CN116359764A - Method and device for calculating remaining charging time of battery, electronic equipment and storage medium - Google Patents

Method and device for calculating remaining charging time of battery, electronic equipment and storage medium Download PDF

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Publication number
CN116359764A
CN116359764A CN202211565327.4A CN202211565327A CN116359764A CN 116359764 A CN116359764 A CN 116359764A CN 202211565327 A CN202211565327 A CN 202211565327A CN 116359764 A CN116359764 A CN 116359764A
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value
battery
charge
battery state
temperature
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刘铁武
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Hubei Eve Power Co Ltd
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Hubei Eve Power Co Ltd
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    • 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
    • G01R31/388—Determining ampere-hour charge capacity or SoC involving voltage measurements
    • 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]
    • G01R31/371—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] with remote indication, e.g. on external chargers
    • 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]
    • G01R31/389—Measuring internal impedance, internal conductance or related variables
    • 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]
    • G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The invention discloses a method and a device for calculating remaining charging time of a battery, electronic equipment and a storage medium. The calculation method comprises the following steps: acquiring a current battery temperature value and a current battery state of charge value; if the calculated value of the battery state of charge is smaller than the target value of the battery state of charge, determining a calculated value of the charging current and a temperature rise rate according to the calculated value of the battery temperature, the calculated value of the battery state of charge and a preset corresponding relation; when the temperature rise rate does not meet the set condition, according to the calculated value of the charging current and the temperature rise rate, the calculated value of the state of charge of the battery and the theoretical residual charging time are determined in an accumulated mode; updating a battery temperature calculated value according to a step length according to a temperature rise rate, and re-determining the charging current calculated value and the temperature rise rate; and when the calculated value of the battery charge state is greater than or equal to the target battery charge state value, determining the remaining charge time of the battery according to the theoretical remaining charge time. The technical scheme of the embodiment of the invention improves the calculation accuracy and reliability of the residual charging time of the vehicle battery.

Description

Method and device for calculating remaining charging time of battery, electronic equipment and storage medium
Technical Field
The embodiment of the invention relates to the technical field of battery charging, in particular to a method and a device for calculating remaining charging time of a battery, electronic equipment and a storage medium.
Background
With the rapid development of electric automobile technology, electric automobile charging is a everywhere visible phenomenon. The display of the remaining charging time in the charging process is particularly important for users, and accurate calculation and display of the remaining charging time can provide accurate information for the users, so that the users can reasonably arrange and plan the time.
In the prior art, the remaining charging time is mostly calculated by adopting the remaining charging capacity and the charging current output by the charging pile. Further, the calculated remaining charge time is multiplied by a fixed scaling factor as the final displayed remaining charge time, taking into account the effect of the charge loss. However, during charging, the state of charge (SOC) of the battery may change continuously. As the SOC increases, the charging current decreases, and thus, the remaining charging time calculation method in the prior art may cause a deviation between the displayed remaining charging time and the actually required remaining charging time.
Disclosure of Invention
The invention provides a method and a device for calculating the remaining charging time of a battery, electronic equipment and a storage medium, so as to accurately calculate and adjust the remaining charging time of the battery in the charging process and improve the accuracy and reliability of the remaining charging time.
According to an aspect of the present invention, there is provided a method of calculating remaining charge time of a battery, including:
acquiring a current battery temperature value and a current battery state of charge value; the current battery temperature value is assigned to an initial value of a battery temperature calculated value, and the current battery state of charge value is assigned to an initial value of a battery state of charge calculated value;
if the battery state of charge calculated value is smaller than the target battery state of charge value, determining a charging current calculated value and a temperature rise rate according to the battery temperature calculated value, the battery state of charge calculated value and a preset corresponding relation; wherein the initial value of the battery temperature calculation value and the initial value of the battery state of charge calculation value are used for determining the charging current calculation value and the temperature rise rate for the first time;
when the temperature rise rate does not meet the set condition, accumulating and determining the battery state of charge calculation value according to the charging current calculation value and the temperature rise rate, and accumulating and determining theoretical residual charging time according to the temperature rise rate; comparing the battery state of charge calculation value with the target battery state of charge value, updating the battery temperature calculation value according to the temperature rise rate and step length according to the comparison result, and re-determining the charging current calculation value and the temperature rise rate;
And when the battery charge state calculated value is greater than or equal to the target battery charge state value, determining the remaining battery charge time according to the theoretical remaining charge time.
Optionally, after determining the charging current calculated value and the temperature rise rate according to the battery temperature calculated value, the battery state of charge calculated value and a preset correspondence if the battery state of charge calculated value is smaller than a target battery state of charge value, the method further includes:
and when the temperature rise rate meets a set condition, determining the theoretical remaining charging time according to the target battery state-of-charge value, the battery state-of-charge calculation value and the charging current calculation value, and assigning the battery state-of-charge calculation value as the target battery state-of-charge value.
Optionally, before the acquiring the current battery temperature value and the current battery state of charge value, the method further includes:
and judging whether to update the residual charging time of the battery according to at least one of the current battery temperature value, the current battery state of charge value and the target battery state of charge value.
Optionally, the determining whether to update the remaining battery charging time according to at least one of the current battery temperature value, the current battery state of charge value and the target battery state of charge value includes:
Detecting and judging whether the current battery temperature value, the current battery state of charge value and the target battery state of charge value change or not according to a preset time period;
and if at least one of the current battery temperature value, the current battery state of charge value and the target battery state of charge value changes, generating a judging result, and updating the residual charging time of the battery according to the judging result.
Optionally, the step-length updating the battery temperature calculation value according to the temperature rise rate includes:
when the temperature rise rate is greater than 0, the step length is 1 ℃;
when the temperature rise rate is smaller than 0, the step length is-1 ℃.
Optionally, the preset correspondence relationship includes: the first preset relation table and the second preset relation table;
the determining a charging current calculation value and a temperature rise rate according to the battery temperature calculation value, the battery state of charge calculation value and a preset corresponding relation comprises the following steps:
determining the charging current calculation value according to the battery temperature calculation value, the battery state of charge calculation value and the first preset relation table;
and determining the temperature rise rate according to the battery temperature calculated value, the charging current calculated value and the second preset relation table.
Optionally, when the calculated value of the battery state of charge is greater than or equal to the target value of the battery state of charge, determining the remaining charging time of the battery according to the theoretical remaining charging time includes:
determining a time curve descent coefficient according to the last updated battery remaining charging time and the theoretical remaining charging time determined by accumulation;
and determining the remaining charging time of the battery according to the theoretical remaining charging time and the time curve descent coefficient.
According to another aspect of the present invention, there is provided a battery remaining charge time calculation apparatus including:
the initial value acquisition module is used for acquiring a current battery temperature value and a current battery state of charge value; the current battery temperature value is assigned to an initial value of a battery temperature calculated value, and the current battery state of charge value is assigned to an initial value of a battery state of charge calculated value;
the parameter updating module is used for determining a charging current calculated value and a temperature rise rate according to the battery temperature calculated value, the battery state of charge calculated value and a preset corresponding relation if the battery state of charge calculated value is smaller than a target battery state of charge value; wherein the initial value of the battery temperature calculation value and the initial value of the battery state of charge calculation value are used for determining the charging current calculation value and the temperature rise rate for the first time;
The calculation module is used for accumulating and determining the battery state of charge calculation value according to the charging current calculation value and the temperature rise rate when the temperature rise rate does not meet the set condition, and accumulating and determining theoretical residual charging time according to the temperature rise rate; comparing the battery state of charge calculation value with the target battery state of charge value, updating the battery temperature calculation value according to the temperature rise rate and step length according to the comparison result, and re-determining the charging current calculation value and the temperature rise rate;
and the result determining module is used for determining the residual charge time of the battery according to the theoretical residual charge time when the calculated value of the charge state of the battery is larger than or equal to the target charge state value of the battery.
According to another aspect of the present invention, there is also provided an electronic apparatus including:
one or more processors;
storage means for storing one or more programs,
the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the method of calculating remaining charge time of a battery as described in the first aspect.
According to another aspect of the present invention there is also provided a storage medium containing computer executable instructions which, when executed by a computer processor, are for performing the method of battery remaining charge time calculation as described in the first aspect.
According to the battery remaining charge time calculation method provided by the embodiment of the invention, the current battery temperature value and the current battery state of charge value are respectively used as the initial value of the battery temperature calculation value and the initial value of the battery state of charge calculation value in the iterative calculation process. If the calculated value of the battery state of charge is smaller than the target value of the battery state of charge, determining a calculated value of the charging current and a temperature rise rate according to the calculated value of the battery temperature, the calculated value of the battery state of charge and a preset corresponding relation. The initial value of the battery temperature calculation value and the initial value of the battery state of charge calculation value are used to determine the charge current calculation value and the temperature rise rate for the first time. And when the temperature rise rate does not meet the set condition, determining a battery state of charge calculation value according to the charge current calculation value and the temperature rise rate accumulation, determining theoretical remaining charge time according to the temperature rise rate accumulation, and judging the magnitude relation between the battery state of charge calculation value and the target battery state of charge value. If the calculated value of the battery state of charge is still smaller than the calculated value of the target battery state of charge, updating the calculated value of the battery temperature according to the temperature rise rate, and re-determining the calculated value of the charging current and the temperature rise rate until the calculated value of the battery state of charge is larger than or equal to the calculated value of the target battery state of charge. By adopting the method for calculating the remaining charging time of the battery, the remaining charging time of the battery can be accurately calculated, the accuracy and the reliability of the displayed remaining charging time are improved, and users can reasonably arrange and plan the time conveniently.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a method for calculating remaining charge time of a battery according to an embodiment of the present invention;
fig. 2 is a flowchart of another method for calculating remaining charge time of a battery according to an embodiment of the present invention;
fig. 3 is a flowchart of another method for calculating remaining charge time of a battery according to an embodiment of the present invention;
fig. 4 is a schematic flowchart of step S310 in another method for calculating remaining battery charge time according to an embodiment of the present invention;
Fig. 5 is a flowchart of another method for calculating remaining charge time of a battery according to an embodiment of the present invention;
fig. 6 is a flowchart of still another method for calculating remaining charge time of a battery according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a battery remaining charge time calculation device according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The embodiment of the invention provides a method for calculating the remaining charging time of a battery. Fig. 1 is a flowchart of a method for calculating remaining charging time of a battery according to an embodiment of the present invention, where the method may be executed by a device for calculating remaining charging time of an electric vehicle, and specifically includes the following steps:
s110, acquiring a current battery temperature value and a current battery state of charge value; the current battery temperature value is assigned to the initial value of the battery temperature calculated value, and the current battery state of charge value is assigned to the initial value of the battery state of charge calculated value.
Specifically, the current battery state of charge value is a battery state of charge value displayed by a vehicle instrument, and the current battery temperature value is a temperature of the current battery module and can be obtained through a temperature sensor arranged on the battery module. The battery temperature calculation value is a battery temperature parameter employed in calculating the remaining charge time, and the battery state of charge calculation value is a battery state of charge parameter employed in calculating the remaining charge time.
When the current battery temperature value is obtained, a plurality of temperature points of the battery module are required to be collected, and the temperatures are compared. Because the optimal charging temperature range of the battery module is 15-45 ℃, namely when the temperature of the battery module is in the optimal charging temperature range, the charging current is larger; when the temperature of the battery module is outside the optimal temperature range, the charging current is small. Therefore, in order to ensure that the battery is charged with a larger charging current, a temperature point at which the magnitude of the charging current is limited is required to be used as the current battery temperature value when determining the current battery temperature value of the battery module. For example, if the lowest temperature of the battery module is greater than or equal to 20 ℃, determining the maximum temperature of the plurality of temperature points as the current battery temperature value; and if the lowest temperature of the battery module is less than 20 ℃, determining the minimum temperature in a plurality of temperature points as the current battery temperature value.
When the calculation of the remaining battery charging time is carried out, the current battery temperature value is obtained as an initial value of a battery temperature calculation value in the calculation process, the current battery state of charge value is obtained as an initial value of a battery state of charge calculation value in the calculation process, the subsequent calculation is carried out, and the remaining battery charging time in the remaining battery charging process is determined.
S120, if the calculated value of the battery state of charge is smaller than the calculated value of the target battery state of charge, determining a calculated value of the charging current and a temperature rise rate according to the calculated value of the battery temperature, the calculated value of the battery state of charge and a preset corresponding relation; wherein the initial value of the battery temperature calculation value and the initial value of the battery state of charge calculation value are used for determining the charging current calculation value and the temperature rise rate for the first time.
Specifically, the target battery state of charge value is a battery state of charge value actually required by the user, can be set by the user himself, and can be changed by the user during the entire charging process of the vehicle.
In the calculation process of the residual charge time, if the calculated value of the battery charge state is smaller than the target battery charge state value, the fact that the calculated residual charge time is insufficient at this time indicates that the calculated value of the battery charge state reaches the target battery charge state value is indicated. Therefore, the initial value of the battery temperature calculated value assigned by the current battery temperature value and the initial value of the battery state of charge calculated value assigned by the current battery state of charge value are adopted for first calculation, and the battery state of charge calculated value is obtained. If the calculated battery state of charge value is smaller than the target battery state of charge value, repeatedly calculating the residual charging time until the calculated battery state of charge value is greater than or equal to the target battery state of charge value, and stopping the iterative calculation.
The charging current calculation value is a charging current value employed in the remaining charging time calculation process. And according to the initial value of the battery temperature calculated value, determining the charging current value for the first time by inquiring the corresponding preset corresponding relation. And comparing the charging current value determined for the first time with the maximum charging current value output by the charging pile, and selecting a relatively smaller charging current as a charging current calculation value. The maximum charging current value output by the charging pile can be obtained through a CML message or an alternating current gun message. The CML message comprises information of the highest output voltage, the lowest output voltage, the maximum output current and the minimum output current, and is a standard value of the voltage or the current specified by the national standard. The voltage or current information included in the alternating current gun message is a voltage or current output value set by the manufacturer according to the types of different charging piles.
After the charging current calculation value is determined, the current temperature rise rate of the battery can be determined according to the corresponding preset corresponding relation. Wherein the rate of temperature rise represents the rate of change of the battery temperature.
S130, when the temperature rise rate does not meet the set condition, accumulating and determining a battery state of charge calculation value according to the charging current calculation value and the temperature rise rate, and accumulating and determining theoretical residual charging time according to the temperature rise rate; and comparing the battery state of charge calculation value with the target battery state of charge value, updating the battery temperature calculation value according to the step length according to the temperature rise rate according to the comparison result, and re-determining the charging current calculation value and the temperature rise rate.
Specifically, the set condition of the temperature rise rate is a condition that the battery temperature does not change, and the theoretical remaining charging time is the remaining charging time obtained after one calculation.
When the temperature rise rate does not meet the set condition, the battery temperature in the charging process can change, and the charging current can also change. Therefore, a battery state of charge calculation value is obtained by accumulation according to the charge current calculation value and the temperature rise rate, the theoretical remaining charge time obtained by calculation is determined according to the current temperature rise rate, the battery state of charge calculation value is compared with a target battery state of charge value, and the magnitude relation between the battery state of charge calculation value and the target battery state of charge value is judged.
If the calculated value of the battery state of charge is still smaller than the calculated value of the target battery state of charge, accumulating the step value on the basis of the calculated value of the current battery temperature according to the temperature rise rate to obtain the calculated value of the battery temperature in the next iteration process, starting to execute the step S120 again, and determining the calculated value of the charging current and the temperature rise rate again, thereby determining the calculated value of the battery state of charge and the theoretical residual charging time.
And S140, when the calculated value of the battery charge state is greater than or equal to the target battery charge state value, determining the residual charge time of the battery according to the theoretical residual charge time.
Specifically, when the calculated battery state of charge value is greater than or equal to the target battery state of charge value, the theoretical remaining charging time obtained by the last calculation is determined as the remaining charging time of the battery, and is displayed on a vehicle instrument, so that the user is informed.
According to the battery remaining charge time calculation method, the current battery temperature value and the current battery state of charge value are obtained and are respectively used as the initial value of the battery temperature calculation value and the initial value of the battery state of charge calculation value in the iterative calculation process. If the calculated value of the battery state of charge is smaller than the target value of the battery state of charge, determining a calculated value of the charging current and a temperature rise rate according to the calculated value of the battery temperature, the calculated value of the battery state of charge and a preset corresponding relation. The initial value of the battery temperature calculation value and the initial value of the battery state of charge calculation value are used to determine the charge current calculation value and the temperature rise rate for the first time. And when the temperature rise rate does not meet the set condition, determining a battery state of charge calculation value according to the charge current calculation value and the temperature rise rate accumulation, determining theoretical remaining charge time according to the temperature rise rate accumulation, and judging the magnitude relation between the battery state of charge calculation value and the target battery state of charge value. If the calculated value of the battery state of charge is still smaller than the calculated value of the target battery state of charge, updating the calculated value of the battery temperature according to the temperature rise rate, and re-determining the calculated value of the charging current and the temperature rise rate until the calculated value of the battery state of charge is larger than or equal to the calculated value of the target battery state of charge. By adopting the method for calculating the remaining charging time of the battery, the remaining charging time of the battery can be accurately calculated, the accuracy and the reliability of the displayed remaining charging time are improved, and users can reasonably arrange and plan the time conveniently.
Optionally, fig. 2 is a flowchart of another method for calculating remaining battery charge time according to an embodiment of the present invention. On the basis of the above embodiment, as shown in fig. 2, the battery remaining charge time calculation method includes:
s210, acquiring a current battery temperature value and a current battery state of charge value.
S220, if the calculated value of the battery state of charge is smaller than the target value of the battery state of charge, determining a calculated value of the charging current and a temperature rise rate according to the calculated value of the battery temperature, the calculated value of the battery state of charge and a preset corresponding relation; the initial value of the battery temperature calculated value and the initial value of the battery state of charge calculated value are used for determining the charging current calculated value and the temperature rise rate for the first time; .
And S230, when the temperature rise rate meets the set condition, determining theoretical remaining charging time according to the target battery state of charge value, the battery state of charge calculation value and the charging current calculation value, and assigning the battery state of charge calculation value as the target battery state of charge value.
Specifically, if the temperature rise rate satisfies the set condition, which indicates that the battery temperature does not change, the charging current does not change either. Therefore, according to the target battery state of charge value, the battery state of charge calculation value and the charging current calculation value, the theoretical remaining charging time can be directly calculated by adopting the following calculation formula, and the formula can be expressed as:
Theoretical remaining charge time = battery capacity x (target battery state of charge value-battery state of charge calculation value)/charge current calculation value
The battery capacity represents the total capacity of the battery in a full-charge state, and the battery capacity parameter can be obtained by a battery nameplate.
S240, when the temperature rise rate does not meet the set condition, accumulating and determining a battery state of charge calculation value according to the charging current calculation value and the temperature rise rate, and accumulating and determining theoretical residual charging time according to the temperature rise rate; and comparing the battery state of charge calculation value with the target battery state of charge value, updating the battery temperature calculation value according to the step length according to the temperature rise rate according to the comparison result, and re-determining the charging current calculation value and the temperature rise rate.
And S250, when the calculated value of the battery charge state is greater than or equal to the target battery charge state value, determining the residual charge time of the battery according to the theoretical residual charge time.
Optionally, fig. 3 is a flowchart of another method for calculating remaining battery charge time according to an embodiment of the present invention. On the basis of the above embodiments, as shown in fig. 3, the method for calculating the remaining charge time of the battery includes:
and S310, judging whether to update the residual charge time of the battery according to at least one of the current battery temperature value, the current battery charge state value and the target battery charge state value.
Specifically, after the last time of updating the remaining battery charging time, if the current battery temperature value, the current battery state of charge value and the target battery state of charge value remain unchanged, the last time of updating the displayed remaining battery charging time still has higher accuracy. If at least one of the current battery temperature value, the current battery state of charge value and the target battery state of charge value changes, the accuracy of the battery remaining charging time displayed at the moment is low, and the battery remaining charging time needs to be recalculated and updated.
S320, acquiring a current battery temperature value and a current battery state of charge value.
S330, if the calculated value of the battery state of charge is smaller than the calculated value of the target battery state of charge, determining a calculated value of the charging current and a temperature rise rate according to the calculated value of the battery temperature, the calculated value of the battery state of charge and a preset corresponding relation; wherein the initial value of the battery temperature calculation value and the initial value of the battery state of charge calculation value are used for determining the charging current calculation value and the temperature rise rate for the first time.
And S340, when the temperature rise rate meets the set condition, determining theoretical remaining charging time according to the target battery state of charge value, the battery state of charge calculation value and the charging current calculation value, and assigning the battery state of charge calculation value as the target battery state of charge value.
S350, when the temperature rise rate does not meet the set condition, accumulating and determining a battery state of charge calculation value according to the charging current calculation value and the temperature rise rate, and accumulating and determining theoretical residual charging time according to the temperature rise rate; and comparing the battery state of charge calculation value with the target battery state of charge value, updating the battery temperature calculation value according to the step length according to the temperature rise rate according to the comparison result, and re-determining the charging current calculation value and the temperature rise rate.
And S360, when the calculated value of the battery charge state is greater than or equal to the target battery charge state value, determining the residual charge time of the battery according to the theoretical residual charge time.
Optionally, fig. 4 is a schematic flowchart of step S310 in another method for calculating remaining battery charge time according to an embodiment of the present invention. On the basis of the above embodiments, as shown in fig. 4, step S310 includes:
s3101, detecting and judging whether the current battery temperature value, the current battery state of charge value and the target battery state of charge value change or not according to a preset time period.
Specifically, after updating the remaining battery charging time displayed by the vehicle instrument, detecting the current battery temperature value, the current battery state of charge value and the target battery state of charge value in a preset time period, and judging the detection result to determine whether the current battery temperature value, the current battery state of charge value and the target battery state of charge value change. By way of example, the preset time period may be 1 second, without limitation.
S3102, if at least one of the current battery temperature value, the current battery state of charge value and the target battery state of charge value is changed, a judgment result is generated, and the remaining battery charging time is updated according to the judgment result.
Specifically, during the charging of the vehicle battery, the current battery state of charge value gradually increases, and the current battery temperature value also changes. When the current battery temperature value or the current battery state of charge value is detected to change in a preset time period, the accuracy of the residual charging time displayed by the instrument at the moment is judged to be low, a judgment result is generated, and the residual charging time of the battery is updated again.
In addition, the target battery state of charge value can be set by the user according to the actual situation, so that the target battery state of charge value can also change in the process of charging the vehicle battery. And when the change of the charge state value of the target battery is detected, generating a judging result. Similarly, according to the determination result, it is necessary to recalculate the remaining battery charging time and display the updated remaining battery charging time to the meter.
Optionally, on the basis of the above embodiments, updating the battery temperature calculation value according to the temperature rise rate in steps includes:
When the temperature rise rate is greater than 0, the step length is 1 ℃;
when the temperature rise rate is less than 0, the step length is-1 ℃.
Specifically, after the theoretical remaining charging time of the iterative computation is completed, the battery state of charge calculation value is judged to be smaller than the target battery state of charge value, and then the next iterative computation is needed to be continued. At this time, the battery temperature calculation value parameter in the next iterative calculation process is updated according to a certain step length according to the temperature rise rate adopted in the current iterative calculation process. Illustratively, if the temperature rise rate adopted in the current iteration process is greater than 0, the calculated value of the battery temperature adopted in the next iteration process is accumulated by 1 ℃, namely, the calculated value is increased by 1 ℃; if the temperature rise rate adopted in the iteration process is smaller than 0, the calculated value of the battery temperature adopted in the next iteration process is accumulated to minus 1 ℃, namely, the temperature is reduced by 1 ℃. Table 1 is a table of the rate of rise of temperature provided in this example, as shown in table 1,
TABLE 1 temperature rise rate meter
Figure SMS_1
Illustratively, taking the battery temperature calculated in this iteration as 22 ℃ and the charging current as 1.2C as an example, it can be seen from the above table 1 that the temperature rise rate in this iteration process is 95s/°c. Since the rate of temperature rise is greater than 0, the calculated battery temperature for the next iteration is 23 ℃.
It should be noted that, as shown in table 1, when the temperature rise rate takes a value of 1800, it indicates that the temperature rise rate satisfies the set condition, and the temperature will not change; when the temperature rise rate is not equal to 1800, the temperature rise rate does not meet the set condition. Wherein 1800 is only one sign that the temperature rise rate satisfies the setting condition, which has no practical meaning, and other numbers can be set as the setting condition of the temperature rise rate, for example: 3600.
optionally, fig. 5 is a flowchart of another method for calculating remaining battery charge time according to an embodiment of the present invention. On the basis of the above embodiments, the preset correspondence relationship includes: the first preset relation table and the second preset relation table; as shown in fig. 5, determining the charging current calculation value and the temperature rise rate according to the battery temperature calculation value, the battery state of charge calculation value and the preset correspondence relation includes:
s1201, determining a charging current calculation value according to the battery temperature calculation value, the battery state of charge calculation value, and the first preset relationship table.
Specifically, the first preset relationship table is a two-dimensional table representing a relationship among the battery temperature calculated value, the battery state of charge calculated value, and the charging current calculated value. When the battery temperature calculated value and the battery state of charge calculated value are determined, a charging current calculated value can be correspondingly determined through a first preset relation table.
S1202, determining the temperature rise rate according to the battery temperature calculated value, the charging current calculated value and the second preset relation table.
Specifically, the second preset relationship table is a two-dimensional table representing the relationship among the battery temperature calculated value, the charging current calculated value, and the temperature rise rate. After the battery temperature calculation value is determined, a temperature rise rate can be correspondingly determined according to the charging current calculation value determined in step S1201 and the second preset relationship table.
Optionally, fig. 6 is a flowchart of another method for calculating remaining battery charge time according to an embodiment of the present invention. On the basis of the above embodiments, as shown in fig. 6, determining the remaining charging time of the battery according to the theoretical remaining charging time includes:
and S1401, determining a time curve descent coefficient according to the last updated battery residual charging time and the theoretical residual charging time determined by accumulation.
Specifically, the time curve decreasing coefficient is a coefficient for processing the last updated remaining charging time of the battery, so as to smoothly display the theoretical remaining charging time calculated this time. After the theoretical remaining charging time is calculated, whether the remaining charging time is calculated for the first time is judged. If yes, the theoretical remaining charging time obtained through calculation is the remaining charging time in the initial stage of the charging process, and the theoretical remaining charging time is taken as the displayed remaining charging time of the battery. And making a difference between the last displayed battery remaining charging time and the theoretical remaining charging time obtained through the iterative calculation, and determining a time curve descent coefficient according to the difference.
And S1402, determining the remaining charging time of the battery according to the theoretical remaining charging time and the time curve descent coefficient.
Specifically, when at least one of the current battery temperature value, the current battery state of charge value and the target battery state of charge value is detected to change in the charging process, the last displayed battery remaining charging time is processed according to the time curve descent coefficient by taking the theoretical remaining charging time obtained by the iterative calculation as a reference, so that the battery remaining charging time is determined, the last displayed battery remaining charging time is smoothly changed to the battery remaining charging time, jump of the battery remaining charging time in the updating display process is avoided, and the user's look and feel experience is improved.
The embodiment of the invention also provides a device for calculating the remaining charging time of the battery. Fig. 7 is a schematic structural diagram of a device for calculating remaining charge time of a battery according to an embodiment of the present invention. As shown in fig. 7, the remaining battery charge time calculation device 001 includes:
an initial value obtaining module 100, configured to obtain a current battery temperature value and a current battery state of charge value; wherein, the current battery temperature value is assigned to the initial value of the battery temperature calculated value, and the current battery state of charge value is assigned to the initial value of the battery state of charge calculated value;
The parameter updating module 200 is configured to determine a charging current calculation value and a temperature rise rate according to the battery temperature calculation value, the battery state of charge calculation value, and a preset correspondence if the battery state of charge calculation value is smaller than the target battery state of charge value; the initial value of the battery temperature calculated value and the initial value of the battery state of charge calculated value are used for determining the charging current calculated value and the temperature rise rate for the first time;
the calculation module 300 is configured to determine, when the temperature rise rate does not meet the set condition, a calculated value of a state of charge of the battery according to the calculated value of the charging current and the temperature rise rate in an accumulated manner, and determine a theoretical remaining charging time according to the accumulated temperature rise rate; comparing the battery state of charge calculation value with the target battery state of charge value, updating the battery temperature calculation value according to the step length according to the temperature rise rate according to the comparison result, and re-determining the charging current calculation value and the temperature rise rate;
the result determining module 400 is configured to determine the remaining battery charging time according to the theoretical remaining charging time when the calculated battery state of charge value is greater than or equal to the target battery state of charge value.
The battery remaining charge time calculating device provided by the embodiment of the invention can execute the battery remaining charge time calculating method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the executing method.
The embodiment of the invention also provides electronic equipment. Fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present invention. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device may also represent various forms of mobile devices, such as personal digital assistants, cellular telephones, smartphones, and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.
As shown in fig. 8, the electronic device 10 includes at least one processor 11, and a memory, such as a Read Only Memory (ROM) 12, a Random Access Memory (RAM) 13, etc., communicatively connected to the at least one processor 11, in which the memory stores a computer program executable by the at least one processor, and the processor 11 may perform various appropriate actions and processes according to the computer program stored in the Read Only Memory (ROM) 12 or the computer program loaded from the storage unit 18 into the Random Access Memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 may also be stored. The processor 11, the ROM 12 and the RAM 13 are connected to each other via a bus 14. An input/output (I/O) interface 15 is also connected to bus 14.
Various components in the electronic device 10 are connected to the I/O interface 15, including: an input unit 16 such as a keyboard, a mouse, etc.; an output unit 17 such as various types of displays, speakers, and the like; a storage unit 18 such as a magnetic disk, an optical disk, or the like; and a communication unit 19 such as a network card, modem, wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication networks.
The processor 11 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, digital Signal Processors (DSPs), and any suitable processor, controller, microcontroller, etc. The processor 11 performs the respective methods and processes described above, such as a battery remaining charge time calculation method.
In some embodiments, the battery remaining charge time calculation method may be implemented as a computer program tangibly embodied on a computer-readable storage medium, such as the storage unit 18. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device 10 via the ROM 12 and/or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the battery remaining charge time calculation method described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to perform the battery remaining charge time calculation method in any other suitable way (e.g., by means of firmware).
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On Chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may perform and/or interpret the battery remaining charge time calculation method on a programmable system including at least one programmable processor, which may be a special purpose or general purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.
In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube), LCD (liquid crystal display) monitor or OLED (organic light emitting diode display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which a user can provide input to the electronic device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.
The computing system may include clients and servers. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical hosts and VPS service are overcome.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims (10)

1. A method for calculating remaining charge time of a battery, comprising:
acquiring a current battery temperature value and a current battery state of charge value; the current battery temperature value is assigned to an initial value of a battery temperature calculated value, and the current battery state of charge value is assigned to an initial value of a battery state of charge calculated value;
if the battery state of charge calculated value is smaller than the target battery state of charge value, determining a charging current calculated value and a temperature rise rate according to the battery temperature calculated value, the battery state of charge calculated value and a preset corresponding relation; wherein the initial value of the battery temperature calculation value and the initial value of the battery state of charge calculation value are used for determining the charging current calculation value and the temperature rise rate for the first time;
when the temperature rise rate does not meet the set condition, accumulating and determining the battery state of charge calculation value according to the charging current calculation value and the temperature rise rate, and accumulating and determining theoretical residual charging time according to the temperature rise rate; comparing the battery state of charge calculation value with the target battery state of charge value, updating the battery temperature calculation value according to the temperature rise rate and step length according to the comparison result, and re-determining the charging current calculation value and the temperature rise rate;
And when the battery charge state calculated value is greater than or equal to the target battery charge state value, determining the remaining battery charge time according to the theoretical remaining charge time.
2. The method according to claim 1, wherein after determining a charge current calculation value and a temperature rise rate according to the battery temperature calculation value, the battery state of charge calculation value, and a preset correspondence if the battery state of charge calculation value is smaller than a target battery state of charge value, further comprising:
and when the temperature rise rate meets a set condition, determining the theoretical remaining charging time according to the target battery state-of-charge value, the battery state-of-charge calculation value and the charging current calculation value, and assigning the battery state-of-charge calculation value as the target battery state-of-charge value.
3. The method of claim 2, further comprising, prior to said obtaining the current battery temperature value and the current battery state of charge value:
and judging whether to update the residual charging time of the battery according to at least one of the current battery temperature value, the current battery state of charge value and the target battery state of charge value.
4. The method of claim 3, wherein determining whether to update the remaining battery charge time based on at least one of the current battery temperature value, the current battery state of charge value, and the target battery state of charge value comprises:
detecting and judging whether the current battery temperature value, the current battery state of charge value and the target battery state of charge value change or not according to a preset time period;
and if at least one of the current battery temperature value, the current battery state of charge value and the target battery state of charge value changes, generating a judging result, and updating the residual charging time of the battery according to the judging result.
5. The method according to any one of claims 1 to 4, characterized in that the step-wise updating of the battery temperature calculation value in accordance with the temperature rise rate includes:
when the temperature rise rate is greater than 0, the step length is 1 ℃;
when the temperature rise rate is smaller than 0, the step length is-1 ℃.
6. The battery remaining charge time calculation method according to any one of claims 1 to 4, wherein the preset correspondence relationship includes: the first preset relation table and the second preset relation table;
The determining a charging current calculation value and a temperature rise rate according to the battery temperature calculation value, the battery state of charge calculation value and a preset corresponding relation comprises the following steps:
determining the charging current calculation value according to the battery temperature calculation value, the battery state of charge calculation value and the first preset relation table;
and determining the temperature rise rate according to the battery temperature calculated value, the charging current calculated value and the second preset relation table.
7. The method according to any one of claims 1 to 4, characterized in that the determining the remaining charge time of the battery from the theoretical remaining charge time includes:
determining a time curve descent coefficient according to the last updated battery remaining charging time and the theoretical remaining charging time determined by accumulation;
and determining the remaining charging time of the battery according to the theoretical remaining charging time and the time curve descent coefficient.
8. A battery remaining charge time calculation apparatus, comprising:
the initial value acquisition module is used for acquiring a current battery temperature value and a current battery state of charge value; the current battery temperature value is assigned to an initial value of a battery temperature calculated value, and the current battery state of charge value is assigned to an initial value of a battery state of charge calculated value;
The parameter updating module is used for determining a charging current calculated value and a temperature rise rate according to the battery temperature calculated value, the battery state of charge calculated value and a preset corresponding relation if the battery state of charge calculated value is smaller than a target battery state of charge value; wherein the initial value of the battery temperature calculation value and the initial value of the battery state of charge calculation value are used for determining the charging current calculation value and the temperature rise rate for the first time;
the calculation module is used for accumulating and determining the battery state of charge calculation value according to the charging current calculation value and the temperature rise rate when the temperature rise rate does not meet the set condition, and accumulating and determining theoretical residual charging time according to the temperature rise rate; comparing the battery state of charge calculation value with the target battery state of charge value, updating the battery temperature calculation value according to the temperature rise rate and step length according to the comparison result, and re-determining the charging current calculation value and the temperature rise rate;
and the result determining module is used for determining the residual charge time of the battery according to the theoretical residual charge time when the calculated value of the charge state of the battery is larger than or equal to the target charge state value of the battery.
9. An electronic device, the electronic device comprising:
one or more processors;
storage means for storing one or more programs,
the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the method of battery remaining charge time calculation of any of claims 1-7.
10. A storage medium containing computer executable instructions for performing the battery remaining charge time calculation method of any one of claims 1-7 when executed by a computer processor.
CN202211565327.4A 2022-12-07 2022-12-07 Method and device for calculating remaining charging time of battery, electronic equipment and storage medium Pending CN116359764A (en)

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