Battery charging method, apparatus, device, medium, and product

Abstract

The application discloses a battery charging method, device, equipment, medium and product, and belongs to the technical field of batteries. The battery charging method is applied to an electronic device, the electronic device comprises a battery, and the battery charging method comprises the following steps: acquiring a first state parameter and a second state parameter of the battery, the first state parameter is used for representing the aging degree of the battery at the beginning of charging in the same charging, and the second state parameter is used for representing the aging degree of the battery at the end of charging in the same charging; determining a target voltage drop threshold of the battery according to the first state parameter and the second state parameter; and charging the battery in the case that the voltage drop value of the battery after the end of the same charging is greater than or equal to the target voltage drop threshold.

Description

Technical Field

[0001] This application belongs to the field of battery technology, specifically relating to a battery charging method, apparatus, equipment, medium, and product. Background Technology

[0002] With the development of communication technology, mobile phones, tablets, and other electronic devices have become indispensable in people's daily lives and work. Some user groups need to use electronic devices for extended periods at work or in their daily lives. To maintain sufficient battery power or ensure uninterrupted use, these users often use their electronic devices while they are connected to the charger for extended periods. While charging stops once the battery is fully charged, continued use will cause the battery's charge and voltage to decrease. When the voltage drops to a certain level, the charger will recharge the battery.

[0003] The relevant technology primarily determines whether the battery needs to be recharged by judging whether its drop voltage has reached a drop threshold. For example, if the drop voltage exceeds the drop threshold, the battery is recharged. However, as batteries age, their internal resistance increases, causing them to be recharged very soon after a full charge. Repeated charging can intensify the chemical reactions inside the battery, leading to changes in the internal electrode structure, reduced capacity, decreased charge / discharge performance, shortened battery life, and even internal swelling, potentially causing a fire. Summary of the Invention

[0004] The purpose of this application is to provide a battery charging method, apparatus, device, medium, and product that can solve the technical problem of frequent recharging of batteries in a short period of time in related technologies.

[0005] In a first aspect, embodiments of this application provide a battery charging method applied to an electronic device, the electronic device including a battery, the method comprising:

[0006] Obtain the first state parameter and the second state parameter of the battery. The first state parameter is used to characterize the aging degree of the battery at the beginning of the same charge and the second state parameter is used to characterize the aging degree of the battery at the end of the same charge.

[0007] The target voltage drop threshold of the battery is determined based on the first state parameter and the second state parameter.

[0008] The battery is charged if the voltage drop after the same charge cutoff is greater than or equal to the target voltage drop threshold.

[0009] Secondly, embodiments of this application provide a battery charging device applied to an electronic device, the electronic device including a battery, the device comprising:

[0010] The acquisition module is used to acquire the first state parameter and the second state parameter of the battery. The first state parameter is used to characterize the aging degree of the battery at the start of the same charge and the second state parameter is used to characterize the aging degree of the battery at the end of the same charge.

[0011] The determination module is used to determine the target voltage drop threshold of the battery based on the first state parameter and the second state parameter.

[0012] The charging module is used to charge the battery when the voltage drop after the battery is cut off from the same charging cycle is greater than or equal to the target voltage drop threshold.

[0013] Thirdly, embodiments of this application provide an electronic device including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the first aspect.

[0014] Fourthly, embodiments of this application provide a readable storage medium on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method as described in the first aspect.

[0015] Fifthly, embodiments of this application provide a chip, which includes a processor and a communication interface, the communication interface and the processor being coupled together, the processor being used to run programs or instructions to implement the steps of the method as described in the first aspect.

[0016] In a sixth aspect, embodiments of this application provide a computer program product stored in a storage medium, which is executed by at least one processor to implement the steps of the method as described in the first aspect.

[0017] In this embodiment, a first state parameter and a second state parameter of the battery are obtained. The first state parameter characterizes the degree of aging of the battery at the start of the same charge cycle, and the second state parameter characterizes the degree of aging of the battery at the end of the same charge cycle. A target voltage drop threshold for the battery is determined based on the first and second state parameters. The battery is charged if the voltage drop value after the end of the same charge cycle is greater than or equal to the target voltage drop threshold. That is, this embodiment dynamically determines the voltage drop threshold of the battery based on its state parameters at the start and end of the same charge cycle. Because different degrees of battery aging result in different state parameters, this embodiment dynamically determines the voltage drop threshold based on different battery state parameters, fully considering the impact of battery aging on the state parameters, thus avoiding the problem of frequent recharging of aged batteries. Attached Figure Description

[0018] Figure 1A schematic diagram of a simplified battery model provided for related technologies;

[0019] Figure 2 A schematic diagram illustrating battery recharging for related technologies;

[0020] Figure 3 A schematic diagram illustrating another battery recharging method provided for related technologies;

[0021] Figure 4 A flowchart illustrating a battery charging method provided in this application embodiment;

[0022] Figure 5 A flowchart illustrating another battery charging method provided in this application embodiment;

[0023] Figure 6 A flowchart illustrating another battery charging method provided in this application embodiment;

[0024] Figure 7 This application provides a schematic diagram of a battery charging process.

[0025] Figure 8 This is a schematic diagram of the structure of a battery charging device provided in an embodiment of this application;

[0026] Figure 9 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application;

[0027] Figure 10 This is a schematic diagram of the hardware structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0029] The terms "first," "second," etc., used in this application's specification are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class, without limiting the number of objects; for example, a first object can be one or more. Furthermore, in the specification, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects have an "or" relationship.

[0030] Batteries in current electronic devices can be simplified to, for example Figure 1 The model shown is a simplified battery model consisting of an ideal voltage source Vcell and a battery internal resistance R0. The battery and electronic devices are connected via a battery protection board and a board-to-board (BTB) connector. Figure 1 The battery protection board (not shown) is connected to the BTB, and the BTB also has an internal resistance R. BTB The internal resistance R0 of a battery typically ranges from tens to hundreds of milliohms depending on the degree of aging. The internal resistance R of a BTB battery... BTB Typically around 10 milliohms. The battery protection board and BTB are the battery interfaces, simultaneously limiting the battery's charging and discharging current and protecting the battery. Electronic devices obtain the actual voltage Vbat from the BTB. Electronic devices determine whether the battery has reached the full charge threshold Vmax, i.e., they determine whether Vbat equals Vmax.

[0031] From the above model, we can obtain:

[0032] When the battery is charging

[0033] V bat =V cell +I cg *(R0+R BTB )

[0034] When the battery is discharging

[0035] V bat =V cell -I dcg *(R0+R BTB )

[0036] Among them, I cg For the charging current, I dcg This is the discharge current. Since the charging current is generally large, V... bat A pressure difference will occur at the moment charging stops:

[0037] V drop =(I cg +I dcg )*(R0+R BTB )

[0038] At this time, the standby discharge current is very small, typically only in the milliampere range, so V drop It can be approximated as the voltage drop I across the two internal resistances only when the charging current is applied. cg *(R0+R BTB ),Right now

[0039] Currently, the main approach is to set a fixed voltage drop threshold Vfalling for the battery, and then restart charging once the battery voltage Vbat ≤ Vmax – Vfalling.

[0040] When the battery is relatively new, its internal resistance is low, Vdrop is low, and Vfalling is much greater than Vdrop. As the battery ages with use and the number of battery cycles increases, its internal resistance R0 gradually increases, and Vdrop becomes larger, gradually approaching the fixed Vfalling. This causes electronic devices to restart charging as soon as they detect a full charge.

[0041] like Figure 2 As shown, according to the above scheme, using a fixed voltage drop threshold Vfalling as the basis for determining whether to restart charging will make it very easy and quick for aged batteries to recharge after being fully charged. Repeated charging can make the chemical reaction inside the battery more intense, leading to changes in the internal electrode structure, reduced capacity, decreased charging and discharging performance, shortened battery life, and even internal expansion of the battery, which may cause a fire.

[0042] To solve the above problems, the relevant technical solutions are as follows: Figure 3 As shown, after detecting that the battery has been repeatedly charged a certain number of times, the charging level is forcibly reduced to a non-full charge level (such as 80%) to avoid the harm caused by high voltage recharging of the battery. However, there is still a problem: if the user needs to leave the charging range temporarily, the electronic device may not be fully charged, affecting the user's subsequent use.

[0043] Therefore, this application provides a battery charging method, apparatus, device, medium, and product, which can solve the technical problem of frequent recharging of batteries in a short period of time in related technologies, without reducing the charging capacity of the battery, and thus avoid the situation where electronic devices are connected to the charger for a long time but are not fully charged.

[0044] The battery charging method provided in this application can be applied to electronic devices that use batteries and can be repeatedly charged and discharged, including but not limited to watches, tablets, mobile phones, notebook computers, and personal computers (PCs).

[0045] This application's embodiments can be applied to scenarios where electronic devices are connected to a charger for extended periods. The battery charging method provided by this application's embodiments will be described in detail below with reference to the accompanying drawings and specific examples and application scenarios.

[0046] Figure 4 A flowchart of a battery charging method provided in this application embodiment is shown below. Figure 4 As shown, the battery charging method may include the following steps:

[0047] S410: Obtain the first and second state parameters of the battery.

[0048] The first state parameter is used to characterize the degree of aging of the battery at the start of the same charge cycle, and the second state parameter is used to characterize the degree of aging of the battery at the end of the same charge cycle.

[0049] S420. Determine the target voltage drop threshold of the battery based on the first state parameter and the second state parameter.

[0050] S430. Charge the battery if the voltage drop after the same charge cutoff is greater than or equal to the target voltage drop threshold.

[0051] In this embodiment, a first state parameter and a second state parameter of the battery are obtained. The first state parameter characterizes the degree of aging of the battery at the start of the same charge cycle, and the second state parameter characterizes the degree of aging of the battery at the end of the same charge cycle. A target voltage drop threshold for the battery is determined based on the first and second state parameters. The battery is charged if the voltage drop value after the end of the same charge cycle is greater than or equal to the target voltage drop threshold. That is, this embodiment dynamically determines the voltage drop threshold of the battery based on its state parameters at the start and end of the same charge cycle. Because different degrees of battery aging result in different state parameters, this embodiment dynamically determines the voltage drop threshold based on different battery state parameters, fully considering the impact of battery aging on the state parameters, thus avoiding the problem of frequent recharging of aged batteries.

[0052] The above steps are explained in detail below:

[0053] In S410, the first state parameter and the second state parameter are the state parameters of the battery at different stages during the same charging process, and are used to characterize the degree of aging of the battery at the corresponding stage.

[0054] For example, the first state parameter can be used to characterize the degree of aging of the battery at the beginning of the same charge, and the second state parameter can be used to characterize the degree of aging of the battery at the end of the same charge.

[0055] Taking the battery's state parameters at the start and end of this charge as an example, the first state parameter may include, but is not limited to, the first environmental state parameter and the first battery impedance, and the second state parameter may include, but is not limited to, the second environmental state parameter and the second battery impedance.

[0056] The first environmental state parameter is the environmental state parameter of the battery at the start of charging, which may include, for example, the battery temperature at the start of charging. The second environmental state parameter is the environmental state parameter of the battery at the end of charging, which may include, for example, the battery temperature at the end of charging.

[0057] The first battery impedance can be the sum of the battery's actual internal resistance at the start of charging and the internal resistance of the board-to-board connector. Similarly, the second battery impedance can be the sum of the battery's actual internal resistance at the end of charging and the internal resistance of the board-to-board connector.

[0058] This application does not limit the specific process for obtaining environmental state parameters and battery impedance. For example, a temperature sensor can be used to measure the battery temperature at the start and end of charging to obtain the first and second environmental state parameters. The internal resistance of the battery and the internal resistance of the board-to-board connector can be measured through static excitation and high-load cutoff to obtain the first and second battery impedances, thereby obtaining the first and second state parameters, which provide a basis for subsequently determining the voltage drop threshold. For example, when an electronic device plugs or unplugs a charger, the battery impedance can be calculated using the ratio of transient voltage to current.

[0059] In S420, the target voltage drop threshold is used to determine whether the battery needs to be charged. For example, when the battery's voltage drop is greater than or equal to the target voltage drop threshold, the battery is charged. That is, when the electronic device receives the actual battery voltage V... bat ≤V max -V ′ falling When, that is, the charger is controlled to charge the battery, where V max For full charge voltage, V ′ falling This is the target voltage drop threshold.

[0060] Because the target voltage drop threshold is dynamically determined based on the battery's state parameters at different stages, and the battery's state parameters at different stages can characterize the degree of battery aging at different stages, that is, the embodiments of this application can dynamically determine the voltage drop threshold based on the degree of battery aging. In this way, the battery can be avoided from being frequently recharged in a short period of time. Moreover, the embodiments of this application only need to adjust the voltage drop threshold, without reducing the battery's charging capacity based on the number of recharges, thereby avoiding the situation where the battery is connected to the charger for a long time but is not fully charged during use.

[0061] In S430, taking this charging cycle as an example, after the current charging cycle ends, if the battery voltage drop value is greater than or equal to the target voltage drop threshold, the electronic device can control the charger to continue charging the battery.

[0062] As the battery ages, the target voltage drop threshold will continue to increase, thus avoiding the need for frequent recharging in a short period of time.

[0063] Figure 5 A flowchart illustrating another battery charging method provided in this application embodiment. Figure 5 and Figure 4 The difference is that, Figure 4 The S420 in the text can be further refined into Figure 5 S510-S530 in the series.

[0064] S510. Determine the time interval between the end time of the previous charge and the start time of the next charge in two adjacent charging processes.

[0065] This time interval is the battery recharge interval. Taking this charge as an example, the electronic device can obtain the battery's previous charge cutoff time and the current charge start time by searching the log. The recharge interval for this charge can be obtained based on the difference between the two times, providing an accurate basis for determining the target state parameters.

[0066] S520. Determine the target state parameter from the first state parameter and the second state parameter according to the time interval.

[0067] Different recharge intervals indicate different environments in which the electronic device is located. For example, when the interval is greater than or equal to the interval threshold, it means the electronic device has moved from a harsh environment to a better one. When the interval is less than the interval threshold, it means the electronic device has moved from a better environment to a harsh one, or the user is using the electronic device while charging. The battery's state parameters differ under different environments. Based on the current recharge interval, the target state parameters corresponding to the environment in which the electronic device is located can be determined from the first and second state parameters, allowing for a more accurate determination of the target voltage drop threshold.

[0068] The harsh environment can be a high-temperature environment or a low-temperature environment, while the favorable environment can be a normal-temperature environment. In some embodiments, the high-temperature environment can be an environment with a temperature greater than 35°C, the low-temperature environment can be an environment with a temperature less than 18°C, and the normal-temperature environment can be an environment with a temperature of around 25°C. In practical applications, the high-temperature environment and the low-temperature environment can also be determined comprehensively based on factors such as battery performance.

[0069] In some embodiments, if the time interval is greater than or equal to the interval threshold, the second state parameter is determined as the target state parameter.

[0070] If the time interval is less than the interval threshold, the parameter with the larger value between the first state parameter and the second state parameter is determined as the target state parameter.

[0071] For example, the interval threshold can be determined by the user based on the battery's performance, and different batteries can correspond to different interval thresholds.

[0072] For example, the interval threshold can also be determined based on the recharge interval of batteries of the same type. For instance, the recharge interval of multiple batteries of the same type within a preset time period can be averaged, and the interval threshold can be determined based on the average value.

[0073] For example, the interval threshold can also be the time interval between the previous recharge. Taking the current charge as an example, the recharge interval for this charge is the difference between the start time of this charge and the end time of the previous charge, and the time interval between the previous recharge is the difference between the start time of the previous charge and the end time of the charge before that. That is, the embodiments of this application can dynamically determine the target state parameters based on the relationship between the time intervals of two adjacent recharges, thereby improving the accuracy of the target state parameters.

[0074] For example, when the time interval is greater than or equal to the interval threshold, it indicates that the electronic device has moved from a harsh environment to a better environment. At this time, the state parameter corresponding to the charging cut-off, that is, the second state parameter, can be determined as the target state parameter.

[0075] For example, when the time interval is less than the time interval, it indicates that the electronic device has moved from a better environment to a harsher environment, or that the user is using the device while charging. In this case, the larger of the state parameter at the end of charging and the state parameter at the beginning of charging can be determined as the target state parameter. For instance, if the value of the first state parameter is greater than the value of the second state parameter, then the first state parameter value is determined as the target state parameter. If the value of the first state parameter is less than the value of the second state parameter, then the second state parameter value is determined as the target state parameter. If the value of the first state parameter is equal to the value of the second state parameter, then either the first state parameter value or the second state parameter value is determined as the target state parameter.

[0076] The embodiments of this application can dynamically determine the target state parameters according to the size of the recharge interval, and use the target state parameters to calculate the target voltage drop threshold, thereby improving the accuracy of the target voltage drop threshold and effectively avoiding frequent recharge of the battery in a short period of time, thus protecting the battery.

[0077] S530. Based on the charging cutoff current and target state parameters at the charging cutoff point of the same charging cycle, the first voltage drop threshold is compensated, and the compensated first voltage drop threshold is determined as the target voltage drop threshold.

[0078] The first voltage drop threshold is the voltage drop threshold corresponding to the previous charge. For example, when the battery is being recharged for the first time, the first voltage drop threshold can be an initial voltage drop threshold. This initial threshold can be dynamically adjusted based on the battery's aging level, serving as the voltage drop threshold for each subsequent recharge. When the battery is being recharged for the Nth time (N is an integer greater than 1), the first voltage drop threshold can be the voltage drop threshold corresponding to the previous recharge. That is, in this embodiment, the voltage drop threshold corresponding to the previous recharge can be dynamically adjusted based on the battery's aging level, preventing the battery from being repeatedly charged in a short period as it ages, thus promoting battery health and reducing the likelihood of battery accidents.

[0079] For example, an electronic device can input the charging cut-off current, target state parameters and first voltage drop threshold into a voltage compensation model to obtain the compensated first voltage drop threshold, which is also the target voltage drop threshold.

[0080] For example, the electronic device may also determine the compensation value of the first voltage drop threshold based on the charging cut-off current and the target state parameters at the charging cut-off point, and then compensate the first voltage drop value based on the compensation value to obtain the target voltage drop threshold.

[0081] The target voltage drop threshold can be greater than or less than the first voltage drop threshold.

[0082] The embodiments of this application can dynamically determine the target state parameters of the battery based on the battery recharge interval, and then dynamically compensate the voltage drop threshold corresponding to the previous recharge based on the target state parameters and the charging cutoff current. This can more accurately determine the voltage drop threshold corresponding to the next recharge and avoid the battery being recharged again in a short period of time after the charging cutoff.

[0083] Taking the target state parameters, including the target environmental state parameters and the target battery impedance, as an example, the first voltage drop threshold can be compensated for in the following manner:

[0084] Obtain the first full charge voltage of the battery under the target environmental conditions and the second full charge voltage of the battery at the reference temperature;

[0085] The voltage drop threshold compensation value is determined based on the difference between the first full charge voltage and the second full charge voltage, as well as the charging cutoff current and the target battery impedance.

[0086] The compensated first voltage drop threshold is determined based on the first voltage drop threshold and the voltage drop threshold compensation value.

[0087] For example, when the first state parameter includes a first environmental state parameter and a first battery impedance, and the second state parameter includes a second environmental state parameter and a second battery impedance, the target state parameter may include a target environmental state parameter and a target battery impedance, and the target environmental state parameter and the target battery impedance both belong to the first state parameter or the second state parameter.

[0088] A battery's full-charge voltage varies under different environmental conditions, specifically related to its performance parameters. Electronic devices can store the battery's full-charge voltage under these different environmental conditions. The first full-charge voltage is the battery's full-charge voltage under the target environmental conditions. The second full-charge voltage is the battery's full-charge voltage at a reference temperature, such as 25°C.

[0089] The voltage drop threshold compensation value can be determined based on the first full-charge voltage, the second full-charge voltage, the charging cut-off current, and the target battery impedance. For example, ΔV = I... cg *R n +V tn Where ΔV is the voltage drop threshold compensation value, and R n For the target battery impedance, I cg V is the charging cutoff current at the end of this charging cycle. tn V is the difference between the second full charge voltage and the first full charge voltage. tn =V tm -V lim V tm For the second full charge voltage, V lim This is the first full charge voltage.

[0090] The compensated first voltage sag threshold can be determined based on the first voltage sag threshold and the voltage sag threshold compensation value. For example, V ′ falling =V falling0 +ΔV, where V falling0 This is the first voltage drop threshold.

[0091] This embodiment dynamically compensates for the first voltage drop threshold based on the target battery impedance and target battery temperature, combined with the full charge voltage of the battery at room temperature and target battery temperature. This avoids the problem of the battery not being fully charged due to temporary user behavior, improves the user experience, and fully utilizes the maximum usable capacity of the battery while protecting it.

[0092] Figure 6 A flowchart illustrating another battery charging method provided in this application embodiment. Figure 6 and Figure 5 The difference is that, Figure 6 S610-S620 can also be included after S520.

[0093] S610: Obtain the discharge current of the battery after the same charging cycle ends.

[0094] Taking this charging example again, when an electronic device is used while charging, the battery discharge current is likely to be relatively large. In order to avoid the battery voltage dropping rapidly after charging is stopped and exceeding the corresponding voltage drop threshold, which would lead to repeated charging of the battery and the battery being discharged in a high voltage (full charge) state, thus affecting the battery life, this application embodiment can combine the charging current and the discharging current to determine the target voltage drop threshold.

[0095] S620. Based on the charging cutoff current, the discharging current and the target state parameters, the first voltage drop threshold is compensated, and the compensated first voltage drop threshold is determined as the target voltage drop threshold.

[0096] For example, the sum of the charging cutoff current and the discharging current can be determined, and the first voltage drop threshold can be compensated based on the target state parameter of the sum to obtain the target voltage drop threshold.

[0097] For example, V ′ falling =V falling0 +(I cg +I dcg )*R n +V tn .

[0098] In other words, when electronic devices are used while charging, the target voltage drop threshold can be further increased, and the voltage threshold for triggering recharging can be further reduced, allowing the battery to maintain a relatively low capacity while charging and using, thus further protecting battery health. When the user ends use the device, V ′ falling It will decrease rapidly, thereby raising the recharge threshold voltage to trigger charging again. Due to the follow-up compensation mechanism, there is less empty capacity at the top, allowing it to quickly return to full charge without affecting the user experience.

[0099] Taking this charging as an example, the following will combine... Figure 7 The battery charging process provided in the embodiments of this application will be described.

[0100] S710, at the start of this charging, record the battery impedance and battery temperature.

[0101] S720, at the end of this charging cycle, record the battery impedance and battery temperature again.

[0102] S730. Is the time interval between the start time of this charging and the end time of the previous charging greater than the interval threshold T? If yes, then execute S740; otherwise, execute S750.

[0103] S740: Utilizes battery impedance and battery temperature at charging cutoff to perform voltage drop threshold compensation, thereby obtaining the target voltage drop threshold.

[0104] S750 uses the larger battery impedance at the start and end of charging, and the corresponding battery temperature, to perform voltage drop threshold compensation, thus obtaining the target voltage drop threshold.

[0105] S760: Determine whether the voltage drop threshold of the battery at the charging cutoff point is greater than or equal to the target voltage drop threshold. If yes, execute S770; otherwise, return to execute S760.

[0106] S770, charge the battery.

[0107] The embodiments of this application can dynamically determine the voltage drop threshold according to the aging degree of the battery, so that the battery will not be frequently recharged in a short period of time. Moreover, when the user is using the electronic device while charging, the battery can maintain a relatively low capacity, which is beneficial to battery health and less likely to trigger battery accidents.

[0108] It should be noted that the battery charging method provided in this application embodiment can be executed by a battery charging device or a processing module within the battery charging device for executing the battery charging method. This application embodiment uses the execution of the battery charging method by a battery charging device as an example to illustrate the battery charging device provided in this application embodiment.

[0109] Figure 8 This is a schematic diagram of the structure of a battery charging device provided in an embodiment of this application.

[0110] like Figure 8 As shown, the battery charging device 800 may include:

[0111] The acquisition module 801 is used to acquire the first state parameter and the second state parameter of the battery. The first state parameter is used to characterize the aging degree of the battery at the start of charging in the same charge, and the second state parameter is used to characterize the aging degree of the battery at the end of charging in the same charge.

[0112] The determination module 802 is used to determine the target voltage drop threshold of the battery based on the first state parameter and the second state parameter.

[0113] The charging module 803 is used to charge the battery when the voltage drop value of the battery after the same charging cutoff is greater than or equal to the target voltage drop threshold.

[0114] In this embodiment, a first state parameter and a second state parameter of the battery are obtained. The first state parameter characterizes the degree of aging of the battery at the start of the same charge cycle, and the second state parameter characterizes the degree of aging of the battery at the end of the same charge cycle. A target voltage drop threshold for the battery is determined based on the first and second state parameters. The battery is charged if the voltage drop value after the end of the same charge cycle is greater than or equal to the target voltage drop threshold. That is, this embodiment dynamically determines the voltage drop threshold of the battery based on its state parameters at the start and end of the same charge cycle. Because different degrees of battery aging result in different state parameters, this embodiment dynamically determines the voltage drop threshold based on different battery state parameters, fully considering the impact of battery aging on the state parameters, thus avoiding the problem of frequent recharging of aged batteries.

[0115] In some possible implementations of the embodiments of this application, the determining module 802 is specifically used for:

[0116] Determine the time interval between the end time of the previous charge and the start time of the next charge in two consecutive charging processes;

[0117] The target state parameters are determined from the first state parameters and the second state parameters based on the time interval.

[0118] The battery charging device 800 may also include:

[0119] The compensation module is used to compensate for the first voltage drop threshold based on the charging cutoff current and target state parameters at the charging cutoff time of the same charging cycle.

[0120] Module 802 is specifically used for:

[0121] The compensated first voltage drop threshold is determined as the target voltage drop threshold;

[0122] The first voltage drop threshold is the voltage drop threshold corresponding to the previous charge of the battery.

[0123] In some possible implementations of the embodiments of this application, the determining module 802 is specifically used for:

[0124] If the time interval is greater than or equal to the interval threshold, the second state parameter is determined as the target state parameter;

[0125] If the time interval is less than the interval threshold, the parameter with the larger value between the first state parameter and the second state parameter is determined as the target state parameter.

[0126] In some possible implementations of the embodiments of this application, the target state parameters include target environmental state parameters and target battery impedance;

[0127] The acquisition module 801 is also used to acquire the first full charge voltage of the battery under the target environmental state parameters and the second full charge voltage of the battery at the reference temperature;

[0128] The determining module 802 is further configured to determine a voltage drop threshold compensation value based on the difference between the first full charge voltage and the second full charge voltage, as well as the charging cut-off current and the target battery impedance; and to determine a compensated first voltage drop threshold based on the first voltage drop threshold and the voltage drop threshold compensation value.

[0129] In some possible implementations of the embodiments of this application, the acquisition module 801 is further configured to acquire the discharge current of the battery after the same charging cut-off after the determining module determines the target state parameter from the first state parameter and the second state parameter according to the time interval.

[0130] The compensation module is also used to compensate for the first voltage drop threshold based on the charging cutoff current, the discharging current and the target state parameters.

[0131] The determination module 802 is also used to determine the compensated first voltage drop threshold as the target voltage drop threshold.

[0132] The embodiments of this application can dynamically determine the voltage drop threshold according to the aging degree of the battery, so that the battery will not be frequently recharged in a short period of time. Moreover, when the user is using the electronic device while charging, the battery can maintain a relatively low capacity, which is beneficial to battery health and less likely to trigger battery accidents.

[0133] The battery charging device in this application embodiment can be a device or a component in an electronic device, such as an integrated circuit or a chip. For example, the electronic device can be a mobile phone, tablet computer, laptop computer, PDA, in-vehicle electronic device, mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, ultra-mobile personal computer (UMPC), netbook, or personal digital assistant (PDA), etc. It can also be a server, network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. This application embodiment does not specifically limit the device.

[0134] The electronic device in this application embodiment can be a terminal with an operating system. This operating system can be Android, iOS, or other possible operating systems; this application embodiment does not specifically limit the specific operating system used.

[0135] The battery charging device provided in this application embodiment can achieve… Figures 1 to 7 The various processes in the battery charging method embodiments can achieve the same technical effect, and will not be described again here to avoid repetition.

[0136] like Figure 9 As shown, this application embodiment also provides an electronic device 900, including a processor 901 and a memory 902. The memory 902 stores programs or instructions that can run on the processor 901. When the program or instructions are executed by the processor 901, they implement the various steps of the above-described battery charging method embodiment and can achieve the same technical effect. To avoid repetition, they will not be described again here.

[0137] It should be noted that the electronic devices in the embodiments of this application include the mobile terminals and non-mobile terminals mentioned above.

[0138] Figure 10 This is a schematic diagram of the hardware structure of an electronic device provided in an embodiment of this application.

[0139] The electronic device 1000 includes, but is not limited to, components such as: radio frequency unit 1001, network module 1002, audio output unit 1003, input unit 1004, sensor 1005, display unit 1006, user input unit 1007, interface unit 1008, memory 1009, and processor 1010.

[0140] Those skilled in the art will understand that the electronic device 1000 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 1010 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 10 The structure of the electronic device 1000 shown does not constitute a limitation on the electronic device 1000. The electronic device 1000 may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be described in detail here.

[0141] The processor 1010 is used to acquire a first state parameter and a second state parameter of the battery. The first state parameter is used to characterize the aging degree of the battery at the start of charging in the same charge, and the second state parameter is used to characterize the aging degree of the battery at the end of charging in the same charge.

[0142] The target voltage drop threshold of the battery is determined based on the first state parameter and the second state parameter.

[0143] The battery is charged if the voltage drop after the same charge cutoff is greater than or equal to the target voltage drop threshold.

[0144] In this embodiment, a first state parameter and a second state parameter of the battery are obtained. The first state parameter characterizes the degree of aging of the battery at the start of the same charge cycle, and the second state parameter characterizes the degree of aging of the battery at the end of the same charge cycle. A target voltage drop threshold for the battery is determined based on the first and second state parameters. The battery is charged if the voltage drop value after the end of the same charge cycle is greater than or equal to the target voltage drop threshold. That is, this embodiment dynamically determines the voltage drop threshold of the battery based on its state parameters at the start and end of the same charge cycle. Because different degrees of battery aging result in different state parameters, this embodiment dynamically determines the voltage drop threshold based on different battery state parameters, fully considering the impact of battery aging on the state parameters, thus avoiding the problem of frequent recharging of aged batteries.

[0145] In some possible implementations of embodiments of this application, the processor 1010 is specifically used for:

[0146] Determine the time interval between the end time of the previous charge and the start time of the next charge in two consecutive charging processes;

[0147] The target state parameters are determined from the first state parameters and the second state parameters based on the time interval.

[0148] Based on the charging cutoff current and target state parameters at the charging cutoff point of the same charging cycle, the first voltage drop threshold is compensated, and the compensated first voltage drop threshold is determined as the target voltage drop threshold.

[0149] The first voltage drop threshold is the voltage drop threshold corresponding to the previous charge of the battery.

[0150] In some possible implementations of embodiments of this application, the processor 1010 is specifically used for:

[0151] If the time interval is greater than or equal to the interval threshold, the second state parameter is determined as the target state parameter;

[0152] If the time interval is less than the interval threshold, the parameter with the larger value between the first state parameter and the second state parameter is determined as the target state parameter.

[0153] In some possible implementations of the embodiments of this application, the target state parameters include target environmental state parameters and target battery impedance;

[0154] Processor 1010, specifically used for:

[0155] Obtain the first full charge voltage of the battery under the target environmental conditions and the second full charge voltage of the battery at the reference temperature;

[0156] The voltage drop threshold compensation value is determined based on the difference between the first full charge voltage and the second full charge voltage, as well as the charging cutoff current and the target battery impedance.

[0157] The compensated first voltage drop threshold is determined based on the first voltage drop threshold and the voltage drop threshold compensation value.

[0158] In some possible implementations of embodiments of this application, the processor 1010 is specifically used for:

[0159] After determining the target state parameter from the first state parameter and the second state parameter according to the time interval, the discharge current of the battery after the same charge cutoff is obtained.

[0160] Based on the charging cutoff current, discharging current, and target state parameters, the first voltage drop threshold is compensated, and the compensated first voltage drop threshold is determined as the target voltage drop threshold.

[0161] The embodiments of this application can dynamically determine the voltage drop threshold according to the aging degree of the battery, so that the battery will not be frequently recharged in a short period of time. Moreover, when the user is using the electronic device while charging, the battery can maintain a relatively low capacity, which is beneficial to battery health and less likely to trigger battery accidents.

[0162] It should be understood that, in this embodiment, the input unit 1004 may include a graphics processing unit (GPU) 10041 and a microphone 10042. The GPU 10041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 1006 may include a display panel 10061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 1007 includes at least one of a touch panel 10071 and other input devices 10072. The touch panel 10071 is also called a touch screen. The touch panel 10071 may include a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0163] The memory 1009 can be used to store software programs and various data. The memory 1009 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 1009 may include volatile memory or non-volatile memory, or both. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 909 in the embodiments of this application includes, but is not limited to, these and any other suitable types of memory.

[0164] The processor 1010 may include one or more processing units; optionally, the processor 1010 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into the processor 1010.

[0165] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described battery charging method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0166] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0167] This application also provides a chip, which includes a processor and a communication interface. The communication interface and the processor are coupled. The processor is used to run programs or instructions to implement the various processes of the above-described battery charging method embodiments and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0168] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0169] This application provides a computer program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the battery charging method embodiments described above, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0170] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0171] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the related technology, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0172] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A battery charging method, characterized in that, Applied to an electronic device, the electronic device including a battery, the method includes: Obtain a first state parameter and a second state parameter of the battery. The first state parameter is used to characterize the degree of aging of the battery at the start of the same charge and the second state parameter is used to characterize the degree of aging of the battery at the end of the same charge. The target voltage drop threshold of the battery is determined based on the first state parameter and the second state parameter. If the voltage drop of the battery after the same charging cutoff is greater than or equal to the target voltage drop threshold, the battery is charged. Determining the target voltage drop threshold of the battery based on the first state parameter and the second state parameter includes: Determine the time interval between the end time of the previous charge and the start time of the next charge in two consecutive charging processes; Based on the time interval, a target state parameter is determined from the first state parameter and the second state parameter; Based on the charging cutoff current at the charging cutoff point of the same charging cycle and the target state parameters, the first voltage drop threshold is compensated, and the compensated first voltage drop threshold is determined as the target voltage drop threshold. Wherein, the first voltage drop threshold is the voltage drop threshold corresponding to the previous charge of the battery.

2. The method according to claim 1, characterized in that, Determining the target state parameter from the first state parameter and the second state parameter based on the time interval includes: If the time interval is greater than or equal to the interval threshold, the second state parameter is determined as the target state parameter; If the time interval is less than the interval threshold, the parameter with the larger value between the first state parameter and the second state parameter is determined as the target state parameter.

3. The method according to claim 1 or 2, characterized in that, The target state parameters include target environmental state parameters and target battery impedance; The step of compensating for the first voltage drop threshold based on the charging cutoff current at the time of charging cutoff in the same charging cycle and the target state parameters includes: Obtain the first full charge voltage of the battery under the target environmental conditions and the second full charge voltage of the battery at the reference temperature; The voltage drop threshold compensation value is determined based on the difference between the first full charge voltage and the second full charge voltage, the charging cutoff current, and the target battery impedance. The compensated first voltage drop threshold is determined based on the first voltage drop threshold and the voltage drop threshold compensation value.

4. The method according to claim 1 or 2, characterized in that, After determining the target state parameter from the first state parameter and the second state parameter according to the time interval, the method further includes: Obtain the discharge current of the battery after the same charging cycle is completed; The first voltage drop threshold is compensated based on the charging cutoff current, the discharging current, and the target state parameters, and the compensated first voltage drop threshold is determined as the target voltage drop threshold.

5. A battery charging device, characterized in that, Applied to an electronic device, the electronic device including a battery, the device includes: The acquisition module is used to acquire a first state parameter and a second state parameter of the battery. The first state parameter is used to characterize the aging degree of the battery at the start of the same charge and the second state parameter is used to characterize the aging degree of the battery at the end of the same charge. The determining module is used to determine the target voltage drop threshold of the battery based on the first state parameter and the second state parameter; A charging module is used to charge the battery when the voltage drop value of the battery after the same charging cutoff is greater than or equal to the target voltage drop threshold. The determining module is specifically used for: Determine the time interval between the end time of the previous charge and the start time of the next charge in two consecutive charging processes; Based on the time interval, a target state parameter is determined from the first state parameter and the second state parameter; The device further includes: The compensation module is used to compensate for the first voltage drop threshold based on the charging cutoff current at the charging cutoff time of the same charging cycle and the target state parameters. The determining module is specifically used for: The compensated first voltage drop threshold is determined as the target voltage drop threshold; Wherein, the first voltage drop threshold is the voltage drop threshold corresponding to the previous charge of the battery.

6. The apparatus according to claim 5, characterized in that, The determining module is specifically used for: If the time interval is greater than or equal to the interval threshold, the second state parameter is determined as the target state parameter; If the time interval is less than the interval threshold, the parameter with the larger value between the first state parameter and the second state parameter is determined as the target state parameter.

7. The apparatus according to claim 5 or 6, characterized in that, The target state parameters include target environmental state parameters and target battery impedance; The acquisition module is further configured to acquire the first full charge voltage of the battery under the target environmental state parameters and the second full charge voltage of the battery at the reference temperature; The determining module is further configured to determine a voltage drop threshold compensation value based on the difference between the first full charge voltage and the second full charge voltage, the charging cutoff current, and the target battery impedance; and to determine a compensated first voltage drop threshold based on the first voltage drop threshold and the voltage drop threshold compensation value.

8. The apparatus according to claim 5 or 6, characterized in that, The acquisition module is further configured to acquire the discharge current of the battery after the same charging cut-off, after the determining module determines the target state parameter from the first state parameter and the second state parameter according to the time interval; The compensation module is further configured to compensate the first voltage drop threshold based on the charging cutoff current, the discharging current, and the target state parameters. The determining module is further configured to determine the compensated first voltage drop threshold as the target voltage drop threshold.

9. An electronic device, characterized in that, The electronic device includes a processor and a memory, the memory storing programs or instructions that can run on the processor, the programs or instructions being executed by the processor to implement the steps of the method as described in any one of claims 1 to 4.

10. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the method as described in any one of claims 1 to 4.

11. A computer program product, characterized in that, The program product is stored in a storage medium and is executed by at least one processor to implement the steps of the method as described in any one of claims 1 to 4.

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