Charging duration adaptive control strategy, device and vehicle

Abstract

This invention relates to the field of vehicle charging control technology, and discloses an adaptive charging time control strategy, device, and vehicle. The strategy includes: acquiring the current battery temperature; acquiring a data mapping relationship between the allowable charging rate and remaining battery capacity corresponding to the current battery temperature; acquiring the current starting and ending battery capacity; determining an estimated charging time based on the current starting battery capacity, the ending battery capacity, and the data mapping relationship between the allowable charging rate and remaining battery capacity; acquiring the user's desired remaining charging time; comparing the estimated charging time with the user's desired remaining charging time; and controlling the charging rate and battery management system based on the comparison result. Applying the technical solution of this invention enables the actual charging time of the vehicle to match the user's desired remaining charging time.

Description

Technical Field

[0001] This invention relates to the field of vehicle charging control technology, specifically to an adaptive charging duration control strategy, device, and vehicle. Background Technology

[0002] When a vehicle is charging, the battery management system interacts with the charging station and typically estimates the total charging time based on user settings or the system's default charging completion level, combined with a preset charging map, charging station parameters, and the initial charging level. This estimate is then sent to the user. Mainstream automakers use higher charging rates to shorten charging time; however, high-rate charging during fast charging can impact battery lifespan. Furthermore, to maintain an optimal temperature range during fast charging, battery thermal management is required to heat the battery in low-temperature conditions, both of which consume energy. When users do not need to use the vehicle for an extended period, there is no need to sacrifice battery life and waste energy with high-rate fast charging. Therefore, an adaptive charging time control strategy is needed to match the actual charging time of the vehicle with the user's desired remaining charging time. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the purpose of this application is to provide a charging time adaptive control strategy, device and vehicle, which aims to match the actual charging time of the vehicle with the user's expected remaining charging time.

[0004] In a first aspect, embodiments of this application provide a charging duration adaptive control strategy, including:

[0005] Get the current battery temperature;

[0006] Obtain the data mapping relationship between the allowable charging rate and the remaining battery capacity corresponding to the current battery temperature;

[0007] Get the current starting and ending charge levels;

[0008] Based on the current starting power level, the ending power level, and the data mapping relationship between the allowable charging rate and the remaining power level, the estimated charging time is determined.

[0009] Obtain the user's expected remaining charging time;

[0010] Compare the estimated charging time with the user's expected remaining charging time;

[0011] If the estimated charging time is greater than the user's expected remaining charging time, then charging is performed according to the allowed charging rate in the allowed charging rate-remaining power data mapping relationship, and a normal operation control command is sent to the battery management system.

[0012] If the estimated charging time is not greater than the user's expected remaining charging time, then according to the battery fast charging control strategy, the peak charging rate is reduced through rate allocation, and a control command to shut down the battery thermal management system in advance is sent.

[0013] Both the current starting and ending battery levels refer to the remaining battery capacity. The permissible charging rate is the maximum allowable charging rate at the current temperature, derived from the charging performance of the vehicle battery and the charging station. The permissible charging rate-remaining battery capacity mapping relationship typically shows a lower permissible charging rate at higher battery levels and a higher permissible charging rate at lower battery levels, assuming the same current battery temperature and the same charging station. Different battery manufacturers use different permissible charging rate-remaining battery capacity mapping relationships, which can be presented as a MAP table or a charging rate curve.

[0014] With this setup, the estimated charging time for fast charging at the current battery temperature can be calculated by using the current battery temperature, power parameters, and the mapping relationship between the allowable charging rate and the remaining power. Since the allowable charging rate is the maximum charging rate allowed at the current temperature based on the charging performance of the vehicle battery and the charging station, the estimated charging time is the shortest time required to charge from the current starting power to the ending power while maintaining the current battery temperature. By comparing the estimated charging time with the user's expected remaining time, when the estimated charging time cannot meet the user's expectations, the system uses the allowed charging rate from the allowed charging rate-remaining capacity data mapping relationship for charging. It then sends a normal operation control command to the battery management system, enabling the battery thermal management system to operate normally according to its settings. In low-temperature conditions, it heats the battery to an optimal temperature range, typically 20℃-35℃, depending on the battery manufacturer's settings, to ensure charging efficiency. When the estimated charging time is not greater than the user's expected remaining charging time, indicating that charging at the allowed charging rate results in excessive charging time and excessively fast charging, the system proactively reduces the peak charging rate through rate allocation and exits the heating state of the battery thermal management system early. This solves the problem of traditional vehicle charging modes being fixed and unable to adapt to users' personalized charging time needs. It prevents battery aging damage caused by high-rate fast charging in scenarios where the user does not need to use the vehicle for an extended period, while reducing ineffective energy consumption of the thermal management system. It balances battery life protection and thermal management energy consumption optimization, improving the flexibility and scenario adaptability of vehicle charging control.

[0015] In one possible embodiment, the battery fast charging control strategy includes:

[0016] Under the condition that the estimated charging time is not greater than the user's expected remaining charging time, the average charging rate corresponding to the charging from the current starting power to the ending power within the user's expected remaining charging time is calculated as the initial average charging rate.

[0017] Compare the allowed charging rate in the allowed charging rate-remaining power data mapping relationship with the initial average charging rate;

[0018] If the allowed charging rate in the allowed charging rate-remaining power data mapping relationship is not less than the initial average charging rate, then the entire charging process will be carried out according to the initial average charging rate.

[0019] If the allowed charging rate in the allowed charging rate-remaining power data mapping relationship is less than the initial average charging rate, then the initial average charging rate is iteratively optimized to obtain an iterative average charging rate. Based on the iterative average charging rate and the allowed charging rate-remaining power data mapping relationship, a recommended charging rate-remaining power data mapping relationship is generated, and charging is performed according to the recommended charging rate in the recommended charging rate-remaining power data mapping relationship to complete the rate allocation.

[0020] This setup calculates the initial average charging rate to meet the user's expected remaining charging time, then compares it with the permitted charging rate. If the estimated charging time is long, the initial average charging rate is low, and the permitted charging rate throughout the charging process meets the initial average charging rate, then the initial average charging rate can be directly used for uniform average steady-state charging, simplifying the control logic. However, if the estimated charging time is short, the initial average charging rate is high, and there are instances where the permitted charging rate does not meet the initial average charging rate, then charging is performed according to the permitted charging rate in the remaining charge range where the initial average charging rate is not met. The initial average charging rate is then iteratively optimized to ensure that the overall charging time meets the user's expected remaining time, guaranteeing the accuracy of charging time control.

[0021] In one possible embodiment, the iterative optimization of the initial average charging rate to obtain an iterative average charging rate, the generation of a recommended charging rate-remaining capacity data mapping relationship based on the iterative average charging rate and the allowed charging rate-remaining capacity data mapping relationship, and the charging according to the recommended charging rate in the recommended charging rate-remaining capacity data mapping relationship to complete the rate allocation, includes:

[0022] The allowed charging rate in the allowed charging rate-remaining power data mapping relationship is divided into a first region and a second region. At this time, the allowed charging rate in the first region is not less than the initial average charging rate, and the allowed charging rate in the second region is less than the initial average charging rate.

[0023] Determine the minimum remaining power in the second region, and calculate the non-adjustable charging time required to charge from the minimum remaining power to the final power level;

[0024] The adjustable charging time is obtained by subtracting the non-adjustable charging time from the user's expected remaining charging time.

[0025] Calculate the average charging rate corresponding to charging from the current starting power to the minimum remaining power within the adjustable charging time, and use it as the iterative average charging rate;

[0026] Compare the allowed charging rate belonging to the first region in the allowed charging rate-remaining power data mapping relationship with the iterative average charging rate;

[0027] If there is a case in the first region where the allowed charging rate is less than the iterative average charging rate, then the following steps are repeated: the two regions of the allowed charging rate-remaining power data mapping relationship are re-divided according to the iterative average charging rate: the region where the allowed charging rate is not less than the iterative average charging rate is the updated first region, and the region where the allowed charging rate is less than the iterative average charging rate is the updated second region. The minimum remaining power of the second region is then re-determined, the non-adjustable charging time is recalculated, the adjustable charging time is recalculated, the iterative average charging rate is recalculated, and the rate comparison process is repeated.

[0028] If all permissible charging rates in the first region are not less than the iterative charging rate, then the portion of the permissible charging rate in the permissible charging rate-remaining power data mapping relationship that is greater than the iterative average charging rate is replaced with the iterative average charging rate, generating a recommended charging rate-remaining power data mapping relationship, and charging is performed according to the recommended charging rate in the recommended charging rate-remaining power data mapping relationship to complete the rate allocation.

[0029] With this setting, if the estimated charging time is short, the initial average charging rate is large, and there are situations where the allowable charging rate does not meet the initial average charging rate during the entire charging process, then the remaining power range that does not meet the initial average charging rate will be charged according to the allowable charging rate, and the initial average charging rate will be optimized and iterated. Under the same current battery temperature and the same charging station, the allowable charging rate is lower when the battery has a high remaining charge and higher when the battery has a low remaining charge. The allowable charging rate in the second region is lower. If the allowable charging rate in the second region does not reach the initial average charging rate or the iterative average charging rate, then charging is performed according to the allowable charging rate. The non-adjustable charging time required in the second region is deducted from the user's expected remaining time. The current starting charge and the minimum remaining charge in the second region are used as the charge range. The iterative average charging power is calculated using the deducted time and the charge range. After dividing the charging rate into the first and second regions and completing the rate allocation, in the recommended charging rate-remaining charge data mapping relationship, the recommended charging rate for the first region is the iterative average charging rate, and the recommended charging rate for the second region is the allowable charging rate. The charging time is split, and the sum of the adjustable charging time spent in the first region and the non-adjustable charging time spent in the second region equals the user's expected remaining charging time. This ensures that the charging time equals the user's expected remaining charging time while ensuring that the recommended charging rate does not exceed the charging capacity of the second region.

[0030] In one possible embodiment, the battery fast charging control strategy further includes:

[0031] After completing the rate allocation, the battery thermal management status is controlled:

[0032] Obtain the battery thermal management operating status;

[0033] If the battery thermal management is currently in the heating function enabled state, the iterative average charging rate is compared with the preset rate threshold.

[0034] If the iterative average charging rate is greater than the preset rate threshold, the battery thermal management system will be controlled to turn off the heating function; otherwise, a control command for normal operation will be sent to the battery management system.

[0035] With this setup, during charging, the adaptive charging duration control strategy is executed cyclically at preset time intervals. If the estimated charging duration exceeds the user's desired remaining charging duration, charging is performed according to the allowed charging rate in the allowed charging rate-remaining capacity data mapping relationship. A normal operation control command is sent to the battery management system, causing the battery thermal management system to operate normally according to its own settings. Under low-temperature conditions, the battery temperature is raised to an optimal temperature range. The current battery temperature collected in the next cycle changes, and the allowed charging rate-remaining capacity data mapping relationship corresponding to the current battery temperature also changes, as does the current starting capacity. If the estimated charging duration calculated in this cycle meets the user's desired remaining charging duration, after completing the iterative allocation of the charging rate, the timing for prematurely shutting down the thermal management function is determined based on the comparison result between the iterative average charging rate and the preset rate threshold. The preset rate threshold is the calibrated value. Under extreme low temperature conditions, if the thermal management system heats the battery to raise its temperature so that the allowable charging rate rises to meet the requirements and then immediately stops the heating function, the battery temperature may be too low in a subsequent preset time period due to the low ambient temperature, causing the allowable charging rate to drop again. At this time, a control command for normal operation is sent to the battery management system, causing the battery thermal management system to start and stop frequently. Setting the preset rate threshold can reduce the occurrence of frequent start and stop problems.

[0036] In one possible embodiment, obtaining the allowable charge rate-remaining capacity data mapping relationship corresponding to the current battery temperature includes:

[0037] Obtain the permissible charging MAP table, which contains a data mapping relationship between battery temperature, permissible charging rate, and remaining capacity;

[0038] From the allowed charging MAP table, retrieve the allowed charging rate-remaining capacity data mapping relationship corresponding to the current battery temperature.

[0039] With this setup, the Permitted Charging MAP table stores the mapping relationship between the Permitted Charging Rate and Remaining Capacity at different temperatures. By matching the current battery temperature with the temperature in the table, the retrieved charging rate data is ensured to match the real-time operating state of the battery, providing reliable data support for subsequent charging time calculation, rate iteration optimization, and adaptive time control.

[0040] In one possible embodiment, obtaining the permitted charging MAP table includes:

[0041] Obtain a preset charging MAP table, which contains a data mapping relationship between battery temperature, charging rate and remaining power.

[0042] Obtain the maximum charging rate at the charging pile, replace all values ​​in the preset charging MAP table that have a charging rate greater than the maximum charging rate with the maximum charging rate, and generate a permitted charging MAP table.

[0043] With this setup, the preset charging MAP table is pre-stored data from the battery management system, containing a mapping relationship between the battery's maximum charging rate and remaining charge at different temperatures. By combining this with the maximum charging rate at the charging station, the original preset charging MAP table is adjusted to limit its operation. Charging rates exceeding the station's output capacity are uniformly replaced with the station's maximum permissible rate, generating a permissible charging MAP table. This ensures that the permissible charging rate is the maximum permissible charging rate at the current temperature, based on the charging performance of the vehicle's battery and the charging station. This avoids situations where the recommended charging rate exceeds the station's output capacity, resulting in charging time not meeting the user's expected remaining charging time. This provides reliable data support for all subsequent adaptive charging control strategies.

[0044] Different vehicle models and charging piles have different configurations. The data stored in the preset charging MAP table for some models may be the maximum charging current of the battery, while the performance parameters of some charging piles may be the maximum charging current at the charging pile. In this case, the following methods are used for data processing: obtain the rated capacity of the battery; convert the maximum charging current of the battery in the preset charging MAP table into the charging rate by calculating the ratio of the maximum charging current of each battery to the rated capacity of the battery; convert the maximum charging current at the charging pile into the maximum charging rate at the charging pile by calculating the ratio of the maximum charging current at the charging pile to the rated capacity of the battery.

[0045] In one possible embodiment, the adaptive charging time control strategy further includes: cyclically executing the adaptive charging time control strategy at preset time intervals.

[0046] With this setting, during charging, the adaptive control strategy for charging duration is executed cyclically at preset time intervals. This allows the control strategy to be changed in a timely manner after the battery temperature changes, further improving the accuracy of charging duration control.

[0047] In one possible embodiment, the adaptive charging duration control strategy further includes:

[0048] Based on the user's input command, obtain the charging end time;

[0049] Get the current time;

[0050] After allowing a time margin for the time difference between the charging end time and the current time, the user's expected remaining charging time is obtained.

[0051] The user's input command can be the charging end time set by the user through manual input or voice control on the vehicle's infotainment system or mobile terminal. Optionally, after charging starts, the charging duration adaptive control device determines the estimated charging duration based on the current starting power, the ending power, and the data mapping relationship between the allowable charging rate and the remaining power. Then, it pushes the estimated charging duration to the user's infotainment system or mobile terminal. The user can manually extend the charging duration. The infotainment system or mobile terminal confirms the charging end time based on the extended charging duration and feeds it back to the charging duration adaptive control device.

[0052] The user's input commands can also be: the vehicle or / and mobile terminal generate multiple push suggestion options for the end time of charging based on the user's trip plan and user charging habit schedule, and the user's selection of suggestion options is taken as the user's input command.

[0053] User-defined trip plans can be time-based plans created by users on mobile devices or in-vehicle devices. After obtaining user authorization to use the trip plan, the mobile device or in-vehicle device determines the power required for each segment of the trip based on the current remaining battery power, the vehicle's power consumption per unit, and the distance required for the trip plan. It then obtains the expected remaining power after each segment of the trip is completed. If the expected remaining power after a certain segment of the trip is lower than a preset threshold, a reminder is displayed on the user's trip plan, suggesting that the user charge. After the user connects to a charging station, the start time of the next segment of the trip is pushed to the user as a suggested end time for charging. For example, if a user's planned itinerary is "Date: First leg: Depart from home at 8:00 AM to work; Second leg: Travel to office in xx area at 1:00 PM; Third leg: Drive back to work at 3:00 PM; Fourth leg: Return home at 8:00 PM", and it is calculated that the battery level will be less than 10% after the third leg, the itinerary will be marked with a reminder to the user to charge. If the user connects to a charging station during the interval between the completion of the second leg and the start of the third leg, the charging end time of 3:00 PM on [Date] will be pushed to the user's vehicle and / or mobile device as a suggested option.

[0054] The user charging habit schedule can be a charging duration suggestion option generated by cloud-based statistics on user charging habits. Optionally, after obtaining user authorization, the charging locations of the user's vehicle and the corresponding vehicle dwell time at each charging location can be recorded and statistically analyzed. The average vehicle dwell time at each high-frequency charging location can be recorded. If the user's current charging location is one of the high-frequency charging locations, the charging end time can be calculated based on the current time and the average vehicle dwell time at that location, and then pushed to the user's vehicle and / or mobile terminal as a suggestion option.

[0055] Allowing for a time margin means charging to the end of the charge a certain amount of time in advance to prevent deviations in charging time due to charging fluctuations.

[0056] Secondly, this application provides a charging duration adaptive control device, the device comprising:

[0057] The information acquisition module is configured to: acquire the current battery temperature; acquire the allowable charging rate-remaining power data mapping relationship corresponding to the current battery temperature; acquire the current starting power and ending power of charging; and acquire the user's expected remaining charging time.

[0058] The data analysis module is configured to: determine the estimated charging time based on the current starting power level, the ending power level, and the data mapping relationship between the allowed charging rate and the remaining power level; compare the estimated charging time with the user's expected remaining charging time; if the estimated charging time is greater than the user's expected remaining charging time, issue a first control command; if the estimated charging time is greater than the user's expected remaining charging time, issue a second control command.

[0059] The execution module is configured to: upon receiving the first control instruction, control the vehicle battery to charge according to the allowable charging rate in the allowable charging rate-remaining power data mapping relationship, and issue a normal operation control instruction to the battery management system; upon receiving the second control instruction, control the vehicle battery to reduce the peak charging rate through rate allocation according to the battery fast charging control strategy, and issue an early shutdown control instruction to the battery thermal management system.

[0060] In one possible embodiment, the execution module is specifically configured as follows:

[0061] After receiving the second control command, calculate the average charging rate from the current starting power to the ending power within the user's expected remaining charging time, and use it as the initial average charging rate;

[0062] Compare the allowed charging rate in the allowed charging rate-remaining power data mapping relationship with the initial average charging rate;

[0063] If the allowed charging rate in the allowed charging rate-remaining power data mapping relationship is not less than the initial average charging rate, then the entire charging process will be carried out according to the initial average charging rate.

[0064] If the allowed charging rate in the allowed charging rate-remaining power data mapping relationship is less than the initial average charging rate, then the initial average charging rate is iteratively optimized to obtain an iterative average charging rate. Based on the iterative average charging rate and the allowed charging rate-remaining power data mapping relationship, a recommended charging rate-remaining power data mapping relationship is generated, and charging is performed according to the recommended charging rate in the recommended charging rate-remaining power data mapping relationship to complete the rate allocation.

[0065] In one possible embodiment, the execution module is specifically configured as follows:

[0066] After completing the rate allocation, the battery thermal management status is controlled:

[0067] Obtain the battery thermal management operating status;

[0068] If the battery thermal management is currently in the heating function enabled state, the iterative average charging rate is compared with the preset rate threshold.

[0069] If the iterative average charging rate is greater than the preset rate threshold, the battery thermal management system will be controlled to turn off the heating function; otherwise, a control command for normal operation will be sent to the battery management system.

[0070] Thirdly, this application provides a vehicle including a charging time adaptive control device.

[0071] The beneficial effects of this application are: This application can actively reduce the peak charging rate through rate allocation and exit the heating working state of battery thermal management in advance, which solves the problem that the traditional vehicle charging mode is fixed and cannot adapt to the user's personalized charging time needs. It can prevent battery aging damage caused by high-rate fast charging in scenarios where the user does not need to use the vehicle for a long period of time, while reducing the ineffective energy consumption of the thermal management system, taking into account both battery life protection and thermal management energy consumption optimization, and improving the flexibility and scenario adaptability of vehicle charging control. Attached Figure Description

[0072] To more clearly illustrate the technical solutions in the embodiments of this application or the background art, the accompanying drawings used in the embodiments of this application will be described below.

[0073] Figure 1 This is a schematic diagram of the architecture of the adaptive charging time control device disclosed in an embodiment of this application;

[0074] Figure 2 This is a flowchart illustrating the adaptive charging time control strategy disclosed in an embodiment of this application. Detailed Implementation

[0075] The terms "first," "second," etc., are used for descriptive purposes only and have no sequential or technical meaning, nor should they be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the embodiments of this application, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0076] The term "electrical connection" refers to the flow of current or signal from one conductor to another. An electrical connection between A and B means that current or signal can flow from A to B and vice versa. This connection includes direct and indirect electrical connections. A direct electrical connection between A and B means that A and B are physically connected. An indirect electrical connection between A and B means that A and B are connected via C, where C can be at least one wire or device.

[0077] The embodiments of this application are described below with reference to the accompanying drawings.

[0078] In this application's embodiments, the vehicle can be, but is not limited to, a pure electric vehicle / battery electric vehicle (PEV / BEV), a hybrid electric vehicle (HEV), a range-extended electric vehicle (REEV), a plug-in hybrid electric vehicle (PHEV), or a new energy vehicle. The vehicle in this application's embodiments includes a charging time adaptive control device.

[0079] Please see Figure 1 , Figure 1 This is a schematic diagram of the architecture of the adaptive charging time control device disclosed in the embodiments of this application. The adaptive charging time control device can interact with the vehicle system and mobile terminal and / or cloud, and can also interact with the battery management system and the battery thermal management system.

[0080] The adaptive charging time control device includes:

[0081] The information acquisition module is configured to: acquire the current battery temperature; acquire the allowable charging rate-remaining capacity data mapping relationship corresponding to the current battery temperature; acquire the current starting capacity and ending capacity of charging; and acquire the user's expected remaining charging time.

[0082] The data analysis module is configured to: determine the estimated charging time based on the current starting power, ending power, and the data mapping relationship between the allowed charging rate and the remaining power; compare the estimated charging time with the user's expected remaining charging time; if the estimated charging time is longer than the user's expected remaining charging time, issue a first control command; if the estimated charging time is longer than the user's expected remaining charging time, issue a second control command.

[0083] The execution module is configured to: upon receiving a first control command, control the vehicle battery to charge according to the allowable charging rate in the allowable charging rate-remaining capacity data mapping relationship, and issue a normal operation control command to the battery management system; upon receiving a second control command, control the vehicle battery to reduce the peak charging rate through rate allocation according to the battery fast charging control strategy, and issue an early shutdown control command to the battery thermal management system.

[0084] Optionally, the execution module is specifically configured as follows:

[0085] After receiving the second control command, calculate the average charging rate from the current starting power to the ending power within the user's expected remaining charging time, and use it as the initial average charging rate;

[0086] Compare the allowed charging rate in the allowed charging rate-remaining power data mapping relationship with the initial average charging rate;

[0087] If the allowed charging rate in the allowed charging rate-remaining power data mapping relationship is not less than the initial average charging rate, then the entire charging process will be carried out according to the initial average charging rate.

[0088] If the allowed charging rate in the allowed charging rate-remaining power data mapping relationship is less than the initial average charging rate, then the initial average charging rate is iteratively optimized to obtain an iterative average charging rate. Based on the iterative average charging rate and the allowed charging rate-remaining power data mapping relationship, a recommended charging rate-remaining power data mapping relationship is generated, and charging is performed according to the recommended charging rate in the recommended charging rate-remaining power data mapping relationship to complete the rate allocation.

[0089] Optionally, the execution module is specifically configured as follows:

[0090] After completing the rate allocation, the battery thermal management status is controlled:

[0091] Obtain the battery thermal management operating status;

[0092] If the battery thermal management is currently in the heating function enabled state, the iterative average charging rate is compared with the preset rate threshold.

[0093] If the iterative average charging rate is greater than the preset rate threshold, the battery thermal management system will be controlled to turn off the heating function; otherwise, a control command for normal operation will be sent to the battery management system.

[0094] Please see Figure 2 , Figure 2 This is a flowchart illustrating the adaptive charging time control strategy disclosed in an embodiment of this application. The adaptive charging time control strategy includes the following steps:

[0095] S1. Obtain the current battery temperature.

[0096] S2. Obtain the data mapping relationship between the allowable charging rate and the remaining power corresponding to the current battery temperature.

[0097] Step S2 specifically includes:

[0098] S201. Obtain the preset charging MAP table, which contains the data mapping relationship between battery temperature, charging rate and remaining power.

[0099] S202. Obtain the maximum charging rate at the charging pile end, replace all values ​​in the preset charging MAP table that have a charging rate greater than the maximum charging rate with the maximum charging rate, and generate the permitted charging MAP table.

[0100] S203. Obtain the permitted charging MAP table, which contains the data mapping relationship between battery temperature, permitted charging rate and remaining power.

[0101] S204. Retrieve the allowable charging rate-remaining capacity data mapping relationship corresponding to the current battery temperature from the allowable charging MAP table.

[0102] S3. Obtain the current starting charge level and the ending charge level.

[0103] S4. Based on the current starting power level, ending power level, and the data mapping relationship between the allowed charging rate and the remaining power level, determine the estimated charging time.

[0104] S5. Obtain the user's expected remaining charging time.

[0105] Step S5 specifically includes:

[0106] S501: Obtain the charging end time based on the user's input command.

[0107] S502, Get the current time.

[0108] S503: After reserving a time margin for the time difference between the charging end time and the current time, the user's expected remaining charging time is obtained.

[0109] S6. Compare the estimated charging time with the user's expected remaining charging time; if the estimated charging time is greater than the user's expected remaining charging time, proceed to S7; if the estimated charging time is not greater than the user's expected remaining charging time, proceed to S8.

[0110] S7. Charge according to the allowable charging rate in the allowable charging rate-remaining capacity data mapping relationship, and send a normal operation control command to the battery management system.

[0111] S8. According to the battery fast charging control strategy, the peak charging rate is reduced through rate allocation, and a control command to shut down the battery thermal management system in advance is sent. Optionally, step S8 specifically includes:

[0112] S801. Under the condition that the estimated charging time is not greater than the user's expected remaining charging time, calculate the average charging rate from the current starting power to the ending power within the user's expected remaining charging time, and use it as the initial average charging rate.

[0113] S802. Compare the allowed charging rate in the allowed charging rate-remaining power data mapping relationship with the initial average charging rate;

[0114] If the allowed charging rate in the allowed charging rate-remaining power data mapping relationship is not less than the initial average charging rate, then proceed to S803; if there is a allowed charging rate in the allowed charging rate-remaining power data mapping relationship that is less than the initial average charging rate, then proceed to S804.

[0115] S803: Charges at the initial average charging rate throughout the entire charging process;

[0116] S804. Iteratively optimize the initial average charging rate to obtain the iterative average charging rate. Based on the iterative average charging rate and the allowable charging rate-remaining capacity data mapping relationship, generate a recommended charging rate-remaining capacity data mapping relationship. Charge according to the recommended charging rate in the recommended charging rate-remaining capacity data mapping relationship to complete the rate allocation, and then proceed to step S805. Step S804 specifically includes:

[0117] S8041. Divide the allowable charging rate in the allowable charging rate-remaining power data mapping relationship into a first region and a second region. At this time, the allowable charging rate in the first region is not less than the initial average charging rate, and the allowable charging rate in the second region is less than the initial average charging rate.

[0118] S8042. Determine the minimum remaining power in the second region and calculate the non-adjustable charging time required from the minimum remaining power to the end of the charging process.

[0119] S8043. Subtract the non-adjustable charging time from the user's expected remaining charging time to obtain the adjustable charging time;

[0120] S8044. Calculate the average charging rate from the current starting power to the minimum remaining power within the adjustable charging time, and use it as the iterative average charging rate.

[0121] S8045. Compare the allowed charging rate in the first region of the allowed charging rate-remaining power data mapping relationship with the iterative average charging rate;

[0122] If there is a case in the first region where the allowed charging rate is less than the iterative average charging rate, then proceed to S8046; if all allowed charging rates in the first region are not less than the iterative charging rate, then proceed to S8047.

[0123] S8046. Based on the iterative average charging rate, re-divide the two regions of the allowable charging rate-remaining power data mapping relationship: the region with an allowable charging rate not less than the iterative average charging rate is the updated first region, and the region with an allowable charging rate less than the iterative average charging rate is the updated second region. Return to step S8042.

[0124] S8047. Replace the portion of the allowable charging rate that is greater than the iterative average charging rate in the allowable charging rate-remaining power data mapping relationship with the iterative average charging rate, generate the recommended charging rate-remaining power data mapping relationship, and charge according to the recommended charging rate in the recommended charging rate-remaining power data mapping relationship to complete the rate allocation, and then proceed to step S805.

[0125] S805. After completing the rate allocation, control the battery thermal management status:

[0126] S8051, Obtain the battery thermal management operating status;

[0127] S8052. If the battery thermal management is currently in the heating function enabled state, the iterative average charging rate is compared with the preset rate threshold; if the iterative average charging rate is greater than the preset rate threshold, the battery thermal management is controlled to turn off the heating function; otherwise, a normal operation control command is issued to the battery management system.

[0128] S9. After a preset time interval, return to step S1.

[0129] Both the current starting and ending battery levels refer to the remaining battery capacity. The permissible charging rate is the maximum allowable charging rate at the current temperature, derived from the charging performance of the vehicle battery and the charging station. The permissible charging rate-remaining battery capacity mapping relationship typically shows a lower permissible charging rate at higher battery levels and a higher permissible charging rate at lower battery levels, assuming the same current battery temperature and the same charging station. Different battery manufacturers use different permissible charging rate-remaining battery capacity mapping relationships, which can be presented as a MAP table or a charging rate curve.

[0130] With this setup, the estimated charging time for fast charging at the current battery temperature can be calculated by using the current battery temperature, power parameters, and the mapping relationship between the allowable charging rate and the remaining power. Since the allowable charging rate is the maximum charging rate allowed at the current temperature based on the charging performance of the vehicle battery and the charging station, the estimated charging time is the shortest time required to charge from the current starting power to the ending power while maintaining the current battery temperature. By comparing the estimated charging time with the user's expected remaining time, when the estimated charging time cannot meet the user's expectations, the system uses the allowed charging rate from the allowed charging rate-remaining capacity data mapping relationship for charging. It then sends a normal operation control command to the battery management system, enabling the battery thermal management system to operate normally according to its settings. In low-temperature conditions, it heats the battery to an optimal temperature range, typically 20℃-35℃, depending on the battery manufacturer's settings, to ensure charging efficiency. When the estimated charging time is not greater than the user's expected remaining charging time, indicating that charging at the allowed charging rate results in excessive charging time and excessively fast charging, the system proactively reduces the peak charging rate through rate allocation and exits the heating state of the battery thermal management system early. This solves the problem of traditional vehicle charging modes being fixed and unable to adapt to users' personalized charging time needs. It prevents battery aging damage caused by high-rate fast charging in scenarios where the user does not need to use the vehicle for an extended period, while reducing ineffective energy consumption of the thermal management system. It balances battery life protection and thermal management energy consumption optimization, improving the flexibility and scenario adaptability of vehicle charging control.

[0131] The following is an example illustrating the adaptive charging time control strategy:

[0132] S1. Obtain the current battery temperature. For example, the current battery temperature is 20℃.

[0133] S2. Obtain the data mapping relationship between the allowable charging rate and the remaining power corresponding to the current battery temperature.

[0134] S201. Obtain the preset charging MAP table. The preset charging MAP table contains a data mapping relationship between battery temperature, charging rate, and remaining capacity. The preset charging MAP table can be found in the table below. The table below is for illustrative purposes only and not a specific limitation.

[0135] .

[0136] S202. Obtain the maximum charging rate at the charging pile. Replace all values ​​in the preset charging MAP table where the charging rate is greater than the maximum charging rate with the maximum charging rate to generate a permitted charging MAP table. Taking a maximum charging rate of 2C at the charging pile as an example, replace "3C" in the table above with "2C" in the table below. The permitted charging MAP table is shown below, but it is for illustrative purposes only and not a specific limitation.

[0137] .

[0138] Different vehicle models and charging piles have different configurations. The data stored in the preset charging MAP table for some models may be the maximum charging current of the battery, while the performance parameters of some charging piles may be the maximum charging current at the charging pile. In this case, the following methods are used for data processing: obtain the rated capacity of the battery; convert the maximum charging current of the battery in the preset charging MAP table into the charging rate by calculating the ratio of the maximum charging current of each battery to the rated capacity of the battery; convert the maximum charging current at the charging pile into the maximum charging rate at the charging pile by calculating the ratio of the maximum charging current at the charging pile to the rated capacity of the battery.

[0139] S203. Obtain the permitted charging MAP table, which contains the data mapping relationship between battery temperature, permitted charging rate and remaining power.

[0140] S204. From the Permitted Charging MAP table, retrieve the Permitted Charging Rate-Remaining Capacity data mapping relationship corresponding to the current battery temperature. Here, "corresponding" does not mean that the temperature is exactly the same. It can be a value that is closer to the current temperature. For example, if the current battery temperature is 21°C, and there is no "21°C" in the Permitted Charging MAP table, then "20°C" is used; if the current battery temperature is 29°C, and there is no "29°C" in the Permitted Charging MAP table, then "25°C" is used.

[0141] Taking a current battery temperature of 20℃ as an example, the following table shows the mapping relationship between allowable charging rate and remaining power corresponding to a battery temperature of 20℃.

[0142] .

[0143] S3. Obtain the current starting charge level and the ending charge level.

[0144] The current starting battery level is the collected battery data, and the ending battery level is the user-set or system-default expected remaining battery level at the end. For example: the current starting battery level is 35%, and the ending battery level is 90%.

[0145] S4. Based on the current starting power level, ending power level, and the data mapping relationship between the allowed charging rate and the remaining power level, determine the estimated charging time.

[0146] The charging rate refers to the current required to charge a battery to its rated capacity within a specified time. It is numerically equal to a multiple of the battery's rated capacity. For example, 2C means that it takes 0.5 hours to fully charge the battery, and 1C means that it takes 1 hour to fully charge the battery.

[0147] Different battery manufacturers have different mapping relationships between permissible charging rate and remaining capacity data. This mapping can be in the form of a MAP table or a charging rate curve. If it's a charging rate curve, integration is required. If it's the permissible charging rate-remaining capacity data mapping relationship corresponding to a battery temperature of 20°C as shown in S204 of this embodiment, the method is to calculate the charging time for each remaining capacity interval and then sum them, as shown below:

[0148] The current battery temperature is 20℃. The initial charge level is 35%, and the ending charge level is 90%. The time taken to reach 35%-40% is 0.05 / 2 = 0.025h, or 1.5min; the time taken to reach 40%-50% is 0.1 / 2 = 0.05h, or 3min; the time taken to reach 50%-60% is 0.1 / 2 = 0.05h, or 3min; the time taken to reach 60%-70% is 0.1 / 2 = 0.05h, or 3min; the time taken to reach 70%-80% is 0.1 / 1.5 = 2 / 3h, or 4min; and the time taken to reach 80%-90% is 0.1 / 1.2 = 1 / 12h, or 5min. Therefore, the estimated charging time is 1.5min + 3min + 3min + 3min + 4min + 5min = 19.5min.

[0149] S5. Obtain the user's expected remaining charging time.

[0150] Step S5 specifically includes:

[0151] S501: Obtain the charging end time based on the user's input command.

[0152] The user's input command can be the charging end time set manually or by voice control on the vehicle's infotainment system or mobile terminal. Optionally, after charging begins, the adaptive charging time control device determines the estimated charging time based on the current starting and ending battery levels and the mapping relationship between the allowable charging rate and remaining battery level. The estimated charging time is then pushed to the user's vehicle's infotainment system or mobile terminal. The user can manually extend the charging time, and the infotainment system or mobile terminal confirms the charging end time based on the extended charging time and feeds it back to the adaptive charging time control device. For example, if a user connects their vehicle to a commercial charging station at 11:00 AM on a certain date, the adaptive charging time control device calculates a charging time of 19.5 minutes and an estimated charging end time of 11:19:30 AM on a certain date. If the user expects to return in 0.5 hours, they can manually adjust the charging end time on the vehicle's infotainment system to 11:30 AM on a certain date.

[0153] It is worth noting that determining the charging end time here facilitates the recalculation of the user's expected remaining charging time when implementing a periodic adaptive charging duration control strategy. The charging end time is the same for each cycle, but different for the current time.

[0154] The user's input commands can also be: the vehicle or / and mobile terminal generate multiple push suggestion options for the end of charging based on the trip plan formulated and authorized by the user, or based on the user's charging habit schedule recorded and statistically obtained after user authorization, and the user's selection of the suggestion options is taken as the user's input command.

[0155] S502. Obtain the current time. The current time is 11:00 AM on [Year] [Month] [Day], as mentioned above.

[0156] S503: After reserving a time margin for the time difference between the charging end time and the current time, the user's expected remaining charging time is obtained.

[0157] If the time difference between the end of charging and the current time is 30 minutes, and the reserved time margin is 3 minutes, then 27 minutes will be taken as the user's expected remaining charging time.

[0158] S6. Compare the estimated charging time with the user's expected remaining charging time; the estimated charging time is 19.5 min, which is not greater than the user's expected remaining charging time of 27 min, so proceed directly to S8.

[0159] S8. According to the battery fast charging control strategy, the peak charging rate is reduced through rate allocation, and a control command to shut down the battery thermal management system in advance is sent. Optionally, step S8 specifically includes:

[0160] S801. Under the condition that the estimated charging time is not greater than the user's expected remaining charging time, calculate the average charging rate corresponding to charging from the current starting power of 35% to the ending power of 90% within the user's expected remaining charging time of 27 minutes (i.e. 0.45h), and use it as the initial average charging rate. When calculating, it is preferable to round up and retain three decimal places. Based on the allowable charging rate-remaining power data mapping relationship corresponding to the battery temperature of 20℃ in S204, the initial average charging rate is (0.9-0.35) / 0.45≈1.223C.

[0161] S802. Compare the allowable charging rate in the allowable charging rate-remaining power data mapping relationship with the initial average charging rate of 1.223C;

[0162] If the allowed charging rate in the allowed charging rate-remaining power data mapping relationship is not less than the initial average charging rate, then proceed to S803; if there is a allowed charging rate in the allowed charging rate-remaining power data mapping relationship that is less than the initial average charging rate, then proceed to S804.

[0163] When the initial average charging rate is 1.223C, based on the allowable charging rate-remaining capacity data mapping relationship shown in S204 corresponding to a battery temperature of 20°C, the end capacity is 90%. Without considering the remaining capacity range of 90%-100%, the allowable charging rate of 1.2C corresponding to the remaining capacity range of 80%-90% does not meet the initial average charging rate. Therefore, proceed to step S804.

[0164] S804. Iteratively optimize the initial average charging rate to obtain the iterative average charging rate. Based on the iterative average charging rate and the allowable charging rate-remaining capacity data mapping relationship, generate a recommended charging rate-remaining capacity data mapping relationship. Charge according to the recommended charging rate in the recommended charging rate-remaining capacity data mapping relationship to complete the rate allocation, and then proceed to step S805. Step S804 specifically includes:

[0165] S8041. Divide the allowable charging rate in the allowable charging rate-remaining power data mapping relationship into a first region and a second region. At this time, the allowable charging rate in the first region is not less than the initial average charging rate, and the allowable charging rate in the second region is less than the initial average charging rate.

[0166] The permitted charging rate in the first area is the portion with 0-80% remaining charge, and the permitted charging rate in the second area is the portion with 80-100% remaining charge.

[0167] S8042. Determine the minimum remaining power in the second region and calculate the non-adjustable charging time required from the minimum remaining power to the end of the charging process.

[0168] The minimum remaining battery level in the second zone is 80%, and the end battery level is 90%. The calculated non-adjustable charging time is 0.1 / 1.2 = 1 / 12h, which is 5 minutes.

[0169] S8043. Subtract the non-adjustable charging time of 5 minutes from the user's expected remaining charging time of 27 minutes to obtain an adjustable charging time of 22 minutes.

[0170] S8044. Calculate the average charging rate corresponding to charging from the current initial power of 35% to the minimum remaining power of 80% within the adjustable charging time of 22 min (i.e. 11 / 30h). Use this as the iterative average charging rate. When calculating, it is preferable to round up and retain three decimal places.

[0171] The average charging rate of the iteration is approximately (80%-35%) / (11 / 30)≈1.228C.

[0172] S8045. Compare the allowable charging rate belonging to the first region in the allowable charging rate-remaining power data mapping relationship with the iterative average charging rate of 1.228C;

[0173] If all permissible charging rates in the first region are not less than the iterative charging rate of 1.228C, no further iterative optimization is needed, and then proceed to S8047.

[0174] S8047. Replace the portion of the allowable charging rate that is greater than the iterative average charging rate of 1.228C in the allowable charging rate-remaining capacity data mapping relationship corresponding to a battery temperature of 20℃ with the iterative average charging rate of 1.228C, generate the recommended charging rate-remaining capacity data mapping relationship as shown in the table below, and charge according to the recommended charging rate in the recommended charging rate-remaining capacity data mapping relationship to complete the rate allocation, and then proceed to step S805.

[0175] .

[0176] Here's the verification: The initial battery level was 35%, and the ending battery level was 90%. The actual time spent in the 35%-90% range was: (0.8-0.35) / 1.228 + (0.9-0.8) / 1.2 ≈ 0.4498h ≈ 26.99min, which is basically the same as the user's expected remaining charging time of 27min.

[0177] S805. After completing the rate allocation, control the battery thermal management status:

[0178] S8051, Obtain the battery thermal management operating status;

[0179] S8052. If the battery thermal management is currently in the heating function enabled state, the iterative average charging rate of 1.228C is compared with the preset rate threshold of 1C; if the iterative average charging rate of 1.228C is greater than the preset rate threshold of 1C, the battery thermal management is controlled to turn off the heating function.

[0180] S9. After a preset time period, return to step S1. The preset time period can be 0.5 min.

[0181] It should be understood that the application of this application is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims. Those skilled in the art can understand that implementing all or part of the processes of the above embodiments and making equivalent changes according to the claims of this application still fall within the scope of this application.

Claims

1. A charging duration adaptive control strategy, characterized in that, include: Get the current battery temperature; Obtain the data mapping relationship between the allowable charging rate and the remaining battery capacity corresponding to the current battery temperature; Get the current starting and ending charge levels; Based on the current starting power level, the ending power level, and the data mapping relationship between the allowable charging rate and the remaining power level, the estimated charging time is determined. Obtain the user's expected remaining charging time; Compare the estimated charging time with the user's expected remaining charging time; If the estimated charging time is greater than the user's expected remaining charging time, then charging is performed according to the allowed charging rate in the allowed charging rate-remaining power data mapping relationship, and a normal operation control command is sent to the battery management system. If the estimated charging time is not greater than the user's expected remaining charging time, then according to the battery fast charging control strategy, the peak charging rate is reduced through rate allocation, and a control command to shut down the battery thermal management system in advance is sent.

2. The adaptive charging time control strategy according to claim 1, characterized in that, The battery fast charging control strategy includes: Under the condition that the estimated charging time is not greater than the user's expected remaining charging time, the average charging rate corresponding to the charging from the current starting power to the ending power within the user's expected remaining charging time is calculated as the initial average charging rate. Compare the allowed charging rate in the allowed charging rate-remaining power data mapping relationship with the initial average charging rate; If the allowed charging rate in the allowed charging rate-remaining power data mapping relationship is not less than the initial average charging rate, then the entire charging process will be carried out according to the initial average charging rate. If the allowed charging rate in the allowed charging rate-remaining power data mapping relationship is less than the initial average charging rate, then the initial average charging rate is iteratively optimized to obtain an iterative average charging rate. Based on the iterative average charging rate and the allowed charging rate-remaining power data mapping relationship, a recommended charging rate-remaining power data mapping relationship is generated, and charging is performed according to the recommended charging rate in the recommended charging rate-remaining power data mapping relationship to complete the rate allocation.

3. The adaptive charging time control strategy according to claim 2, characterized in that, The process involves iteratively optimizing the initial average charging rate to obtain an iterative average charging rate. Based on this iterative average charging rate and the allowed charging rate-remaining capacity data mapping relationship, a recommended charging rate-remaining capacity data mapping relationship is generated. Charging is then performed according to the recommended charging rate in this mapping relationship to complete the rate allocation. This includes: The allowed charging rate in the allowed charging rate-remaining power data mapping relationship is divided into a first region and a second region. At this time, the allowed charging rate in the first region is not less than the initial average charging rate, and the allowed charging rate in the second region is less than the initial average charging rate. Determine the minimum remaining power in the second region, and calculate the non-adjustable charging time required to charge from the minimum remaining power to the final power level; The adjustable charging time is obtained by subtracting the non-adjustable charging time from the user's expected remaining charging time. Calculate the average charging rate corresponding to charging from the current starting power to the minimum remaining power within the adjustable charging time, and use it as the iterative average charging rate; Compare the allowed charging rate belonging to the first region in the allowed charging rate-remaining power data mapping relationship with the iterative average charging rate; If there is a case in the first region where the allowed charging rate is less than the iterative average charging rate, then the following steps are repeated: the two regions of the allowed charging rate-remaining power data mapping relationship are re-divided according to the iterative average charging rate: the region where the allowed charging rate is not less than the iterative average charging rate is the updated first region, and the region where the allowed charging rate is less than the iterative average charging rate is the updated second region. The minimum remaining power of the second region is then re-determined, the non-adjustable charging time is recalculated, the adjustable charging time is recalculated, the iterative average charging rate is recalculated, and the rate comparison process is repeated. If all permissible charging rates in the first region are not less than the iterative charging rate, then the portion of the permissible charging rate in the permissible charging rate-remaining power data mapping relationship that is greater than the iterative average charging rate is replaced with the iterative average charging rate, generating a recommended charging rate-remaining power data mapping relationship, and charging is performed according to the recommended charging rate in the recommended charging rate-remaining power data mapping relationship to complete the rate allocation.

4. The adaptive charging time control strategy according to claim 3, characterized in that, The battery fast charging control strategy also includes: After completing the rate allocation, the battery thermal management status is controlled: Obtain the battery thermal management operating status; If the battery thermal management is currently in the heating function enabled state, the iterative average charging rate is compared with the preset rate threshold. If the iterative average charging rate is greater than the preset rate threshold, the battery thermal management system will be controlled to turn off the heating function; otherwise, a control command for normal operation will be sent to the battery management system.

5. The adaptive charging time control strategy according to claim 1, characterized in that, The step of obtaining the allowable charging rate-remaining capacity data mapping relationship corresponding to the current battery temperature includes: Obtain the permissible charging MAP table, which contains a data mapping relationship between battery temperature, permissible charging rate, and remaining capacity; From the allowed charging MAP table, retrieve the allowed charging rate-remaining capacity data mapping relationship corresponding to the current battery temperature.

6. The adaptive charging time control strategy according to claim 5, characterized in that, The acquisition of the permitted charging MAP table includes: Obtain a preset charging MAP table, which contains a data mapping relationship between battery temperature, charging rate and remaining power. Obtain the maximum charging rate at the charging pile, replace all values ​​in the preset charging MAP table that have a charging rate greater than the maximum charging rate with the maximum charging rate, and generate a permitted charging MAP table.

7. The adaptive charging time control strategy according to claim 1, characterized in that, Also includes: The adaptive charging duration control strategy is executed cyclically at preset time intervals.

8. The adaptive charging time control strategy according to claim 1, characterized in that, Also includes: Based on the user's input command, obtain the charging end time; Get the current time; After allowing a time margin for the time difference between the charging end time and the current time, the user's expected remaining charging time is obtained.

9. A charging duration adaptive control device, characterized in that, The device includes: The information acquisition module is configured to: acquire the current battery temperature; acquire the allowable charging rate-remaining power data mapping relationship corresponding to the current battery temperature; acquire the current starting power and ending power of charging; and acquire the user's expected remaining charging time. The data analysis module is configured to: determine the estimated charging time based on the current starting power level, the ending power level, and the data mapping relationship between the allowed charging rate and the remaining power level; compare the estimated charging time with the user's expected remaining charging time; if the estimated charging time is greater than the user's expected remaining charging time, issue a first control command; if the estimated charging time is greater than the user's expected remaining charging time, issue a second control command. The execution module is configured to: upon receiving the first control instruction, control the vehicle battery to charge according to the allowable charging rate in the allowable charging rate-remaining power data mapping relationship, and issue a normal operation control instruction to the battery management system; upon receiving the second control instruction, control the vehicle battery to reduce the peak charging rate through rate allocation according to the battery fast charging control strategy, and issue an early shutdown control instruction to the battery thermal management system.

10. The adaptive charging time control device according to claim 9, characterized in that, The execution module is specifically configured as follows: After receiving the second control command, calculate the average charging rate from the current starting power to the ending power within the user's expected remaining charging time, and use it as the initial average charging rate; Compare the allowed charging rate in the allowed charging rate-remaining power data mapping relationship with the initial average charging rate; If the allowed charging rate in the allowed charging rate-remaining power data mapping relationship is not less than the initial average charging rate, then the entire charging process will be carried out according to the initial average charging rate. If the allowed charging rate in the allowed charging rate-remaining power data mapping relationship is less than the initial average charging rate, then the initial average charging rate is iteratively optimized to obtain an iterative average charging rate. Based on the iterative average charging rate and the allowed charging rate-remaining power data mapping relationship, a recommended charging rate-remaining power data mapping relationship is generated, and charging is performed according to the recommended charging rate in the recommended charging rate-remaining power data mapping relationship to complete the rate allocation.

11. The adaptive charging time control device according to claim 10, characterized in that, The execution module is specifically configured as follows: After completing the rate allocation, the battery thermal management status is controlled: Obtain the battery thermal management operating status; If the battery thermal management is currently in the heating function enabled state, the iterative average charging rate is compared with the preset rate threshold. If the iterative average charging rate is greater than the preset rate threshold, the battery thermal management system will be controlled to turn off the heating function; otherwise, a control command for normal operation will be sent to the battery management system.

12. A vehicle, characterized in that, Includes the charging time adaptive control device as described in any one of claims 9-11.

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