CN112098867B - Method, device and medium for determining remaining capacity and capacity display information of battery - Google Patents
Method, device and medium for determining remaining capacity and capacity display information of battery Download PDFInfo
- Publication number
- CN112098867B CN112098867B CN202010827929.7A CN202010827929A CN112098867B CN 112098867 B CN112098867 B CN 112098867B CN 202010827929 A CN202010827929 A CN 202010827929A CN 112098867 B CN112098867 B CN 112098867B
- Authority
- CN
- China
- Prior art keywords
- capacity
- battery
- preset
- discharge
- time
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
- G01R31/387—Determining ampere-hour charge capacity or SoC
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/367—Software therefor, e.g. for battery testing using modelling or look-up tables
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Tests Of Electric Status Of Batteries (AREA)
- Secondary Cells (AREA)
Abstract
The application discloses a method, equipment and medium for determining battery residual capacity and capacity display information. The method for determining the residual capacity of the battery comprises the following steps: acquiring the discharge capacity condition of the battery in a preset time before a target moment; detecting whether the battery enters a linear discharge state by using the discharge capacity condition; and determining the actual residual capacity of the battery at the target moment based on the discharge capacity condition in response to the battery entering the linear discharge state. The scheme can realize the determination of the real residual capacity in the working process of the battery.
Description
Technical Field
The present invention relates to the field of battery technologies, and in particular, to a method, an apparatus, and a medium for determining remaining capacity and capacity display information of a battery.
Background
Battery capacity is one of the important performance indicators for measuring battery performance, and represents the amount of power that a battery emits under certain conditions. Generally, the open-circuit voltage is used to directly predict the residual capacity of the battery, and the method is to obtain the voltage-capacity relationship of the battery in an ideal use state, and then the residual capacity of the battery is obtained by using the voltage of the battery without considering the real-time working condition of the battery in the actual use process of the battery.
It can be understood that in the actual use process of the battery, the residual capacity is not the voltage-capacity corresponding relation in a single ideal use state under different conditions, but the residual capacity of the battery is directly predicted to have different magnitudes with the voltage at different moments in the face of complex and changeable conditions such as workload, working environment and working power. Based on this, how to determine the real residual capacity during the use of the battery is a problem to be solved in the face of complex and changeable working conditions.
Disclosure of Invention
The application mainly provides a method, equipment and medium for determining battery residual capacity and capacity display information.
The first aspect of the present application provides a method for determining a remaining capacity of a battery, including: acquiring the discharge capacity condition of the battery in a preset time before a target moment; detecting whether the battery enters a linear discharge state or not by utilizing the discharge capacity condition; and determining the actual residual capacity of the battery at the target moment based on the discharge capacity condition in response to the battery entering the linear discharge state.
Wherein the determining, based on the discharge capacity condition, a true remaining capacity of the battery at the target time includes: determining the cycle discharge capacity of the battery per preset cycle in the linear discharge state based on the discharge capacity condition; obtaining the residual cycle number of the battery, wherein the residual cycle number is the number of the preset cycles contained in the current discharging completion process of the battery; and obtaining the product of the periodic discharge capacity and the residual period number to obtain the actual residual capacity of the battery at the target moment.
Wherein the preset time includes a preset number of preset periods, and the discharge capacity condition includes a measured discharge capacity of each of the preset periods; the determining the cycle discharge capacity of the battery per preset cycle in the linear discharge state based on the discharge capacity condition comprises the following steps: taking the average value of the preset number of the measured discharge capacities as the periodic discharge capacity; the obtaining the remaining cycle number of the battery includes: obtaining the residual voltage of the battery and the periodic discharge voltage, wherein the residual voltage is the difference between the current voltage of the battery and the cut-off voltage, and the periodic discharge voltage is the discharge voltage in one preset period in the preset time; and obtaining the quotient between the residual voltage and the periodic discharge voltage to obtain the residual period number.
Wherein the preset time includes a preset number of preset periods, and the discharge capacity condition includes a measured discharge capacity of each of the preset periods; the detecting whether the battery enters a linear discharge state by utilizing the discharge capacity condition comprises the following steps: judging whether the change conditions of the preset number of measured discharge capacities meet preset conditions or not; if yes, determining that the battery enters a linear discharging state.
Wherein the determining whether the change condition of the preset number of measured discharge capacities meets a preset condition includes: acquiring average values of the preset number of measured discharge capacities; judging whether the difference value of each measured discharge capacity and the average value is within a preset range or not; if yes, determining that the change condition of the preset number of measured discharge capacities meets a preset condition; the obtaining the discharge capacity condition of the battery in a preset time before the target time comprises the following steps: acquiring working current in each preset period in the preset time; taking the product between the preset period and the corresponding working current as the measured discharge capacity of the preset period.
In order to solve the above problem, a second aspect of the present application provides a method for determining battery capacity display information, including: acquiring a first estimated residual capacity of a battery at a first moment, and determining first capacity display information corresponding to the first moment based on the first estimated residual capacity; determining second capacity display information corresponding to a subsequent moment based on the first estimated remaining capacity and the first real remaining capacity under the condition that the first real remaining capacity of the battery at the first moment is determined; wherein the first real residual capacity is the real residual capacity obtained by the method of the first aspect.
Wherein the determining, based on the first estimated remaining capacity and the first actual remaining capacity, second capacity display information corresponding to a subsequent time includes: if the first real residual capacity is larger than the first estimated residual capacity, determining the second capacity display information corresponding to the first time to the second time as the first capacity display information, and determining the second capacity display information corresponding to the second time based on the second real residual capacity of the battery after the second time, wherein the difference value between the second real residual capacity of the battery at the second time and the first estimated residual capacity is smaller than a preset capacity difference value; if the first real residual capacity is equal to the first estimated residual capacity, determining second capacity display information corresponding to the subsequent moment based on the second real residual capacity of the battery at the subsequent moment; if the first real residual capacity is smaller than the first estimated residual capacity, obtaining second estimated residual capacity of the battery from the first moment to a third moment, determining second capacity display information corresponding to the first moment to the third moment based on the second estimated residual capacity, and determining the second capacity display information corresponding to the third moment based on the second real residual capacity of the battery after the third moment, wherein the second estimated residual capacity from the first estimated residual capacity to the third moment is reduced to the first real residual capacity according to time sequence.
The capacity display information is a ratio between the corresponding real residual capacity or the corresponding estimated residual capacity and the maximum capacity of the battery; the time difference between the second time and the first time is: reducing the first real residual capacity to be equal to or smaller than the time required by the first estimated residual capacity in a mode of reducing the cycle discharge capacity per preset cycle, wherein the cycle discharge capacity is the discharge capacity of the battery per preset cycle in a linear discharge state; the obtaining the second estimated remaining capacity of the battery between the first time and the third time includes: acquiring a capacity difference between the first estimated remaining capacity and the first real remaining capacity; equally dividing the capacity difference into a preset number of compensation discharge capacities, and taking the sum of the periodic discharge capacities and the compensation discharge capacities as a unit discharge capacity; and in the preset number of preset periods after the first time, reducing the unit discharge capacity of the first estimated residual capacity according to each preset period to obtain a second estimated residual capacity of the battery between the first time and a third time.
A third aspect of the present application provides an electronic device, including a memory and a processor coupled to each other, where the processor is configured to execute program instructions stored in the memory to implement the method for determining a remaining battery capacity according to the first aspect and/or implement the method for determining battery capacity display information according to the second aspect.
A fourth aspect of the present application provides a computer-readable storage medium having stored thereon program instructions, wherein the program instructions, when executed by a processor, implement the method for determining a remaining battery capacity according to the first aspect and/or implement the method for determining battery capacity display information according to the second aspect.
According to the scheme, the discharge capacity condition of the battery in the preset time before the target moment is obtained, then the discharge capacity condition is utilized to detect that the battery enters the linear discharge state, then the battery is responded to enter the linear discharge state, and the real residual capacity of the battery at the target moment is determined based on the discharge capacity condition, so that the real residual capacity of the battery at the target moment in the working process of the battery is obtained based on the discharge capacity condition of the linear discharge state after the battery is in the linear discharge state is determined by utilizing the discharge capacity condition of a period of time, the real residual capacity is determined in real time through the discharge capacity condition of the battery in the past linear discharge state, the complex condition in the actual working of the battery can be dealt with, and the prediction precision of the real residual capacity is improved.
Drawings
FIG. 1 is a flow chart of an embodiment of a method for determining the remaining capacity of a battery according to the present application;
fig. 2 is a flowchart of step S13 of an embodiment of a method for determining a remaining battery capacity of the present application;
FIG. 3 is a flow chart of an embodiment of a method for determining battery capacity display information according to the present application;
FIG. 4 is a schematic diagram of a framework of an embodiment of the electronic device of the present application;
fig. 5 is a schematic structural view of an embodiment of a determination device of the remaining capacity of the battery of the present application;
FIG. 6 is a schematic diagram of a framework of one embodiment of a computer readable storage medium of the present application.
Detailed Description
The following describes the embodiments of the present application in detail with reference to the drawings.
Referring to fig. 1, fig. 1 is a flowchart illustrating an embodiment of a method for determining a remaining battery capacity according to the present application. Specifically, the method of the embodiment comprises the following steps:
step S11: and obtaining the discharge capacity condition of the battery in a preset time before the target moment.
The target time is the time corresponding to the real residual capacity which needs to be determined in the working process of the battery. The discharge capacity condition may include discharge capacities corresponding to different times within a preset time. In one embodiment, the predetermined time may include a predetermined number of predetermined cycles, and the discharge capacity condition may include a measured discharge capacity per predetermined cycle.
It can be appreciated that the sum of the times of the preset number of preset periods is less than or equal to the preset time, specifically, in the case that the sum of the times of the preset number of preset periods is equal to the preset time, the preset number of consecutive preset periods forms the preset time, in other words, the preset periods are consecutive within the preset time; in case the sum of the times of the preset number of preset periods is smaller than the preset time, there are equal or unequal time intervals between all or part of the preset periods, e.g. the same time interval between each preset period. The preset number of preset periods within the preset time may be continuous or intermittent, and thus, the composition of the preset time is not particularly limited herein. The target time is a time corresponding to a preset period with the latest time sequence in a preset number of preset periods.
Step S12: and detecting whether the battery enters a linear discharge state or not by utilizing the discharge capacity condition.
In this embodiment, by analyzing the discharge capacity at each time in the discharge capacity case, it is possible to determine whether the battery enters a linear discharge state. For example, in a preset time including a preset number of preset periods, the discharge capacity condition includes a measured discharge capacity of each preset period, and whether the change condition of the preset number of measured discharge capacities satisfies a preset condition can be determined; if the change condition of the preset number of measured discharge capacities meets the preset condition, determining that the battery enters a linear discharge state, otherwise, determining that the battery does not enter the linear discharge state.
Under the condition that the battery enters a linear discharging state, the voltage variation, the capacity variation and the battery discharging speed are all linearly changed in a preset period, wherein the battery discharging speed is the ratio of the capacity variation to the voltage variation. The preset condition may be that the difference between each measured discharge capacity and the average value of the preset number of measured discharge capacities is within a preset range, and the preset range is greater than or equal to zero, or that the discharge speed of the battery is within a preset discharge speed, which is not limited herein.
In an embodiment, in a preset time, acquiring a working current in each preset period, taking a product between the preset period and the corresponding working current as a measured discharge capacity corresponding to the preset period, and acquiring an average value of the preset number of measured discharge capacities after acquiring the preset number of measured discharge capacities corresponding to the preset number of preset periods; judging whether the difference value of each measured discharge capacity and the average value is within a preset range or not; if the difference value between each measured discharge capacity and the average value is within the preset range, determining that the change condition of the preset number of measured discharge capacities meets the preset condition. In another embodiment, in order to improve the accuracy of the judgment of the linear discharge state and further improve the accuracy of the real residual capacity, each measured discharge capacity is equal to the average value of the preset number of measured discharge capacities, it is determined that the variation condition of the preset number of measured discharge capacities meets the preset condition, and then it is determined that the battery enters the linear discharge state.
Under the condition that the battery is not in the linear discharging state, determining a time after the time sequence of the original target time as a new target time, or keeping the target time unchanged, adjusting a preset period, and returning to the step S11 to acquire the discharging capacity condition of the battery in the preset time before the target time. When the sum of the preset number of preset periods is equal to the preset time, the preset number of preset periods in the preset time is continuous, and the time corresponding to the next preset period is taken as the new target time.
In an application embodiment, the preset number is 3, the preset period of detecting whether the battery enters the linear discharge state for the first time is T1, T2 and T3 respectively, the target time is a time after T3, after the discharge capacity condition of the battery before the target time is obtained, the battery is detected to not enter the linear discharge state, then the new target time is determined to be a time after T4, the preset period of detecting whether the battery enters the linear discharge state for the second time is T2, T3 and T4 respectively, the discharge capacity condition of the battery before the new target time is obtained again, and the discharge capacity condition is utilized to detect whether the battery enters the linear discharge state, so on until the battery is detected to enter the linear discharge state.
In another application embodiment, the preset time includes discontinuous preset periods, the preset number is 3, whether the preset periods of the battery entering the linear discharge state are T1, T2 and T4 is detected for the first time, the target time is the time after T4, after the discharge capacity condition of the battery before the target time is obtained, whether the battery enters the linear discharge state is detected, the time after the target time is T4 can be kept, whether the preset periods of the battery entering the linear discharge state is T2, T3 and T4 is detected for the second time, the discharge capacity condition of the battery before the target time is obtained again, and whether the battery enters the linear discharge state is detected by utilizing the discharge capacity condition; a new target time, for example, a time after the new target time is T5, may be determined, the discharge capacity condition of the battery before the new target time is re-acquired, and whether the battery enters the linear discharge state is detected by using the discharge capacity condition until the battery is detected to enter the linear discharge state. The embodiment of the present application is only for illustrating the determination of the preset time and the preset period and the judgment of the linear discharge state, and reference may also be made to the above step S11 and step S12, which are not described herein again.
Step S13: and determining the actual residual capacity of the battery at the target moment based on the discharge capacity condition in response to the battery entering the linear discharge state.
Under different working powers, the actual residual capacity of the battery has larger difference, and after the battery enters a linear discharge state, the actual residual capacity determined by the discharge capacity condition in the linear discharge state is closer to the actual capacity condition, so that the prediction precision of the actual residual capacity is improved. Considering that under different use conditions, the real residual capacity of the battery has a large difference with the estimated residual capacity corresponding to the open-circuit voltage, and after judging that the battery enters a linear discharge state, the real residual capacity is predicted according to the discharge capacity condition of the linear interval, so that the real residual capacity can be determined in the real-time process of different use conditions.
According to the method, the discharge capacity condition of the battery in the preset time before the target moment is obtained, the discharge capacity condition is utilized, after the battery is detected to enter the linear discharge state, the real residual capacity of the battery at the target moment is determined based on the discharge capacity condition after the battery enters the linear discharge state, so that the real residual capacity of the battery at the future target moment is obtained in the working process of the battery based on the discharge capacity condition in the past linear discharge state after the battery is in the linear discharge state is determined based on the discharge capacity condition of a period of time, the real residual capacity is determined in real time according to the discharge capacity condition of the battery in the past linear discharge state, the complex condition in the actual working of the battery can be dealt with, and the prediction precision of the real residual capacity is improved.
As shown in fig. 2, fig. 2 is a flowchart illustrating a step S13 of an embodiment of a method for determining a remaining battery capacity of the present application. Based on the discharge capacity condition, the step of determining the actual residual capacity of the battery at the target moment specifically comprises the following steps:
step S131: based on the discharge capacity condition, the cycle discharge capacity of the battery per a preset cycle in a linear discharge state is determined.
And obtaining the average value of the preset number of measured discharge capacities as the cycle discharge capacity after obtaining the measured discharge capacity of the preset cycle by utilizing the product between the preset cycle and the corresponding working current.
In order to facilitate understanding how to predict the actual residual capacity after the battery enters the linear discharge state according to the present application, the following description is made with reference to a specific example by using the previous discharge capacity situation:
in an application embodiment, the preset period is T and the preset number is 3 when the discharge capacity condition is obtained; when the battery is detected to be in a linear discharge state or not, determining that the change condition of the preset number of measured discharge capacities meets the preset condition if the average value of each measured discharge capacity is equal to the average value of the preset number of measured discharge capacities. After the battery is assembled in the electronic equipment, starting discharging, and obtaining working currents I1, I2 and I3 in three preset periods T; the product between the preset period T and the corresponding working current is taken as the measured discharge capacity c1=i1× T, C2 =i2×t and c3=i3×t of the preset period T, so as to obtain the discharge capacity condition of the battery in the preset time before the target time. Obtaining an average value C of three measured discharge capacities C1, C2 and C3 Average of The method comprises the steps of carrying out a first treatment on the surface of the Determining whether each of the measured discharge capacities C1, C2 and C3 is equal to the average value C Average of The method comprises the steps of carrying out a first treatment on the surface of the If c1=c2=c3=c Average of Determining that the change conditions of the three measurement discharge capacities meet preset conditions, so as to detect that the battery enters a linear discharge state, wherein the target moment is a moment after C3; if c1=c2=c3=c is not satisfied Average of Acquiring a working current I4 and a corresponding measured discharge capacity C4=I4×T in a preset period T, and acquiring new average values C of the new three measured discharge capacities C2, C3 and C4 Average of Re-judging whether each of the measured discharge capacities C2, C3 and C4 is equal to the new average value C Average of If c2=c3=c4=c Average of Determining that the battery enters a linear discharge state, and at the moment, targetingTime after C4; if c2=c3=c4=c is not satisfied Average of And re-acquiring C5 to judge whether the preset number of measured discharge capacities are equal to the average value, and so on until the preset number of measured discharge capacities are judged to be equal to the average value, and judging that the battery enters a linear discharge state.
The present application embodiment takes the time after C4 as the target time, and determines the actual remaining capacity of the battery at C4 as an example. Corresponding to this step S131, the average value C is then Average of As a cycle discharge capacity. In another embodiment, the periodic discharge capacity may have a preset error from the average value, such that the maximum value of the periodic discharge capacity is the sum of the average value and the preset error, and the minimum value is the difference between the average value and the preset error.
Step S132: the remaining cycle number of the battery is obtained.
The remaining cycle number is the number of preset cycles included in the current to discharge completion process of the battery. The acquisition mode of the residual cycle number comprises the following steps: and obtaining the residual voltage and the periodic discharge voltage of the battery, and obtaining the quotient between the residual voltage and the periodic discharge voltage to obtain the residual period number. In the case where there is a remainder after the remainder voltage and the periodic discharge voltage are divided, the quotient is taken as the remainder period number.
Wherein the remaining voltage is the difference between the current voltage and the cutoff voltage of the battery. It will be appreciated that the cut-off voltage is the lowest voltage of the battery and that an electronic device served by the battery will not be able to operate when the voltage value is less than the cut-off voltage. The cut-off voltage can be set in a customized manner according to practical situations, and is not particularly limited herein.
The periodic discharge voltage is a discharge voltage within a preset period within a preset time. It can be understood that when whether the battery enters a linear discharge state is detected by judging whether the change condition of the preset number of measured discharge capacities meets the preset condition, if each measured discharge capacity is equal to the average value of the preset number of measured discharge capacities or the average value of the measured discharge capacities is equal to the average value of the preset number of measured discharge capacities, the average value of the preset number of measured discharge capacities is taken as a periodic discharge voltage; otherwise, the discharge voltage within any predetermined period may be determined as the periodic discharge voltage, or the measured discharge capacity having the smallest difference from the average value may be determined as the periodic discharge voltage, which is not particularly limited herein.
In this embodiment, the average value U of the preset number of measured discharge capacities Average of As a periodic discharge voltage. The target time is the time after C4, the residual voltage is the difference U4-U0 between the current voltage U4 and the cut-off voltage U0 of the battery, and the periodic discharge voltage U T ＝U Average of Quotient U4-U0/U for obtaining residual cycle number of battery Average of . The remaining cycle number of the battery is recorded as N, N=U4-U0/U Average of 。
Step S133: and obtaining the product between the cycle discharge capacity and the residual cycle number to obtain the actual residual capacity of the battery at the target moment.
After the cycle discharge capacity and the residual cycle number are obtained, the product between the cycle discharge capacity and the residual cycle number can be used as the real residual capacity of the battery at the target moment, or the sum of the product and the preset capacity can be used as the real residual capacity of the battery at the target moment after the product between the cycle discharge capacity and the residual cycle number is obtained. In order to make up for a certain capacity difference between the capacity and zero in the full-discharge state of the battery, the product obtained by multiplying the periodic discharge capacity and the residual cycle number is added with the preset capacity corresponding to the capacity difference to obtain the actual residual capacity of the battery at the target moment, and the accuracy of the actual residual capacity can be improved.
In this embodiment, the cycle discharge capacity C Average of Multiplying the residual cycle number N to obtain the true residual capacity of the battery at the corresponding moment of C4 as C Average of *N。
Therefore, whether the battery enters a linear discharge state or not is determined according to the discharge capacity condition of a period of time, if so, the real residual capacity at the target moment can be calculated based on the discharge capacity condition of the linear discharge state, the real residual capacity can be determined in the working process of the battery, the real residual capacity is determined in real time according to the discharge capacity condition of the battery in the past linear discharge state, the complex condition in the actual working of the battery can be dealt with, and the accuracy of predicting the real residual capacity is improved. In practical application, the determination of the real residual capacity can be realized in the practical use process of the battery, the capacity gradient value is not required to be obtained through the process of full charge-full discharge for many times on the production line to serve as a reference for predicting the real residual capacity, and the battery can be delivered for sale after normal assembly, and the real residual capacity can be determined in real time in the use process, so that the manufacturing processes of assembly, detection and the like are simple and quick, and the production efficiency can be greatly improved especially when the battery is applied to products with small production consumption such as small household appliances.
Referring to fig. 3, fig. 3 is a flowchart illustrating an embodiment of a method for determining battery capacity display information according to the present application. Specifically, the method of the embodiment comprises the following steps:
step S31: the method comprises the steps of obtaining a first estimated residual capacity of a battery at a first moment, and determining first capacity display information corresponding to the first moment based on the first estimated residual capacity.
The first moment is any moment in the working process of the battery. Generally, before determining to obtain the actual remaining capacity of the battery, the estimated remaining capacity at the corresponding time is used to determine the capacity display information at the corresponding time.
Before the estimated remaining capacity of the battery at the corresponding time is obtained, a voltage-capacity curve of the battery at the open circuit voltage may be obtained. Specifically, the battery is charged to be in a full charge state, when the battery temperature and the test temperature are detected to be within the preset temperature range, the battery enters a discharge state with the simulation multiplying power, whether the battery enters the full charge state is judged, if not, the steps of detecting the battery temperature and the test temperature within the preset temperature range and the battery enters the discharge state with the simulation multiplying power are repeated until the battery is detected to be in the full charge state. Discrete sets of voltage capacity data are acquired and recorded during the change of the battery from the full charge state to the full discharge state, and a continuous voltage-capacity curve is obtained through linear interpolation. After the voltage-capacity curve of the battery under the open-circuit voltage is obtained, the voltage at the corresponding moment of the battery is utilized to obtain the first estimated residual capacity at the corresponding moment, namely the first estimated residual capacity is the estimated value of the battery at the first moment under the open-circuit voltage.
The capacity display information is information that can indicate the remaining capacity of the battery and is used for display, and may be, for example, a value of the remaining capacity directly or a percentage of the remaining capacity. The remaining capacity percentage is the ratio between the corresponding remaining capacity and the maximum capacity of the battery. For convenience of explanation, the capacity display information is collectively exemplified as a percentage of the remaining capacity. Therefore, the first capacity display information is the corresponding ratio between the first estimated remaining capacity and the maximum capacity of the battery.
Step S32: in the case of determining a first true remaining capacity of the battery at a first time, second capacity display information corresponding to a subsequent time is determined based on the first estimated remaining capacity and the first true remaining capacity.
The first real remaining capacity is a real remaining capacity obtained using any one of the embodiments of the determination method for remaining capacity of a battery corresponding to fig. 1 described above. If the battery is in a linear discharge state at a first time, the first real remaining capacity can be obtained. After the first estimated remaining capacity and the first real remaining capacity corresponding to the first moment are obtained, the second capacity display information can be determined. It can be understood that after the battery is applied to electronic devices such as intelligent home appliances, the capacity display information is a residual capacity value, a residual capacity percentage and the like displayed to a user by the electronic device. The remaining capacity of the battery may be the remaining capacity of the battery of the electronic device or the remaining capacity of the battery of the other device connected to the electronic device, and is not particularly limited herein. In order to reduce abrupt change of the capacity display information, the capacity display information is enabled to be gentle and continuously approximate to the real situation, and the second capacity display information is determined according to the size relation between the first estimated residual capacity and the first real residual capacity. The second capacity display information is determined based on the second real residual capacity of the battery at the subsequent moment, or is obtained after dynamic calibration according to the second real residual capacity at the corresponding moment. The second capacity display information acquisition mode is specifically as follows:
First case: if the first real residual capacity is larger than the first estimated residual capacity, the change speed of the capacity display information needs to be delayed, so that the second capacity display information corresponding to the first time to the second time is determined as the first capacity display information.
At the second moment, the difference between the second real residual capacity and the first estimated residual capacity of the battery is smaller than the preset capacity difference, namely, after the second moment, the capacity change of the first estimated residual capacity and the first real residual capacity after the same time passes is similar, even the same. The time difference between the second time and the first time is: and reducing the first real residual capacity to be equal to or smaller than the time required by the first estimated residual capacity in a mode of reducing the periodic discharge capacity per preset period, wherein the periodic discharge capacity is the discharge capacity per preset period of the battery in a linear discharge state.
Since the difference between the second actual remaining capacity of the battery and the first estimated remaining capacity at the second time is smaller than the preset capacity difference, the second capacity display information corresponding to the second time can be determined based on the second actual remaining capacity of the battery after the second time. That is, after the first time and before the second time, the second capacity display information is kept as the first capacity display information, and the first real remaining capacity is continuously reduced and is equal to the first estimated remaining capacity at the second time; from the second moment, the corresponding estimated remaining capacity is equal to the corresponding real remaining capacity, so the second capacity display information is equal to the ratio between the second real remaining capacity and the maximum capacity of the battery.
With the first real residual capacity as C True and true First estimated remaining capacity C Estimating The first capacity display information is SOC1, and the second capacity display information is SOC 2.
In an application embodiment, at a first time instant, the first real remaining capacity is C True and true Greater than the first estimated remaining capacity C Estimating The first capacity display information is SOC1; between the first time and the second time, the first real residual capacity is C True and true Still greater than the first estimated remaining capacity C Estimating The second capacity display information SOC2 is kept as being displayed with the first capacityThe information is shown as SOC 1. The first real residual capacity C is reduced according to the mode of reducing the cycle discharge capacity every preset cycle True and true Reduced to be equal to or smaller than the first estimated remaining capacity C Estimating During this time, the second capacity display information SOC2 remains unchanged. Starting from the second moment, the corresponding real residual capacity is equal to the corresponding estimated residual capacity, the cycle discharge capacity is reduced every preset cycle, and the second capacity display information at the subsequent moment is equal to the ratio between the corresponding real residual capacity and the maximum capacity of the battery.
Because the first real residual capacity is larger than the first estimated residual capacity, the first real residual capacity is normally reduced at the first moment and the second moment, and the second capacity display information displayed to the user is kept unchanged in the first capacity display information until the difference between the second real residual capacity of the battery and the first estimated residual capacity is smaller than the preset capacity difference, so that the display condition is synchronous with the real condition, the second capacity display information is equal to the ratio between the corresponding real residual capacity and the maximum capacity of the battery, and the correction of the second capacity display information is realized.
Second case: and if the first real residual capacity is equal to the first estimated residual capacity, determining second capacity display information corresponding to the subsequent moment based on the second real residual capacity of the battery at the subsequent moment. And when the corresponding real residual capacity is equal to the corresponding estimated residual capacity, the second capacity display information is equal to the ratio between the corresponding real residual capacity and the maximum capacity of the battery, and is also equal to the ratio between the corresponding estimated residual capacity and the maximum capacity of the battery, and the second capacity display information at the subsequent moment is equal to the ratio between the corresponding real residual capacity and the maximum capacity of the battery.
In an application embodiment, the first real residual capacity is C True and true Equal to the first estimated remaining capacity C Estimating That is, at the moment when the first moment is just the real residual capacity and the estimated residual capacity, the second capacity display information is equal to the ratio between the corresponding real residual capacity and the maximum capacity of the battery, wherein the corresponding real residual capacity is subtracted every preset periodThe manner of the small cycle discharge capacity is continuously decreasing.
Third case: if the first real residual capacity is smaller than the first estimated residual capacity and the change speed of the capacity display information needs to be corrected and accelerated, obtaining second estimated residual capacity of the battery from the first moment to the third moment, and determining second capacity display information corresponding to the first moment to the third moment based on the second estimated residual capacity. The second estimated remaining capacity between the first time and the third time is reduced from the first estimated remaining capacity to the first real remaining capacity according to the time sequence.
The second estimated remaining capacity obtaining mode between the first time and the third time is as follows: acquiring a capacity difference between the first estimated residual capacity and the first real residual capacity; equally dividing the capacity difference into a preset number of compensation discharge capacities, and taking the sum of the periodic discharge capacity and the compensation discharge capacity as a unit discharge capacity; and in a preset number of preset periods after the first time, reducing the first estimated residual capacity by a unit discharge capacity according to each preset period to obtain a second estimated residual capacity of the battery between the first time and a third time.
Before the third moment, the second estimated remaining capacity is continuously reduced until the second estimated remaining capacity is equal to the first real remaining capacity, so that second capacity display information which is equal to the ratio between the corresponding estimated remaining capacity and the maximum capacity of the battery is continuously reduced; starting from the third moment, the corresponding estimated remaining capacity is equal to the corresponding real remaining capacity, and the second capacity display information is equal to the ratio between the second real remaining capacity and the maximum capacity of the battery, so that the second capacity display information after the corresponding third moment is determined based on the second real remaining capacity of the battery after the third moment.
The capacity difference between the first estimated residual capacity and the first real residual capacity is gradually compensated for a preset quantity, so that smooth reduction of the second estimated residual capacity is realized, the second capacity display information seen by a user is subjected to natural and gentle change, and the user experience is improved.
In an application embodiment, the first real residual capacity is C True and true Less than the firstAn estimated remaining capacity C Estimating Obtaining a first estimated residual capacity C Estimating And the first real residual capacity C True and true Capacity difference C between Estimating -C Estimating By differentiating the volume by C Estimating -C Estimating Equally dividing into N' compensation discharge capacities C Compensation N' is less than or equal to the number of remaining cycles N when the first real remaining capacity is acquired. In the method for determining the remaining battery capacity shown in fig. 1, the average value C is calculated Average of As the cycle discharge capacity, the compensation discharge capacity C was obtained Compensation After that, the cycle discharge capacity C Average of And compensating discharge capacity C Compensation The sum is taken as the unit discharge capacity C Compensation +C Compensation The method comprises the steps of carrying out a first treatment on the surface of the In the N' preset period after the first time, the first estimated residual capacity C Estimating Decreasing the unit discharge capacity per preset period, e.g. after a first preset period after a first moment is elapsed, equal to a first estimated remaining capacity C Estimating Subtracting the unit discharge capacity C Compensation +C Compensation Until the corresponding estimated remaining capacity is equal to the corresponding actual remaining capacity. After obtaining the second estimated remaining capacity of the battery between the first time and the third time, determining second capacity display information corresponding to the first time to the third time based on the second estimated remaining capacity.
By the method, the voltage capacity curve corresponding to the open-circuit voltage is only used as the initial predicted value of the first estimated residual capacity and the corresponding first capacity display information, the capacity display information at the subsequent moment can be continuously adjusted and corrected according to the first real residual capacity and the first estimated residual capacity, and the second capacity display information at the corresponding subsequent moment can be determined, so that the capacity display information can be continuously corrected in the actual use process of the battery, and the capacity display information is close to the real capacity change condition.
Referring to fig. 4, fig. 4 is a schematic frame diagram of an embodiment of an electronic device of the present application. Specifically, the electronic device 400 in this embodiment includes a memory 410 and a processor 420 coupled to each other. The memory 410 is used for storing program instructions and data to be stored when processed by the processor 420. The electronic device 400 may include a battery, and the processor 420 may be used to control the memory 410 and itself to implement the method for determining the remaining battery capacity described above, and may determine the actual remaining battery capacity during its own battery operation. The electronic device 400 may be a smart home appliance having a battery, and the type of the smart home appliance is not particularly limited. The electronic device 400 may also control the memory 410 and itself using the processor 420 to implement the method of determining remaining battery capacity described above, to determine the actual remaining battery capacity of the remaining devices connected to the electronic device 400.
The processor 420 controls the memory 410 and itself to implement the steps of any of the embodiments of the method for determining the remaining battery capacity and/or any of the embodiments of the method for determining the battery capacity display information described above. The processor 420 may also be referred to as a CPU (Central Processing Unit ). The processor 420 may be an integrated circuit chip with signal processing capabilities. The processor 420 may also be a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a Field programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. In addition, the processor 420 may be commonly implemented by a plurality of constituent circuit chips.
Referring to fig. 5, fig. 5 is a schematic structural diagram of an embodiment of a device for determining a remaining capacity of a battery according to the present application. As shown in fig. 5, the electronic device 500 includes an acquisition module 510, a detection module 520, and a determination module 530.
An obtaining module 510, configured to obtain a discharge capacity condition of the battery in a preset time before the target time; the detection module 520 is configured to detect whether the battery enters a linear discharge state by using a discharge capacity condition; a determining module 530 is configured to determine a true remaining capacity of the battery at the target time based on the discharge capacity condition in response to the battery entering the linear discharge state. Therefore, after the obtaining module 510 obtains the discharge capacity condition of the battery within the preset time before the target moment, the detecting module 520 detects whether the battery enters the linear discharge state by using the discharge capacity condition, if the detecting module 520 detects that the battery enters the linear discharge state, the determining module 530 determines the real residual capacity of the battery at the target moment based on the discharge capacity condition in response to the battery entering the linear discharge state, so that the real residual capacity is determined in real time according to the discharge capacity condition of the battery in the previous linear discharge state, the complex condition in the actual working of the battery can be dealt with, and the prediction precision of the real residual capacity is improved.
The obtaining module 510 is further configured to obtain a first estimated remaining capacity of the battery at a first time; the determining module 530 is further configured to determine first capacity display information corresponding to the first time based on the first estimated remaining capacity; the determining module 530 is further configured to determine, in case of determining a first real remaining capacity of the battery at the first time, second capacity display information corresponding to a subsequent time based on the first estimated remaining capacity and the first real remaining capacity. The first real residual capacity is obtained by determining the real residual capacity in real time under the condition of the discharge capacity of the battery in the conventional linear discharge state. By the method, the second capacity display information at the subsequent moment is determined according to the first real residual capacity and the first estimated residual capacity, and the capacity display information can be continuously corrected in the actual use process of the battery so as to be close to the real capacity change condition.
The implementation function of each module in this embodiment may refer to the relevant description of the corresponding steps in the foregoing embodiment.
Referring to fig. 6, fig. 6 is a schematic diagram illustrating a frame of an embodiment of a storage device 600 according to the present application. The storage device 600 stores program instructions 610 that can be executed by a processor, where the program instructions 610 are configured to implement the steps of any embodiment of the method for determining a remaining battery capacity and/or any embodiment of the method for determining battery capacity display information.
The storage device 600 may be a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, etc. which may store the program instructions 610, or may be a server storing the program instructions 610, and the server may send the stored program instructions 610 to another device for execution, or may also self-execute the stored program instructions 610.
In the several embodiments provided in the present application, it should be understood that the disclosed methods and apparatus may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of modules or units is merely a logical functional division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in part or all or part of the technical solution contributing to the prior art or in the form of a software product stored in a storage medium, including several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to perform all or part of the steps of the methods of 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, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Claims (8)
1. A method for determining remaining capacity of a battery, comprising:
acquiring the discharge capacity condition of the battery in a preset time before a target moment;
detecting whether the battery enters a linear discharge state or not by utilizing the discharge capacity condition;
determining a true remaining capacity of the battery at the target time based on the discharge capacity condition in response to the battery entering the linear discharge state;
wherein the determining, based on the discharge capacity condition, a true remaining capacity of the battery at the target time includes:
determining the cycle discharge capacity of the battery per preset cycle in the linear discharge state based on the discharge capacity condition;
obtaining the residual cycle number of the battery, wherein the residual cycle number is the number of the preset cycles contained in the current discharging completion process of the battery;
obtaining the product between the periodic discharge capacity and the residual period number to obtain the actual residual capacity of the battery at the target moment;
the preset time comprises a preset number of preset periods, and the discharge capacity condition comprises a measured discharge capacity of each preset period; the detecting whether the battery enters a linear discharge state by utilizing the discharge capacity condition comprises the following steps: judging whether the change conditions of the preset number of measured discharge capacities meet preset conditions or not; if yes, determining that the battery enters a linear discharge state, wherein the judging whether the change condition of the preset number of measured discharge capacities meets a preset condition comprises the following steps: acquiring average values of the preset number of measured discharge capacities; judging whether the difference value of each measured discharge capacity and the average value is within a preset range or not; if yes, determining that the change condition of the preset number of measured discharge capacities meets a preset condition.
2. The method of claim 1, wherein the preset time comprises a preset number of the preset cycles, and the discharge capacity condition comprises a measured discharge capacity for each of the preset cycles;
the determining the cycle discharge capacity of the battery per preset cycle in the linear discharge state based on the discharge capacity condition comprises the following steps:
taking the average value of the preset number of the measured discharge capacities as the periodic discharge capacity;
the obtaining the remaining cycle number of the battery includes:
acquiring the residual voltage of the battery and the periodic discharge voltage, wherein the residual voltage is the difference between the current voltage and the cut-off voltage of the battery, and the periodic discharge voltage is the discharge voltage in one preset period in the preset time;
and obtaining the quotient between the residual voltage and the periodic discharge voltage to obtain the residual period number.
3. The method of claim 1, wherein the step of determining the position of the substrate comprises,
the obtaining the discharge capacity condition of the battery in a preset time before the target time comprises the following steps:
acquiring working current in each preset period in the preset time;
Taking the product between the preset period and the corresponding working current as the measured discharge capacity of the preset period.
4. A method for determining battery capacity display information, comprising:
acquiring a first estimated residual capacity of a battery at a first moment, and determining first capacity display information corresponding to the first moment based on the first estimated residual capacity;
determining second capacity display information corresponding to a subsequent moment based on the first estimated remaining capacity and the first real remaining capacity under the condition that the first real remaining capacity of the battery at the first moment is determined;
wherein the first real remaining capacity is a real remaining capacity obtained by the method of any one of claims 1 to 3.
5. The method of claim 4, wherein the determining second capacity display information corresponding to a subsequent time based on the first estimated remaining capacity and the first actual remaining capacity comprises:
if the first real residual capacity is larger than the first estimated residual capacity, determining the second capacity display information corresponding to the first time to the second time as the first capacity display information, and determining the second capacity display information corresponding to the second time based on the second real residual capacity of the battery after the second time, wherein the difference value between the second real residual capacity of the battery at the second time and the first estimated residual capacity is smaller than a preset capacity difference value;
If the first real residual capacity is equal to the first estimated residual capacity, determining second capacity display information corresponding to the subsequent moment based on the second real residual capacity of the battery at the subsequent moment;
if the first real residual capacity is smaller than the first estimated residual capacity, obtaining second estimated residual capacity of the battery from the first moment to a third moment, determining second capacity display information corresponding to the first moment to the third moment based on the second estimated residual capacity, and determining the second capacity display information corresponding to the third moment based on the second real residual capacity of the battery after the third moment, wherein the second estimated residual capacity from the first estimated residual capacity to the third moment is reduced to the first real residual capacity according to time sequence.
6. The method of claim 5, wherein the capacity display information is a ratio between a corresponding real remaining capacity or a corresponding estimated remaining capacity and a maximum capacity of the battery;
the time difference between the second time and the first time is: reducing the first real residual capacity to be equal to or smaller than the time required by the first estimated residual capacity in a mode of reducing the cycle discharge capacity per preset cycle, wherein the cycle discharge capacity is the discharge capacity of the battery per preset cycle in a linear discharge state;
The obtaining the second estimated remaining capacity of the battery between the first time and the third time includes:
acquiring a capacity difference between the first estimated remaining capacity and the first real remaining capacity;
equally dividing the capacity difference into a preset number of compensation discharge capacities, and taking the sum of the periodic discharge capacities and the compensation discharge capacities as a unit discharge capacity;
and in the preset number of preset periods after the first time, reducing the unit discharge capacity of the first estimated residual capacity according to each preset period to obtain a second estimated residual capacity of the battery between the first time and a third time.
7. An electronic device comprising a memory and a processor coupled to each other, the processor configured to execute program instructions stored in the memory to implement the method of determining remaining battery capacity of any one of claims 1 to 3 and/or to implement the method of determining battery capacity display information of any one of claims 4 to 6.
8. A computer-readable storage medium having stored thereon program instructions, which when executed by a processor, implement the method of determining remaining battery capacity of any one of claims 1 to 3, and/or implement the method of determining battery capacity display information of any one of claims 4 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010827929.7A CN112098867B (en) | 2020-08-17 | 2020-08-17 | Method, device and medium for determining remaining capacity and capacity display information of battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010827929.7A CN112098867B (en) | 2020-08-17 | 2020-08-17 | Method, device and medium for determining remaining capacity and capacity display information of battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112098867A CN112098867A (en) | 2020-12-18 |
| CN112098867B true CN112098867B (en) | 2023-05-05 |
Family
ID=73754530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010827929.7A Active CN112098867B (en) | 2020-08-17 | 2020-08-17 | Method, device and medium for determining remaining capacity and capacity display information of battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112098867B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230953A (en) * | 2011-06-20 | 2011-11-02 | 江南大学 | Method for predicting left capacity and health status of storage battery |
| CN104145398A (en) * | 2012-02-29 | 2014-11-12 | Nec能源元器件株式会社 | Battery control system, battery pack, and electronic device |
| CN108732500A (en) * | 2017-04-18 | 2018-11-02 | 华为技术有限公司 | The method of estimation and device of cell health state |
| JP2019128346A (en) * | 2018-01-19 | 2019-08-01 | 新盛力科技股▲ふん▼有限公司 | Prediction method of battery capacity |
-
2020
- 2020-08-17 CN CN202010827929.7A patent/CN112098867B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230953A (en) * | 2011-06-20 | 2011-11-02 | 江南大学 | Method for predicting left capacity and health status of storage battery |
| CN104145398A (en) * | 2012-02-29 | 2014-11-12 | Nec能源元器件株式会社 | Battery control system, battery pack, and electronic device |
| CN108732500A (en) * | 2017-04-18 | 2018-11-02 | 华为技术有限公司 | The method of estimation and device of cell health state |
| JP2019128346A (en) * | 2018-01-19 | 2019-08-01 | 新盛力科技股▲ふん▼有限公司 | Prediction method of battery capacity |
Non-Patent Citations (2)
| Title |
|---|
| 胡银全 ; 胡云冰 ; 易文翠 ; .浅析动力电池的充放电及容量检测.中国科技信息.2009,(第08期),第142-143页. * |
| 陈戈 ; 郭昊辰 ; .基于地铁车辆蓄电池剩余容量预测方法的对比研究.电气工程.2018,(第01期),第139-140页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112098867A (en) | 2020-12-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9684356B2 (en) | Method for determining remaining service time of battery, client device and mobile terminal | |
| US9063201B2 (en) | Battery charge determination | |
| CN106461732B (en) | Method for estimating state of health of battery | |
| EP2851700B1 (en) | Method and terminal for displaying capacity of battery | |
| CN108732500A (en) | The method of estimation and device of cell health state | |
| CN109856542B (en) | Calibration method of lithium battery SOC-OCV curve cluster, SOC correction method and device | |
| CN105100504B (en) | Equipment application power consumption management method and apparatus | |
| CN104950260A (en) | Model-independent battery life and performance forecaster | |
| CN111983495A (en) | Battery pack health degree determination method and related device | |
| CN108535651A (en) | Method and apparatus for calibrating the charged state estimation counted based on coulomb | |
| US10578675B2 (en) | Estimation method for battery capacity | |
| KR20120068328A (en) | Power monitoring apparatus and power monitoring method | |
| JP2023101509A (en) | Semiconductor device and method for detecting remaining amount of battery | |
| CN115932634A (en) | Method, device, equipment and storage medium for evaluating health state of battery | |
| CN112098867B (en) | Method, device and medium for determining remaining capacity and capacity display information of battery | |
| CN105824934B (en) | The method and apparatus for searching slow node in distribution ETL | |
| CN105259415B (en) | battery internal resistance calculation method | |
| TWI522789B (en) | Electronic device and detection method of power capacity | |
| JPWO2020003402A1 (en) | Judgment device, judgment method and program | |
| US11442087B2 (en) | Adaptive power measurement accumulator with a changing sampling frequency | |
| CN111366865B (en) | Calculation method for battery health degree | |
| CN114035049A (en) | SOH precision calculation method and device and electronic equipment | |
| CN109541492B (en) | Method, device and equipment for determining residual electric quantity of power supply and readable storage medium | |
| CN115166350A (en) | Method and device for calculating demand of electric energy meter | |
| CN114355212A (en) | Battery self-discharge detection method and device, computer equipment and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |