CN114123417A - Battery control method, device, electronic equipment and storage medium - Google Patents
Battery control method, device, electronic equipment and storage medium Download PDFInfo
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- CN114123417A CN114123417A CN202111441455.3A CN202111441455A CN114123417A CN 114123417 A CN114123417 A CN 114123417A CN 202111441455 A CN202111441455 A CN 202111441455A CN 114123417 A CN114123417 A CN 114123417A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
Abstract
The embodiment of the application discloses a battery control method, a device, electronic equipment and a storage medium, and aims to obtain a target parameter of a battery in a preset historical time period, wherein the target parameter represents the lowest residual capacity of the battery in the preset historical time period; adjusting 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; the first baseline full charge capacity is inversely related to the lowest remaining capacity. The negative influence of quick charging on the service life of the battery is reduced, and the long cycle service life of the quick-charging rechargeable battery is realized.
Description
Technical Field
The present disclosure relates to the field of electronic technologies, and in particular, to a battery control method and apparatus, an electronic device, and a storage medium.
Background
Some electronic devices using rechargeable batteries currently use fast charging techniques to charge the batteries, but fast charging reduces the cycle life of the batteries.
Therefore, how to increase the cycle life of the battery under the fast charging technology becomes an urgent technical problem to be solved.
Disclosure of Invention
The application aims to provide a battery control method, a battery control device, electronic equipment and a storage medium, and the method comprises the following technical scheme:
a battery control method, the battery being a fast-chargeable battery, the method comprising:
acquiring a target parameter of the battery in a preset historical time period, wherein the target parameter represents a residual capacity interval to which the lowest residual capacity of the battery belongs in the preset historical time period; the residual capacity values in different residual capacity intervals are different;
according to the target parameter, adjusting the charging upper limit voltage of the battery to adjust the reference full charge capacity of the battery to a first reference full charge capacity corresponding to the residual capacity interval to which the lowest residual capacity belongs; the first reference full charge capacity is inversely related to a remaining capacity interval to which the lowest remaining capacity belongs.
In the above method, preferably, the target parameter of the battery is a capacity consumption level of the battery;
the capacity consumption level of the battery is inversely related to a remaining capacity section to which the lowest remaining capacity of the battery belongs.
Preferably, the acquiring the target parameter of the battery within the predetermined historical time period includes:
acquiring at least the lowest remaining capacity of the battery within the predetermined historical time period;
determining a capacity consumption level of the battery based at least on the lowest remaining capacity of the battery.
The above method, preferably, the obtaining at least the lowest remaining capacity of the battery in the predetermined historical period includes:
acquiring the lowest residual capacity and the lowest equivalent open-circuit voltage of the battery in the preset historical time period;
the determining a capacity consumption level of the battery based at least on the lowest remaining capacity of the battery comprises:
and determining the capacity consumption level of the battery according to the lowest residual capacity and the lowest equivalent open-circuit voltage of the battery.
In the above method, preferably, the adjusting the charging upper limit voltage of the battery according to the target parameter includes:
if the target parameter is the target capacity consumption level and the upper charging limit voltage of the battery is the limit upper charging limit voltage, forbidding to adjust the upper charging limit voltage of the battery, otherwise, adjusting the upper charging limit voltage of the battery according to the target parameter;
and the target capacity consumption level represents that the lowest residual capacity of the battery in the preset historical time period belongs to a target residual capacity interval, and the residual capacity value in the target residual capacity interval is smaller than the residual capacity value in a non-target residual capacity interval.
In the above method, preferably, the adjusting the charging upper limit voltage of the battery according to the target parameter includes:
determining a voltage adjustment step length according to the capacity consumption grade;
adjusting the charging upper limit voltage of the battery from a current first charging upper limit voltage to a second charging upper limit voltage based on the voltage adjustment step length and the limit charging upper limit voltage of the battery; and the voltage difference between the second charging upper limit voltage and the limit charging upper limit voltage is the voltage adjustment step length.
The above method, preferably, further comprises:
acquiring the charging frequency of the battery in the preset historical time period;
adjusting the full-charge cutoff current of the battery to be a first full-charge cutoff current according to the charging frequency; the first full charge cutoff current is positively correlated with the charging frequency.
A battery control apparatus, the battery being a fast-chargeable and rechargeable battery, the apparatus comprising:
the parameter acquisition module is used for acquiring a target parameter of the battery in a preset historical time period, wherein the target parameter represents a residual capacity interval to which the lowest residual capacity of the battery belongs in the preset historical time period; the residual capacity values in different residual capacity intervals are different;
the adjusting module is used for adjusting 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 be a first reference full charge capacity corresponding to the residual capacity interval to which the lowest residual capacity belongs; the first reference full charge capacity is inversely related to a remaining capacity interval to which the lowest remaining capacity belongs.
An electronic device, comprising:
a memory for storing a program;
and the processor is used for calling and executing the program in the memory, and realizing the steps of the battery control method according to any one of the above items by executing the program.
A readable storage medium having stored thereon a computer program which, when executed by a processor, carries out the steps of the battery control method as claimed in any one of the preceding claims.
According to the scheme, the target parameter of the battery (the rapidly chargeable and rechargeable battery) in the preset historical time period is obtained, and the target parameter represents the lowest residual capacity of the battery in the preset historical time period; adjusting 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; the first baseline full charge capacity is inversely related to the lowest remaining capacity. The lowest residual capacity of the battery in the preset historical time period reflects the battery capacity consumption trend of the electronic equipment to which the battery belongs, so that the reference full charge capacity of the battery is adjusted according to the actual consumption degree of the electronic equipment to the battery capacity, the reference full charge capacity of the battery is adaptive to the actual consumption degree of the electronic equipment to the battery capacity, namely the reference full charge capacity of the battery can be increased due to the fact that the electronic equipment consumes the battery capacity seriously, and if the electronic equipment consumes the battery capacity lightly, the reference full charge capacity of the battery can be decreased, so that the negative influence of quick charge on the service life of the battery is reduced, and the long cycle service life of the rechargeable battery can be charged quickly.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a flowchart of an implementation of a battery control method according to an embodiment of the present disclosure;
FIG. 2 is a flow chart of one implementation of obtaining target parameters of a battery over a predetermined historical period of time according to an embodiment of the present disclosure;
FIG. 3 is a flowchart of an implementation of adjusting the upper charging limit voltage of the battery according to the target parameter according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a battery control apparatus according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in other sequences than described or illustrated herein.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without inventive step, are within the scope of the present disclosure.
The battery control method provided by the embodiment of the application can be applied to electronic equipment which can be powered by at least a quick-charging battery, such as a mobile phone, a tablet computer, a notebook computer and the like. Optionally, the electronic device may be powered by a rechargeable battery or an external power source (e.g., commercial power).
Although a fast rechargeable battery can be fully charged in a short time, the cycle life of the current fast rechargeable battery is generally short.
The following describes the scheme of the present application. The Battery Management method provided by the embodiment of the application can be realized by a Battery Management System (BMS).
As shown in fig. 1, a flowchart for implementing a battery control method provided in an embodiment of the present application may include:
step S101: acquiring a target parameter of the battery in a preset historical time period, wherein the target parameter represents a residual capacity interval to which the lowest residual capacity of the battery in the preset historical time period belongs (for convenience of distinguishing, the residual capacity interval is marked as a first residual capacity interval); the remaining capacity values in different remaining capacity intervals are different.
The predetermined historical period of time refers to a period of time closest to the current time, such as the last week, the last 3 days, the last 10 days, and so on.
Optionally, the battery control method provided in the embodiments of the present application may be periodically executed. The execution cycle may be equal to the length of the predetermined history time period, or the execution cycle may be greater than the length of the predetermined history time period.
In the present application, a plurality of remaining capacity sections are preset, and the lengths of the remaining capacity sections may all be the same, or the lengths of the remaining capacity sections may be partially the same and partially different, or the lengths of the remaining capacity sections may all be different.
When the lengths of the remaining capacity sections are partially the same and partially different, the length of each remaining capacity section in the remaining capacity sections with the same length is smaller than the length of each remaining capacity section with the different length, and the value of the remaining capacity in each remaining capacity section in the remaining capacity sections with the same length is smaller than the value of the remaining capacity in each remaining capacity section with the different length.
When the lengths of the respective remaining capacity sections are all different, the smaller the remaining capacity value in the remaining capacity section is, the shorter the length of the remaining capacity section is, and conversely, the larger the remaining capacity value in the remaining capacity section is, the longer the length of the remaining capacity section is.
Optionally, the number of the remaining capacity intervals, the length of the remaining capacity intervals, and the maximum value and the minimum value of the remaining capacity values in all the remaining capacity intervals may be determined empirically by a technician/expert, or may be obtained through big data analysis, or may be obtained by combining the experience of the technician/expert and the big data analysis.
The big data related to the present application includes battery usage data recorded by electronic devices that use a large number of rechargeable batteries (which may include fast rechargeable batteries and/or non-fast rechargeable batteries), each electronic device records a plurality of pieces of data correspondingly, and each piece of data records the remaining capacity of the rechargeable battery when the rechargeable battery in the electronic device is accessed to a charging circuit (i.e., starts charging) each time or the electronic device is shut down due to the fact that the remaining capacity of the rechargeable battery is too low.
As an example, by analyzing the above-described big data, a maximum value of the remaining capacity of the electronic device using the rechargeable battery may be determined, and then the remaining capacity within a range smaller than the maximum value of the remaining capacity may be divided into the above-described plurality of remaining capacity sections by a technician/specialist according to experience. Alternatively, the first and second electrodes may be,
after determining the maximum value of the residual capacity, automatically dividing the residual capacity in the range smaller than the maximum value of the residual capacity into a plurality of residual capacity sections according to the setting rules of the number and the length of the residual capacity sections. As an example, the number and length of remaining capacity intervals may be set by a technician/expert as configurable parameters.
Step S102: adjusting 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 first remaining capacity interval; the first reference full charge capacity is inversely related to the first remaining capacity interval.
Wherein, the negative correlation between the first reference full charge capacity and the first residual capacity interval means that: the smaller the remaining capacity value in the first remaining capacity interval is, the larger the first reference full charge capacity is; the larger the remaining capacity value in the first remaining capacity interval is, the smaller the first reference full charge capacity is.
The smaller the residual capacity value in the first residual capacity interval is, the larger the demand of the electronic equipment for the battery capacity is, and the reference full charge capacity of the battery can be improved so as to provide the capacity required by the electronic equipment; the larger the remaining capacity value in the first remaining capacity interval is, the smaller the required amount of the electronic equipment for the capacity of the battery is, and the reference full charge capacity of the battery can be reduced, so that the negative influence of quick charge on the battery can be reduced while the requirement of the electronic equipment for the capacity is not influenced.
The reference full charge capacity of the battery is determined by the upper charge limit voltage and the lower discharge limit voltage of the battery, and in the embodiment of the application, the lower discharge limit voltage of the battery is kept unchanged, and only the upper charge limit voltage is adjusted.
The higher the charge upper limit voltage of the battery is, the larger the reference full charge capacity of the battery is, and the lower the charge upper limit voltage of the battery is, the smaller the reference full charge capacity of the battery is. That is, the higher the charge upper limit voltage of the battery, the more the capacity that can be charged into the battery, and the lower the charge upper limit voltage of the battery, the less the capacity that can be charged into the battery, so that it is possible to change how much the capacity that is charged into the battery by adjusting the charge upper limit voltage of the battery. Based on this, the basic full charge capacity of the battery can be increased by increasing the upper charge limit voltage of the battery so as to provide the capacity required by the electronic device, or the negative effect of quick charge on the battery can be reduced without affecting the capacity requirement of the electronic device by decreasing the upper charge limit voltage of the battery so as to reduce the basic full charge capacity of the battery.
According to the battery control method provided by the embodiment of the application, the target parameter of the battery in the preset historical time period is obtained, and the target parameter represents the lowest residual capacity of the battery in the preset historical time period; adjusting 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; the first baseline full charge capacity is inversely related to the lowest remaining capacity. The lowest residual capacity of the battery in the preset historical time period reflects the battery capacity consumption trend of the electronic equipment to which the battery belongs, so that the reference full charge capacity of the battery is adjusted according to the actual consumption degree of the electronic equipment to the battery capacity, the reference full charge capacity of the battery is adaptive to the actual consumption degree of the electronic equipment to the battery capacity, namely the reference full charge capacity of the battery can be increased due to the fact that the electronic equipment consumes the battery capacity seriously, and if the electronic equipment consumes the battery capacity lightly, the reference full charge capacity of the battery can be decreased, so that the negative influence of quick charge on the service life of the battery is reduced, and the long cycle service life of the rechargeable battery can be charged quickly.
In an alternative embodiment, the target parameter of the battery may be a capacity consumption level of the battery, where the capacity consumption level is inversely related to a remaining capacity interval (i.e., the first remaining capacity interval) to which the lowest remaining capacity of the battery easily belongs.
The negative correlation between the capacity consumption level of the battery and the first remaining capacity interval means that: the smaller the residual capacity value in the first residual capacity interval is, the higher the capacity consumption level of the battery is, and the heavier the use degree of the battery capacity represented by the electronic equipment is; the smaller the remaining capacity value in the first remaining capacity interval is, the lower the capacity consumption level of the battery is, and the lighter the usage degree of the battery capacity represented by the electronic device is.
That is, the present application classifies the consumption state of the battery capacity by the electronic device into different consumption levels, adjusts the upper limit charging voltage of the battery based on the capacity consumption level of the battery, and further adjusts the reference full charge capacity of the battery. Based on this, the higher the capacity consumption level of the battery, the higher the reference full charge capacity of the battery, and conversely, the lower the capacity consumption level of the battery, the lower the reference full charge capacity of the battery.
The battery capacity consumption level represents the required amount of the battery capacity of the electronic equipment, the lower the battery capacity consumption level is, the less the required amount of the battery capacity represented by the electronic equipment is, and the higher the battery capacity consumption level is, the more the required amount of the battery capacity represented by the electronic equipment is.
In an alternative embodiment, an implementation flowchart of the above obtaining the target parameter of the battery in the predetermined historical time period is shown in fig. 2, and may include:
step S201: at least the lowest remaining capacity of the battery for a predetermined historical period of time is obtained.
In the present application, only the lowest remaining capacity of the battery in the predetermined history period may be acquired, or other information, such as the lowest equivalent open circuit voltage of the battery, may be acquired in addition to the lowest remaining capacity of the battery in the predetermined history period.
In the embodiment of the present application, the remaining capacity of the battery may be recorded each time the battery is connected to the charging circuit or is shut down due to too low remaining capacity of the battery, and after a certain period of time (i.e., the length of the predetermined historical time period) is recorded, statistical analysis may be performed on the remaining capacity of the battery recorded in the time period to determine the lowest value of the remaining capacity recorded in the time period (i.e., the lowest remaining capacity).
Similarly, the remaining capacity and the equivalent open-circuit voltage of the battery may be recorded each time the battery is connected to the charging circuit or is shut down due to the fact that the remaining capacity of the battery is too low, and after a certain period of time (i.e., the length of the predetermined historical time period) is recorded, statistical analysis is performed on the remaining capacity and the equivalent open-circuit voltage of the battery recorded in the time period to determine the lowest value (i.e., the lowest remaining capacity) and the lowest equivalent open-circuit voltage of the remaining capacity recorded in the time period.
Step S202: the capacity consumption level of the battery is determined based on at least the lowest remaining capacity of the battery.
In the case where only the lowest remaining capacity of the battery within the predetermined history period is acquired, the remaining capacity section 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 relationship between the remaining capacity section and the capacity consumption level.
In the case of acquiring the lowest remaining capacity and the lowest equivalent open circuit voltage of the battery within the predetermined history time period, the correspondence relationship between the remaining capacity section and the capacity consumption level (denoted as a first correspondence relationship) and the correspondence relationship between the equivalent open circuit voltage section and the capacity consumption level (denoted as a second correspondence relationship) may be set in advance to determine the capacity consumption level of the battery.
As an example, the first corresponding relationship and the second corresponding relationship may be simultaneously activated to respectively determine one capacity consumption level, and as long as one of the corresponding relationships is used to determine the capacity consumption level, the charging upper limit voltage of the battery is adjusted according to the capacity consumption level, and it is not waited for whether the other corresponding relationship determines the capacity consumption level, so that the capacity consumption level can be quickly determined, and the determination speed of the capacity consumption level is increased.
For example, one of the first corresponding relationship and the second corresponding relationship may be preferentially used to determine the capacity consumption level, and only when the capacity consumption level cannot be determined by using the corresponding relationship, the capacity consumption level may be determined by using the other corresponding relationship, so that the continuous effectiveness of the battery control method may be ensured.
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 section 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 according to the corresponding relationship between the equivalent open-circuit voltage section and the capacity consumption level.
In the embodiment of the application, the equivalent open-circuit voltage of the battery can be recorded when the battery is connected to the charging circuit or is shut down due to too low battery capacity, and after a certain time length (namely the length of a preset historical time period) is recorded, the recorded equivalent open-circuit voltage of the battery in the time period is subjected to statistical analysis to determine the lowest equivalent open-circuit voltage recorded in the time period.
In an optional embodiment, one implementation manner of adjusting the charging upper limit voltage of the battery according to the target parameter may be:
and if the target parameter is the target capacity consumption level and the upper charging limit voltage of the battery is the limit upper charging limit voltage, forbidding to adjust 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 represents that the lowest residual capacity of the battery in the preset historical time period belongs to a target residual capacity interval, and the residual capacity value in the target residual capacity interval is smaller than the residual capacity value in the non-target residual capacity interval.
When the target parameter is the target capacity consumption level, the requirement of the electronic equipment on the battery capacity is close to the full charge capacity of the battery capacity, and at the moment, the charging upper limit voltage of the battery needs to be adjusted to the limit charging upper limit voltage, so that the reference full charge capacity of the battery is adjusted to the maximum reference full charge capacity, and the requirement of the electronic equipment on the battery capacity is met to the maximum extent. On the basis of this, the method is suitable for the production,
if the target parameter is the target capacity consumption level and the upper charging limit voltage of the battery does not reach the upper limit charging voltage, adjusting the upper limit charging voltage of the battery to the upper limit charging limit voltage;
if the target parameter is the target capacity consumption level and the upper charge limit voltage of the battery is the limit upper charge limit voltage, no operation is performed, i.e., no adjustment is made to the upper charge limit voltage of the battery.
If the target parameter is not the target capacity consumption level, the charging upper limit voltage of the battery is adjusted according to the target parameter so that the reference full charge capacity of the battery is adjusted to a first reference full charge capacity corresponding to a residual capacity section to which the lowest residual capacity belongs.
In an alternative embodiment, a flowchart of an implementation of adjusting the charging upper limit voltage of the battery according to the target parameter is shown in fig. 3, and may include:
step S301: and determining the voltage adjustment step according to the capacity consumption level.
The voltage adjustment step is a step based on a limit charging upper limit voltage (corresponding to a reference full charge capacity maximum) of the battery. The voltage adjustment step length is inversely related to the capacity consumption grade, namely the lower the capacity consumption grade is, the longer the adjustment step length is; the higher the capacity consumption level, the shorter the adjustment step.
The voltage adjustment step may be determined according to a preset correspondence between the capacity consumption level and the voltage adjustment step. Alternatively, the first and second electrodes may be,
the voltage adjustment step may be determined according to a predetermined functional relationship between the capacity consumption level and the voltage adjustment step. The functional relationship between the capacity consumption level and the voltage adjustment step may be a linear functional relationship, or may be a nonlinear functional relationship, and the present application is not limited specifically.
Step S302: adjusting the charging upper limit voltage of the battery from the current first charging upper limit voltage to a second charging upper limit voltage based on the voltage adjustment step length and the limit charging upper limit voltage of the battery; the voltage difference between the second charging upper limit voltage and the limit charging upper limit voltage is the voltage adjustment step length.
If the voltage adjustment step is t1, the limit upper charge limit voltage of the battery is V0, the current first upper charge limit voltage is V1, and the second upper charge limit voltage is V2, then V2 is V0-t1, and based on this, when adjusting the upper charge limit voltage of the battery, a certain step (denoted as t2) needs to be adjusted upward or downward on the basis of the current first upper charge limit voltage, so that the upper charge limit voltage of the battery is adjusted to the second upper charge limit voltage, then t2 is | V0-t1-V1 |.
If V0-t1 is smaller than V1, then based on V1, adjusting t2 downwards to obtain V2;
if V0-t1 is greater than V1, then, based on V1, adjusting t2 upward yields V2.
In order to further reduce the negative impact of the rapid charging on the battery life, the battery control method provided in the embodiment of the present application may further include:
the charging frequency of the battery in a predetermined historical period of time is obtained.
The charging frequency of the battery may be based on a cumulative charge capacity of the battery over a predetermined historical period of time. The accumulated charging capacity of the battery refers to how much capacity the battery has been charged together during a predetermined historical period of time. As an example, assume that the battery is charged a total of 5 times in a predetermined historical period of time, and the charged capacity of the 5 charges is as follows: c1, C2, C3, C4, C5, the accumulated charge capacity (denoted as C) of the battery in the predetermined historical time period is: C-C1 + C2+ C3+ C4+ C5.
As an example, the charging frequency of the battery for the predetermined historical period of time may be determined by:
the ratio of the cumulative charge capacity to the limit full charge capacity of the battery is determined as the frequency of charging the battery over a predetermined historical period of time. The ultimate full charge capacity of the battery is: when the upper limit charging voltage of the battery is the limit upper limit charging voltage, the reference full charge capacity of the battery is obtained.
Adjusting the full-charge cutoff current of the battery to be a first full-charge cutoff current according to the charging frequency; the first full-charge cutoff current is positively correlated with the charging frequency.
The aging and attenuation of the battery capacity can be accelerated by frequently charging the battery; further, the magnitude of the charge cutoff current affects the amount of the capacity charged into the battery, and the larger the charge cutoff current is, the smaller the capacity charged into the battery is, and the smaller the charge cutoff current is, the larger the capacity charged into the battery is. On the basis of this, the method is suitable for the production,
in the embodiment of the application, the larger the charging frequency is, the larger the full charge cutoff current is, that is, when the charging frequency is increased, the full charge cutoff current is correspondingly increased, and further, the capacity of charging the battery is reduced every time the battery is charged, so that the cycle life of the battery is prolonged.
The following examples illustrate the scheme of the present application:
as shown in table 1, in the present example, 7 capacity consumption levels are set, and accordingly, 7 remaining capacity sections are set.
TABLE 1
| Capacity consumption rating | Remaining capacity interval | Upper limit voltage of charge | Reference 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 |
In table 1, V represents the limit upper charge limit voltage of the battery. Taking "V-0.01V" as an example, the "V-0.01V" represents that the upper limit voltage of the battery is: on the basis of the limit charging upper limit voltage, 0.01v is adjusted downward. C represents the limit full charge capacity of the battery.
In this example, the target capacity consumption level is 7, based on which,
and if the capacity consumption level of the battery in the preset historical time period is 7 and the current charging upper limit voltage of the battery is V, forbidding to adjust the charging upper limit voltage of the battery, namely keeping the charging upper limit voltage of the battery unchanged, wherein the reference full charging capacity of the battery is 100 percent C.
If the capacity consumption level of the battery in the predetermined historical time period is 7 and the current charging upper limit voltage of the battery is less than V, for example, the current charging upper limit voltage of the battery is V-0.03V, the charging upper limit voltage of the battery needs to be adjusted to the charging upper limit voltage V corresponding to the capacity consumption level 7, that is, the charging upper limit voltage of the battery is adjusted upward by 0.03V to reach V, and at this time, the reference full charge capacity of the battery is 100% C.
If the capacity consumption level of the battery in the preset historical time period is less than 7, for example, the capacity consumption level of the battery is 2, and the current charging upper limit voltage of the battery is V, the charging upper limit voltage of the battery needs to be adjusted to be V-0.05V corresponding to the capacity consumption level 2, that is, the charging upper limit voltage of the battery is adjusted down by 0.05V to reach V-0.05V, and at this time, the reference full charge capacity of the battery is 95% C.
If the capacity consumption level of the battery in the preset historical time period is less than 7, for example, the capacity consumption level of the battery is 5, and the current charging upper limit voltage of the battery is V-0.05V, the charging upper limit voltage of the battery needs to be adjusted to the charging upper limit voltage V-0.02V corresponding to the capacity consumption level 5, that is, the charging upper limit voltage of the battery is adjusted by 0.03V to reach V-0.02V, and at this time, the reference full charging capacity of the battery is 98% C. That is, when the capacity consumption level of the battery is 5, the upper charge limit voltage of the battery should be adjusted to V-0.02V, and the upper charge limit voltage of the current battery is V-0.05V (e.g., the upper charge limit voltage of the battery is adjusted to V-0.05V before a predetermined historical period), so 0.03V should be adjusted upward on the basis of V-0.05V to reach V-0.02V.
Corresponding to the method embodiment, an embodiment of the present application further provides a battery control apparatus, and a schematic structural diagram of the battery control apparatus provided in the embodiment of the present application is shown in fig. 4, and the battery control apparatus may include:
a parameter acquisition module 401 and an adjustment module 402; wherein the content of the first and second substances,
the parameter obtaining module 401 is configured to obtain a target parameter of the battery in a predetermined historical time period, where the target parameter represents a remaining capacity interval to which a lowest remaining capacity of the battery belongs in the predetermined historical time period; the residual capacity values in different residual capacity intervals are different;
the adjusting module 402 is configured to adjust, according to the target parameter, a charging upper 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 a remaining capacity interval to which the lowest remaining capacity belongs; the first reference full charge capacity is inversely related to a remaining capacity interval to which the lowest remaining capacity belongs.
The battery control device provided by the embodiment of the application acquires a target parameter of the battery in a preset historical time period, wherein the target parameter represents the lowest residual capacity of the battery in the preset historical time period; adjusting 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; the first baseline full charge capacity is inversely related to the lowest remaining capacity. The lowest residual capacity of the battery in the preset historical time period reflects the battery capacity consumption trend of the electronic equipment to which the battery belongs, so that the reference full charge capacity of the battery is adjusted according to the actual consumption degree of the electronic equipment to the battery capacity, the reference full charge capacity of the battery is adaptive to the actual consumption degree of the electronic equipment to the battery capacity, namely the reference full charge capacity of the battery can be increased due to the fact that the electronic equipment consumes the battery capacity seriously, and if the electronic equipment consumes the battery capacity lightly, the reference full charge capacity of the battery can be decreased, so that the negative influence of quick charge on the service life of the battery is reduced, and the long cycle service life of the rechargeable battery can be charged quickly.
In an alternative embodiment, the target parameter of the battery is a capacity consumption level of the battery;
the capacity consumption level of the battery is inversely related to a remaining capacity section to which the lowest remaining capacity of the battery belongs.
In an optional embodiment, the parameter obtaining module 401 is configured to:
acquiring at least the lowest remaining capacity of the battery within the predetermined historical time period;
determining a capacity consumption level of the battery based at least on the lowest remaining capacity of the battery.
In an optional embodiment, the parameter obtaining module 401 is configured to:
acquiring the lowest residual capacity and the lowest equivalent open-circuit voltage of the battery in the preset historical time period;
and determining the capacity consumption level of the battery according to the lowest residual capacity and the lowest equivalent open-circuit voltage of the battery.
In an alternative embodiment, the adjusting module 402 is configured to:
if the target parameter is the target capacity consumption level and the upper charging limit voltage of the battery is the limit upper charging limit voltage, forbidding to adjust the upper charging limit voltage of the battery, otherwise, adjusting the upper charging limit voltage of the battery according to the target parameter;
and the target capacity consumption level represents that the lowest residual capacity of the battery in the preset historical time period belongs to a target residual capacity interval, and the residual capacity value in the target residual capacity interval is smaller than the residual capacity value in a non-target residual capacity interval.
In an alternative embodiment, the adjusting module 402 is configured to:
determining a voltage adjustment step length according to the capacity consumption grade;
adjusting the charging upper limit voltage of the battery from a current first charging upper limit voltage to a second charging upper limit voltage based on the voltage adjustment step length and the limit charging upper limit voltage of the battery; and the voltage difference between the second charging upper limit voltage and the limit charging upper limit voltage is the voltage adjustment step length.
In an optional embodiment, the apparatus further comprises:
the frequency acquisition module is used for acquiring the charging frequency of the battery in the preset historical time period;
the adjustment module is further configured to: adjusting the full-charge cutoff current of the battery to be a first full-charge cutoff current according to the charging frequency; the first full charge cutoff current is positively correlated with the charging frequency.
Corresponding to the embodiment of the method, the present application further provides an electronic device, where the electronic device has a fast rechargeable battery, and a schematic structural diagram of the electronic device is shown in fig. 5, where the electronic device 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.
In the embodiment of the present application, the number of the processor 1, the communication interface 2, the memory 3, and the communication bus 4 is at least one, and the processor 1, the communication interface 2, and the memory 3 complete mutual communication through the communication bus 4.
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 embodiments of the present application, etc.
The memory 3 may comprise a high-speed RAM memory, and may further comprise a non-volatile memory (non-volatile memory) or the like, such as at least one disk memory.
Wherein the memory 3 stores a program, and the processor 1 may call the program stored in the memory 3, the program being configured to:
acquiring a target parameter of the battery in a preset historical time period, wherein the target parameter represents a residual capacity interval to which the lowest residual capacity of the battery belongs in the preset historical time period; the residual capacity values in different residual capacity intervals are different;
according to the target parameter, adjusting the charging upper limit voltage of the battery to adjust the reference full charge capacity of the battery to a first reference full charge capacity corresponding to the residual capacity interval to which the lowest residual capacity belongs; the first reference full charge capacity is inversely related to a remaining capacity interval to which the lowest remaining capacity belongs.
Alternatively, the detailed function and the extended function of the program may be as described above.
Embodiments of the present application further provide a storage medium, where a program suitable for execution by a processor may be stored, where the program is configured to:
acquiring a target parameter of the battery in a preset historical time period, wherein the target parameter represents a residual capacity interval to which the lowest residual capacity of the battery belongs in the preset historical time period; the residual capacity values in different residual capacity intervals are different;
according to the target parameter, adjusting the charging upper limit voltage of the battery to adjust the reference full charge capacity of the battery to a first reference full charge capacity corresponding to the residual capacity interval to which the lowest residual capacity belongs; the first reference full charge capacity is inversely related to a remaining capacity interval to which the lowest remaining capacity belongs.
Alternatively, the detailed function and the extended function of the program may be as described above.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
It should be understood that the technical problems can be solved by combining and combining the features of the embodiments from the claims.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A battery control method, the battery being a fast-chargeable battery, the method comprising:
acquiring a target parameter of the battery in a preset historical time period, wherein the target parameter represents a residual capacity interval to which the lowest residual capacity of the battery belongs in the preset historical time period; the residual capacity values in different residual capacity intervals are different;
according to the target parameter, adjusting the charging upper limit voltage of the battery to adjust the reference full charge capacity of the battery to a first reference full charge capacity corresponding to the residual capacity interval to which the lowest residual capacity belongs; the first reference full charge capacity is inversely related to a remaining capacity interval to which the lowest remaining capacity belongs.
2. The method of claim 1, the target parameter of the battery being a capacity consumption level of the battery;
the capacity consumption level of the battery is inversely related to a remaining capacity section to which the lowest remaining capacity of the battery belongs.
3. The method of claim 2, the obtaining a target parameter of the battery over a predetermined historical period of time, comprising:
acquiring at least the lowest remaining capacity of the battery within the predetermined historical time period;
determining a capacity consumption level of the battery based at least on the lowest remaining capacity of the battery.
4. The method of claim 3, said obtaining at least a lowest remaining capacity of the battery over the predetermined historical period of time, comprising:
acquiring the lowest residual capacity and the lowest equivalent open-circuit voltage of the battery in the preset historical time period;
the determining a capacity consumption level of the battery based at least on the lowest remaining capacity of the battery comprises:
and determining the capacity consumption level of the battery according to the lowest residual capacity and the lowest equivalent open-circuit voltage of the battery.
5. The method of claim 2, the adjusting the upper charge limit voltage of the battery according to the target parameter, comprising:
if the target parameter is the target capacity consumption level and the upper charging limit voltage of the battery is the limit upper charging limit voltage, forbidding to adjust the upper charging limit voltage of the battery, otherwise, adjusting the upper charging limit voltage of the battery according to the target parameter;
and the target capacity consumption level represents that the lowest residual capacity of the battery in the preset historical time period belongs to a target residual capacity interval, and the residual capacity value in the target residual capacity interval is smaller than the residual capacity value in a non-target residual capacity interval.
6. The method of any of claims 2-5, wherein said adjusting the upper charge limit voltage of the battery according to the target parameter comprises:
determining a voltage adjustment step length according to the capacity consumption grade;
adjusting the charging upper limit voltage of the battery from a current first charging upper limit voltage to a second charging upper limit voltage based on the voltage adjustment step length and the limit charging upper limit voltage of the battery; and the voltage difference between the second charging upper limit voltage and the limit charging upper limit voltage is the voltage adjustment step length.
7. The method of claim 1, further comprising:
acquiring the charging frequency of the battery in the preset historical time period;
adjusting the full-charge cutoff current of the battery to be a first full-charge cutoff current according to the charging frequency; the first full charge cutoff current is positively correlated with the charging frequency.
8. A battery control apparatus, the battery being a fast-chargeable and rechargeable battery, the apparatus comprising:
the parameter acquisition module is used for acquiring a target parameter of the battery in a preset historical time period, wherein the target parameter represents a residual capacity interval to which the lowest residual capacity of the battery belongs in the preset historical time period; the residual capacity values in different residual capacity intervals are different;
the adjusting module is used for adjusting 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 be a first reference full charge capacity corresponding to the residual capacity interval to which the lowest residual capacity belongs; the first reference full charge capacity is inversely related to a remaining capacity interval to which the lowest remaining capacity belongs.
9. An electronic device, comprising:
a memory for storing a program;
a processor for calling and executing the program in the memory, the steps of the battery control method according to any one of claims 1 to 7 being implemented by executing the program.
10. A readable storage medium having stored thereon a computer program which, when executed by a processor, carries out the steps of the battery control method according to any one of claims 1 to 7.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117002325A (en) * | 2023-10-08 | 2023-11-07 | 浙江华宇钠电新能源科技有限公司 | Method for prolonging service life of sodium ion battery and electric vehicle applying method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117002325A (en) * | 2023-10-08 | 2023-11-07 | 浙江华宇钠电新能源科技有限公司 | Method for prolonging service life of sodium ion battery and electric vehicle applying method |
| CN117002325B (en) * | 2023-10-08 | 2024-01-23 | 浙江华宇钠电新能源科技有限公司 | Method for prolonging service life of sodium ion battery and electric vehicle applying method |
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