CN109466372B - Charging remaining time calculation method and device and storage medium - Google Patents

Charging remaining time calculation method and device and storage medium Download PDF

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Publication number
CN109466372B
CN109466372B CN201811382546.2A CN201811382546A CN109466372B CN 109466372 B CN109466372 B CN 109466372B CN 201811382546 A CN201811382546 A CN 201811382546A CN 109466372 B CN109466372 B CN 109466372B
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current
charging
charged
temperature rise
temperature
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CN109466372A (en
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毕冰冰
卢磊
姜辛
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Shanghai Yuancheng Automobile Technology Co Ltd
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Shanghai Yuancheng Automobile Technology Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/12—Recording operating variables ; Monitoring of operating variables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/545—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/547—Voltage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/549—Current
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2260/00—Operating Modes
    • B60L2260/40—Control modes
    • B60L2260/50—Control modes by future state prediction
    • 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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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The application provides a charging remaining time calculation method, a device and a storage medium, wherein the method comprises the following steps: reading the current temperature, the monomer voltage and the current residual capacity of the equipment to be charged; determining the current charging current grade of the equipment to be charged according to the current temperature and the monomer voltage; calculating first charging time of the equipment to be charged under the current charging level according to the current residual electric quantity and the current charging current level, and estimating a first predicted temperature rise value of the equipment to be charged according to the first charging time, a fitting function of the first charging time and the temperature rise of the equipment to be charged; determining a first temperature rise value according to the current temperature of the equipment to be charged and a temperature point threshold value of the current charging current grade, wherein the temperature point threshold value is a temperature point for triggering equipment to reduce current; judging whether the first predicted temperature rise value exceeds a first temperature rise value or not; if not, the charging remaining time of the device to be charged is calculated by adding the trickle charging time at the present charging current level to the first charging time.

Description

Charging remaining time calculation method and device and storage medium
Technical Field
The application relates to the technical field of automobile charging, in particular to a charging remaining time calculation method, a charging remaining time calculation device and a storage medium.
Background
It is necessary for a user to estimate a battery charging time of an electric vehicle. If the estimation of the battery charging time of the electric vehicle is accurate, a user can do other things in the charging time period of the electric vehicle, and when the charging time of the electric vehicle is about to reach the estimated time, the user arrives at a vehicle charging place, and the vehicle is extracted after the charging of the vehicle is judged to be finished. Therefore, better convenience can be provided for the driver of the electric vehicle, and the user experience can be greatly improved.
However, the current estimation of the charging remaining time of the electric vehicle generally has the problem of inaccuracy.
Content of application
The application aims to provide a charging remaining time calculation method, a charging remaining time calculation device and a storage medium, which are used for solving the problem of inaccurate charging remaining time.
In order to achieve the above object, the present application provides the following technical solutions:
in a first aspect: the application provides a charging remaining time calculation method, which comprises the following steps:
reading the current temperature, the monomer voltage and the current residual capacity of the equipment to be charged;
determining the current charging current grade of the equipment to be charged according to the current temperature and the single voltage;
calculating first charging time of the equipment to be charged under the current charging level according to the current residual electric quantity and the current charging current level, and estimating a first expected temperature rise value of the equipment to be charged according to the first charging time, a fitting function of the first charging time and the temperature rise of the equipment to be charged;
determining a first temperature rise value according to the current temperature of the equipment to be charged and a temperature point threshold value of the current charging current grade, wherein the temperature point threshold value is a temperature point for triggering equipment to reduce current;
judging whether the first predicted temperature rise value exceeds the first temperature rise value;
and if not, calculating the charging residual time of the equipment to be charged by adding the trickle charging time at the current charging current level to the first charging time.
According to the method designed by the scheme, through comparison of the first predicted temperature rise value and the first temperature rise value of the equipment to be charged, if the first predicted temperature rise value and the first temperature rise value do not exceed the first temperature rise value, the equipment to be charged can be fully charged according to the current charging grade, and the charging remaining time is calculated by considering the influence of the temperature, so that the charging remaining time of the equipment to be charged is more accurate, the display of the final charging time is more accurate, jumping cannot occur, and the user experience is influenced.
In an optional implementation manner of the first aspect, after the determining whether the first expected temperature-rise value exceeds the first temperature-rise value, the method further includes:
if the charging current level of the equipment to be charged is higher than the current-reducing temperature, when the temperature of the equipment to be charged after charging under the current charging current level reaches the current-reducing temperature point, the charging current level is reduced, and then the next charging current level is entered;
calculating second charging time of the equipment to be charged under the next charging level according to the residual electric quantity at the next charging current level and the next charging current level, and determining a second predicted temperature rise value of the equipment to be charged according to the second charging time, the second charging time and a fitting function of the temperature rise of the equipment to be charged;
determining a second temperature rise value according to the temperature rise from the current flow reduction temperature point to the next flow reduction temperature point;
judging whether the second predicted temperature rise value exceeds the second temperature rise value;
and if not, calculating the charging residual time of the equipment to be charged by the second charging time and the trickle charging time at the next charging current level.
According to the method designed by the scheme, if the temperature point of the equipment needing the current reduction charging is reached, the current level is reduced for charging, the equipment to be charged can be fully charged, and the predicted temperature rise under each charging level can not reach the standard temperature rise value at the moment, so that the charging residual time of the equipment to be charged is more accurate.
In an optional implementation manner of the first aspect, the reading the current temperature, the cell voltage, and the current remaining capacity of the device to be charged includes: and periodically reading the current temperature, the cell voltage and the current remaining capacity of the equipment to be charged.
According to the method designed by the scheme, the charging time is updated by periodically reading the current temperature, the cell voltage and the residual charging electric quantity, so that the accuracy of the charging residual time is improved, a user can know the charging process and master the charging progress, and the user experience is greatly enhanced.
In an optional implementation manner of the first aspect, estimating, according to the current remaining capacity and the current charging current level, a first charging time of the device to be charged at the current charging level includes: according to a first formula QCharging of electricity＝Q-QRemainder of-QTrickle flowDetermining the electric quantity to be charged according to a second formula T1＝QCharging of electricity/I1Determining a first charging time at a current charging level, wherein QCharging of electricityTo representThe amount of power to be charged, Q representing the total power of the device to be charged, QRemainder ofRepresents the current remaining capacity, QTrickle flowIndicating the trickle charge capacity at the current level, T1Indicating a first charging time, I, at the current charging level1A current magnitude representing a current level of the charging current.
In an optional implementation manner of the first aspect, the estimating a first expected temperature rise value of the device to be charged according to the first charging time and a fitted function of the first charging time and the temperature rise of the device to be charged includes: according to T1And T1And determining a first predicted temperature rise value of the device to be charged by using the fitting function y of the temperature rise as kx + b, wherein y represents the first predicted temperature rise value, and x represents the first charging time T1And k and b represent coefficients.
In an optional implementation manner of the first aspect, the determining a first temperature increase value according to a current temperature of the device to be charged and a current temperature point reaching the current drop; the method comprises the following steps: according to a third formula TTemperature rise 1＝TDown flow-TAt presentWherein T isTemperature rise 1Represents a first temperature rise value, TDown flowIndicating that the temperature point of down-flow, T, is currently reachedAt presentRepresenting the current temperature value.
In an optional implementation of the first aspect, after the calculating the charge remaining time of the device to be charged by the first charge time plus the trickle charge time at the present charge current level, the method further comprises: and calculating the charging electric charge of the equipment to be charged according to the charging remaining time and the unit price charged according to the charging time.
According to the method designed by the scheme, the charging electric charge can be obtained according to the charging remaining time, so that the charging electric charge of the automobile is transparent and public, and a customer can know the charging electric charge calculation process at any time.
In a second aspect: the application provides a charging remaining time calculation device, the device includes:
the reading module is used for reading the current temperature, the monomer voltage and the current residual capacity of the equipment to be charged;
the determining module is used for determining the current charging current grade of the equipment to be charged according to the current temperature and the single voltage read by the reading module;
the calculation module is used for calculating first charging time of the equipment to be charged under the current charging level according to the current residual capacity and the current charging current level, and estimating a first predicted temperature rise value of the equipment to be charged according to the first charging time, a fitting function of the first charging time and the temperature rise of the equipment to be charged; determining a first temperature rise value according to the current temperature of the equipment to be charged and a temperature point threshold value of the current charging current grade, wherein the temperature point threshold value is a temperature point for triggering equipment to reduce current;
the judging module is used for judging whether the first predicted temperature rise value exceeds the first temperature rise value or not;
the calculation module is further configured to calculate the remaining charging time of the device to be charged by adding the trickle charging time at the current charging current level to the first charging time when the determination module determines that the first expected temperature rise value does not exceed the first temperature rise value.
According to the device designed by the scheme, through comparison of the first predicted temperature rise value and the first temperature rise value of the equipment to be charged, if the first temperature rise value is not exceeded, the current charging grade can be full of the equipment to be charged, and the charging remaining time is calculated by considering the influence of the temperature, so that the charging remaining time of the equipment to be charged is more accurate, the display of the final charging time is more accurate, and the jumping cannot occur, so that the user experience is influenced.
In an optional implementation manner of the second aspect, the apparatus further includes an execution module, after the determination module determines that the first predicted temperature rise value exceeds the first temperature rise value, executing current level reduction and entering a next charging current level;
the calculation module is further configured to calculate a second charging time of the device to be charged in the next charging level according to the remaining power at the next charging current level and the next charging current level, and determine a second expected temperature rise value of the device to be charged according to the second charging time, and a fitting function of the temperature rise of the device to be charged; determining a second temperature rise value according to the temperature rise from the current flow reduction temperature point to the next flow reduction temperature point;
the judging module is further configured to judge whether the second predicted temperature rise value exceeds the second temperature rise value;
the calculation module is further configured to calculate the remaining charging time of the device to be charged according to a second charging time and a trickle charging time at a next charging current level when the determination module determines that the second expected temperature rise value does not exceed the second temperature rise value.
According to the device designed by the scheme, if the temperature point required to be subjected to current reduction charging is reached, the current level is reduced to charge, the equipment to be charged can be fully charged, and the temperature rise expected under each charging level can not reach the standard temperature rise value at the moment, so that the charging residual time of the equipment to be charged is more accurate.
In a third aspect: the present application provides a computing device comprising: the device comprises a processor, a memory and a communication module, wherein the memory and the communication module are respectively connected with the processor, the memory stores machine readable instructions executable by the processor, and the communication module is used for carrying out communication transmission with an external device; when the computing device is running, the processor executes the machine readable instructions to perform the method of the first aspect, any optional implementation of the first aspect.
In a fourth aspect: the present application provides a computer readable storage medium having stored thereon a computer program for performing the method of the first aspect, any of the alternative implementations of the first aspect, when the computer program is executed by a processor.
In a fifth aspect: the present application provides a computer program product which, when run on a computer, causes the computer to perform the method of the first aspect, any of the alternative implementations of the first aspect.
The beneficial effect of this application includes: according to the charging remaining time calculation method, the charging remaining time calculation device and the storage medium, through comparison of the first predicted temperature rise value and the first temperature rise value of the equipment to be charged, if the first predicted temperature rise value and the first temperature rise value do not exceed the first temperature rise value, the equipment to be charged can be fully charged according to the current charging grade, the charging remaining time is calculated by considering the influence of the temperature, the charging remaining time of the equipment to be charged is more accurate, the display of the final charging time is more accurate, jumping cannot occur, and the user experience is influenced.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the embodiments of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts. The foregoing and other objects, features and advantages of the application will be apparent from the accompanying drawings. Like reference numerals refer to like parts throughout the drawings. The drawings are not intended to be to scale as practical, emphasis instead being placed upon illustrating the subject matter of the present application.
Fig. 1 is a first flowchart of a charging remaining time calculation method according to a first embodiment of the present application;
fig. 2 is a second flowchart of a charging remaining time calculation method according to a first embodiment of the present application;
fig. 3 is a schematic structural diagram of a charging remaining time calculation apparatus according to a second embodiment of the present application;
fig. 4 is a schematic structural diagram of a computing device according to a third embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application. Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.
In the description of the present application, it is to be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
First embodiment
As shown in fig. 1, the present application provides a charging remaining time calculation method, including:
step 101: and reading the current temperature, the cell voltage and the current remaining capacity of the device to be charged, and turning to step 102.
For step 101, it should be noted that the device to be charged includes various large types of batteries, battery packs, and the like used in the electric vehicle at the present stage.
Step 102: and determining the current charging current level of the equipment to be charged according to the current temperature and the single voltage, and turning to step 103.
Step 103: and calculating first charging time of the equipment to be charged under the current charging current level according to the current residual capacity and the current charging current level, estimating a first expected temperature rise value of the equipment to be charged according to the first charging time, a fitting function of the first charging time and the temperature rise of the equipment to be charged, and turning to the step 104.
Step 104: and determining a first temperature rise value according to the current temperature of the equipment to be charged and a temperature point threshold value of the current charging current grade, wherein the temperature point threshold value is a temperature point triggering equipment to flow down, and turning to the step 105.
Step 105: it is determined whether the first predicted temperature rise value exceeds the first temperature rise value and the process proceeds to step 106.
Step 106: if not, the charging remaining time of the device to be charged is calculated by adding the trickle charging time at the present charging current level to the first charging time.
According to the method designed by the scheme, through comparison of the first predicted temperature rise value and the first temperature rise value of the equipment to be charged, if the first predicted temperature rise value and the first temperature rise value do not exceed the first temperature rise value, the equipment to be charged can be fully charged according to the current charging grade, and the charging remaining time is calculated by considering the influence of the temperature, so that the charging remaining time of the equipment to be charged is more accurate, the display of the final charging time is more accurate, jumping cannot occur, and the user experience is influenced.
In step 101, it should be noted that since the cell voltage is also related to the current temperature, it is necessary to make a common determination based on the current temperature and the cell voltage.
Optionally, step 101 further includes: and periodically reading the current temperature, the cell voltage and the current remaining capacity of the equipment to be charged.
According to the method designed by the scheme, the charging time is updated by periodically reading the current temperature, the cell voltage and the residual charging electric quantity, so that the accuracy of the charging residual time is improved, a user can know the charging process and master the charging progress, and the user experience is greatly enhanced.
For step 102, it should be noted that the number of the charging current levels in the present application should not be a condition for limiting the present application, and in a specific embodiment, we exemplify 1c, 0.5c, 0.25c, 0.125c, 10A, and 5 charging current levels in sequence. The charging Map table is inquired according to the current temperature and the cell voltage to obtain the current grade required to be charged currently, and the ranges of the temperature and the cell voltage entering different charging stages are different due to different battery cell materials of each vehicle.
Optionally, as for the first charging time of the device to be charged under the current charging level, which is estimated according to the current remaining power and the current charging current level in step 103, specifically, the first charging time may be:
according to a first formula QCharging of electricity＝Q-QRemainder of-QTrickle flowDetermining the electric quantity to be charged according to a second formula T1＝QCharging of electricity/I1Determining a first charging time at a current charging level, wherein QCharging of electricityRepresenting the amount of power to be charged, Q representing the total amount of power of the device to be charged, being a known quantity and obtainable by reading hardware parameters of the device to be charged, etc., QRemainder ofRepresenting the current remaining capacity, obtained by reading, as a known quantity, QTrickle flowRepresents the trickle charging electric quantity under the current level, the trickle charging electric quantities in different stages are different and can be obtained by early calibration1Indicating a first charging time, I, at the current charging level1The current magnitude, which represents the current level of the current charge, is determined according to the current levels of the different phases.
Estimating a first expected temperature rise value of the device to be charged according to the first charging time and the fitting function of the first charging time and the temperature rise of the device to be charged in the step 103; it can be specifically: according to the above T1And T1And determining a first predicted temperature rise value of the device to be charged by using the fitting function y of the temperature rise as kx + b, wherein y represents the first predicted temperature rise value, and x represents the first charging time T1K and b represent coefficients, which are known quantities, and the first expected temperature rise value y can be calculated by substituting the first charging time calculated as described above into the fitting function y ═ kx + b.
Optionally, for the step 104, determining a first temperature increase value according to the current temperature of the device to be charged and the current temperature point reaching the current reduced current, specifically: according to a third formula TTemperature rise 1＝TDown flow-TAt presentWherein T isTemperature rise 1Represents a first temperature rise value, TDown flowIndicating that the temperature point of down-flow, T, is currently reachedAt presentIndicating the current temperature value, which is to be explained hereWhat is meant is that the down-flow temperature point is different for different charging current levels.
The trickle charge time for step 106 may be obtained by calibration at an earlier stage.
For the above steps, the method may specifically be a first scenario: when a device to be charged is charged, reading the current temperature, the monomer voltage and the residual electric quantity of the device to be charged, determining that the device to be charged enters a stage with the charging grade of 1c according to the current temperature and the monomer voltage, and passing through QCharging of electricity＝Q-QRemainder of-QTrickle flowCalculating the electric quantity to be charged by T1＝QCharging of electricity/I1cCalculating its first charging time according to T1And fitting the function y to kx + b to obtain a first predicted temperature rise y thereof according to TTemperature rise 1＝TDown flow-TAt presentObtaining a first temperature rise value (namely a theoretical temperature rise value), and judging whether y is larger than T or notTemperature rise 1If not, the charging time is equal to T1Plus a trickle charge time.
Optionally, as shown in fig. 2, after determining whether the first predicted temperature-rise value exceeds the first temperature-rise value in step 105, the method further includes step 107: if yes, the charging current level is decreased and then the next charging current level is entered, and the step 108 is turned to.
Step 108: and estimating second charging time of the equipment to be charged in the next charging level according to the remaining capacity in the next charging current level and the next charging current level, determining a second predicted temperature rise value of the equipment to be charged according to the second charging time, a fitting function of the second charging time and the temperature rise of the equipment to be charged, and turning to the step 109.
Step 109: and determining a second temperature rise value according to the temperature rise from the current flow reduction temperature point to the next flow reduction temperature point, and turning to the step 110.
Step 110: and judging whether the second predicted temperature rise value exceeds the second temperature rise value or not, and turning to step 111.
Step 111: and if not, calculating the charging residual time of the equipment to be charged by the second charging time and the trickle charging time at the next charging current level.
Specifically, the above steps may specifically be a second scenario: according to T in the first sceneTemperature rise1＝TDown flow-TAt presentObtaining a first temperature rise value (namely a theoretical temperature rise value), and judging whether y is larger than T or notTemperature rise 1When y is greater than TTemperature rise 1Then, entering a 0.5c charging current level stage, estimating a second charging time at the 0.5c charging level according to the remaining electric quantity after charging at the 1c charging level and the charging current level of 0.5c, determining a second predicted temperature rise value y2 according to the second charging time and a fitting function y ═ kx + b, determining a second temperature rise value according to the current temperature and a current drop temperature point at the 0.5c charging level, judging whether y2 is greater than the second temperature rise value, and if not, the charging remaining time is equal to the second charging time plus the trickle charging time at the 0.5c charging current level.
If it is determined that y2 is not greater than the second temperature rise value, the following 0.25c, 0.125c and 10A are the same as the above case, and it should be noted here that if the charging current is reduced to a low current stage, such as the 10A charging current level stage, the charging current is inherently small, so that there is no trickle charge amount or trickle charge time in calculating the remaining charge amount and the remaining charge time, compared to the previous case.
Optionally, after calculating the charging remaining time of the device to be charged by adding the trickle-charging time at the current charging current level to the first charging time in step 106, the method further includes: and calculating the charging electric charge of the equipment to be charged according to the charging remaining time and the unit price charged according to the charging time.
According to the method designed by the scheme, the charging electric charge can be obtained according to the charging remaining time, so that the charging electric charge of the automobile is transparent and public, and a customer can know the charging electric charge calculation process at any time.
Second embodiment
As shown in fig. 3, the present application provides a charging remaining time calculation apparatus including:
the reading module 201 is configured to read a current temperature, a cell voltage, and a current remaining power of a device to be charged;
a determining module 202, configured to determine a current charging current level of the device to be charged according to the current temperature and the cell voltage read by the reading module 201;
the calculation module 203 is configured to estimate a first charging time of the device to be charged at the current charging level according to the current remaining power and the current charging current level, and estimate a first expected temperature rise value of the device to be charged according to the first charging time, a fitting function of the first charging time and the temperature rise of the device to be charged; determining a first temperature rise value according to the current temperature of the equipment to be charged and the temperature point reaching the current reduction under the current charging current level;
a determining module 204, configured to determine whether the first predicted temperature rise value exceeds a first temperature rise value;
the calculating module 203 is further configured to calculate the charging remaining time of the device to be charged by adding the trickle charge time at the current charging current level to the first charge time when the determining module 204 determines that the first expected temperature rise value does not exceed the first temperature rise value.
According to the device designed by the scheme, through comparison of the first predicted temperature rise value and the first temperature rise value of the equipment to be charged, if the first temperature rise value is not exceeded, the current charging grade can be full of the equipment to be charged, and the charging remaining time is calculated by considering the influence of the temperature, so that the charging remaining time of the equipment to be charged is more accurate, the display of the final charging time is more accurate, and the jumping cannot occur, so that the user experience is influenced.
In an optional implementation manner of this embodiment, the apparatus further includes an executing module 205, after the determining module 204 determines that the first predicted temperature-rise value exceeds the first temperature-rise value, executing current level reduction and entering a next charging current level;
the calculating module 203 is further configured to estimate a second charging time of the device to be charged in the next charging level according to the remaining power at the next charging current level and the next charging current level, and determine a second expected temperature rise value of the device to be charged according to the second charging time, a fitting function of the second charging time and the temperature rise of the device to be charged; determining a second temperature rise value according to the temperature rise from the current flow reduction temperature point to the next flow reduction temperature point;
the determining module 204 is further configured to determine whether the second predicted temperature rise value exceeds a second temperature rise value;
the calculating module 203 is further configured to calculate the remaining charging time of the device to be charged according to the second charging time and the trickle charging time at the next charging current level when the determining module 204 determines that the second expected temperature rise value does not exceed the second temperature rise value.
According to the device designed by the scheme, if the temperature point required to be subjected to current reduction charging is reached, the current level is reduced to charge, the equipment to be charged can be fully charged, and the temperature rise expected under each charging level can not reach the standard temperature rise value at the moment, so that the charging residual time of the equipment to be charged is more accurate.
Third embodiment
As shown in fig. 4, the present application provides a computing device comprising: the device comprises a processor 301, a memory 302 and a communication module 303, wherein the memory 302 and the communication module 303 are respectively connected with the processor, the memory 302 stores machine readable instructions executable by the processor 301, and the communication module 303 is used for communicating with an external device; when the computing device is running, the processor 301 executes the machine readable instructions to perform the method of the first embodiment, any optional implementation of the first embodiment, or any optional implementation of the second embodiment, or any optional implementation of the third embodiment.
The present application provides a computer-readable storage medium having stored thereon a computer program, which when executed by a processor performs the method of any of the first embodiment, any optional implementation of the first embodiment, or any of the second embodiment, any optional implementation of the second embodiment, or any optional implementation of the third embodiment.
The present application provides a computer program product, which when run on a computer causes the computer to execute the method of any of the first embodiment, any optional implementation of the first embodiment, or any optional implementation of the second embodiment, or any optional implementation of the third embodiment.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A charge remaining time calculation method, characterized by comprising:
reading the current temperature, the monomer voltage and the current residual capacity of the equipment to be charged;
determining the current charging current grade of the equipment to be charged according to the current temperature and the single voltage;
calculating first charging time of the equipment to be charged under the current charging current level according to the current residual capacity and the current charging current level, and estimating a first expected temperature rise value of the equipment to be charged according to the first charging time, a fitting function of the first charging time and the temperature rise of the equipment to be charged;
determining a first temperature rise value according to the current temperature of the equipment to be charged and a temperature point threshold value of the current charging current grade, wherein the temperature point threshold value is a temperature point for triggering equipment to reduce current;
judging whether the first predicted temperature rise value exceeds the first temperature rise value;
and if not, calculating the charging residual time of the equipment to be charged by adding the trickle charging time at the current charging current level to the first charging time.
2. The method of claim 1, wherein after said determining whether said first expected temperature rise value exceeds said first temperature rise value, said method further comprises:
if the current charging current level of the equipment to be charged exceeds the current charging current level, when the temperature of the equipment to be charged after charging under the current charging current level reaches a current reduction temperature point, the current charging current level is reduced, and then the next charging current level is entered;
calculating second charging time of the equipment to be charged under the next charging current grade according to the residual electric quantity at the next charging current grade and the next charging current grade, and determining a second predicted temperature rise value of the equipment to be charged according to the second charging time, the second charging time and a fitting function of the temperature rise of the equipment to be charged;
determining a second temperature rise value according to the temperature rise from the current flow reduction temperature point to the next flow reduction temperature point;
judging whether the second predicted temperature rise value exceeds the second temperature rise value;
and if not, calculating the charging residual time of the equipment to be charged by the second charging time and the trickle charging time at the next charging current level.
3. The method of claim 1, wherein reading the current temperature, the cell voltage, and the current remaining capacity of the device to be charged comprises: and periodically reading the current temperature, the cell voltage and the current remaining capacity of the equipment to be charged.
4. The method of claim 1, wherein calculating a first charging time of the device to be charged at a current charging current level according to the current remaining capacity and the current charging current level comprises:
according to a first formula QCharging of electricity=Q-QRemainder of-QTrickle flowDetermining the electric quantity to be charged according to a second formula T1=QCharging of electricity/I1Determining a first charging time at a present charging current level, wherein QCharging of electricityRepresenting the amount of power to be charged, Q representing the total amount of power of the device to be charged, QRemainder ofRepresents the current remaining capacity, QTrickle flowIndicates the currentTrickle charge capacity, T, at a charge current level1Indicating a first charging time, I, at a current charging current level1A current magnitude representing a current level of the charging current.
5. The method of claim 4, wherein estimating a first expected temperature rise value of the device to be charged based on the first charging time and a fitted function of the first charging time and the temperature rise of the device to be charged comprises:
according to T1And T1And determining a first predicted temperature rise value of the device to be charged by using a fitted function y = kx + b of the temperature rise, wherein y represents the first predicted temperature rise value, and x represents the first charging time T1And k and b represent coefficients.
6. The method of claim 1, wherein the first temperature increase value is determined according to a current temperature of the device to be charged and a current temperature point reaching the reduced current; the method comprises the following steps:
according to a third formula TTemperature rise 1=TDown flow-TAt presentWherein T isTemperature rise 1Represents a first temperature rise value, TDown flowIndicating that the temperature point of down-flow, T, is currently reachedAt presentRepresenting the current temperature value.
7. The method of claim 1, wherein after said calculating a charge remaining time of the device to be charged by said first charge time plus a trickle charge time at a present charge current level, the method further comprises:
and calculating the charging electric charge of the equipment to be charged according to the charging remaining time and the unit price charged according to the charging time.
8. A charging remaining time calculation apparatus, characterized in that the apparatus comprises:
the reading module is used for reading the current temperature, the monomer voltage and the current residual capacity of the equipment to be charged;
the determining module is used for determining the current charging current grade of the equipment to be charged according to the current temperature and the single voltage read by the reading module;
the calculation module is used for calculating first charging time of the equipment to be charged under the current charging current grade according to the current residual capacity and the current charging current grade, and estimating a first expected temperature rise value of the equipment to be charged according to the first charging time, the first charging time and a fitting function of the temperature rise of the equipment to be charged; determining a first temperature rise value according to the current temperature of the equipment to be charged and a temperature point threshold value of the current charging current grade, wherein the temperature point threshold value is a temperature point for triggering equipment to reduce current;
the judging module is used for judging whether the first predicted temperature rise value exceeds the first temperature rise value or not;
the calculation module is further configured to calculate the remaining charging time of the device to be charged by adding the trickle charging time at the current charging current level to the first charging time when the determination module determines that the first expected temperature rise value does not exceed the first temperature rise value.
9. The apparatus of claim 8, further comprising an execution module that executes a next charging current level after decreasing a current charging current level after the determining that the first expected temperature rise value exceeds the first temperature rise value;
the calculation module is further configured to calculate a second charging time of the device to be charged at the next charging current level according to the remaining power at the next charging current level and the next charging current level, and determine a second expected temperature rise value of the device to be charged according to the second charging time, and a fitting function of the temperature rise of the device to be charged; determining a second temperature rise value according to the temperature rise from the current flow reduction temperature point to the next flow reduction temperature point;
the judging module is further configured to judge whether the second predicted temperature rise value exceeds the second temperature rise value;
the calculation module is further configured to calculate the remaining charging time of the device to be charged according to a second charging time and a trickle charging time at a next charging current level when the determination module determines that the second expected temperature rise value does not exceed the second temperature rise value.
10. A non-transitory computer-readable storage medium storing computer instructions that cause a computer to perform the method of any one of claims 1-7.
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