-readable storage medium, characterized in that: A computer program is stored thereon, and when the program is executed by a processor, the steps in the charging control method described in any one of claims 1 to 7 are implemented.

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