Vehicle charging control method and device, equipment and storage medium

Abstract

The invention discloses a vehicle charging control method, device and equipment and a storage medium, and relates to the technical field of vehicle control, and the method comprises the steps: obtaining the selectable charging time period of a vehicle and the remaining electric quantity of a vehicle-mounted battery, carrying out the electric quantity decision, and determining the ending target electric quantity; determining the duration required for charging based on the residual electric quantity and the ending target electric quantity; selecting a target time period in the selectable charging time period based on the time length required by charging; and controlling the vehicle to be charged in the target time period. The decision can be executed by integrating multiple factors such as battery health and battery calibration, the ending target electric quantity is reasonably determined, the proper target time period can be automatically selected from the selectable charging time periods for charging, and the problem of battery damage or inaccurate battery display is avoided as far as possible on the premise of ensuring the charging requirement of a user.

Description

Technical Field

[0001] The present application relates to the field of vehicle control technology, and in particular to a vehicle charging control method, device, equipment and storage medium. Background Art

[0002] To enhance user experience, automakers have introduced a scheduled charging feature for new energy vehicles. This allows users to set a start and end time, and the vehicle automatically charges during that time. However, this solution is based solely on user settings and lacks intelligent functionality. Without specialized knowledge, users may rely solely on user settings, potentially causing the battery to either always be fully charged or never fully charged. This, combined with a lack of proper battery control, can lead to damage or inaccurate battery display. Summary of the Invention

[0003] The main purpose of this application is to provide a vehicle charging control method, device, equipment and storage medium, aiming to solve the technical problem that the relevant technology is not intelligent enough, charging only according to user settings, unable to reasonably control the battery, and may cause damage to the battery or inaccurate battery display.

[0004] To achieve the above objectives, the present application proposes a vehicle charging control method, the method comprising:

[0005] Obtaining the vehicle's optional charging period and the remaining power of the vehicle's battery, making a power decision, and determining an end target power, wherein the power decision is based on battery health or battery calibration;

[0006] Determining a required charging time based on the remaining power and the end target power;

[0007] Selecting a target time period within the optional charging time period based on the required charging time period;

[0008] The vehicle is controlled to be charged during the target period.

[0009] Optionally, making a power consumption decision and determining an end target power consumption includes:

[0010] Obtaining the battery type of the vehicle-mounted battery;

[0011] If the battery type is the first type, obtaining battery configuration information of the vehicle battery, where the first type of vehicle battery is a battery whose health is damaged by full charging, and the battery configuration information includes the number of charge and discharge times and / or the length of time in use;

[0012] The end target power is searched in a preset ratio table according to the battery configuration information.

[0013] Optionally, after obtaining the battery type of the vehicle battery, the method further includes:

[0014] If the battery type is the second type, detecting whether there is a full charge calibration signal, the second type of vehicle battery is a battery that does not damage the battery health when fully charged, but calibrates the power ratio through full charge;

[0015] If there is a full charge calibration signal, the end target power is set to the full power value;

[0016] If there is no full charge calibration signal, the end target power is set to an empty value or a user-set ratio.

[0017] Optionally, if the battery type is the second type, before detecting whether a full charge calibration signal is present, the method further includes:

[0018] Searching for a corresponding predicted remaining capacity based on the measured static voltage of the vehicle battery, and obtaining a cumulative current change of the vehicle battery processed by a preset charge and discharge strategy;

[0019] Calculating the difference ratio between the predicted remaining power and the measured remaining power, and calculating the ratio of the accumulated current change to the total capacity of the vehicle battery;

[0020] If the difference ratio is greater than a preset difference threshold, or the ratio is greater than a preset proportion threshold, a full charge calibration signal is set for the vehicle battery.

[0021] Optionally, selecting a target time period within the optional charging time period based on the required charging time period includes:

[0022] Obtaining electricity price information within the optional charging period;

[0023] Determine an optimal charging period within the optional charging period based on the electricity price information, wherein the optimal charging period is a sub-period with the lowest electricity price within the optional charging period;

[0024] If the duration corresponding to the optimal charging period is greater than or equal to the required charging time, then obtaining the end time of the optimal charging period;

[0025] The target time period is determined based on the time period end time by moving the charging time period forward.

[0026] Optionally, after determining the optimal charging period within the optional charging period according to the electricity price information, the method further includes:

[0027] If the duration corresponding to the optimal charging period is less than the required charging time, a suboptimal charging period is selected within the optional charging period according to the electricity price information, where the suboptimal charging period is a sub-period within the optional charging period with the lowest electricity price except for the optimal charging period;

[0028] Calculating the difference between the duration corresponding to the optimal charging period and the duration required for charging;

[0029] Selecting an extended period from the suboptimal charging period based on the duration difference;

[0030] The extended period and the optimal charging period are combined as a target period.

[0031] Optionally, after determining the optimal charging period within the optional charging period according to the electricity price information, the method further includes:

[0032] If the duration corresponding to the optimal charging period is less than the duration required for charging, obtaining the difference between the duration corresponding to the optimal charging period and the duration required for charging;

[0033] Obtaining a preceding adjacent time period and a succeeding adjacent time period of the optimal charging time period based on the time difference;

[0034] Determine, based on the electricity price information, a total charging price corresponding to the preceding adjacent time period and a total charging price corresponding to the following adjacent time period;

[0035] If the total price of the subsequent charging period is less than or equal to the total price of the preceding charging period, the subsequent charging period and the optimal charging period are combined into a target period;

[0036] If the total charging price of the subsequent neighbor is greater than the total charging price of the preceding neighbor, the preceding neighbor time period and the optimal charging time period are combined into a target time period.

[0037] In addition, to achieve the above objectives, the present application also proposes a vehicle charging control device, the vehicle charging control device comprising:

[0038] The acquisition module is used to obtain the optional charging period of the vehicle and the remaining power of the vehicle battery, and make a power decision to determine the end target power;

[0039] A determination module, configured to determine a required charging time based on the remaining power and the end target power;

[0040] A selection module, configured to select a target time period within the optional charging time period based on the required charging time period;

[0041] A control module is used to control the vehicle to charge during the target time period.

[0042] In addition, to achieve the above-mentioned purpose, the present application also proposes a vehicle charging control device, which includes: a memory, a processor, and a computer program stored on the memory and runnable on the processor, and the computer program is configured to implement the steps of the vehicle charging control method as described above.

[0043] In addition, to achieve the above-mentioned purpose, the present application also proposes a storage medium, which is a computer-readable storage medium. A computer program is stored on the storage medium, and when the computer program is executed by the processor, the steps of the vehicle charging control method as described above are implemented.

[0044] In addition, to achieve the above-mentioned purpose, the present application also provides a computer program product, which includes a computer program. When the computer program is executed by a processor, it implements the steps of the vehicle charging control method described above.

[0045] One or more technical solutions proposed in this application have at least the following technical effects:

[0046] Since decisions can be made based on multiple factors such as battery health and battery calibration, the target power level at the end can be reasonably determined, ensuring that the appropriate target period can be automatically selected from the optional charging periods for charging. While ensuring the user's charging needs, battery damage or inaccurate battery display can be avoided as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0048] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0049] Figure 1 A flow chart of the first embodiment of the vehicle charging control method of the present application;

[0050] Figure 2 A flow chart of the second embodiment of the vehicle charging control method of the present application is provided;

[0051] Figure 3 A flow chart illustrating a third embodiment of the vehicle charging control method of the present application;

[0052] Figure 4 This is a schematic diagram of the module structure of the vehicle charging control device according to an embodiment of the present application;

[0053] Figure 5 This is a schematic diagram of the device structure of the hardware operating environment involved in the vehicle charging control method in the embodiment of the present application.

[0054] The purpose, features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0055] It should be understood that the specific embodiments described herein are merely used to explain the technical solutions of the present application and are not intended to limit the present application.

[0056] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0057] Based on this, the embodiment of the present application provides a vehicle charging control method, referring to Figure 1 , Figure 1 This is a flow chart of the first embodiment of the vehicle charging control method of the present application.

[0058] In this embodiment, the vehicle charging control method includes steps S10 to S40:

[0059] Step S10: Obtain the optional charging time period of the vehicle and the remaining power of the vehicle battery, make a power decision, and determine the end target power.

[0060] It should be noted that the executor of this embodiment can be the vehicle itself or a vehicle charging control device arranged in the vehicle. The vehicle charging control device can be a controller arranged in the vehicle, such as an ECU controller, or other devices that can achieve the same or similar functions. This embodiment does not limit this. In this embodiment and the following embodiments, the vehicle charging control method of this application is described using the vehicle charging control device as an example.

[0061] It should be noted that the optional charging period can be intelligently selected to charge the vehicle battery. The optional charging period can be determined according to the actual settings of the user. If the user sets the start time and end time, the period between the start time and the end time can be directly used as the optional charging period.

[0062] If the user only sets the expected time of use, the time when the vehicle is connected to the charging device (such as a slow charging pile) can be used as the starting time, and the period between the starting time and the expected time of use can be used as the optional charging period;

[0063] If the user does not set the time, the time when the vehicle is connected to the charging device can be used as the starting time, the time extended from the starting time to the preset time can be used as the ending time, and the period between the starting time and the ending time can be used as the optional charging period.

[0064] The preset extension time can be set in advance by the administrator or user of the vehicle charging control device, for example, the preset extension time can be set to 24 hours.

[0065] In practice, the remaining capacity (SOC) of the vehicle battery can be read by the battery management system (BMS). The target capacity is the desired remaining capacity of the vehicle battery after charging is complete. The capacity decision can be based on battery health or battery calibration.

[0066] Step S20: Determine the time required for charging based on the remaining power and the end target power.

[0067] In actual use, after determining the remaining power and the end target power, the time required to charge the vehicle's onboard battery from the current remaining power to the end target power can be estimated, thereby obtaining the required charging time.

[0068] In specific implementations, in order to ensure reasonable control of the charging process of the vehicle battery, the manager of the vehicle charging control equipment can set the corresponding battery charging curve in the vehicle in advance. At this time, the charging time required can be estimated based on the battery charging curve, the maximum charging current that the charging device can provide, the remaining power, and the final target power.

[0069] The battery charging curve itself is a curve that describes the change of battery voltage during the charging process.

[0070] In actual applications, vehicles of the same model may use different types of on-board batteries depending on the manufacturing time, manufacturing plant, etc., and the battery charging curves of different types of on-board batteries may also be different. In this case, in order to facilitate reasonable control of the charging process, the manager of the vehicle charging control equipment can pre-set the battery charging curves corresponding to each possible battery type in the vehicle. When it is necessary to estimate the charging time in this case, the corresponding battery charging curve can be found according to the battery type of the on-board battery, and then the charging time can be estimated based on the battery charging curve, the maximum charging current that the charging device can provide, the remaining power, and the target power at the end.

[0071] Step S30: selecting a target time period within the optional charging time period based on the required charging time period.

[0072] It should be noted that after determining the required charging time, the electricity price information can be comprehensively considered to select a suitable target time period within the optional charging time period.

[0073] Step S40: Control the vehicle to charge during the target period.

[0074] It is understandable that after the target period is determined, the vehicle may be controlled to start charging when the mid-period start time of the target period is reached, and may be controlled to end charging when the mid-period end time of the target period is reached.

[0075] In actual application, in order to meet the actual charging needs of users, users can also be allowed to pre-set reservation charging strategies, which can include electricity price priority and electricity price health comprehensive;

[0076] If the user sets the scheduled charging strategy to be a comprehensive electricity price and health strategy, then steps S10 to S40 of this embodiment may be performed;

[0077] If the user sets the reservation charging strategy to prioritize electricity prices, the period with the lowest electricity price within the optional charging period can be directly selected as the charging period, and the vehicle can be controlled to charge only within this charging period until it is fully charged or continues to charge until the end of the charging period.

[0078] This embodiment provides a vehicle charging control method that can make decisions based on multiple factors such as battery health and battery calibration, reasonably determine the end target power level, and ensure that a suitable target period can be automatically selected from the available charging periods for charging. While ensuring the user's charging needs, it avoids battery damage or inaccurate battery display as much as possible.

[0079] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar contents as those in the above embodiment 1 can be referred to the above introduction and will not be described in detail later. Figure 2 , step S10 includes steps S101 to S103:

[0080] Step S101: Obtain the optional charging time period of the vehicle and the remaining power of the vehicle battery, and obtain the battery type of the vehicle battery.

[0081] Step S102: If the battery type is the first type, then obtain battery configuration information of the vehicle-mounted battery.

[0082] Step S103: searching for the end target power in a preset ratio table according to the battery configuration information.

[0083] It should be noted that the first type of battery is a battery whose health is damaged by full charging, such as a ternary lithium battery (NCM battery). If fully charged to 100%, it will affect the battery health. Battery configuration information can include the number of times the vehicle battery has been charged and discharged and / or the length of time it has been used.

[0084] For the first type of battery, it is generally beneficial to the health of the battery to keep the battery power within the power range of 20%-80%. At this time, the optimal charging ratio of the battery is generally set to the maximum value within this power range, that is, 80%. However, in actual use, as the battery ages and the number of charge and discharge cycles increases, its performance will change, and the maximum charge capacity may need to be further reduced (for example, to 70%-75%) to maintain the battery's working efficiency and extend its service life. Based on this, the manager of the vehicle charging control equipment can calibrate the on-board battery to determine the most appropriate maximum charge capacity under different charge and discharge times and different usage durations, and store the calibration results through a preset ratio table;

[0085] When actually performing charging control, in order to determine the appropriate end target power, the maximum charge capacity corresponding to the battery configuration information can be found in the preset ratio table, and the found maximum charge capacity is used as the end target power.

[0086] In a specific implementation, in order to ensure that the end target power can be reasonably set, after step S101 in this embodiment, the following steps may be further included:

[0087] If the battery type is the second type, detecting whether there is a full charge calibration signal, the second type of vehicle battery is a battery that does not damage the battery health when fully charged, but calibrates the power ratio through full charge;

[0088] If there is a full charge calibration signal, the end target power is set to the full power value;

[0089] If there is no full charge calibration signal, the end target power is set to an empty value or a user-set ratio.

[0090] It should be noted that the second type of vehicle battery may be a battery that does not damage the battery health when fully charged, but calibrates the power ratio through full charging, such as a lithium iron phosphate battery (LFP battery).

[0091] In actual application, if the second type of vehicle battery is not fully charged for a long time, the displayed power ratio may be inaccurate. Based on this, it is possible to first detect whether the vehicle battery needs full charge calibration, that is, to detect whether there is a full charge calibration signal;

[0092] If a full charge calibration signal is present, it indicates that the vehicle battery needs to be fully charged for calibration. Therefore, the end target power level can be set to the full power value.

[0093] If there is no full charge calibration signal, it means that the vehicle battery does not need to be calibrated at this time. At this time, if the user has pre-set the ratio at the end of charging, that is, the user sets the ratio, the end target power can be set to the user-set ratio; if the user has not pre-set the ratio at the end of charging, the end target power can be set to an empty value.

[0094] In actual applications, the vehicle charging control device can set a full charge calibration signal for the vehicle battery when the vehicle mileage reaches a preset mileage value after the last full charge calibration, or when the timer reaches a preset interval length after the last full charge calibration.

[0095] In actual application, if the end target power is set to the full power value or the user-set ratio, step S20 can be executed to estimate the charging time and execute the subsequent steps;

[0096] If the end target power is set to a null value, it means that there is no specific limit on the proportion of power to be charged before stopping charging. At this time, the charging time is no longer estimated. Instead, the period with the lowest electricity price within the optional charging period is directly used as the charging period, and the vehicle is controlled to charge only within this charging period until it is fully charged or continues to charge until the end of the charging period.

[0097] In specific applications, determining whether calibration is required based on mileage or interval duration may not be accurate enough. To ensure accurate determination, in this embodiment, if the battery type is the second type, before the step of detecting whether there is a full charge calibration signal, the following steps may be further performed:

[0098] Searching for a corresponding predicted remaining capacity based on the measured static voltage of the vehicle battery, and obtaining a cumulative current change of the vehicle battery processed by a preset charge and discharge strategy;

[0099] Calculating the difference ratio between the predicted remaining power and the measured remaining power, and calculating the ratio of the accumulated current change to the total capacity of the vehicle battery;

[0100] If the difference ratio is greater than a preset difference threshold, or the ratio is greater than a preset proportion threshold, a full charge calibration signal is set for the vehicle battery.

[0101] It should be noted that the static measured voltage may be the voltage value of the vehicle battery collected by the BMS after the vehicle battery has been static for a preset period of time.

[0102] In actual use, the manager of the vehicle charging control equipment can pre-establish a voltage-to-charge relationship curve (OCV-SOC curve). Afterwards, the corresponding predicted remaining power can be found in the voltage-to-charge relationship curve based on the measured static voltage of the vehicle battery, and the difference between the predicted remaining power and the measured remaining power can be calculated, and the difference can be used as the difference ratio.

[0103] If the difference ratio is greater than the preset difference threshold, it may indicate that the vehicle battery needs to be fully charged for calibration when judging by the voltage prediction ratio.

[0104] For the sake of accuracy, different voltage-to-electricity relationship curves can be set based on different temperatures.

[0105] For example, suppose the measured static voltage (OCV) of the battery after resting is 3.92V and the temperature is 25°C. The voltage-to-charge curve corresponding to 25°C is Curve A. Based on the measured OCV value (3.92V), find the corresponding data in Curve A and calculate the estimated SOC value (SOC_est). If OCV = 3.95V, the SOC is 30%, and if OCV = 3.90V, the SOC is 20%.

[0106] Then it is calculated by linear interpolation:

[0107] Predicted remaining power SOCest = 20% + (3.92-3.90) / (3.95-3.90)×(30%-20%) = 20% + 0.02 / 0.05×10% = 24%;

[0108] At this time, if the measured power ratio displayed by the BMS is 28%, the difference ratio is 4%. At this time, if the preset difference threshold is 3%, it can be determined that the vehicle battery is set to a full charge calibration signal.

[0109] In actual use, the preset charge and discharge strategy can be pre-set by the manager of the vehicle charging control device, and the cumulative current change can be the total current change calculated after the vehicle battery is continuously charged and discharged based on the preset charge and discharge strategy.

[0110] For example: Assume SOC_0 = 80%

[0111] Battery capacity: C = 50Ah

[0112] Measurement time interval: △t=1min

[0113] Default threshold: 5%

[0114] The preset charge and discharge strategy is that the charge and discharge currents in each minute within 5 minutes are 10Ah, 15Ah, 0Ah, 5Ah, and 10Ah respectively;

[0115] Discretizing time and considering the current per minute to be constant, we have:

[0116] △Q1=-10*(1 / 60)=-0.1667Ah,

[0117] Cumulative power change △Q=-0.1667,

[0118] Current SOC = 80% + (-1.667 / 50) = 79.6667%

[0119] Time: 1-2 minutes:

[0120] △Q2=-15*(1 / 60)=-0.25Ah,

[0121] Cumulative power change △Q=-0.1667-0.25=-0.4167,

[0122] Current SOC = 80% + (-0.4167 / 50) = 79.1667%

[0123] Time: 2-3 minutes:

[0124] △Q3=0*(1 / 60)=0Ah,

[0125] Cumulative power change △Q=-0.4167-0=-0.4167,

[0126] Current SOC = 80% + (-0.4167 / 50) = 79.1667%

[0127] Time: 3-4 minutes:

[0128] △Q4=5*(1 / 60)=0.0833Ah,

[0129] Cumulative power change △Q=-0.4167+0.0833=-0.3333,

[0130] Current SOC = 79.1667% + (-0.0833 / 50) = 79.3333%

[0131] Time: 4-5 minutes:

[0132] △Q4=10*(1 / 60)=0.1667Ah,

[0133] Cumulative power change △Q=-0.3333+0.1667=-0.1666,

[0134] Current SOC = 79.3333% + (0.1667 / 50) = 79.6666%

[0135] At this time, the ratio of the cumulative current change to the total capacity of the vehicle battery = |-0.1666| / 50 = 0.33%, and 0.33% < 5%, it can be determined that there is no need to set a full charge calibration signal. On the contrary, if the ratio is greater than or equal to 5%, it is determined that calibration is required, and the full charge calibration signal can be set at this time.

[0136] It is understandable that in order to ensure the comprehensiveness of the detection, when the difference ratio is greater than the preset difference threshold, or the ratio is greater than the preset proportion threshold, it can be determined that full charge calibration is required, thereby setting a full charge calibration signal for the vehicle battery.

[0137] Of course, according to actual needs, the detection bias can also be set to be more rigorous. At this time, it can be determined that full charge calibration is required only when the difference ratio is greater than the preset difference threshold and the ratio is greater than the preset proportion threshold, thereby setting a full charge calibration signal for the vehicle battery.

[0138] This embodiment provides a vehicle charging control method. Since the types of batteries in the vehicle are divided, different analyses are performed for different types of vehicle batteries, thereby ensuring that the end target power can be reasonably determined.

[0139] Based on the first embodiment of the present application, in the third embodiment of the present application, the same or similar contents as those in the first embodiment can be referred to the above introduction and will not be described in detail later. Figure 3 , step S30 includes steps S301 to S304:

[0140] Step S301: Obtain electricity price information within the optional charging period.

[0141] Step S302: determining an optimal charging period within the optional charging period according to the electricity price information, wherein the optimal charging period is a sub-period with the lowest electricity price within the optional charging period.

[0142] Step S303: If the duration corresponding to the optimal charging period is greater than or equal to the required charging time, then the end time of the optimal charging period is obtained.

[0143] Step S304: Determine a target time period by moving the charging time forward based on the end time of the time period.

[0144] It should be noted that the electricity price information during the optional charging period can be obtained by accessing the electricity price information interface provided by the electricity price management unit or the electricity price information company.

[0145] In actual use, the optional charging period with consistent electricity prices and continuous periods can be divided into sub-periods. Then, the electricity prices corresponding to the sub-periods in each optional charging period can be compared, and the sub-period with the lowest electricity price can be selected as the optimal charging period.

[0146] Among them, if there are multiple sub-periods within the optional charging period with equal electricity prices and all of them are the lowest electricity prices, the sub-period with the longest corresponding duration can be used as the optimal charging period.

[0147] In actual application, after determining the optimal charging period, it is possible to further detect whether the vehicle battery can be charged to the end target proportion within the optimal charging period. Therefore, the duration corresponding to the optimal charging period can be compared with the duration required for charging.

[0148] It can be understood that if the duration corresponding to the optimal charging period is greater than or equal to the time required for charging, it means that within the optimal charging period, the battery capacity ratio of the vehicle can be charged to the end target ratio. However, since the vehicle is stationary after charging is completed, the battery capacity may also be lost to a certain extent. Based on this, it is necessary to ensure that the time when charging ends is as close as possible to the end time of the optional charging period. Therefore, the charging time required can be pushed forward from the end time of the optimal charging period, and the period obtained in this way can be used as the target period.

[0149] For example: Assume that the charging time required is 3 hours, and the optional charging period is from 9:00 pm the previous day to 12:00 noon the next day. During this process, 1:00-6:00 am is the best charging period. At this time, you can push forward three hours from 6:00 am and set 3:00-6:00 am as the target period.

[0150] In a specific implementation, if it is necessary to ensure that the overall charging electricity price is as low as possible, after step S302 in this embodiment, the following steps may be further included:

[0151] If the duration corresponding to the optimal charging period is less than the required charging time, a suboptimal charging period is selected within the optional charging period according to the electricity price information, where the suboptimal charging period is a sub-period within the optional charging period with the lowest electricity price except for the optimal charging period;

[0152] Calculating the difference between the duration corresponding to the optimal charging period and the duration required for charging;

[0153] Selecting an extended period from the suboptimal charging period based on the duration difference;

[0154] The extended period and the optimal charging period are combined as a target period.

[0155] It should be noted that if the duration corresponding to the optimal charging period is less than the time required for charging, it means that the vehicle battery cannot be charged to the target proportion within the optimal charging period. At this time, in order to ensure the lowest overall charging price, the second-best charging period can be selected within the optional charging period based on the electricity price information. The second-best charging period is the sub-period with the lowest electricity price within the optional charging period except for the optimal charging period.

[0156] In actual use, when selecting an extended period from the suboptimal charging period based on the time difference, the extended period can be made as close as possible to the optimal charging period.

[0157] For example: Assume that charging takes 3 hours, and the available charging periods are from 9:00 pm the previous night to 12:00 noon the next day. During this process, 1:00-3:00 am is the best charging period, and the time difference is 1 hour. The second best charging period is 5:00-7:00 am. At this time, in order to ensure that the extended period is as close as possible to the optimal charging period, 5:00-6:00 am can be used as the extended period. The target periods are 1:00-3:00 am and 5:00-6:00 am.

[0158] In a specific implementation, if it is necessary to ensure that charging is as continuous as possible, after step S302 in this embodiment, the following steps may be further performed:

[0159] If the duration corresponding to the optimal charging period is less than the duration required for charging, obtaining the difference between the duration corresponding to the optimal charging period and the duration required for charging;

[0160] Obtaining a preceding adjacent time period and a succeeding adjacent time period of the optimal charging time period based on the time difference;

[0161] Determine, based on the electricity price information, a total charging price corresponding to the preceding adjacent time period and a total charging price corresponding to the following adjacent time period;

[0162] If the total price of the subsequent charging period is less than or equal to the total price of the preceding charging period, the subsequent charging period and the optimal charging period are combined into a target period;

[0163] If the total charging price of the subsequent neighbor is greater than the total charging price of the preceding neighbor, the preceding neighbor time period and the optimal charging time period are combined into a target time period.

[0164] It should be noted that if the duration corresponding to the optimal charging period is less than the time required for charging, it means that the vehicle battery cannot be charged to the end target proportion within the optimal charging period. At this time, it is necessary to determine how long charging is required outside the optimal charging period. Therefore, the difference between the duration corresponding to the optimal charging period and the time required for charging can be obtained.

[0165] In actual use, the period obtained by pushing the start time of the optimal charging period forward by the time difference can be used as the preceding period, and the period obtained by pushing the end time of the optimal charging period backward by the time difference can be used as the following period.

[0166] In actual use, the total cost of charging in the preceding time period can be calculated based on the electricity price information, thereby obtaining the total price of the preceding charging period. Similarly, the total price of the succeeding charging period can be obtained.

[0167] While ensuring charging continuity, we can still try to keep the overall charging price as low as possible. Therefore, we can compare the total charging price of the next neighbor with the total charging price of the previous neighbor. If the total charging price of the next neighbor is less than or equal to the total charging price of the previous neighbor, then the next neighbor period and the optimal charging period are combined to form the target period.

[0168] If the total charging price of the subsequent neighbor is greater than that of the preceding neighbor, the preceding neighbor period and the optimal charging period are combined into the target period.

[0169] This embodiment provides a vehicle charging control method. After determining the required charging time, this embodiment can select the time period with the lowest electricity price as much as possible within the optional charging time period for charging based on the electricity price, ensuring that the user's actual low-cost charging needs are met.

[0170] It should be noted that the above examples are only used to understand the present application and do not constitute a limitation on the vehicle charging control method of the present application. More simple transformations based on this technical concept are all within the scope of protection of the present application.

[0171] This application also provides a vehicle charging control device, please refer to Figure 4 , the vehicle charging control device includes:

[0172] The acquisition module 10 is used to obtain the optional charging period of the vehicle and the remaining power of the vehicle battery, and make a power decision to determine the end target power;

[0173] A determination module 20 is configured to determine a required charging time based on the remaining power and the target end power;

[0174] A selection module 30 is configured to select a target time period within the optional charging time period based on the required charging time period;

[0175] The control module 40 is configured to control the vehicle to be charged during the target period.

[0176] The vehicle charging control device provided in this application utilizes the vehicle charging control method of the aforementioned embodiment, resolving the technical issues of related technologies that are not intelligent enough, charging based solely on user settings, failing to properly control the battery, and potentially causing damage to the battery or inaccurate battery display. Compared to the prior art, the beneficial effects of the vehicle charging control device provided in this application are the same as those of the vehicle charging control method provided in the aforementioned embodiment, and the other technical features of the vehicle charging control device are the same as those disclosed in the aforementioned embodiment method, and are not further elaborated here.

[0177] The present application provides a vehicle charging control device, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the vehicle charging control method in the above-mentioned embodiment one.

[0178] Reference below Figure 5 , which shows a schematic structural diagram of a vehicle charging control device suitable for implementing an embodiment of the present application. The vehicle charging control device in the embodiment of the present application may include, but is not limited to, mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), in-vehicle terminals (e.g., in-vehicle navigation terminals), and fixed terminals such as digital TVs and desktop computers. Figure 5 The vehicle charging control device shown is merely an example and should not limit the functions and scope of use of the embodiments of the present application.

[0179] like Figure 5As shown, the vehicle charging control device may include a processing device 1001 (such as a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes according to the program stored in the read-only memory 1002 or the program loaded from the storage device 1003 to the random access memory 1004. The random access memory 1004 also stores various programs and data required for the operation of the vehicle charging control device. The processing device 1001, the read-only memory 1002 and the random access memory 1004 are connected to each other via a bus 1005. The input / output interface 1006 is also connected to the bus. Generally, the following systems can be connected to the input / output interface 1006: an input device 1007 including, for example, a touch screen, a touchpad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; an output device 1008 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; a storage device 1003 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 1009. The communication device 1009 can allow the vehicle charging control device to communicate with other devices wirelessly or wired to exchange data. Although the figure shows a vehicle charging control device with various systems, it should be understood that it is not required to implement or have all of the systems shown. More or fewer systems may be implemented or provided instead.

[0180] In particular, according to the embodiments disclosed in the present application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, the embodiments disclosed in the present application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program comprising program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network via a communication device, or installed from a storage device 1003, or installed from a read-only memory 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are performed.

[0181] The vehicle charging control device provided in this application utilizes the vehicle charging control method of the aforementioned embodiment, resolving the technical issues of related technologies that are not intelligent enough, charging based solely on user settings, failing to properly control the battery, and potentially causing damage to the battery or inaccurate battery display. Compared to the prior art, the beneficial effects of the vehicle charging control device provided in this application are the same as those of the vehicle charging control method provided in the aforementioned embodiment, and the other technical features of the vehicle charging control device are the same as those disclosed in the method of the previous embodiment, and are not further elaborated here.

[0182] It should be understood that the various parts disclosed in this application can be implemented using hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0183] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

[0184] The present application provides a computer-readable storage medium having computer-readable program instructions (ie, a computer program) stored thereon, and the computer-readable program instructions are used to execute the vehicle charging control method in the above-mentioned embodiment.

[0185] The computer-readable storage medium provided in this application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems or devices, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, 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 disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In this embodiment, the computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system or device. The program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination thereof.

[0186] The computer-readable storage medium may be included in the vehicle charging control device, or may exist independently without being incorporated into the vehicle charging control device.

[0187] The above-mentioned computer-readable storage medium carries one or more programs. When the above-mentioned one or more programs are executed by the vehicle charging control device, the vehicle charging control device: obtains the vehicle's optional charging period and the remaining power of the vehicle battery, and makes a power decision to determine the end target power; determines the required charging time based on the remaining power and the end target power; selects a target time within the optional charging period based on the required charging time; and controls the vehicle to charge within the target time.

[0188] Computer program code for performing the operations of the present application may be written in one or more programming languages, or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0189] The flow charts and block diagrams in the accompanying drawings illustrate the possible architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present application. In this regard, each box in the flow chart or block diagram can represent a module, program segment or a part of code, and the module, program segment or a part of code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order than that marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flow chart, and the combination of the boxes in the block diagram and / or flow chart can be implemented by a dedicated hardware-based system that performs the specified function or operation, or can be implemented by a combination of dedicated hardware and computer instructions.

[0190] The modules described in the embodiments of the present application may be implemented in software or hardware, wherein the name of a module does not necessarily limit the unit itself.

[0191] The computer-readable storage medium provided in this application is a computer-readable storage medium that stores computer-readable program instructions (i.e., a computer program) for executing the aforementioned vehicle charging control method. This addresses the technical issues of related technologies that are not intelligent enough, charging based solely on user settings, failing to properly control the battery, and potentially causing damage to the battery or inaccurate battery display. Compared to the prior art, the beneficial effects of the computer-readable storage medium provided in this application are the same as those of the vehicle charging control method provided in the aforementioned embodiment, and are not further elaborated here.

[0192] The present application also provides a computer program product, including a computer program, which implements the steps of the vehicle charging control method as described above when executed by a processor.

[0193] The computer program product provided in this application can address the technical issues of related technologies that are not intelligent enough, charging based solely on user settings, failing to properly control the battery, and potentially causing damage to the battery or inaccurate battery display. Compared to the prior art, the beneficial effects of the computer program product provided in this application are the same as those of the vehicle charging control method provided in the above-mentioned embodiments, and will not be elaborated here.

[0194] The above description is only part of the embodiments of the present application and does not limit the scope of protection of the present application. All equivalent structural transformations made by using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect application in other related technical fields are included in the scope of protection of the present application.

Claims

1. A vehicle charging control method, characterized in that: The vehicle charging control method includes: Obtaining the vehicle's optional charging period and the remaining power of the vehicle's battery, making a power decision, and determining an end target power, wherein the power decision is based on battery health or battery calibration; Determining a required charging time based on the remaining power and the end target power; Selecting a target time period within the optional charging time period based on the required charging time period; The vehicle is controlled to be charged during the target period.

2. The vehicle charging control method according to claim 1, wherein: The making of power decision and determining the end target power includes: Obtaining the battery type of the vehicle-mounted battery; If the battery type is the first type, obtaining battery configuration information of the vehicle battery, where the first type of vehicle battery is a battery whose health is damaged by full charging, and the battery configuration information includes the number of charge and discharge times and / or the length of time in use; The end target power is searched in a preset ratio table according to the battery configuration information.

3. The vehicle charging control method according to claim 2, wherein: After obtaining the battery type of the vehicle-mounted battery, the method further includes: If the battery type is the second type, detecting whether there is a full charge calibration signal, the second type of vehicle battery is a battery that does not damage the battery health when fully charged, but calibrates the power ratio through full charge; If there is a full charge calibration signal, the end target power is set to the full power value; If there is no full charge calibration signal, the end target power is set to an empty value or a user-set ratio.

4. The vehicle charging control method according to claim 3, wherein: If the battery type is the second type, before detecting whether there is a full charge calibration signal, the method further includes: Searching for a corresponding predicted remaining capacity based on the measured static voltage of the vehicle battery, and obtaining a cumulative current change of the vehicle battery processed by a preset charge and discharge strategy; Calculating the difference ratio between the predicted remaining power and the measured remaining power, and calculating the ratio of the accumulated current change to the total capacity of the vehicle battery; If the difference ratio is greater than a preset difference threshold, or the ratio is greater than a preset proportion threshold, a full charge calibration signal is set for the vehicle battery.

5. The vehicle charging control method according to claim 1, wherein: The selecting a target time period within the optional charging time period based on the required charging time period includes: Obtaining electricity price information within the optional charging period; Determine an optimal charging period within the optional charging period based on the electricity price information, wherein the optimal charging period is a sub-period with the lowest electricity price within the optional charging period; If the duration corresponding to the optimal charging period is greater than or equal to the required charging time, then obtaining the end time of the optimal charging period; The target time period is determined based on the time period end time by moving the charging time period forward.

6. The vehicle charging control method according to claim 5, wherein: After determining the optimal charging period within the optional charging period according to the electricity price information, the method further includes: If the duration corresponding to the optimal charging period is less than the required charging time, a suboptimal charging period is selected within the optional charging period according to the electricity price information, where the suboptimal charging period is a sub-period within the optional charging period with the lowest electricity price except for the optimal charging period; Calculating the difference between the duration corresponding to the optimal charging period and the duration required for charging; Selecting an extended period from the suboptimal charging period based on the duration difference; The extended period and the optimal charging period are combined as a target period.

7. The vehicle charging control method according to claim 5, wherein: After determining the optimal charging period within the optional charging period according to the electricity price information, the method further includes: If the duration corresponding to the optimal charging period is less than the duration required for charging, obtaining the difference between the duration corresponding to the optimal charging period and the duration required for charging; Obtaining a preceding adjacent time period and a succeeding adjacent time period of the optimal charging time period based on the time difference; Determine, based on the electricity price information, a total charging price corresponding to the preceding adjacent time period and a total charging price corresponding to the following adjacent time period; If the total price of the subsequent charging period is less than or equal to the total price of the preceding charging period, the subsequent charging period and the optimal charging period are combined into a target period; If the total charging price of the subsequent neighbor is greater than the total charging price of the preceding neighbor, the preceding neighbor time period and the optimal charging time period are combined into a target time period.

8. A vehicle charging control device, characterized in that: The vehicle charging control device includes: The acquisition module is used to obtain the optional charging period of the vehicle and the remaining power of the vehicle battery, and make a power decision to determine the end target power; A determination module, configured to determine a required charging time based on the remaining power and the end target power; A selection module, configured to select a target time period within the optional charging time period based on the required charging time period; A control module is used to control the vehicle to charge during the target time period.

9. A vehicle charging control device, characterized in that: The device includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the vehicle charging control method according to any one of claims 1 to 7.

10. A storage medium, characterized in that: The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the vehicle charging control method according to any one of claims 1 to 7 are implemented.

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