Battery charging method, device and storage medium

Abstract

The present disclosure relates to a battery charging method, device and storage medium. The battery charging method comprises: during the stage charging process of the battery, obtaining the current static voltage of the battery in the current charging stage, and determining the maximum charging current that matches the current static voltage; charging the battery according to the maximum charging current. The present disclosure can ensure the charging speed and ensure that the overvoltage protection is not triggered in each charging stage to avoid damage to the battery cell.

Description

Technical Field

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

[0002] In the era of intelligence, electronic products have entered every aspect of human life. The convenience brought by electronic products has made people more and more dependent on them, which has led to people gradually raising their requirements for the performance of electronic product batteries. Large capacity, battery life and safety have become important factors in evaluating battery performance. For this reason, in the successive updates of electronic products, manufacturers tend to make certain improvements to batteries.

[0003] Currently, when electronic products are charged, the increase in current will cause battery overvoltage protection, which will directly lead to damage to the battery cells and may even cause safety accidents in severe cases.

[0004] To this end, the existing solution is to prevent triggering of battery overvoltage protection by reducing the speed of current increase or reducing the stage charging voltage, but this will reduce the charging speed of the battery. Summary of the invention

[0005] In order to overcome the problems existing in the related art, the present disclosure provides a battery charging method, device and storage medium.

[0006] According to a first aspect of an embodiment of the present disclosure, there is provided a battery charging method, comprising:

[0007] During the stage charging process of the battery, the current static voltage of the battery is obtained in the current charging stage, and the maximum charging current matching the current static voltage is determined; the battery is charged according to the maximum charging current.

[0008] In one implementation, determining the maximum charging current that matches the current static voltage includes:

[0009] If the current static voltage is greater than or equal to the charging voltage threshold corresponding to the current charging stage, a maximum charging current matching the current static voltage is determined according to the real-time static voltage and the real-time DC resistance of the battery.

[0010] In another implementation manner, determining the maximum charging current matching the current static voltage according to the real-time static voltage and the real-time DC resistance of the battery includes:

[0011] The real-time DC resistance and the real-time static voltage of the battery are acquired in real time; based on the corresponding relationship among the DC resistance, the static voltage and the maximum charging current, a maximum charging current matching the real-time DC resistance and the real-time static voltage is determined.

[0012] In another embodiment, the corresponding relationship between the DC resistance, the static voltage and the maximum charging current is predetermined in the following manner:

[0013] During stage charging of a battery at different voltages and with different maximum charging currents, in response to the static voltage of the battery being greater than or equal to the charging voltage threshold corresponding to the current charging stage, the system maximum reaction time for triggering overvoltage protection in the current charging stage is determined, and the DC resistance and static voltage of the battery are detected in real time in the current charging stage; based on the detected DC resistance and static voltage, a maximum charging current that matches the DC resistance and the static voltage is determined, wherein the maximum charging current that matches the DC resistance and the static voltage satisfies the requirement that overvoltage protection is not triggered within the system maximum reaction time; a corresponding relationship between the DC resistance, the static voltage, and the maximum charging current is created and saved.

[0014] In yet another embodiment, determining the maximum charging current that matches the DC resistance and the static voltage according to the detected DC resistance and the static voltage includes:

[0015] If a plurality of static voltages correspond to the same DC resistance, the maximum charging current corresponding to each of the plurality of static voltages is determined respectively.

[0016] In yet another embodiment, the determining the maximum charging current that matches the current static voltage includes:

[0017] If the current static voltage is less than the charging voltage threshold corresponding to the current charging stage, the maximum charging current allowed in the current charging stage is determined as the maximum charging current that matches the current static voltage.

[0018] The charging of the battery according to the maximum charging current includes: charging the battery according to the maximum charging current allowed in the current charging stage until the maximum charging voltage of the battery in the current stage is reached.

[0019] According to a second aspect of an embodiment of the present disclosure, there is provided a battery charging device, comprising:

[0020] A determination unit is used to obtain the current static voltage of the battery in the current charging stage during the stage charging process of the battery, and determine the maximum charging current that matches the current static voltage; a charging unit is used to charge the battery according to the maximum charging current.

[0021] In one implementation, the determining unit determines the maximum charging current that matches the current static voltage in the following manner:

[0022] If the current static voltage is greater than or equal to the charging voltage threshold corresponding to the current charging stage, a maximum charging current matching the current static voltage is determined according to the real-time static voltage and the real-time DC resistance of the battery.

[0023] In another implementation manner, the determining unit determines the maximum charging current matching the current static voltage according to the real-time static voltage and the real-time DC resistance of the battery in the following manner:

[0024] The real-time DC resistance and the real-time static voltage of the battery are acquired in real time; based on the corresponding relationship among the DC resistance, the static voltage and the maximum charging current, a maximum charging current matching the real-time DC resistance and the real-time static voltage is determined.

[0025] In another embodiment, the determining unit predetermines the corresponding relationship between the DC resistance, the static voltage and the maximum charging current in the following manner:

[0026] During stage charging of a battery at different voltages and with different maximum charging currents, in response to the static voltage of the battery being greater than or equal to the charging voltage threshold corresponding to the current charging stage, the system maximum reaction time for triggering overvoltage protection in the current charging stage is determined, and the DC resistance and static voltage of the battery are detected in real time in the current charging stage; based on the detected DC resistance and static voltage, a maximum charging current that matches the DC resistance and the static voltage is determined, wherein the maximum charging current that matches the DC resistance and the static voltage satisfies the requirement that overvoltage protection is not triggered within the system maximum reaction time; a corresponding relationship between the DC resistance, the static voltage, and the maximum charging current is created and saved.

[0027] In another embodiment, the determination unit determines the maximum charging current that matches the DC resistance and the static voltage based on the detected DC resistance and the static voltage in the following manner: if there are multiple static voltages corresponding to the same DC resistance, then the maximum charging current corresponding to each of the multiple static voltages is determined separately.

[0028] In yet another implementation manner, the determining unit determines the maximum charging current that matches the current static voltage in the following manner:

[0029] If the current static voltage is less than the charging voltage threshold corresponding to the current charging stage, the maximum charging current allowed in the current charging stage is determined as the maximum charging current that matches the current static voltage.

[0030] The step of charging the battery according to the maximum charging current includes:

[0031] The battery is charged according to the maximum charging current allowed in the current charging stage until the maximum charging voltage of the battery in the current stage.

[0032] According to a third aspect of an embodiment of the present disclosure, there is provided a battery charging device, comprising:

[0033] processor;

[0034] a memory for storing processor-executable instructions;

[0035] The processor is configured to execute the battery charging method described in the first aspect or any one of the embodiments of the first aspect.

[0036] According to a fourth aspect of an embodiment of the present disclosure, a non-temporary computer-readable storage medium is provided. When instructions in the storage medium are executed by a processor of a mobile terminal, the mobile terminal is enabled to execute the battery charging method described in the first aspect or any one of the embodiments of the first aspect.

[0037] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

[0038] The battery charging method provided by the embodiment of the present disclosure obtains the current static voltage of the battery in the current charging stage and determines the maximum charging current that matches the current static voltage during the stage charging process of the battery. Charging the battery according to the maximum charging current that matches the current static voltage can ensure the charging speed and ensure that the overvoltage protection is not triggered in each charging stage to avoid damage to the battery cell.

[0039] 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

[0040] 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.

[0041] Figure 1 is a flow chart of a battery charging method according to an exemplary embodiment;

[0042] Figure 2 is a flow chart of a battery charging method according to an exemplary embodiment;

[0043] Figure 3 is a flow chart of a method for determining a corresponding relationship among a DC resistance, a static voltage and a maximum charging current according to an exemplary embodiment;

[0044] Figure 4is a device block diagram of a battery charging device according to an exemplary embodiment;

[0045] Figure 5 The invention is a device block diagram of a battery charging device according to an exemplary embodiment. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the present application clearer, the embodiments of the present application will be further described in detail below in conjunction with 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 present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the attached claims.

[0047] The battery charging method provided by the present disclosure is applied to the application scenario of charging the battery of electronic devices such as smart phones. High-power and high-current charging is a common scenario for charging the battery of electronic devices. In the high-power and high-current charging scenario, when the battery is charged with a high current in an instant, the voltage rises very quickly, and it will exceed the battery protection voltage in a very short time, causing unnecessary action of the battery protection circuit and even causing irreversible damage to the battery cell.

[0048] In the related art, existing methods such as slowing down the current increase speed or reducing the stage charging voltage are used to avoid triggering overvoltage protection, but this will reduce the charging speed of the electronic device.

[0049] The embodiment of the present disclosure provides a battery charging method. When a battery is charged with a large current, the battery static voltage and DC resistance are monitored and analyzed to charge with the maximum charging current that matches the battery static voltage, which can not only meet the battery's high current charging needs but also avoid battery protection and damage to the battery cell. In this regard, the battery charging method provided by the present disclosure can both ensure the charging speed of the device and avoid triggering overvoltage protection.

[0050] Figure 1 FIG. 1 is a flow chart of a battery charging method according to an exemplary embodiment. Figure 1 As shown, the battery charging method of the present disclosure may include the following steps S101 and S102.

[0051] In step S101, during the stage charging process of the battery, the current static voltage of the battery is obtained in the current charging stage, and the maximum charging current matching the current static voltage is determined.

[0052] In this embodiment, when the device is wired for charging (or wirelessly charged), the battery is charged in stages. During the charging process, the current static voltage of the battery is obtained, and the corresponding maximum charging current is obtained based on the current static voltage.

[0053] The static voltage refers to the voltage measured when the battery is in a state of neither discharging nor charging. In this embodiment, the static voltage of the battery obtained in the current charging stage is referred to as the current static voltage. The maximum charging current can be calculated in real time based on the current static voltage and the DC resistance of the battery, or the correspondence between the static voltage and the maximum charging current stored in advance can be retrieved to obtain the maximum charging current corresponding to the current static voltage.

[0054] The battery charging process can be divided into multiple charging stages based on the characteristics of the battery itself. Different static voltages will correspond to different battery charging stages. Big uses the maximum charging current that matches different static voltages for charging. For example, in the first stage of charging, the maximum charging current corresponding to a static voltage is I1, and the battery is charged with the maximum charging current I1. If the maximum charging current corresponding to a static voltage is I2, the battery is charged with the maximum charging current I2.

[0055] In step S102, the battery is charged according to the maximum charging current.

[0056] In the disclosed embodiment, charging the battery based on the determined maximum charging current can ensure that overvoltage protection is not triggered in the current charging stage, ensuring normal charging, and charging with the maximum charging current of the current stage ensures that the charging speed of the current stage does not decrease.

[0057] As charging progresses, the charging stage of the battery will change. When charging enters the next stage from the current stage, it will still be charged with the maximum charging current in the next stage that matches the current static voltage. That is, the battery is charged with the maximum charging current that matches the current static voltage throughout the charging process to ensure the battery charging speed.

[0058] The battery charging method provided by the embodiment of the present disclosure obtains the current static voltage of the battery in the current charging stage and determines the maximum charging current that matches the current static voltage during the stage charging process of the battery. Charging the battery according to the maximum charging current that matches the current static voltage can ensure the charging speed and ensure that the overvoltage protection is not triggered in each charging stage to avoid damage to the battery cell.

[0059] In the disclosed embodiment, the maximum charging current that matches the current static voltage can be determined based on the charging voltage threshold corresponding to the current charging stage. In one example, if the current static voltage is less than the charging voltage threshold corresponding to the current charging stage, the maximum charging current that matches the previous static voltage can be the maximum charging current allowed in the current charging stage. In another example, if the current static voltage is greater than or equal to the charging voltage threshold corresponding to the current charging stage, the maximum charging current that matches the previous static voltage can be the maximum charging current allowed at the current moment calculated based on the static voltage, DC resistance, etc.

[0060] Figure 2 The figure is a flow chart of a battery charging method according to an exemplary embodiment.

[0061] like Figure 2 As shown, the battery charging method of the present disclosure may include the following steps:

[0062] In step S201, during the stage charging process of the battery, the current static voltage of the battery is obtained in the current charging stage.

[0063] During the charging process, the current static voltage of the battery in the current charging stage is detected in real time. The current charging stage can be any charging stage in a plurality of step charging stages divided according to the battery properties.

[0064] For details not given in this step, please refer to S101, which will not be repeated here.

[0065] In step S202, if the current static voltage is less than the charging voltage threshold corresponding to the current charging stage, the maximum charging current allowed in the current charging stage is determined as the maximum charging current that matches the current static voltage.

[0066] In the embodiment of the present disclosure, the maximum charging current allowed in the current charging stage refers to the maximum charging current allowed in the current charging stage determined based on the properties of the battery itself.

[0067] When the current static voltage obtained is less than the charging voltage threshold corresponding to the current charging stage, it indicates that charging can continue with the maximum charging current allowed in this stage. The charging voltage threshold is the threshold value for the charging current change in this stage. Below the charging voltage threshold, charging with the maximum charging current allowed in this stage will not trigger overvoltage protection. When the current static voltage is greater than or equal to the charging voltage threshold corresponding to the current charging stage, step S204 needs to be executed.

[0068] Among them, in the staged charging process, each charging stage corresponds to the maximum charging current allowed in this stage. On this basis, as the static voltage of the battery continues to increase, when the current static voltage of a certain stage has not reached the charging voltage threshold of this stage, charging can still continue with the maximum charging current allowed in this stage.

[0069] In one example, the maximum charging current allowed in each stage may be pre-stored in the system.

[0070] In step S203, the battery is charged according to the maximum charging current allowed in the current charging stage until the maximum charging voltage of the battery in the current stage is reached.

[0071] In the disclosed embodiment, the battery is charged based on the maximum charging current allowed in the current charging stage, and the charging speed is the fastest.

[0072] It should be noted that if the battery is charged with the maximum charging current allowed in the current charging stage within the longest reaction time of the system for triggering overvoltage protection in the current charging stage and the static voltage reaches the maximum charging voltage of this stage, the charging will enter the next stage.

[0073] In the disclosed embodiment, the time from the occurrence of high current charging to the system performing overvoltage protection is called system reaction time. The longest reaction time of the system for triggering overvoltage protection will take effect in each charging stage. That is to say, assuming that the longest reaction time of the system is 5s, then when charging is in the first stage, the system has a reaction time of 5s when charging with the maximum charging current allowed in this stage. When charging exceeds this time and has not entered the next stage, overvoltage protection will be triggered. If charging enters the second stage within 5s, then when charging in the second stage with the maximum charging current allowed in this stage, the system will have another 5s reaction time.

[0074] In step S204, if the current static voltage is greater than or equal to the charging voltage threshold corresponding to the current charging stage, the real-time DC resistance and the real-time static voltage of the battery are acquired in real time.

[0075] In the embodiment of the present disclosure, when charging with the maximum charging current allowed in the current charging stage makes the static voltage of the battery greater than or equal to the charging voltage threshold of the stage, it is necessary to determine the maximum charging current allowed at the current moment based on the actual detection data of the battery-related parameters. The related parameters include the real-time DC resistance and the real-time static voltage currently obtained in real time.

[0076] During the battery charging process, the resistance value will change due to the temperature of the battery itself, and the static voltage of the battery will also be different at different times. The corresponding maximum charging current can be accurately obtained based on the real-time DC resistance and real-time static voltage obtained in real time, which can avoid overvoltage protection caused by inaccurate current results due to data errors.

[0077] In step S205 , based on the corresponding relationship among the DC resistance, the static voltage, and the maximum charging current, a maximum charging current that matches the real-time DC resistance and the real-time static voltage is determined.

[0078] When the current static voltage is greater than or equal to the charging voltage threshold corresponding to the current charging stage, the maximum charging current that will not cause overvoltage protection is measured through a pre-conducted experiment. The corresponding relationship between the DC resistance, static voltage and maximum charging current obtained based on the experiment is pre-stored in the system. The corresponding relationship can be in the form of a table or function. Based on the real-time DC resistance and real-time static voltage obtained in real time, the maximum charging current corresponding to both is found from the corresponding relationship.

[0079] Under different DC resistances, different static voltages of the battery all correspond to the maximum charging current. Therefore, when searching in the corresponding relationship, the search result must match both the real-time DC resistance and the real-time static voltage.

[0080] In step S206, the battery is charged according to the maximum charging current.

[0081] Charging the battery based on the determined maximum charging current can ensure that overvoltage protection is not triggered in the current charging stage, ensuring normal charging, and charging with the maximum charging current in the current stage ensures that the charging speed in the current stage does not decrease.

[0082] The present disclosure embodiment will now illustrate the battery charging method involved in the present embodiment with reference to an example. In one example, assuming that the longest reaction time of the system triggering the overvoltage protection is t, the battery charging process is divided into V1, V2…V n The maximum charging currents of these N charging stages are I1, I2…I n Among them, I1, I2…I n The maximum charging current allowed in each charging stage is determined based on the characteristics of the battery itself.

[0083] Assume that the battery is currently in the first charging stage (that is, stage V1). The charging voltage threshold of the first charging stage is V z If the current real-time static voltage of the battery is V a (V a <V1), then, when V a <V zThe battery will be charged with the maximum charging current I1 allowed in the first charging stage. As the charging progresses, the voltage continues to rise. If the battery static voltage V a When the cut-off voltage V1 of the first charging stage is reached, the charging will enter the second charging stage, which is the V2 stage.

[0084] If the battery static voltage V a The charging voltage threshold V of the first charging stage is reached z , that is, V z ≤V a <V1, the DC resistance and static voltage obtained in real time should be calculated when the voltage is greater than the threshold V z The maximum charging current I that will not trigger the overvoltage protection b , and I b Charge the battery.

[0085] By analogy, if the V1 segment is divided more finely, this stage will correspond to I1, I b …I m Multiple maximum charge currents.

[0086] And so on, V2…V n Each charging stage will correspond to multiple maximum charging currents, and the charging process is the same as that of the V1 stage.

[0087] Different maximum charging currents are used in different charging stages to ensure charging speed without triggering overvoltage protection, making charging safe and efficient.

[0088] The battery charging method provided in this embodiment, during the stage charging process of the battery, first obtains the current static voltage of the battery in the current charging stage, and uses different maximum charging currents for charging based on the comparison result of the obtained current static voltage and the charging voltage threshold corresponding to the current charging stage. Specifically, if the current static voltage is less than the charging voltage threshold corresponding to the current charging stage, the battery is charged according to the maximum charging current allowed in the current charging stage; if the current static voltage is greater than or equal to the charging voltage threshold corresponding to the current charging stage, it is necessary to obtain the real-time DC resistance and real-time static voltage of the battery in real time, and determine the maximum charging current matched by the real-time data based on the corresponding relationship between the DC resistance, the static voltage and the maximum charging current, and charge the battery with the matched maximum charging current. When the battery is charged with the maximum charging current allowed in the current charging stage and reaches the charging voltage threshold, in order not to cause overvoltage protection, this embodiment determines the maximum current that can be safely charged according to the real-time data of the DC resistance and static voltage of the battery, and charges it accordingly. Charging with the maximum current can be guaranteed under different charging conditions, ensuring the charging speed.

[0089] The following embodiment of the present disclosure will illustrate the process of determining the corresponding relationship between the DC resistance, the static voltage and the maximum charging current.

[0090] Figure 3 FIG. 1 is a flow chart showing a method for determining a corresponding relationship between a DC resistance, a static voltage, and a maximum charging current according to an exemplary embodiment. Figure 3 As shown, the method for determining the corresponding relationship between the DC resistance, the static voltage and the maximum charging current disclosed in the present invention may include the following steps:

[0091] In step S301, during the process of stage charging the battery at different voltages and with different maximum charging currents, in response to the static voltage of the battery being greater than or equal to the charging voltage threshold corresponding to the current charging stage, the maximum system reaction time for triggering overvoltage protection in the current charging stage is determined, and the DC resistance and static voltage of the battery are detected in real time in the current charging stage.

[0092] The battery is charged in stages with the maximum charging current, and the maximum charging current of each stage is different. When the static voltage of the battery is less than the charging voltage threshold corresponding to the current charging stage, it is charged with the maximum charging current allowed in this stage determined based on the characteristics of the battery itself. As the charging progresses, the static voltage increases; if it is still charged with the maximum charging current allowed in this stage at the end of the longest reaction time of the system, the overvoltage protection will be triggered; when the reaction time is not reached and the static voltage of the battery is greater than or equal to the charging voltage threshold corresponding to this stage, the system detects the DC resistance and static voltage of the battery in real time.

[0093] In step S302, a maximum charging current that matches the DC resistance and the static voltage is determined based on the detected DC resistance and the static voltage, wherein the maximum charging current that matches the DC resistance and the static voltage is sufficient to not trigger overvoltage protection within the longest reaction time of the system.

[0094] The maximum charging current that can be carried when the static voltage of the battery is greater than or equal to the charging voltage threshold of the current charging stage is calculated by the detected DC resistance and static voltage. The maximum current is the maximum safe current that will not trigger overvoltage protection after the static voltage exceeds the voltage threshold.

[0095] Based on steps S301 and S302 , at least two maximum charging currents corresponding to the current charging stage can be obtained.

[0096] In step S303, a corresponding relationship among the DC resistance, the static voltage and the maximum charging current is created and saved.

[0097] Based on the same steps as the current charging stage, each of the remaining charging stages in the battery charging process can also obtain corresponding at least two maximum charging currents.

[0098] A corresponding relationship is established according to the DC resistance, static voltage and maximum charging current of the battery in each charging stage. The form of the corresponding relationship is not limited, and any form that can show the corresponding relationship between the three is acceptable.

[0099] It should be pointed out in particular that since DC resistance is affected by temperature, the same DC resistance may correspond to multiple sets of static voltages and maximum charging currents in the corresponding relationship. Therefore, when using the corresponding relationship to find the maximum charging current, if the same DC resistance corresponds to multiple static voltages, the maximum charging current corresponding to each of the multiple static voltages must be determined separately.

[0100] In the embodiment of the present disclosure, the following method can be adopted in the process of charging the battery by using the corresponding relationship between the DC resistance, the static voltage and the maximum charging current:

[0101] During the stage charging process of the battery, the current static voltage of the battery is obtained in the current charging stage. If the current static voltage is greater than or equal to the charging voltage threshold corresponding to the current charging stage, the real-time DC resistance and real-time static voltage of the battery are obtained in real time. Based on the corresponding relationship between the DC resistance, the static voltage and the maximum charging current, the maximum charging current that matches the real-time DC resistance and the real-time static voltage is determined.

[0102] When the current static voltage is greater than or equal to the charging voltage threshold corresponding to the current charging stage, the maximum charging current that will not cause overvoltage protection is measured through a pre-conducted experiment. The corresponding relationship between the DC resistance, static voltage and maximum charging current obtained based on the experiment is pre-stored in the system. The corresponding relationship can be in the form of a table or function. Based on the real-time DC resistance and real-time static voltage obtained in real time, the maximum charging current corresponding to both is found from the corresponding relationship.

[0103] Under different DC resistances, different static voltages of the battery correspond to the maximum charging current. Therefore, when searching in the corresponding relationship, the search result must match the real-time DC resistance and the real-time static voltage. The battery is charged according to the maximum charging current that matches the current static voltage.

[0104] Charging the battery based on the determined maximum charging current can ensure that overvoltage protection is not triggered in the current charging stage, ensuring normal charging, and charging with the maximum charging current in the current stage ensures that the charging speed in the current stage does not decrease.

[0105] The battery charging method provided in this embodiment includes the steps of pre-establishing a corresponding relationship: in the process of charging the battery in stages at different voltages and different maximum charging currents, in response to the static voltage of the battery being greater than or equal to the charging voltage threshold corresponding to the current charging stage, determining the maximum system reaction time for triggering overvoltage protection in the current charging stage, and detecting the DC resistance and static voltage of the battery in real time in the current charging stage; determining the maximum charging current that matches the DC resistance and the static voltage based on the detected DC resistance and static voltage, wherein the maximum charging current that matches the DC resistance and the static voltage satisfies the requirement of not triggering overvoltage protection within the system's longest reaction time, and creating and saving the corresponding relationship between the DC resistance, the static voltage, and the maximum charging current. Pre-determining the corresponding relationship based on real-time data ensures that charging can be performed with the accurate maximum current in the subsequent actual charging process, reducing the possibility of false triggering of overvoltage protection.

[0106] Based on the same concept, an embodiment of the present disclosure also provides a battery charging device.

[0107] It is understandable that the battery charging device provided in the embodiment of the present disclosure includes hardware structures and / or software modules corresponding to the execution of each function in order to realize the above functions. In combination with the units and algorithm steps of each example disclosed in the embodiment of the present disclosure, the embodiment of the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be greater than the scope of the technical solution of the embodiment of the present disclosure.

[0108] Figure 4 The figure is a block diagram of a battery charging device according to an exemplary embodiment.

[0109] like Figure 4 As shown, the battery charging device 100 includes a determining unit 110 and a charging unit 120 .

[0110] The determination unit 110 is used to obtain the current static voltage of the battery in the current charging stage during the stage charging process of the battery, and determine the maximum charging current matching the current static voltage;

[0111] The charging unit 120 is used to charge the battery according to the maximum charging current.

[0112] In one implementation, the determination unit 110 determines the maximum charging current that matches the current static voltage in the following manner:

[0113] If the current static voltage is greater than or equal to the charging voltage threshold corresponding to the current charging stage, the maximum charging current matching the current static voltage is determined according to the real-time static voltage and the real-time DC resistance of the battery.

[0114] In another implementation manner, the determination unit 110 determines the maximum charging current matching the current static voltage according to the real-time static voltage and the real-time DC resistance of the battery in the following manner:

[0115] Obtain the real-time DC resistance and real-time static voltage of the battery in real time;

[0116] Based on the corresponding relationship among the DC resistance, the static voltage and the maximum charging current, a maximum charging current that matches the real-time DC resistance and the real-time static voltage is determined.

[0117] In another embodiment, the determination unit 110 predetermines the corresponding relationship between the DC resistance, the static voltage, and the maximum charging current in the following manner:

[0118] During stage charging of the battery at different voltages and different maximum charging currents, in response to the static voltage of the battery being greater than or equal to the charging voltage threshold corresponding to the current charging stage, the maximum system reaction time for triggering overvoltage protection in the current charging stage is determined, and the DC resistance and static voltage of the battery are detected in real time in the current charging stage;

[0119] Determine a maximum charging current that matches the DC resistance and the static voltage according to the detected DC resistance and the static voltage, wherein the maximum charging current that matches the DC resistance and the static voltage satisfies the requirement that the overvoltage protection is not triggered within the longest reaction time of the system;

[0120] Create and save the corresponding relationship between DC resistance, static voltage and maximum charging current.

[0121] In another embodiment, the determination unit 110 determines the maximum charging current that matches the DC resistance and the static voltage according to the detected DC resistance and the static voltage in the following manner:

[0122] If a plurality of static voltages correspond to the same DC resistance, the maximum charging current corresponding to each of the plurality of static voltages is determined respectively.

[0123] In another embodiment, the determination unit 110 determines the maximum charging current matching the current static voltage in the following manner:

[0124] If the current static voltage is less than the charging voltage threshold corresponding to the current charging stage, the maximum charging current allowed in the current charging stage is determined as the maximum charging current matching the current static voltage;

[0125] Charge the battery according to the maximum charging current, including:

[0126] The battery is charged according to the maximum charging current allowed in the current charging stage until the maximum charging voltage of the battery in the current stage.

[0127] 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 again here.

[0128] Figure 5 The invention is a block diagram of a battery charging device according to an exemplary embodiment.

[0129] like Figure 5 As shown, the battery charging 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 .

[0130] The battery charging device 500 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.

[0131] The processing component 502 generally controls the overall operation of the battery charging device 500, such as operations associated with display, phone calls, data communications, camera operations, and recording 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. For example, the processing component 502 may include a multimedia module to facilitate the interaction between the multimedia component 508 and the processing component 502.

[0132] The memory 504 is configured to store various types of data to support the operation of the battery charging device 500. Examples of such data include instructions for any application or method operating on the battery charging device 500, contact data, phone book data, messages, pictures, videos, 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.

[0133] The power assembly 506 provides power to the various components of the battery charging device 500. The power assembly 506 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the battery charging device 500.

[0134] The multimedia component 508 includes a screen that provides an output interface between the battery charging 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 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 508 includes a front camera and / or a rear camera. When the battery charging device 500 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 rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0135] 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 battery charging device 500 is in an operation 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.

[0136] 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.

[0137] The sensor assembly 514 includes one or more sensors for providing various aspects of the status assessment of the battery charging device 500. For example, the sensor assembly 514 can detect the open / closed state of the battery charging device 500, the relative positioning of components, such as the display and keypad of the battery charging device 500, the sensor assembly 514 can also detect the position change of the battery charging device 500 or a component of the battery charging device 500, the presence or absence of user contact with the battery charging device 500, the orientation or acceleration / deceleration of the battery charging device 500, and the temperature change of the battery charging device 500. The sensor assembly 514 can include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 514 can 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 can also include an accelerometer, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0138] The communication component 516 is configured to facilitate wired or wireless communication between the battery charging device 500 and other devices. The battery charging device 500 can access a wireless network based on a communication standard, such as WiFi, 4G or 2G, 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.

[0139] In an exemplary embodiment, the battery charging device 500 can 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 any of the methods described in the above embodiments.

[0140] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 504 including instructions, and the instructions can be executed by the processor 520 of the battery charging device 500 to perform the above method.

[0141] The non-transitory computer-readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

[0142] In the description of the present disclosure, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances. In addition, in the description of the present application, unless otherwise specified, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0143] It will be understood that in the present disclosure, the singular forms "a", "an", "said" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0144] It is further understood that, although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood as requiring the operations to be performed in the specific order shown or in a serial order, or requiring the execution of all the operations shown to obtain the desired results. In certain environments, multitasking and parallel processing may be advantageous.

[0145] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0146] It should be understood that the present disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims. Those skilled in the art will readily come to think of other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. The present application is intended to cover any modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary technical means in the art that are not disclosed in the present disclosure. The description and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0147] It should be understood that the present disclosure is not limited to the exact structures that have 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 disclosure is limited only by the appended claims.

Claims

1. A battery charging method, characterized in that: The method comprises: During the stage charging of the battery, obtaining the current static voltage of the battery in the current charging stage, and determining the maximum charging current matching the current static voltage; charging the battery according to the maximum charging current; The maximum charging current is determined based on the corresponding relationship between the DC resistance, the static voltage and the maximum charging current, and the corresponding relationship is predetermined in the following manner: During stage charging of the battery at different voltages and different maximum charging currents, in response to the static voltage of the battery being greater than or equal to the charging voltage threshold corresponding to the current charging stage, determining the maximum system reaction time for triggering overvoltage protection in the current charging stage, and detecting the DC resistance and static voltage of the battery in real time in the current charging stage; Determine, according to the detected DC resistance and static voltage, a maximum charging current that matches the DC resistance and the static voltage, wherein the maximum charging current that matches the DC resistance and the static voltage satisfies the requirement that overvoltage protection is not triggered within the longest reaction time of the system; Create and save the corresponding relationship between DC resistance, static voltage and maximum charging current.

2. The battery charging method according to claim 1, characterized in that: The determining of the maximum charging current matching the current static voltage comprises: If the current static voltage is greater than or equal to the charging voltage threshold corresponding to the current charging stage, a maximum charging current matching the current static voltage is determined according to the real-time static voltage and the real-time DC resistance of the battery.

3. The battery charging method according to claim 2, characterized in that: The step of determining a maximum charging current matching the current static voltage according to the real-time static voltage and the real-time DC resistance of the battery comprises: Acquire the real-time DC resistance and real-time static voltage of the battery in real time; Based on the corresponding relationship among the DC resistance, the static voltage and the maximum charging current, a maximum charging current matching the real-time DC resistance and the real-time static voltage is determined.

4. The battery charging method according to claim 1, characterized in that: The step of determining, based on the detected DC resistance and static voltage, a maximum charging current that matches the DC resistance and the static voltage comprises: If a plurality of static voltages correspond to the same DC resistance, the maximum charging current corresponding to each of the plurality of static voltages is determined respectively.

5. The battery charging method according to claim 1, characterized in that: The determining of the maximum charging current matching the current static voltage comprises: If the current static voltage is less than the charging voltage threshold corresponding to the current charging stage, the maximum charging current allowed in the current charging stage is determined as the maximum charging current matching the current static voltage; The step of charging the battery according to the maximum charging current includes: The battery is charged according to the maximum charging current allowed in the current charging stage until the maximum charging voltage of the battery in the current stage.

6. A battery charging device, characterized in that: The device comprises: a determination unit, configured to obtain a current static voltage of the battery in a current charging stage during stage charging of the battery, and determine a maximum charging current matching the current static voltage; a charging unit, configured to charge the battery according to the maximum charging current; The maximum charging current is determined based on a corresponding relationship among a DC resistance, a static voltage, and a maximum charging current, and the corresponding relationship is determined by the determining unit in the following manner: During stage charging of the battery at different voltages and different maximum charging currents, in response to the static voltage of the battery being greater than or equal to the charging voltage threshold corresponding to the current charging stage, determining the maximum system reaction time for triggering overvoltage protection in the current charging stage, and detecting the DC resistance and static voltage of the battery in real time in the current charging stage; Determine, according to the detected DC resistance and static voltage, a maximum charging current that matches the DC resistance and the static voltage, wherein the maximum charging current that matches the DC resistance and the static voltage satisfies the requirement that overvoltage protection is not triggered within the longest reaction time of the system; Create and save the corresponding relationship between DC resistance, static voltage and maximum charging current.

7. The battery charging device according to claim 6, characterized in that: The determining unit determines the maximum charging current matching the current static voltage in the following manner: If the current static voltage is greater than or equal to the charging voltage threshold corresponding to the current charging stage, a maximum charging current matching the current static voltage is determined according to the real-time static voltage and the real-time DC resistance of the battery.

8. The battery charging device according to claim 7, characterized in that: The determination unit determines the maximum charging current matching the current static voltage according to the real-time static voltage and the real-time DC resistance of the battery in the following manner: Acquire the real-time DC resistance and real-time static voltage of the battery in real time; Based on the corresponding relationship among the DC resistance, the static voltage and the maximum charging current, a maximum charging current matching the real-time DC resistance and the real-time static voltage is determined.

9. The battery charging device according to claim 6, characterized in that: The determination unit determines the maximum charging current that matches the DC resistance and the static voltage according to the detected DC resistance and the static voltage in the following manner: If a plurality of static voltages correspond to the same DC resistance, the maximum charging current corresponding to each of the plurality of static voltages is determined respectively.

10. The battery charging device according to claim 6, characterized in that: The determining unit determines the maximum charging current matching the current static voltage in the following manner: If the current static voltage is less than the charging voltage threshold corresponding to the current charging stage, the maximum charging current allowed in the current charging stage is determined as the maximum charging current matching the current static voltage; The step of charging the battery according to the maximum charging current includes: The battery is charged according to the maximum charging current allowed in the current charging stage until the maximum charging voltage of the battery in the current stage.

11. A battery charging device, characterized in that: include: processor; a memory for storing processor-executable instructions; Wherein, the processor is configured to: execute the battery charging method described in any one of claims 1 to 5.

12. A non-transitory computer-readable storage medium, when the instructions in the storage medium are executed by a processor of a mobile terminal, the mobile terminal is enabled to execute the battery charging method according to any one of claims 1 to 5.

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