Charging method and apparatus, and mobile terminal

Abstract

The present application relates to a charging method and apparatus, and a mobile terminal. The method comprises: when a battery meets a preset trigger condition, acquiring battery aging information, wherein the preset trigger condition comprises a trigger condition for switching from a constant-current charging mode to a constant-voltage charging mode; when it is determined that the battery aging information meets a charging acceleration condition, stopping charging within a preset duration; and acquiring a voltage drop of the battery before and after charging is stopped, and charging the battery on the basis of the voltage drop. By using the method, the attenuation of the charging speed of the battery after aging can be less, so that the charging speed of the battery is increased.

Description

Charging method, device and mobile terminal

[0001] Related applications

[0002] This application claims priority to Chinese patent application number 2023118628546, filed on December 29, 2023, entitled “Charging method, device and mobile terminal,” the entire text of which is incorporated herein by reference. Technical Field

[0003] The present application relates to the field of charging technology, and in particular to a charging method, device and mobile terminal. Background Art

[0004] With the development of mobile communication technology, mobile devices such as cell phones and tablets have become increasingly popular, bringing significant convenience to people's lives and work. Currently, most mobile device batteries are charged according to pre-set charging curves. However, as mobile devices are used, battery charging can often become increasingly slow. Summary of the Invention

[0005] The embodiments of the present application provide a charging method, device, and mobile terminal, which can reduce the attenuation of charging speed after battery aging, thereby improving the battery charging speed.

[0006] In a first aspect, an embodiment of the present application provides a charging method, the method comprising:

[0007] When the battery meets a preset trigger condition, obtaining battery aging information; the preset trigger condition includes a trigger condition for switching from a constant current charging mode to a constant voltage charging mode;

[0008] If it is determined that the battery aging information meets the charging speed-up conditions, charging will be stopped within a preset time.

[0009] The battery drop voltage before and after charging is stopped is obtained, and the battery is charged according to the drop voltage.

[0010] In one embodiment, charging the battery according to the voltage drop includes:

[0011] When the drop voltage is greater than or equal to a preset drop threshold, charging the battery with a target charging current corresponding to the drop voltage;

[0012] When the battery meets the preset trigger condition again, the process returns to the step of stopping charging within the preset time period.

[0013] In one embodiment, charging the battery using a target charging current corresponding to the drop voltage includes:

[0014] Get the current temperature of the battery;

[0015] Determining a target charging current corresponding to the current temperature and the drop voltage according to a preset corresponding relationship; wherein the corresponding relationship includes the relationship between the temperature, the voltage, and the charging current;

[0016] The battery is charged with a target charging current, wherein the target charging current is less than the charging current used before the battery meets a preset trigger condition.

[0017] In one embodiment, charging the battery according to the voltage drop includes:

[0018] When the drop voltage is less than the preset drop threshold, the charging mode of the battery is switched to the constant voltage charging mode, and the battery is charged using a charging voltage corresponding to the constant voltage charging mode.

[0019] In one embodiment, the method further comprises:

[0020] When it is determined that the battery aging information does not meet the charging acceleration condition, the charging mode of the battery is switched to the constant voltage charging mode, and the battery is charged using a charging voltage corresponding to the constant voltage charging mode.

[0021] In one embodiment, the battery aging information includes the number of charge and discharge cycles of the battery.

[0022] In one embodiment, the method further comprises:

[0023] When the number of charge and discharge cycles of the battery is greater than or equal to a preset number threshold, determining that the battery aging information meets the charging speed-up condition;

[0024] When the number of charge and discharge cycles of the battery is less than a preset number threshold, it is determined that the battery aging information does not meet the charging speed-up condition.

[0025] In one embodiment, the method further comprises:

[0026] During the constant current charging process of the battery, the battery voltage is detected;

[0027] When the battery voltage is greater than or equal to a preset voltage threshold, determining that the battery meets a preset trigger condition;

[0028] When the battery voltage is less than the preset voltage threshold, it is determined that the battery does not meet the preset trigger condition.

[0029] In a second aspect, an embodiment of the present application provides a charging device, the device comprising:

[0030] An information acquisition module, configured to acquire battery aging information when the battery meets a preset trigger condition; the preset trigger condition includes a trigger condition for switching from a constant current charging mode to a constant voltage charging mode;

[0031] A charging stop module is configured to stop charging within a preset time period if it is determined that the battery aging information meets the charging speed-up condition;

[0032] The first charging module is used to obtain the drop voltage of the battery before and after charging is stopped, and charge the battery according to the drop voltage.

[0033] In a third aspect, an embodiment of the present application provides a mobile terminal comprising a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor performs the steps of the charging method as described in any one of the first aspects.

[0034] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method as described in any one of the first aspects.

[0035] In a fifth aspect, an embodiment of the present application provides a computer program product, comprising a computer program, which, when executed by a processor, implements the steps of the method as described in any one of the first aspects.

[0036] The above-mentioned charging method, device, and mobile terminal obtain battery aging information when the battery meets preset trigger conditions; if it is determined that the battery aging information meets the charging speed-up conditions, charging is stopped within a preset time period; the battery voltage drop before and after charging is stopped is obtained, and the battery is charged according to the voltage drop. Through the embodiments of the present application, the battery can be charged according to the battery condition. In particular, after the battery ages, different charging measures can be taken according to the battery aging condition, so that the battery charging speed decreases less after aging, reducing the problem of increasingly slow charging. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0038] FIG1 is a diagram showing an application environment of a charging method according to an embodiment;

[0039] FIG2 is a flow chart of a charging method according to an embodiment;

[0040] FIG3 is a flow chart of a charging method according to an embodiment;

[0041] FIG4 is a schematic diagram of a flow chart of steps for charging a battery according to a voltage drop in one embodiment;

[0042] FIG5 is a schematic flow chart of steps for charging a battery using a target charging current in one embodiment;

[0043] FIG6 is a flow chart illustrating the steps of determining whether a battery satisfies a preset trigger condition in one embodiment;

[0044] FIG7 is a flow chart of a charging method according to another embodiment;

[0045] FIG8 is a structural block diagram of a charging device in one embodiment;

[0046] FIG9 is a diagram showing the internal structure of a mobile terminal in one embodiment. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0048] With the development of mobile communication technology, mobile terminals such as mobile phones and tablets have become increasingly popular, bringing great convenience to people's lives and work. Currently, most mobile terminal batteries are charged according to a pre-set charging curve. For example, the battery is first charged with a constant current current of 1500mA. When it reaches 9.0V, it switches to constant voltage charging, and charging is terminated when the current drops to 250mA. However, as the mobile terminal is used, the battery ages and its internal resistance increases. This causes the battery voltage to rise faster than when it is new, reaching the switching voltage more quickly, exiting constant current charging mode and entering constant voltage charging mode. Constant voltage charging takes longer than when the battery is new, resulting in increasing battery aging and slower charging speeds.

[0049] To address the above issues, an embodiment of the present application provides a charging method. During the battery charging process, if the battery meets the triggering conditions for switching from a constant current charging mode to a constant voltage charging mode, battery aging information is obtained. If the battery is judged to be aged based on the battery aging information, charging speed-up measures need to be taken, namely, charging is stopped within a preset time, and the battery voltage drop before and after charging is stopped is obtained, and then the battery is charged according to the voltage drop. Through the embodiment of the present application, the battery can be charged according to the battery's condition. In particular, after the battery has aged, different charging measures can be taken according to the battery's aging condition, so that the battery's charging speed is less attenuated after aging, reducing the problem of slower charging.

[0050] The charging method provided in the embodiment of the present application can be applied to the application environment shown in Figure 1. The application environment includes a mobile terminal, which includes a battery 101, multiple sensors 102 and a processor 103, wherein the processor 103 can obtain sensor data from each sensor 102 and control the charging and discharging of the battery 101. The mobile terminal 102 can be, but is not limited to, various laptops, smart phones, tablet computers and portable wearable devices; portable wearable devices can be smart watches, smart bracelets, head-mounted devices, etc. The battery 101 can include, but is not limited to, lithium batteries, lithium iron phosphate batteries, etc.; the sensor 102 can include, but is not limited to, temperature sensors, voltage sensors, current sensors, etc.; the processor 103 can include, but is not limited to, various smart chips.

[0051] In one embodiment, as shown in FIG2 , a charging method is provided, which is described by taking the method applied to the mobile terminal in FIG1 as an example, including the following steps:

[0052] Step 201: When the battery meets a preset trigger condition, obtain battery aging information.

[0053] The preset trigger conditions include a trigger condition for switching from constant current charging mode to constant voltage charging mode. The trigger condition can be when the battery voltage reaches a preset voltage threshold, when the battery current reaches a preset current threshold, or when the battery capacity reaches a preset capacity threshold. It should be noted that the preset trigger conditions are not limited to the above trigger conditions and can be set according to actual circumstances.

[0054] The battery aging information may include the battery state of health (SOH), which may characterize the current battery's ability to store electrical energy relative to a new battery, and express the battery's state from the beginning to the end of its life in the form of a percentage.

[0055] During the battery charging process, the battery may be charged according to the charging curve shown in Table 1.

[0056] Table 1

[0057] Wherein, C represents the battery capacity. Taking a battery with a capacity C of 5000mAh as an example, it is charged to 9.0V with a constant current of 0.3C and charged to 9.0V with a constant voltage of 0.05C, that is, it is charged to 9.0V with a constant current of 0.3*5000=1500mA, and then charged at a constant voltage. Charging is stopped when the current drops to 250mA.

[0058] The mobile terminal monitors the charging status of the battery, and if it is determined that the battery meets a preset trigger condition, obtains battery aging information, for example, obtains the battery health status.

[0059] In one of the embodiments, since there is a certain relationship between the battery health state and the battery internal resistance, the worse the battery health state, that is, the lower the SOH value, the greater the battery internal resistance. Therefore, the battery internal resistance can be calculated by detecting the battery voltage, current, temperature, etc., and then the battery health state is calculated based on the pre-established correspondence between the battery health state and the battery internal resistance and the battery internal resistance.

[0060] In one embodiment, the mobile terminal can calculate the battery health status in real time to obtain battery aging information. Alternatively, the battery health status can be calculated according to a preset period and stored in a preset storage space. When it is determined that the battery meets a preset trigger condition, the battery health status is retrieved from the preset storage space to obtain the battery aging information.

[0061] It should be noted that the method for obtaining battery aging information is not limited to the above method and can be set according to actual conditions.

[0062] Step 202: If it is determined that the battery aging information meets the charging acceleration condition, stop charging within a preset time period.

[0063] The charging acceleration condition may include battery aging information indicating that the battery aging degree has reached a preset aging degree, or the battery health is lower than a preset health threshold.

[0064] After obtaining the battery aging information, it is determined whether the battery aging information meets the charging acceleration conditions. If the charging acceleration conditions are met, charging is stopped and maintained for a preset duration. For example, charging is stopped for 20 seconds. It should be noted that the preset duration is not limited to 20 seconds and can be set according to actual conditions.

[0065] Step 203: Obtain the battery voltage drop before and after charging is stopped, and charge the battery according to the voltage drop.

[0066] Obtain the first battery voltage before charging is stopped and the second battery voltage after a preset time period has passed. Calculate the voltage difference between the first and second battery voltages to obtain the dropout voltage. For example, if the first battery voltage before charging is stopped is 9.0V and the second battery voltage after the preset time period has passed is 8.7V, the dropout voltage can be determined to be 0.3V.

[0067] Understandably, as the battery ages, its internal resistance increases, and the drop voltage increases. Therefore, different charging measures can be taken depending on the magnitude of the voltage drop. For example, if the drop voltage is aV, the battery is charged with charging current I1; if the drop voltage is bV, the battery is charged with charging current I2; and if the drop voltage is cV, the battery is charged with charging voltage U. In other words, by using the drop voltage, or charging float voltage, to reflect the degree of battery aging, we can more accurately match the required charging current to the battery, thereby maximizing charging speed without reducing battery life.

[0068] In the above embodiment, when the battery meets a preset trigger condition, battery aging information is obtained; when it is determined that the battery aging information meets the charging speed-up condition, charging is stopped within a preset time period; the battery voltage drop before and after charging is stopped is obtained, and the battery is charged according to the voltage drop. Through the embodiment of the present application, the battery can be charged according to the battery condition, especially after the battery has aged. Different charging measures can be taken according to the battery aging condition, so that the battery charging speed will be less attenuated after aging, reducing the problem of increasingly slow charging.

[0069] In one embodiment, as shown in FIG3 , after the step of obtaining battery aging information, the embodiment of the present application may further include the following steps:

[0070] Step 204 : If it is determined that the battery aging information does not meet the charging acceleration condition, the battery charging mode is switched to a constant voltage charging mode, and the battery is charged using a charging voltage corresponding to the constant voltage charging mode.

[0071] After obtaining the battery aging information, it is determined whether the battery aging information meets the charging acceleration conditions. If the battery aging information does not meet the charging acceleration conditions, indicating that the battery aging degree has not reached the preset aging degree, the battery can be charged according to the original method, that is, the battery charging mode is switched to constant voltage charging mode, and the battery is charged using a constant charging voltage.

[0072] In the above embodiment, if it is determined that the battery aging information does not meet the charging speed-up conditions, the battery charging mode is switched to the constant voltage charging mode and the battery is charged using the charging voltage corresponding to the constant voltage charging mode. In the embodiment of the present application, the original charging method is still used for charging when the battery is not aged, which can reduce the judgment processing process and save energy.

[0073] In one embodiment, as shown in FIG4 , an implementation method of the step “charging the battery according to the voltage drop” in the above embodiment may include the following steps:

[0074] Step 301 : When the drop voltage is greater than or equal to a preset drop threshold, charging the battery with a target charging current corresponding to the drop voltage.

[0075] The preset drop threshold can be a drop voltage at a preset level of battery aging determined based on a large amount of experimental data. For example, if the experimental data determines that the battery's health state is less than 50%, the drop voltage is X, then this drop voltage X is used as the preset drop threshold.

[0076] After obtaining the drop voltage, the drop voltage is compared with the preset drop threshold; if the drop voltage is greater than or equal to the preset drop threshold, indicating that the battery aging degree has reached the preset aging degree, the constant current charging mode is still adopted, and the battery is charged with the target charging current corresponding to the drop voltage.

[0077] It is understandable that after the battery reaches the preset aging level, it does not switch to the constant voltage charging mode, but still uses the constant current charging mode to charge the battery. This can extend the constant current charging time and reduce the constant voltage charging time, so that the charging speed decays less after the battery ages, thereby improving the user's charging experience.

[0078] Step 302: When the battery meets the preset trigger condition again, the process returns to the step of stopping charging within the preset time period.

[0079] The battery is charged using the target charging current corresponding to the drop voltage while monitoring the battery status. If the battery meets the preset trigger condition again, charging is stopped again for the preset duration. The drop voltage before and after charging is then measured and the battery is charged based on the drop voltage.

[0080] For example, when charging the battery with the target charging current and the battery voltage reaches 9.0V again, the battery is not switched to the constant voltage charging mode. Instead, the charging is stopped for 20 seconds and the drop voltage is obtained. The subsequent charging method is determined based on the drop voltage.

[0081] In the above embodiment, when the drop voltage is greater than or equal to the preset drop threshold, the target charging current corresponding to the drop voltage is used to charge the battery; when the battery meets the preset trigger condition again, the step of stopping charging within the preset time period is returned. The embodiment of the present application utilizes the drop voltage, that is, the charging float voltage, to more accurately describe the aging of the battery, thereby matching a more accurate charging current according to different float pressure sizes, thereby maximizing the charging speed without reducing the battery life. Compared with the traditional method of replenishing power during the general charging stage, the technical solution of the embodiment of the present application can re-enter fast charging, which is more efficient, generates less heat, and charges faster, and provides greater benefits to users.

[0082] Based on the above embodiment, the step of "charging the battery according to the drop voltage" may also include: when the drop voltage is less than a preset drop threshold, switching the battery charging mode to a constant voltage charging mode, and charging the battery using the charging voltage corresponding to the constant voltage charging mode.

[0083] After obtaining the drop voltage, the drop voltage is compared with the preset drop threshold; if the drop voltage is less than the preset drop threshold, indicating that the battery has not reached the preset aging level, the battery charging mode is switched to the constant voltage charging mode, and the battery is charged using the charging voltage corresponding to the constant voltage charging mode.

[0084] In the above embodiment, the charging float voltage can be used to more accurately describe the battery aging condition, and the original charging method is used when the battery is not aged, thereby reducing the judgment processing process and saving energy consumption.

[0085] In one embodiment, as shown in FIG5 , an implementation method of the step of “charging the battery with a target charging current corresponding to the drop voltage” in the above embodiment may include the following steps:

[0086] Step 401: Obtain the current temperature of the battery.

[0087] The mobile terminal may obtain the current temperature of the battery through a temperature sensor disposed at the battery.

[0088] Step 402 : Determine a target charging current corresponding to the current temperature and the drop voltage according to a preset corresponding relationship.

[0089] The corresponding relationship includes the relationship between temperature, voltage and charging current.

[0090] After obtaining the current temperature of the battery, the target charging current corresponding to the current temperature and the drop voltage can be found according to the corresponding relationship.

[0091] For example, the current relationship table includes a corresponding relationship. The current relationship table can include multiple temperature ranges, each temperature range corresponds to multiple voltage ranges, and each voltage range corresponds to a different charging current. First, the target temperature range corresponding to the current battery temperature is searched in the current relationship table. Then, the target voltage range corresponding to the drop voltage is searched among the multiple voltage ranges corresponding to the target temperature range. The charging current corresponding to the target voltage range is then determined as the target charging current.

[0092] For example, the current relationship table includes temperature intervals of -10℃~0℃, 0℃~5℃, 5℃~10℃, 10℃~18℃, 18℃~35℃, 35℃~45℃, and 45℃~55℃. Each temperature interval corresponds to two voltage intervals of 0.1-0.3V and 0.3-0.5V, and each voltage interval corresponds to a different charging current. If the current battery temperature is 20℃ and the drop voltage is 0.2V, the target temperature interval corresponding to 20℃ can be found in the current relationship table as 18℃~35℃, and then the target voltage interval corresponding to 0.2V can be found in the voltage interval corresponding to the target temperature interval as 0.1-0.3V. The charging current Ix corresponding to the target voltage interval is then determined as the target charging current.

[0093] It should be noted that the form of the corresponding relationship includes but is not limited to the above description, and the method of determining the charging current based on the corresponding relationship is also not limited to the above description and can be set according to actual conditions.

[0094] Step 403: Charge the battery using the target charging current.

[0095] After determining the target charging current, the battery is charged with a constant current using the target charging current. It should be noted that the target charging current is less than the charging current used before the battery meets the preset trigger conditions. For example, if the battery is charged with a constant current of 1500mA before the preset trigger conditions are met, the target charging current needs to be less than 1500mA.

[0096] It is understandable that if the battery is charged again with the charging current used before the preset trigger condition is met, the battery will soon meet the preset trigger condition again; and using a smaller target charging current to charge the battery can extend the constant current charging time, thereby shortening the constant voltage charging time and increasing the charging speed.

[0097] In the above embodiment, the current battery temperature is obtained; a target charging current corresponding to the current temperature and the dropout voltage is determined based on a preset correspondence; and the battery is charged using the target charging current. The present embodiment utilizes the preset correspondence and the dropout voltage to quickly match a more accurate charging current corresponding to the battery's aging, thereby maximizing charging speed without reducing battery life.

[0098] In one embodiment, the battery aging information includes the number of charge and discharge cycles of the battery. Based on the battery aging information, the embodiment of the present application may further include: determining that the battery aging information meets the charging speed-up condition when the number of charge and discharge cycles of the battery is greater than or equal to a preset number threshold; and determining that the battery aging information does not meet the charging speed-up condition when the number of charge and discharge cycles of the battery is less than the preset number threshold.

[0099] In practical applications, battery health status can be defined using capacity, power, internal resistance, number of charge and discharge cycles, and peak power. Taking the battery health status including the number of charge and discharge cycles as an example, when determining whether the battery aging information meets the charging speed-up conditions, the number of charge and discharge cycles can be compared with a preset number threshold. If the number of charge and discharge cycles is greater than or equal to the preset number threshold, it indicates that the battery has aged, and the battery aging information is determined to meet the charging speed-up conditions. If the number of charge and discharge cycles is less than the preset number threshold, it indicates that the battery has not aged, and the battery aging information is determined to not meet the charging speed-up conditions.

[0100] In one embodiment, the method for determining the number of charge and discharge cycles may include: calculating the cumulative charge capacity and the cumulative discharge capacity of the battery using the ampere-hour integration method; summing the cumulative charge capacity and the cumulative discharge capacity to obtain the sum of the capacities; and calculating the ratio of the sum of the capacities to 2 times the nominal capacity to obtain the number of charge and discharge cycles.

[0101] In the above embodiment, if the number of charge and discharge cycles of the battery is greater than or equal to the preset number threshold, the battery aging information is determined to meet the charging speed-up conditions; if the number of charge and discharge cycles of the battery is less than the preset number threshold, the battery aging information is determined to not meet the charging speed-up conditions. The present embodiment uses the number of charge and discharge cycles to determine the degree of battery aging, which can quickly grasp the battery status, thereby providing a basis for whether to subsequently adopt charging speed-up measures, thereby improving charging speed.

[0102] In one embodiment, as shown in FIG6 , the embodiment of the present application may further include the step of determining whether the battery meets a preset trigger condition:

[0103] Step 501: Detect the battery voltage during constant current charging of the battery.

[0104] The battery can be charged according to a charging curve, which is shown in Table 1 in the above embodiment. During the constant current charging process of the battery, the battery voltage is detected to determine whether the battery meets a preset trigger condition.

[0105] Step 502: When the battery voltage is greater than or equal to a preset voltage threshold, determine that the battery meets a preset trigger condition.

[0106] According to the above charging curve, if the battery voltage is greater than or equal to the preset voltage threshold, indicating that the battery can switch from constant current charging mode to constant voltage charging mode, the battery is determined to meet the preset trigger condition. For example, if the current battery temperature is between -10°C and 0°C and the preset voltage threshold is 9.0V; if the detected battery voltage is greater than or equal to 9.0V, the battery is determined to meet the preset trigger condition. Alternatively, if the current battery temperature is between 0°C and 5°C and the preset voltage threshold is 9.1V, if the detected battery voltage is greater than or equal to 9.1V, the battery is determined to meet the preset trigger condition.

[0107] Step 503: When the battery voltage is less than the preset voltage threshold, it is determined that the battery does not meet the preset trigger condition.

[0108] If the battery voltage is less than the preset voltage threshold, indicating that the battery still requires constant current charging, it is determined that the battery does not meet the preset trigger condition. For example, if the current battery temperature is between -10°C and 0°C and the preset voltage threshold is 9.0V; if the detected battery voltage is less than 9.0V, it is determined that the battery does not meet the preset trigger condition.

[0109] In the above embodiment, during constant current charging of the battery, the battery voltage is detected; if the battery voltage is greater than or equal to a preset voltage threshold, it is determined that the battery meets the preset trigger condition; if the battery voltage is less than the preset voltage threshold, it is determined that the battery does not meet the preset trigger condition. The embodiment of the present application determines whether to switch the charging mode based on the battery voltage, which is more consistent with the battery charging status, thereby better charging the battery and improving the user's charging experience.

[0110] In one embodiment, as shown in FIG7 , a charging method is provided, which is described by taking the method applied to the mobile terminal in FIG1 as an example, including the following steps:

[0111] Step 601: Detect the battery voltage during constant current charging of the battery.

[0112] Step 602: When the battery voltage is less than a preset voltage threshold, determine that the battery does not meet a preset trigger condition.

[0113] Step 603 : When the battery voltage is greater than or equal to the preset voltage threshold, it is determined that the battery meets a preset trigger condition, and battery aging information is obtained.

[0114] Step 604 : If it is determined that the battery aging information does not meet the charging acceleration condition, the battery charging mode is switched to a constant voltage charging mode, and the battery is charged using a charging voltage corresponding to the constant voltage charging mode.

[0115] Step 605 : If it is determined that the battery aging information meets the charging acceleration condition, charging is stopped within a preset time period.

[0116] Step 606: Obtain the battery voltage drop before and after charging is stopped.

[0117] Step 607 : When the drop voltage is less than the preset drop threshold, the charging mode of the battery is switched to the constant voltage charging mode, and the battery is charged using the charging voltage corresponding to the constant voltage charging mode.

[0118] Step 608 , when the drop voltage is greater than or equal to the preset drop threshold, obtain the current temperature of the battery; determine the target charging current corresponding to the current temperature and the drop voltage according to a preset correspondence; and charge the battery using the target charging current.

[0119] The target charging current is less than the charging current used before the battery meets the preset trigger condition.

[0120] Step 609 : When the battery meets the preset trigger condition again, the process returns to the step of stopping charging within the preset time period.

[0121] In the above embodiment, determining whether to switch charging modes based on the battery voltage and a preset voltage threshold is more consistent with the battery charging status, allowing for better battery charging. Furthermore, utilizing battery aging information and charging float pressure can more accurately describe battery aging, thereby matching a more precise charging current to different float pressures, thereby maximizing charging speed without reducing battery life. Compared to traditional methods of replenishing power during the general charging phase, the technical solution of the present embodiment allows for re-entry into fast charging, resulting in higher efficiency, less heat generation, faster charging, and greater benefits for users.

[0122] It should be understood that, although the various steps in the flowcharts involved in the various embodiments described above are displayed in sequence according to the instructions of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowcharts involved in the various embodiments described above can include multiple steps or multiple stages, and these steps or stages are not necessarily executed and completed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of steps or stages in other steps.

[0123] Based on the same inventive concept, the present application also provides a charging device for implementing the aforementioned charging method. The solution provided by this device is similar to the solution described in the aforementioned method. Therefore, the specific limitations of one or more charging device embodiments provided below can be found in the above-mentioned limitations of the charging method and will not be repeated here.

[0124] In one embodiment, as shown in FIG8 , a charging device is provided, the device comprising:

[0125] The information acquisition module 701 is used to obtain battery aging information when the battery meets a preset trigger condition; the preset trigger condition includes a trigger condition for switching from a constant current charging mode to a constant voltage charging mode;

[0126] The charging stop module 702 is configured to stop charging within a preset time period if it is determined that the battery aging information meets the charging speed-up condition;

[0127] The first charging module 703 is configured to obtain the battery voltage drop before and after charging is stopped, and charge the battery according to the voltage drop.

[0128] In one embodiment, the first charging module 703 is specifically configured to charge the battery using a target charging current corresponding to the drop voltage when the drop voltage is greater than or equal to a preset drop threshold; and return to the step of stopping charging within a preset time period when the battery meets the preset trigger condition again.

[0129] In one embodiment, the first charging module 703 is specifically used to obtain the current temperature of the battery; determine the target charging current corresponding to the current temperature and the drop voltage according to a preset correspondence; wherein the correspondence includes the relationship between temperature, voltage and charging current; charge the battery using the target charging current; wherein the target charging current is less than the charging current used before the battery meets the preset trigger condition.

[0130] In one embodiment, the first charging module 703 is specifically configured to switch the battery charging mode to a constant voltage charging mode when the drop voltage is less than a preset drop threshold, and charge the battery using a charging voltage corresponding to the constant voltage charging mode.

[0131] In one embodiment, the apparatus further comprises:

[0132] The second charging module is used to switch the battery charging mode to the constant voltage charging mode when it is determined that the battery aging information does not meet the charging acceleration condition, and charge the battery using the charging voltage corresponding to the constant voltage charging mode.

[0133] In one embodiment, the battery aging information includes the number of charge and discharge cycles of the battery.

[0134] In one embodiment, the apparatus further comprises:

[0135] A first aging determination module is configured to determine that the battery aging information satisfies a charging acceleration condition when the number of charge and discharge cycles of the battery is greater than or equal to a preset number threshold;

[0136] The second aging determination module is configured to determine that the battery aging information does not meet the charging acceleration condition when the number of charge and discharge cycles of the battery is less than a preset number threshold.

[0137] In one embodiment, the apparatus further comprises:

[0138] The voltage detection module is used to detect the battery voltage during the constant current charging process of the battery;

[0139] A first trigger determination module is configured to determine that the battery meets a preset trigger condition when the battery voltage is greater than or equal to a preset voltage threshold;

[0140] The second trigger determination module is configured to determine that the battery does not meet a preset trigger condition when the battery voltage is less than a preset voltage threshold.

[0141] Each module in the above-mentioned charging device can be implemented in whole or in part through software, hardware, or a combination thereof. Each of the above-mentioned modules can be embedded in or independent of the processor of the computer device in hardware form, or can be stored in the memory of the computer device in software form, so that the processor can call and execute the corresponding operations of each of the above modules.

[0142] In one embodiment, a mobile terminal is provided, the internal structure of which may be shown in FIG9 . The mobile terminal includes a processor, memory, an input / output interface, a communication interface, a display unit, and an input device. The processor, memory, and input / output interface are connected via a system bus, and the communication interface, display unit, and input device are connected to the system bus via the input / output interface. The processor of the mobile terminal is configured to provide computing and control capabilities. The memory of the mobile terminal includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer program in the non-volatile storage medium. The input / output interface of the mobile terminal is configured to exchange information between the processor and external devices. The communication interface of the mobile terminal is configured to communicate with external terminals via wired or wireless communication, where the wireless communication may be achieved via Wi-Fi, a mobile cellular network, NFC (near-field communication), or other technologies. When executed by the processor, the computer program implements a charging method. The display unit of the mobile terminal is configured to form a visually visible image and may be a display screen, a projection device, or a virtual reality imaging device. The display screen may be a liquid crystal display screen or an electronic ink display screen, and the input device of the mobile terminal may be a touch layer covered on the display screen, or a key, trackball or touchpad provided on the mobile terminal housing.

[0143] Those skilled in the art will understand that the structure shown in Figure 9 is merely a block diagram of a partial structure related to the scheme of the present application, and does not constitute a limitation on the mobile terminal to which the scheme of the present application is applied. The specific mobile terminal may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0144] The present application also provides a computer-readable storage medium or non-volatile computer-readable storage medium containing computer-executable instructions, which, when executed by one or more processors, cause the processors to perform the steps of the charging method described in the above embodiment.

[0145] An embodiment of the present application further provides a computer program product comprising instructions, which, when executed on a computer, enables the computer to execute the charging method in the above embodiment.

[0146] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with the relevant laws, regulations and standards of relevant countries and regions.

[0147] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, database or other media used in the embodiments provided in this application may include at least one of non-volatile and volatile memory. Non-volatile memory may include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory may include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in the various embodiments provided herein may include at least one of a relational database and a non-relational database. Non-relational databases may include, but are not limited to, distributed databases based on blockchains. The processor involved in the various embodiments provided herein may be, but are not limited to, a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic unit, a data processing logic unit based on quantum computing, and the like.

[0148] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0149] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A charging method, characterized in that, The method includes: When the battery meets a preset trigger condition, obtaining battery aging information; the preset trigger condition includes a trigger condition for switching from a constant current charging mode to a constant voltage charging mode; When it is determined that the battery aging information meets the charging speed-up condition, stopping charging within a preset duration; Obtaining the drop voltage of the battery before and after stopping charging, and charging the battery according to the drop voltage.

2. The method according to claim 1, wherein The charging the battery according to the drop voltage includes: When the drop voltage is greater than or equal to a preset drop threshold, charging the battery with a target charging current corresponding to the drop voltage; When the battery meets the preset trigger condition again, returning to execute the step of stopping charging within the preset duration.

3. The method according to claim 2, characterized in that, The charging the battery with a target charging current corresponding to the drop voltage includes: Obtaining the current temperature of the battery; Determining the target charging current corresponding to the current temperature and the drop voltage according to a preset corresponding relationship; wherein, the corresponding relationship includes the relationship between temperature, voltage and charging current; Charging the battery with the target charging current; wherein, the target charging current is less than the charging current used before the battery meets the preset trigger condition.

4. The method according to claim 2, characterized in that, The charging the battery according to the drop voltage includes: When the drop voltage is less than the preset drop threshold, switching the charging mode of the battery to the constant voltage charging mode, and charging the battery with the charging voltage corresponding to the constant voltage charging mode.

5. The method according to any one of claims 1-4, characterized in that, The method further includes: When it is determined that the battery aging information does not meet the charging speed-up condition, switching the charging mode of the battery to the constant voltage charging mode, and charging the battery with the charging voltage corresponding to the constant voltage charging mode.

6. The method according to claim 1, wherein The battery aging information includes the charge and discharge cycle times of the battery.

7. The method according to claim 6, characterized in that, The method further includes: When the charge and discharge cycle times of the battery are greater than or equal to a preset number threshold, determining that the battery aging information meets the charging speed-up condition; When the charge and discharge cycle times of the battery are less than the preset number threshold, determining that the battery aging information does not meet the charging speed-up condition.

8. The method according to claim 7, characterized in that, The method further includes: Calculating the cumulative charging capacity and the cumulative discharging capacity of the battery by using the ampere-hour integration method; Performing a summation calculation on the cumulative charging capacity and the cumulative discharging capacity to obtain a capacity sum; Calculating the ratio of the capacity sum to twice the nominal capacity to obtain the charge and discharge cycle times.

9. The method according to any one of claims 1 to 4, characterized in that, The method further includes: During the constant current charging process of the battery, detecting the battery voltage; When the battery voltage is greater than or equal to a preset voltage threshold, determining that the battery meets the preset trigger condition; When the battery voltage is less than the preset voltage threshold, determining that the battery does not meet the preset trigger condition.

10. The method according to claim 1, characterized in that, The battery aging information may include the battery health state, and the method further includes: Calculating the internal resistance of the battery by detecting the voltage, current and temperature of the battery; Calculate the battery health state according to the pre-established correspondence between the battery health state and the battery internal resistance and the internal resistance of the battery.

11. The method according to claim 10, wherein The charging speed-up condition may include that the battery aging information indicates that the battery aging degree reaches a preset aging degree, or the battery health degree is lower than a preset health degree threshold.

12. A charging device, characterized in that, The device includes: An information acquisition module, configured to acquire battery aging information when the battery meets a preset trigger condition; the preset trigger condition includes a trigger condition for switching from a constant current charging mode to a constant voltage charging mode; A charging stop module, configured to stop charging for a preset duration when it is determined that the battery aging information meets the charging speed-up condition; A first charging module, configured to acquire the falling voltage of the battery before and after stopping charging, and charge the battery according to the falling voltage.

13. The device according to claim 12, characterized in that, The first charging module is specifically configured to, when the falling voltage is greater than or equal to a preset falling threshold, charge the battery with a target charging current corresponding to the falling voltage; when the battery meets the preset trigger condition again, return to execute the step of stopping charging for the preset duration.

14. The device according to claim 13, characterized in that, The first charging module is specifically configured to acquire the current temperature of the battery; determine the target charging current corresponding to the current temperature and the falling voltage according to a preset correspondence; wherein the correspondence includes the relationship between temperature, voltage, and charging current; charge the battery with the target charging current; wherein the target charging current is less than the charging current used before the battery meets the preset trigger condition.

15. The device according to claim 13, characterized in that, The first charging module is specifically configured to, when the falling voltage is less than the preset falling threshold, switch the charging mode of the battery to the constant voltage charging mode, and charge the battery with the charging voltage corresponding to the constant voltage charging mode.

16. The device according to any one of claims 12 - 15, characterized in that, The device further includes: A second charging module, configured to, when it is determined that the battery aging information does not meet the charging speed-up condition, switch the charging mode of the battery to the constant voltage charging mode, and charge the battery with the charging voltage corresponding to the constant voltage charging mode.

17. The device according to claim 12, characterized in that The battery aging information includes the charge and discharge cycle times of the battery.

18. A mobile terminal, comprising a memory and a processor, wherein a computer program is stored in the memory, characterized in that, When the computer program is executed by the processor, the processor is caused to execute the steps of the charging method according to any one of claims 1 to 11.

19. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, the steps of the method according to any one of claims 1 to 11 are implemented.

20. A computer program product comprising a computer program, characterized in that, When the computer program is executed by the processor, the steps of the method according to any one of claims 1 to 11 are implemented.

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