Battery control method, device, electronic device and storage medium

Abstract

The present application discloses a battery control method, device, electronic device, and storage medium. These methods obtain a target parameter for a battery within a predetermined historical time period, where the target parameter represents the battery's minimum remaining capacity within the predetermined historical time period. Based on the target parameter, the battery's upper charging voltage limit is adjusted to adjust the battery's baseline full-charge capacity to a first baseline full-charge capacity. The first baseline full-charge capacity is negatively correlated with the minimum remaining capacity. This reduces the negative impact of fast charging on battery life, achieving a long cycle life for fast-chargeable batteries.

Description

Technical Field

[0001] The present application relates to the field of electronic technology, and more specifically, to a battery control method, device, electronic device, and storage medium. Background Art

[0002] Currently, some electronic devices using rechargeable batteries use fast charging technology to charge the batteries, but fast charging will shorten the cycle life of the batteries.

[0003] Therefore, how to improve the cycle life of batteries under fast charging technology has become a technical problem that needs to be solved urgently. Summary of the Invention

[0004] The purpose of this application is to provide a battery control method, device, electronic device, and storage medium, including the following technical solutions:

[0005] A battery control method, wherein the battery is a fast-chargeable battery, the method comprising:

[0006] Obtaining a target parameter of the battery within a predetermined historical time period, the target parameter representing a remaining capacity interval to which the lowest remaining capacity of the battery within the predetermined historical time period belongs; different remaining capacity intervals have different remaining capacity values;

[0007] According to the target parameter, the charging upper limit voltage of the battery is adjusted to adjust the reference full charge capacity of the battery to a first reference full charge capacity corresponding to the remaining capacity interval to which the minimum remaining capacity belongs; the first reference full charge capacity is negatively correlated with the remaining capacity interval to which the minimum remaining capacity belongs.

[0008] In the above method, preferably, the target parameter of the battery is the capacity consumption level of the battery;

[0009] The capacity consumption level of the battery is negatively correlated with the remaining capacity interval to which the minimum remaining capacity of the battery belongs.

[0010] In the above method, preferably, obtaining the target parameters of the battery within a predetermined historical time period includes:

[0011] Obtaining at least the lowest remaining capacity of the battery within the predetermined historical time period;

[0012] A capacity consumption level of the battery is determined based on at least a minimum remaining capacity of the battery.

[0013] In the above method, preferably, the step of obtaining at least the lowest remaining capacity of the battery within the predetermined historical time period includes:

[0014] Obtaining the lowest remaining capacity and the lowest equivalent open circuit voltage of the battery within the predetermined historical time period;

[0015] The determining the capacity consumption level of the battery at least according to the minimum remaining capacity of the battery includes:

[0016] The capacity consumption level of the battery is determined according to the minimum remaining capacity and the minimum equivalent open circuit voltage of the battery.

[0017] In the above method, preferably, adjusting the upper charging limit voltage of the battery according to the target parameter includes:

[0018] If the target parameter is a target capacity consumption level and the upper charging limit voltage of the battery is a limit charging upper limit voltage, prohibiting adjustment of the upper charging limit voltage of the battery; otherwise, adjusting the upper charging limit voltage of the battery according to the target parameter;

[0019] The target capacity consumption level indicates that the lowest remaining capacity of the battery within the predetermined historical time period belongs to a target remaining capacity interval, and the remaining capacity value within the target remaining capacity interval is smaller than the remaining capacity value within the non-target remaining capacity interval.

[0020] In the above method, preferably, adjusting the upper charging limit voltage of the battery according to the target parameter includes:

[0021] determining a voltage adjustment step size according to the capacity consumption level;

[0022] Based on the voltage adjustment step and the ultimate charging upper limit voltage of the battery, the charging upper limit voltage of the battery is adjusted from the current first charging upper limit voltage to a second charging upper limit voltage; the voltage difference between the second charging upper limit voltage and the ultimate charging upper limit voltage is the voltage adjustment step.

[0023] The above method preferably further comprises:

[0024] Obtaining a charging frequency of the battery within the predetermined historical time period;

[0025] According to the charging frequency, the full charge cut-off current of the battery is adjusted to a first full charge cut-off current; the first full charge cut-off current is positively correlated with the charging frequency.

[0026] A battery control device, wherein the battery is a fast-chargeable battery, and the device comprises:

[0027] a parameter acquisition module, configured to acquire a target parameter of the battery within a predetermined historical time period, wherein the target parameter represents a remaining capacity interval to which the lowest remaining capacity of the battery within the predetermined historical time period belongs; and different remaining capacity intervals have different remaining capacity values;

[0028] an adjustment module, configured to adjust, according to the target parameter, the charging upper limit voltage of the battery, so as to adjust the reference full charge capacity of the battery to a first reference full charge capacity corresponding to the remaining capacity interval to which the minimum remaining capacity belongs; the first reference full charge capacity is negatively correlated with the remaining capacity interval to which the minimum remaining capacity belongs.

[0029] An electronic device, comprising:

[0030] Memory, used to store programs;

[0031] The processor is configured to call and execute the program in the memory, and implement the various steps of the battery control method as described above by executing the program.

[0032] A readable storage medium stores a computer program thereon, wherein when the computer program is executed by a processor, each step of the battery control method as described above is implemented.

[0033] Through the above scheme, it can be seen that the battery control method, device, electronic device and storage medium provided by the present application obtain the target parameter of the battery (fast-chargeable battery) within a predetermined historical time period, and the target parameter represents the minimum remaining capacity of the battery within the predetermined historical time period; according to the target parameter, the charging upper limit voltage of the battery is adjusted to adjust the battery's reference full charge capacity to a first reference full charge capacity; the first reference full charge capacity is negatively correlated with the minimum remaining capacity. Since the minimum remaining capacity of the battery within the predetermined historical time period reflects the battery capacity consumption trend of the electronic device to which the battery belongs, the present application adjusts the battery's reference full charge capacity according to the actual consumption degree of the battery capacity of the electronic device, so that the battery's reference full charge capacity is adapted to the actual consumption degree of the battery capacity of the electronic device, that is, if the electronic device consumes more battery capacity, the battery's reference full charge capacity can be increased; if the electronic device consumes less battery capacity, the battery's reference full charge capacity can be lowered, thereby reducing the negative impact of fast charging on battery life and achieving a long cycle service life of the fast-chargeable battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. 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.

[0035] Figure 1 A flowchart of an implementation of the battery control method provided in an embodiment of the present application;

[0036] Figure 2 A flowchart for obtaining target parameters of a battery within a predetermined historical time period provided in an embodiment of the present application;

[0037] Figure 3 A flowchart for adjusting the upper charging limit voltage of a battery according to target parameters provided in an embodiment of the present application;

[0038] Figure 4 A schematic structural diagram of a battery control device provided in an embodiment of the present application;

[0039] Figure 5 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0040] The terms "first," "second," "third," "fourth," and so on (if any) in the specification, claims, and drawings are used to distinguish similar parts and are not necessarily used to describe a particular order or sequential sequence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated herein. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0042] The battery control method provided in the embodiments of the present application can be used in electronic devices that can be powered by at least a fast-chargeable battery, such as a mobile phone, a tablet computer, a laptop computer, etc. Optionally, the electronic device can be powered by both a fast-chargeable battery and an external power source (e.g., mains electricity).

[0043] Although fast-chargeable batteries can be fully charged in a short period of time, the cycle life of current fast-chargeable batteries is generally short.

[0044] The battery management method provided in the embodiment of the present application can be implemented by a battery management system (BMS).

[0045] like Figure 1 As shown, a flowchart of an implementation of the battery control method provided in an embodiment of the present application may include:

[0046] Step S101: Obtain a target parameter of the battery within a predetermined historical time period. The target parameter represents the remaining capacity interval to which the lowest remaining capacity of the battery within the predetermined historical time period belongs (for ease of distinction, this remaining capacity interval is recorded as a first remaining capacity interval); different remaining capacity intervals have different remaining capacity values.

[0047] The scheduled historical time period refers to the period closest to the current time, such as the last week, the last 3 days, the last 10 days, etc.

[0048] Optionally, the battery control method provided in the embodiment of the present application may be executed periodically, wherein the execution period may be equal to the length of the above-mentioned predetermined historical time period, or the execution period may be greater than the length of the above-mentioned predetermined historical time period.

[0049] In the present application, multiple remaining capacity intervals are pre-set, and the lengths of the remaining capacity intervals may all be the same, or the lengths of the remaining capacity intervals may be partially the same and partially different, or the lengths of the remaining capacity intervals may all be different.

[0050] When the lengths of the remaining capacity intervals are partially the same and partially different, the length of each remaining capacity interval in the remaining capacity intervals with the same length is smaller than the length of each remaining capacity interval with different lengths, and the value of the remaining capacity in each remaining capacity interval in the remaining capacity intervals with the same length is smaller than the value of the remaining capacity in each remaining capacity interval with different lengths.

[0051] When the lengths of the remaining capacity intervals are all different, the smaller the remaining capacity value in the remaining capacity interval, the shorter the remaining capacity interval; conversely, the larger the remaining capacity value in the remaining capacity interval, the longer the remaining capacity interval.

[0052] Optionally, the number of the above-mentioned remaining capacity intervals, the length of the remaining capacity intervals, and the maximum and minimum values of the remaining capacity values in all remaining capacity intervals can be determined by technicians / experts based on experience, or can be obtained through big data analysis, or can be obtained by combining the experience of technicians / experts and big data analysis.

[0053] The big data involved in this application includes a large amount of battery usage data recorded by electronic devices that use rechargeable batteries (which may include fast-chargeable batteries and / or non-fast-chargeable batteries). Each electronic device records several pieces of data, and each piece of data records the remaining capacity of the rechargeable battery in the electronic device each time the rechargeable battery is connected to the charging circuit (i.e., charging starts) or the electronic device is shut down due to the remaining capacity of the rechargeable battery being too low.

[0054] As an example, by analyzing the above big data, the maximum value of the remaining capacity of the electronic device using the rechargeable battery can be determined, and then the technicians / experts can divide the remaining capacity within the range less than the maximum value of the remaining capacity into the above multiple remaining capacity intervals based on experience. Or,

[0055] After determining the maximum remaining capacity, the remaining capacity within the range less than the maximum remaining capacity is automatically divided into the aforementioned multiple remaining capacity intervals according to the setting rules for the number and length of the remaining capacity intervals. As an example, the number and length of the remaining capacity intervals can be set as configurable parameters by technicians / experts.

[0056] Step S102: adjusting the battery charging upper limit voltage according to the target parameter to adjust the battery's reference full charge capacity to a first reference full charge capacity corresponding to the first remaining capacity interval; the first reference full charge capacity is negatively correlated with the first remaining capacity interval.

[0057] The negative correlation between the first benchmark full charge capacity and the first remaining capacity interval means that: the smaller the remaining capacity value in the first remaining capacity interval, the larger the first benchmark full charge capacity; and the larger the remaining capacity value in the first remaining capacity interval, the smaller the first benchmark full charge capacity.

[0058] The smaller the remaining capacity value within the first remaining capacity interval, the greater the electronic device's demand for battery capacity, and the battery's baseline full charge capacity can be increased to provide the capacity required by the electronic device; the larger the remaining capacity value within the first remaining capacity interval, the smaller the electronic device's demand for battery capacity, and the battery's baseline full charge capacity can be reduced to reduce the negative impact of fast charging on the battery without affecting the electronic device's demand for capacity.

[0059] The reference full charge capacity of the battery is determined by the battery's upper charge limit voltage and lower discharge limit voltage. In the embodiment of the present application, the battery's lower discharge limit voltage remains unchanged, and only the upper charge limit voltage is adjusted.

[0060] The higher the battery's upper charge limit voltage, the greater the battery's base full charge capacity, while the lower the battery's upper charge limit voltage, the smaller the battery's base full charge capacity. In other words, the higher the battery's upper charge limit voltage, the more capacity can be charged into the battery, while the lower the battery's upper charge limit voltage, the less capacity can be charged into the battery. Therefore, by adjusting the battery's upper charge limit voltage, the amount of capacity charged into the battery can be changed. Based on this, the battery's base full charge capacity can be increased by increasing the battery's upper charge limit voltage to provide the capacity required by electronic devices, or the battery's base full charge capacity can be reduced by decreasing the battery's upper charge limit voltage, thereby reducing the negative impact of fast charging on the battery while not affecting the capacity requirements of electronic devices.

[0061] The battery control method provided in the embodiment of the present application obtains the target parameter of the battery in a predetermined historical time period, and the target parameter represents the minimum remaining capacity of the battery in the predetermined historical time period; according to the target parameter, the charging upper limit voltage of the battery is adjusted to adjust the base full charge capacity of the battery to a first base full charge capacity; the first base full charge capacity is negatively correlated with the minimum remaining capacity. Since the minimum remaining capacity of the battery in the predetermined historical time period reflects the battery capacity consumption trend of the electronic device to which the battery belongs, the present application adjusts the base full charge capacity of the battery according to the actual consumption degree of the battery capacity of the electronic device, so that the base full charge capacity of the battery is adapted to the actual consumption degree of the battery capacity of the electronic device, that is, if the electronic device consumes the battery capacity more seriously, the base full charge capacity of the battery can be increased; if the electronic device consumes the battery capacity less, the base full charge capacity of the battery can be lowered, thereby reducing the negative impact of fast charging on the battery life and achieving a long cycle life of the fast-chargeable battery.

[0062] In an optional embodiment, the target parameter of the battery may be a capacity consumption level of the battery, and the capacity consumption level is negatively correlated with a remaining capacity interval to which the lowest remaining energy of the battery belongs (ie, the aforementioned first remaining capacity interval).

[0063] The negative correlation between the battery capacity consumption level and the first remaining capacity interval means that: the smaller the remaining capacity value within the first remaining capacity interval, the higher the battery capacity consumption level, indicating that the electronic device uses the battery capacity more heavily; the smaller the remaining capacity value within the first remaining capacity interval, the lower the battery capacity consumption level, indicating that the electronic device uses the battery capacity less heavily.

[0064] In other words, this application classifies the consumption of battery capacity by electronic devices into different consumption levels, and adjusts the battery's upper charging voltage limit based on the battery's capacity consumption level, thereby adjusting the battery's reference full-charge capacity. Therefore, the higher the battery's capacity consumption level, the higher the battery's reference full-charge capacity. Conversely, the lower the battery's capacity consumption level, the lower the battery's reference full-charge capacity.

[0065] The battery capacity consumption level reflects the demand of electronic devices for battery capacity. The lower the battery capacity consumption level, the less the electronic device needs for battery capacity. The higher the battery capacity consumption level, the more the electronic device needs for battery capacity.

[0066] In an optional embodiment, a flowchart for obtaining the target parameters of the battery within a predetermined historical time period is as follows: Figure 2 As shown, this may include:

[0067] Step S201: obtaining at least the lowest remaining capacity of the battery within a predetermined historical time period.

[0068] In the present application, only the minimum remaining capacity of the battery within a predetermined historical time period may be obtained, or, in addition to obtaining the minimum remaining capacity of the battery within a predetermined historical time period, other information may also be obtained, such as the minimum equivalent open circuit voltage of the battery.

[0069] In an embodiment of the present application, the remaining capacity of the battery can be recorded each time the battery is connected to a charging circuit or is shut down due to low remaining capacity of the battery. After recording for a certain length of time (i.e., the length of a predetermined historical time period), a statistical analysis is performed on the remaining capacity of the battery recorded within the time period to determine the lowest value of the remaining capacity recorded within the time period (i.e., the lowest remaining capacity).

[0070] Similarly, the remaining capacity and equivalent open-circuit voltage of the battery can be recorded each time the battery is connected to a charging circuit or is shut down due to low remaining capacity of the battery. After recording for a certain period of time (i.e., the length of a predetermined historical time period), a statistical analysis is performed on the remaining capacity and equivalent open-circuit voltage of the battery recorded during the time period to determine the lowest value of the remaining capacity (i.e., the lowest remaining capacity) and the lowest equivalent open-circuit voltage recorded during the time period.

[0071] Step S202: determining the capacity consumption level of the battery based on at least the minimum remaining capacity of the battery.

[0072] When only the lowest remaining capacity of the battery within a predetermined historical time period is obtained, the remaining capacity interval to which the lowest remaining capacity belongs may be determined first, and then the capacity consumption level of the battery may be determined according to the correspondence between the remaining capacity interval and the capacity consumption level.

[0073] When obtaining the lowest remaining capacity and the lowest equivalent open-circuit voltage of the battery within a predetermined historical time period, the correspondence between the remaining capacity interval and the capacity consumption level (recorded as the first correspondence), as well as the correspondence between the equivalent open-circuit voltage interval and the capacity consumption level (recorded as the second correspondence) can be pre-set to determine the capacity consumption level of the battery.

[0074] As an example, the first correspondence and the second correspondence can be started simultaneously to determine a capacity consumption level respectively. As long as the capacity consumption level is determined using one of the correspondences, the battery's upper charging limit voltage is adjusted according to the capacity consumption level, without waiting for the other correspondence to determine the capacity consumption level. In this way, the capacity consumption level can be determined quickly, thereby improving the speed of determining the capacity consumption level.

[0075] As an example, one of the first correspondence and the second correspondence can be used preferentially to determine the capacity consumption level. Only when the capacity consumption level cannot be determined using this correspondence, the other correspondence can be used to determine the capacity consumption level. This can ensure the continued effectiveness of the battery control method.

[0076] In an optional embodiment, only the lowest equivalent open circuit voltage of the battery within a predetermined historical time period may be obtained. In this case, the equivalent open circuit voltage interval to which the lowest equivalent open circuit voltage belongs may be determined first, and then the capacity consumption level of the battery may be determined based on the correspondence between the equivalent open circuit voltage interval and the capacity consumption level.

[0077] In an embodiment of the present application, the equivalent open-circuit voltage of the battery can be recorded each time the battery is connected to a charging circuit or is shut down due to low battery capacity. After recording for a certain period of time (i.e., the length of a predetermined historical time period), a statistical analysis is performed on the equivalent open-circuit voltage of the battery recorded within the time period to determine the lowest equivalent open-circuit voltage recorded within the time period.

[0078] In an optional embodiment, one implementation method of adjusting the upper charging limit voltage of the battery according to the target parameter may be:

[0079] If the target parameter is the target capacity consumption level and the battery's upper charging limit voltage is the limit charging upper charging limit voltage, adjusting the battery's upper charging limit voltage is prohibited; otherwise, adjusting the battery's upper charging limit voltage according to the target parameter.

[0080] The target capacity consumption level indicates that the lowest remaining capacity of the battery in a predetermined historical time period belongs to the target remaining capacity interval, and the remaining capacity value in the target remaining capacity interval is smaller than the remaining capacity value in the non-target remaining capacity interval.

[0081] When the target parameter is the target capacity consumption level, it means that the electronic device's demand for battery capacity is close to the full charge capacity of the battery. At this time, it is necessary to adjust the battery's upper charge voltage to the limit charge upper limit voltage so that the battery's reference full charge capacity is adjusted to the maximum reference full charge capacity, thereby maximally meeting the electronic device's demand for battery capacity. Based on this,

[0082] If the target parameter is a target capacity consumption level and the upper charging limit voltage of the battery has not reached the upper limiting charging limit voltage, adjusting the upper charging limit voltage of the battery to the upper limiting charging limit voltage;

[0083] If the target parameter is the target capacity consumption level and the battery's upper charging limit voltage is the limit charging upper charging limit voltage, no operation is performed, that is, the battery's upper charging limit voltage is not adjusted.

[0084] If the target parameter is not the target capacity consumption level, the battery charging upper limit voltage is adjusted according to the target parameter so that the battery's reference full charge capacity is adjusted to a first reference full charge capacity corresponding to the remaining capacity interval to which the minimum remaining capacity belongs.

[0085] In an optional embodiment, a flowchart for adjusting the upper limit voltage of the battery charge according to the target parameters is as follows: Figure 3 As shown, this may include:

[0086] Step S301: determining a voltage adjustment step size according to a capacity consumption level.

[0087] The voltage adjustment step size is based on the battery's maximum charge voltage limit (corresponding to the maximum reference full charge capacity). The voltage adjustment step size is negatively correlated with the capacity consumption level: the lower the capacity consumption level, the longer the adjustment step size; the higher the capacity consumption level, the shorter the adjustment step size.

[0088] The voltage adjustment step size can be determined based on the pre-set correspondence between the capacity consumption level and the voltage adjustment step size. Alternatively,

[0089] The voltage adjustment step size can be determined based on a pre-set functional relationship between the capacity consumption level and the voltage adjustment step size. The functional relationship between the capacity consumption level and the voltage adjustment step size can be a linear functional relationship or a nonlinear functional relationship, which is not specifically limited in this application.

[0090] Step S302: Based on the voltage adjustment step and the battery's maximum charging upper limit voltage, adjust the battery's charging upper limit voltage from the current first charging upper limit voltage to a second charging upper limit voltage; the voltage difference between the second charging upper limit voltage and the maximum charging upper limit voltage is the voltage adjustment step.

[0091] Assuming that the voltage adjustment step is t1, the battery's maximum charging upper limit voltage is V0, the current first charging upper limit voltage is V1, and the second charging upper limit voltage is V2, then V2 = V0-t1. Based on this, when adjusting the battery's charging upper limit voltage, it is necessary to adjust the current first charging upper limit voltage up or down by a certain step (denoted as t2) so that the battery's charging upper limit voltage is adjusted to the second charging upper limit voltage. Then, t2 = |V0-t1-V1|.

[0092] If V0-t1 is less than V1, then V1 is used as the benchmark and t2 is adjusted downward to obtain V2.

[0093] If V0-t1 is greater than V1, then V1 is used as a reference and t2 is adjusted upward to obtain V2.

[0094] In order to further reduce the negative impact of fast charging on battery life, the battery control method provided in the embodiment of the present application may further include:

[0095] Gets the battery charging frequency within a predetermined historical time period.

[0096] The battery charging frequency can be determined based on the battery's cumulative charge capacity over a predetermined historical period. The cumulative charge capacity of a battery refers to the total amount of charge the battery has received during that period. For example, assuming the battery was charged five times during that period, with the capacities charged during those five charges being C1, C2, C3, C4, and C5, the cumulative charge capacity (denoted as C) for that period is: C = C1 + C2 + C3 + C4 + C5.

[0097] As an example, the charging frequency of the battery within a predetermined historical period may be determined as follows:

[0098] The ratio of the accumulated charge capacity to the battery's maximum full charge capacity is used to determine the battery's charging frequency within a predetermined historical period. The battery's maximum full charge capacity refers to the battery's baseline full charge capacity when the battery's upper charge voltage reaches the maximum charge voltage.

[0099] The full charge cut-off current of the battery is adjusted to a first full charge cut-off current according to the charging frequency; the first full charge cut-off current is positively correlated with the charging frequency.

[0100] Frequent charging of the battery will accelerate the aging and attenuation of the battery capacity. Moreover, the size of the charge cut-off current affects the capacity of the battery. The larger the charge cut-off current, the less capacity is charged into the battery, and the smaller the charge cut-off current, the more capacity is charged into the battery. Based on this,

[0101] In the embodiment of the present application, the greater the charging frequency, the greater the full charge cut-off current. That is, when the charging frequency increases, the full charge cut-off current is correspondingly increased, thereby reducing the capacity charged into the battery each time the battery is charged, thereby increasing the cycle life of the battery.

[0102] The following examples illustrate the solution of this application:

[0103] As shown in Table 1, in this example, seven capacity consumption levels are set, and correspondingly, seven remaining capacity intervals are set.

[0104] Table 1

[0105] Capacity consumption level Remaining capacity range Charging upper limit voltage Base full charge capacity 7 [0，35％) V-0v 100％C 6 [35％，40％) V-0.01v 99％C 5 [40％，45％) V-0.02v 98％C 4 [45％，50％) V-0.03v 97％C 3 [50％，55％) V-0.04v 96％C 2 [55％，65％) V-0.05v 95％C 1 [65％，90％) V-0.10v 90％C

[0106] In Table 1, V represents the battery's maximum charge voltage. For example, "V-0.01v" indicates the battery's maximum charge voltage is adjusted downward by 0.01v. C represents the battery's maximum full charge capacity.

[0107] In this example, the target capacity consumption level is 7. Based on this,

[0108] If the battery's capacity consumption level is 7 during the predetermined historical time period and the battery's current upper charge voltage limit is V, adjustment of the battery's upper charge voltage limit is prohibited, i.e., the battery's upper charge voltage limit remains unchanged. At this time, the battery's reference full charge capacity is 100% C.

[0109] If the battery's capacity consumption level is 7 during the predetermined historical time period, and the battery's current upper limit charging voltage is less than V, for example, the battery's current upper limit charging voltage is V-0.03v, then the battery's upper limit charging voltage needs to be adjusted to the upper limit charging voltage V corresponding to the capacity consumption level 7. That is, the battery's upper limit charging voltage needs to be adjusted upward by 0.03v to reach V. At this point, the battery's baseline full charge capacity is 100%C.

[0110] If the battery's capacity consumption level is less than 7 during the predetermined historical time period, for example, the battery's capacity consumption level is 2, and the battery's current upper limit charging voltage is V, then the battery's upper limit charging voltage needs to be adjusted to the upper limit charging voltage V-0.05v corresponding to the capacity consumption level 2, that is, the battery's upper limit charging voltage is lowered by 0.05v to reach V-0.05v. At this time, the battery's benchmark full charge capacity is 95%C.

[0111] If the battery's capacity consumption level is less than 7 during the predetermined historical time period, for example, the battery's capacity consumption level is 5, and the battery's current upper charge voltage limit is V-0.05v, the battery's upper charge voltage limit needs to be adjusted to the upper charge voltage V-0.02v corresponding to the capacity consumption level 5, that is, the battery's upper charge voltage limit is increased by 0.03v to reach V-0.02v. At this time, the battery's reference full charge capacity is 98% C. In other words, when the battery's capacity consumption level is 5, the battery's upper charge voltage limit should be adjusted to V-0.02v, and the current battery's upper charge voltage limit is V-0.05v (for example, the battery's upper charge voltage limit was adjusted to V-0.05v before the predetermined historical time period). Therefore, the upper charge voltage limit should be adjusted upward by 0.03v from V-0.05v to reach V-0.02v.

[0112] Corresponding to the method embodiment, the embodiment of the present application further provides a battery control device. A structural diagram of the battery control device provided in the embodiment of the present application is shown as follows: Figure 4 As shown, this may include:

[0113] Parameter acquisition module 401 and adjustment module 402; wherein,

[0114] The parameter acquisition module 401 is used to obtain the target parameter of the battery within a predetermined historical time period, where the target parameter represents the remaining capacity interval to which the lowest remaining capacity of the battery within the predetermined historical time period belongs; different remaining capacity intervals have different remaining capacity values;

[0115] The adjustment module 402 is used to adjust the charging upper limit voltage of the battery according to the target parameter so as to adjust the reference full charge capacity of the battery to a first reference full charge capacity corresponding to the remaining capacity interval to which the minimum remaining capacity belongs; the first reference full charge capacity is negatively correlated with the remaining capacity interval to which the minimum remaining capacity belongs.

[0116] The battery control device provided in the embodiment of the present application obtains the target parameter of the battery in a predetermined historical time period, and the target parameter represents the minimum remaining capacity of the battery in the predetermined historical time period; according to the target parameter, the charging upper limit voltage of the battery is adjusted to adjust the reference full charge capacity of the battery to a first reference full charge capacity; the first reference full charge capacity is negatively correlated with the minimum remaining capacity. Since the minimum remaining capacity of the battery in the predetermined historical time period reflects the battery capacity consumption trend of the electronic device to which the battery belongs, the present application adjusts the reference full charge capacity of the battery according to the actual consumption degree of the battery capacity of the electronic device, so that the reference full charge capacity of the battery is adapted to the actual consumption degree of the battery capacity of the electronic device, that is, if the electronic device consumes the battery capacity more seriously, the reference full charge capacity of the battery can be increased; if the electronic device consumes the battery capacity less, the reference full charge capacity of the battery can be lowered, thereby reducing the negative impact of fast charging on the battery life and achieving a long cycle life of the fast-chargeable battery.

[0117] In an optional embodiment, the target parameter of the battery is a capacity consumption level of the battery;

[0118] The capacity consumption level of the battery is negatively correlated with the remaining capacity interval to which the minimum remaining capacity of the battery belongs.

[0119] In an optional embodiment, the parameter acquisition module 401 is used to:

[0120] Obtaining at least the lowest remaining capacity of the battery within the predetermined historical time period;

[0121] A capacity consumption level of the battery is determined based on at least a minimum remaining capacity of the battery.

[0122] In an optional embodiment, the parameter acquisition module 401 is used to:

[0123] Obtaining the lowest remaining capacity and the lowest equivalent open circuit voltage of the battery within the predetermined historical time period;

[0124] The capacity consumption level of the battery is determined according to the minimum remaining capacity and the minimum equivalent open circuit voltage of the battery.

[0125] In an optional embodiment, the adjustment module 402 is configured to:

[0126] If the target parameter is a target capacity consumption level and the upper charging limit voltage of the battery is a limit charging upper limit voltage, prohibiting adjustment of the upper charging limit voltage of the battery; otherwise, adjusting the upper charging limit voltage of the battery according to the target parameter;

[0127] The target capacity consumption level indicates that the lowest remaining capacity of the battery within the predetermined historical time period belongs to a target remaining capacity interval, and the remaining capacity value within the target remaining capacity interval is smaller than the remaining capacity value within the non-target remaining capacity interval.

[0128] In an optional embodiment, the adjustment module 402 is configured to:

[0129] determining a voltage adjustment step size according to the capacity consumption level;

[0130] Based on the voltage adjustment step and the ultimate charging upper limit voltage of the battery, the charging upper limit voltage of the battery is adjusted from the current first charging upper limit voltage to a second charging upper limit voltage; the voltage difference between the second charging upper limit voltage and the ultimate charging upper limit voltage is the voltage adjustment step.

[0131] In an optional embodiment, the device further comprises:

[0132] A frequency acquisition module, configured to acquire the charging frequency of the battery within the predetermined historical time period;

[0133] The adjustment module is further configured to adjust the full charge cut-off current of the battery to a first full charge cut-off current according to the charging frequency; the first full charge cut-off current is positively correlated with the charging frequency.

[0134] Corresponding to the method embodiment, the present application also provides an electronic device having a fast-chargeable battery. A structural diagram of the electronic device is shown in FIG. Figure 5 As shown, it may include: at least one processor 1, at least one communication interface 2, at least one memory 3 and at least one communication bus 4.

[0135] In an embodiment of the present application, the number of processor 1 , communication interface 2 , memory 3 , and communication bus 4 is at least one, and the processor 1 , communication interface 2 , and memory 3 communicate with each other through the communication bus 4 .

[0136] The processor 1 may be a central processing unit (CPU), or an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0137] The memory 3 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), etc., such as at least one disk memory.

[0138] The memory 3 stores a program, and the processor 1 can call the program stored in the memory 3, and the program is used to:

[0139] Obtaining a target parameter of the battery within a predetermined historical time period, the target parameter representing a remaining capacity interval to which the lowest remaining capacity of the battery within the predetermined historical time period belongs; different remaining capacity intervals have different remaining capacity values;

[0140] According to the target parameter, the charging upper limit voltage of the battery is adjusted to adjust the reference full charge capacity of the battery to a first reference full charge capacity corresponding to the remaining capacity interval to which the minimum remaining capacity belongs; the first reference full charge capacity is negatively correlated with the remaining capacity interval to which the minimum remaining capacity belongs.

[0141] Optionally, the detailed functions and extended functions of the program may refer to the above description.

[0142] An embodiment of the present application further provides a storage medium, which may store a program suitable for execution by a processor, wherein the program is used to:

[0143] Obtaining a target parameter of the battery within a predetermined historical time period, the target parameter representing a remaining capacity interval to which the lowest remaining capacity of the battery within the predetermined historical time period belongs; different remaining capacity intervals have different remaining capacity values;

[0144] According to the target parameter, the charging upper limit voltage of the battery is adjusted to adjust the reference full charge capacity of the battery to a first reference full charge capacity corresponding to the remaining capacity interval to which the minimum remaining capacity belongs; the first reference full charge capacity is negatively correlated with the remaining capacity interval to which the minimum remaining capacity belongs.

[0145] Optionally, the detailed functions and extended functions of the program may refer to the above description.

[0146] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0147] In the several embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. Furthermore, the couplings or direct couplings or communication connections shown or discussed may be indirect couplings or communication connections through interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0148] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0149] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0150] It should be understood that in the embodiments of the present application, the various embodiments and features can be combined with each other to solve the aforementioned technical problems.

[0151] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0152] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A battery control method, wherein the battery is a fast-chargeable battery, the method comprising: Obtaining a target parameter of the battery within a predetermined historical time period, where the target parameter represents a remaining capacity interval to which a minimum remaining capacity of the battery within the predetermined historical time period belongs; The remaining capacity values in different remaining capacity intervals are different; adjusting, according to the target parameter, an upper charging limit voltage of the battery so as to adjust a reference full-charge capacity of the battery to a first reference full-charge capacity corresponding to the remaining capacity interval to which the minimum remaining capacity belongs; The first reference full charge capacity is negatively correlated with the remaining capacity interval to which the minimum remaining capacity belongs; Also includes: Obtaining a charging frequency of the battery within the predetermined historical time period; the charging frequency of the battery is obtained based on the cumulative charging capacity of the battery within the predetermined historical time period; According to the charging frequency, the full charge cut-off current of the battery is adjusted to a first full charge cut-off current; the first full charge cut-off current is positively correlated with the charging frequency.

2. The method according to claim 1, wherein the target parameter of the battery is a capacity consumption level of the battery; The capacity consumption level of the battery is negatively correlated with the remaining capacity interval to which the minimum remaining capacity of the battery belongs.

3. The method according to claim 2, wherein obtaining the target parameters of the battery within a predetermined historical time period comprises: Obtaining at least the lowest remaining capacity of the battery within the predetermined historical time period; A capacity consumption level of the battery is determined based on at least a minimum remaining capacity of the battery.

4. The method according to claim 3, wherein the step of obtaining at least the lowest remaining capacity of the battery within the predetermined historical time period comprises: Obtaining the lowest remaining capacity and the lowest equivalent open circuit voltage of the battery within the predetermined historical time period; The determining the capacity consumption level of the battery at least according to the minimum remaining capacity of the battery includes: The capacity consumption level of the battery is determined according to the minimum remaining capacity and the minimum equivalent open circuit voltage of the battery.

5. The method according to claim 2, wherein adjusting the upper charging limit voltage of the battery according to the target parameter comprises: If the target parameter is a target capacity consumption level and the upper charging limit voltage of the battery is a limit charging upper limit voltage, prohibiting adjustment of the upper charging limit voltage of the battery; otherwise, adjusting the upper charging limit voltage of the battery according to the target parameter; The target capacity consumption level indicates that the lowest remaining capacity of the battery within the predetermined historical time period belongs to a target remaining capacity interval, and the remaining capacity value within the target remaining capacity interval is smaller than the remaining capacity value within the non-target remaining capacity interval.

6. The method according to any one of claims 2 to 5, wherein adjusting the upper charging limit voltage of the battery according to the target parameter comprises: determining a voltage adjustment step size according to the capacity consumption level; Based on the voltage adjustment step size and the ultimate charging upper limit voltage of the battery, adjusting the charging upper limit voltage of the battery from the current first charging upper limit voltage to a second charging upper limit voltage; A voltage difference between the second charging upper limit voltage and the ultimate charging upper limit voltage is the voltage adjustment step.

7. A battery control device, wherein the battery is a fast-chargeable battery, the device comprising: a parameter acquisition module, configured to acquire a target parameter of the battery within a predetermined historical time period, wherein the target parameter represents a remaining capacity interval to which the lowest remaining capacity of the battery within the predetermined historical time period belongs; The remaining capacity values in different remaining capacity intervals are different; an adjusting module, configured to adjust the charging upper limit voltage of the battery according to the target parameter, so as to adjust the reference full charge capacity of the battery to a first reference full charge capacity corresponding to the remaining capacity interval to which the minimum remaining capacity belongs; The first reference full charge capacity is negatively correlated with the remaining capacity interval to which the minimum remaining capacity belongs; A frequency acquisition module, configured to acquire the charging frequency of the battery within the predetermined historical time period; the charging frequency of the battery is obtained based on the cumulative charging capacity of the battery within the predetermined historical time period; The adjustment module is further configured to adjust the full charge cut-off current of the battery to a first full charge cut-off current according to the charging frequency; the first full charge cut-off current is positively correlated with the charging frequency.

8. An electronic device comprising: Memory, used to store programs; A processor is configured to call and execute the program in the memory, and implement the various steps of the battery control method according to any one of claims 1 to 6 by executing the program.

9. A readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the computer program implements the steps of the battery control method according to any one of claims 1 to 6.

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