Temperature control method and device for vehicle power battery, vehicle and storage medium

Abstract

The invention relates to a temperature control method and device for a vehicle power battery, a vehicle and a storage medium, and the method comprises the steps: calculating the time for heating the vehicle power battery from the current temperature to a target charging temperature when the current temperature of the vehicle power battery is lower than a preset temperature, and obtaining a target heating duration; determining a target charging station from historical charging station information of a pre-constructed user charging database according to the current vehicle information, and calculating the predicted time length and predicted electricity consumption of the vehicle from the current position to the target charging station; and on the basis of the target heating duration, the current time point, the historical charging behavior data, the predicted duration and the predicted electricity consumption, judging that the current time point meets a time point for starting battery heating, generating battery heating reminding information, and sending the battery heating reminding information to a user terminal corresponding to the vehicle. The user is reminded to start the battery heating function in time, and the charging efficiency of the vehicle under the low-temperature condition is improved.

Description

Technical Field

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

[0002] The electrification of vehicles has become an inevitable trend in the current industry. With the rapid development of new energy vehicles, industry upgrades and policy support, more and more consumers have chosen pure electric vehicles as their means of travel. The charging problem of electric vehicles has long been the top of the list of user complaints, especially the slow charging in winter. Since batteries are chemical bodies, they are sensitive to temperature. The charging performance of power batteries varies greatly at different temperatures, resulting in much worse charging performance at low temperatures than at normal temperatures, and longer charging time.

[0003] How to improve the charging efficiency of vehicles under low temperature conditions is a technical issue. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a temperature control method, device, vehicle and storage medium for a vehicle power battery, which can improve the charging efficiency of the vehicle under low temperature conditions.

[0005] In order to solve the above technical problems, an embodiment of the present application provides a temperature control method for a vehicle power battery, comprising:

[0006] When the current temperature of the vehicle power battery is lower than a preset temperature, calculating the time it takes for the vehicle power battery to heat from the current temperature to a target charging temperature to obtain a target heating time;

[0007] Acquire current vehicle information and current location of the vehicle on which the vehicle power battery is installed, determine a target charging station from historical charging station information in a pre-built user charging database according to the current location, and calculate a predicted duration and predicted power consumption of the vehicle from the current location to the target charging station according to the current vehicle information;

[0008] The current time point and the historical charging behavior data in the user charging database are obtained, and based on the target heating duration, the current time point, the historical charging behavior data, the predicted duration and the predicted power consumption, it is determined that the current time point meets the time point for starting battery heating, and battery heating reminder information is generated, and the battery heating reminder information is sent to the user terminal corresponding to the vehicle.

[0009] In order to solve the above technical problems, the embodiment of the present application provides a temperature control device for a vehicle power battery, comprising:

[0010] a heating time calculation unit, configured to calculate the time it takes for the vehicle power battery to be heated from the current temperature to the target charging temperature when the current temperature of the vehicle power battery is lower than a preset temperature, so as to obtain a target heating time;

[0011] a predicted duration calculation unit, configured to obtain current vehicle information and a current position of a vehicle on which the vehicle power battery is installed, determine a target charging station from historical charging station information in a pre-built user charging database according to the current position, and calculate a predicted duration and predicted power consumption of the vehicle from the current position to the target charging station according to the current vehicle information;

[0012] A start-up time judgment unit is used to obtain the current time point and the historical charging behavior data in the user charging database, and judge that the current time point meets the time point for starting battery heating based on the target heating duration, the current time point, the historical charging behavior data, the predicted duration and the predicted power consumption, and generate battery heating reminder information, and send the battery heating reminder information to the user terminal corresponding to the vehicle.

[0013] To solve the above technical problems, an embodiment of the present application provides a vehicle, including one or more processors; a memory for storing one or more programs, so that the one or more processors implement the temperature control method of the vehicle power battery described in any one of the above.

[0014] In order to solve the above technical problems, an embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the temperature control method of the vehicle power battery described in any one of the above is implemented.

[0015] The embodiment of the present application provides a temperature control method, device, vehicle and storage medium for a vehicle power battery. The method includes: when the current temperature of the vehicle power battery is lower than the preset temperature, calculating the time for the vehicle power battery to heat from the current temperature to the target charging temperature to obtain the target heating time; obtaining the current vehicle information and current position of the vehicle on which the vehicle power battery is installed, determining the target charging station from the historical charging station information in the pre-built user charging database according to the current position, and calculating the predicted time and predicted power consumption of the vehicle from the current position to the target charging station according to the current vehicle information; obtaining the current time point and the historical charging behavior data in the user charging database, and judging whether the current time point meets the time point for starting battery heating based on the target heating time, the current time point, the historical charging behavior data, the predicted time and the predicted power consumption, and generating battery heating reminder information, and sending the battery heating reminder information to the user terminal corresponding to the vehicle. The embodiment of the present invention can calculate the time for the power battery to be heated from the current temperature to the target charging temperature, and can determine whether the current time meets the time point for starting battery heating. If the battery heating reminder information can be sent to the user terminal corresponding to the vehicle, the user can be reminded in time to turn on the battery heating function, avoiding the need to start charging the vehicle from a low temperature state, thereby improving the charging efficiency of the vehicle under low temperature conditions, reducing the charging waiting time, reducing the vehicle's stay time at the charging pile, and improving the utilization efficiency of the charging station. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the scheme in the present application, a brief introduction is given below to the drawings required for use in the description of the embodiments of the present application. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a flow chart of an implementation of the temperature control method for a vehicle power battery provided in an embodiment of the present application;

[0018] Figure 2 It is a flow chart for implementing a sub-process in the temperature control method of a vehicle power battery provided in an embodiment of the present application;

[0019] Figure 3 is a flow chart for implementing a sub-process in a temperature control method for a vehicle power battery provided in another embodiment of the present application;

[0020] Figure 4 It is a flow chart for implementing a sub-process in the temperature control method of a vehicle power battery provided in an embodiment of the present application;

[0021] Figure 5 It is a flow chart for implementing a sub-process in the temperature control method of a vehicle power battery provided in an embodiment of the present application;

[0022] Figure 6 It is a flow chart for implementing a sub-process in the temperature control method of a vehicle power battery provided in an embodiment of the present application;

[0023] Figure 7 It is a flow chart for implementing a sub-process in the temperature control method of a vehicle power battery provided in an embodiment of the present application;

[0024] Figure 8 is a schematic diagram of a temperature control device for a vehicle power battery provided in an embodiment of the present application;

[0025] Fig. 9 It is a schematic diagram of a vehicle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the present application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "including" and "having" and any variations thereof in the specification and claims of the present application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0027] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0028] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0029] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0030] It should be noted that the temperature control method of the vehicle power battery provided in the embodiment of the present application is generally executed by the vehicle, and accordingly, the temperature control device of the vehicle power battery is generally configured in the vehicle.

[0031] See also Figure 1 , Figure 1 A specific implementation of a temperature control method for a vehicle power battery is shown.

[0032] It should be noted that if there are substantially the same results, the method of the present invention is not limited to Figure 1 The process sequence shown is limited to the following steps:

[0033] S1: When the current temperature of the vehicle power battery is lower than a preset temperature, the time for the vehicle power battery to be heated from the current temperature to a target charging temperature is calculated to obtain a target heating time.

[0034] Specifically, since the power battery is a chemical body, it is relatively sensitive to temperature. The charging performance of the power battery varies greatly at different temperatures, resulting in poor charging performance of the vehicle at low temperatures compared to normal temperatures, and longer charging time. Therefore, in the embodiment of the present application, when it is detected that the current temperature of the power battery is lower than the preset temperature, the time it takes to heat the power battery from the current temperature to the target charging temperature is calculated to obtain the target heating time.

[0035] Furthermore, heating time reminder information is generated based on the target heating time, and the heating time reminder information is sent to a user terminal corresponding to the vehicle to remind the user terminal that the power battery temperature is low at this time.

[0036] It should be noted that the preset temperature is set according to actual conditions and is not limited here. In a specific embodiment, when the current temperature of the power battery is lower than zero degrees Celsius, the time it takes for the power battery to heat from the current temperature to the target charging temperature is calculated to obtain the target heating time.

[0037] See also Figure 2 , Figure 2 A specific implementation of step S1 is shown, which is described in detail as follows:

[0038] S11: When the current temperature of the vehicle power battery is lower than the preset temperature, obtaining the battery temperature rise rate and the target charging temperature of the vehicle.

[0039] Wherein, the battery temperature rise rate is the temperature rise rate of the vehicle power battery at different ambient temperatures calculated by pre-testing;

[0040] S12: Calculate the time it takes for the vehicle power battery to heat from the current temperature to the target charging temperature based on the current temperature, the target charging temperature and the battery heating rate using a preset formula to obtain the target heating time.

[0041] Specifically, before implementing step S11, the battery heating rate of the vehicle under different ambient temperatures can be measured experimentally. When the current temperature of the power battery is lower than the preset temperature, the battery heating rate and the target charging temperature of the vehicle are obtained, and the time for the power battery to heat from the current temperature to the target charging temperature is calculated using a preset formula based on the current temperature, the target charging temperature and the battery heating rate to obtain the target heating time. The target charging temperature is the temperature at which the vehicle is most efficient when charging, and the vehicle can be tested in advance to obtain this temperature.

[0042] The preset formula is t heat =(T1-T0) / λ T , t heat is the target heating time, T1 is the target charging temperature, T0 is the current temperature, λ T is the battery heating rate.

[0043] Furthermore, another method for obtaining the target heating time is provided: a temperature rise curve is drawn with the horizontal axis time and the vertical axis temperature representing the heating performance, and the horizontal axis time difference between the corresponding points of the current temperature and the target charging temperature is confirmed in the temperature rise curve to obtain the target heating time.

[0044] See also Figure 3 , Figure 3 A specific implementation method before step S1 is shown, which is described in detail as follows:

[0045] S1A: If it is detected that the vehicle is navigating to a charging station, the current departure time, the current departure position, the charging station information and the remaining power during charging are obtained.

[0046] S1B: storing the current departure time point, the current departure location, the charging station information and the remaining power during charging in the user charging database.

[0047] S1C: If it is detected that the vehicle is not navigating to the charging station, record the departure position and departure time of the vehicle each time the vehicle is engaged in a forward gear.

[0048] S1D: If it is detected that the vehicle starts to charge, the charging station information and the remaining power during charging are obtained, the target charging station information and the target remaining power are obtained, and the departure location and departure time that meet the preset conditions are obtained, and the target departure time and target departure location are obtained.

[0049] S1E: Storing the target charging station information, the target remaining power, the target departure time, and the target departure location in the user charging database.

[0050] Specifically, before implementing step S1, the embodiment of the present application first constructs a user charging database corresponding to each vehicle. The embodiment of the present application needs to obtain user charging behavior information, which includes the departure location, departure time, remaining power during charging, and charging location of the charging trip, and establish a user charging database for subsequent analysis of user charging rules. Specifically, if it is detected that the vehicle is navigating to the charging station, the current departure time point, the current departure location, the charging station information, and the remaining power during charging are obtained, and the current departure time point, the current departure location, the charging station information, and the remaining power during charging are stored in the user charging database. If it is detected that the vehicle is not navigating to the charging station, the departure location and departure time of the vehicle are recorded each time the forward gear is engaged, that is, each time the vehicle is detected to be engaged in the D gear, the departure location and departure time of the vehicle at this time are recorded. If it is detected that the vehicle starts charging, the charging station information and the remaining power during charging are obtained, the target charging station information and the target remaining power are obtained, and the departure location and departure time that meet the preset conditions are obtained, the target departure time and the target departure location are obtained, and the target charging station information, the target remaining power, the target departure time, and the target departure location are stored in the user charging database.

[0051] See also Figure 4 , Figure 4 A specific implementation of step S1D is shown, which is described in detail as follows:

[0052] S1D1: If it is detected that the vehicle starts to charge, the charging station information and the remaining power during charging are obtained, and the target charging station information and the target remaining power are obtained.

[0053] S1D2: Obtain the departure position and departure time when the forward gear is engaged for a preset number of times, and obtain the initial departure position and initial departure time.

[0054] S1D3: Determine whether the initial starting position when the forward gear is engaged satisfies the requirement of being greater than a preset distance and whether the difference between the initial starting time and the time when the vehicle starts charging is the smallest. If so, use the initial starting position and the initial starting time as the target starting time and the target starting position, respectively.

[0055] Specifically, if it is detected that the vehicle is not navigating to the charging station, the departure position and departure time of each time the vehicle is in forward gear are recorded. When the vehicle arrives at the charging station, the departure position and departure time of the vehicle in forward gear may have been recorded many times, so it is necessary to filter these records to obtain the target departure time and target departure position. Therefore, the departure position and departure time of the vehicle in forward gear are obtained for a preset number of times to obtain the initial departure position and initial departure time. Then, it is determined whether the initial departure position when the forward gear is engaged satisfies the requirement of being greater than the preset distance and the time difference between the initial departure time and the time when the vehicle starts charging is the smallest. If so, the initial departure position and initial departure time are used as the target departure time and target departure position, respectively.

[0056] It should be noted that the preset number of times and the preset distance are set according to actual conditions and are not limited here.

[0057] S2: Obtain the current vehicle information and current position of the vehicle on which the vehicle power battery is installed, determine the target charging station from the historical charging station information of a pre-built user charging database according to the current position, and calculate the predicted duration and predicted power consumption of the vehicle from the current position to the target charging station according to the current vehicle information.

[0058] Specifically, the current vehicle information and current location of the vehicle are obtained, the charging station closest to the current location is obtained from the historical charging station information obtained from the pre-built user charging database as the target charging station, and the predicted time and predicted power consumption of the vehicle from the current location to the target charging station are calculated.

[0059] Among them, the current vehicle information includes the current remaining battery power, total battery power and vehicle energy consumption.

[0060] See also Figure 5 , Figure 5 A specific implementation of step S2 is shown, which is described in detail as follows:

[0061] S21: Obtain the current remaining battery power, the total battery power and the vehicle energy consumption of the vehicle installed with the vehicle power battery.

[0062] S22: Acquire the charging station closest to the current location from the historical charging station information in the user charging database as the target charging station.

[0063] S23: Calculate the distance from the current position to the target charging station to obtain a target distance.

[0064] S24: Calculate the predicted duration of the vehicle from the current position to the target charging station according to the target distance.

[0065] S25: Calculate the predicted power consumption of the vehicle from the current position to the target charging station based on the target distance, the vehicle energy consumption and the total battery power.

[0066] Specifically, since the user charging database stores the charging station information of the user's previous vehicle charging, that is, the historical charging station information, the charging station closest to the current location of the vehicle is obtained from the historical charging station information as the target charging station. Then the distance from the current location to the target charging station is calculated to obtain the target distance. The predicted time for the vehicle to travel from the current location to the target charging station is calculated based on the target distance and the current speed of the vehicle. Then, the first preset formula is used to calculate the predicted power consumption of the vehicle from the current location to the target charging station based on the target distance, the vehicle's energy consumption, and the total battery power.

[0067] Among them, the first preset formula is: α todest =(S÷100)*β÷E,α todest To predict the power consumption, S is the target distance, E is the total battery power, and β is the vehicle energy consumption.

[0068] S3: Obtain the current time and the historical charging behavior data in the user charging database, and determine whether the current time meets the time point for starting battery heating based on the target heating duration, the current time point, the historical charging behavior data, the predicted duration and the predicted power consumption, and generate battery heating reminder information, and send the battery heating reminder information to the user terminal corresponding to the vehicle.

[0069] The historical charging behavior data includes the historical charging remaining power and the historical charging departure time. The historical charging remaining power is the remaining power of the vehicle during the previous charging, that is, the remaining power during charging stored in the above step S1B. The historical charging departure time is the departure time stored in the above step S1B and step S1E.

[0070] Specifically, if the current time point meets the time point for turning on battery heating, a battery heating reminder message is generated and sent to the user terminal corresponding to the vehicle, thereby timely reminding the user to turn on the battery heating function, improving the charging efficiency of the power battery, reducing the charging waiting time, reducing the vehicle's stay time at the charging pile, and improving the utilization efficiency of the charging station.

[0071] See also Figure 6 , Figure 6 A specific implementation of step S3 is shown, which is described in detail as follows:

[0072] S31: Obtain the current time point and the historical charging remaining power and the historical charging departure time in the user charging database.

[0073] S32: using a normal distribution curve to fit the historical charging remaining power and the historical charging departure time respectively, to obtain a remaining power fitting result and a departure time fitting result.

[0074] S33: respectively obtaining the upper and lower limits of the preset probability interval from the remaining power fitting result and the departure time fitting result, and obtaining the minimum remaining power, the maximum remaining power, the minimum departure time, and the maximum departure time.

[0075] S34: Based on the minimum remaining power, the maximum remaining power, the minimum departure time, the maximum departure time, the target heating duration, the current time point, the predicted duration and the predicted power consumption, determine whether the current time point meets the time point for starting battery heating.

[0076] S35: Generate the battery heating reminder information, and send the battery heating reminder information to the user terminal corresponding to the vehicle.

[0077] Specifically, the current time point and the historical charging remaining power and the historical charging departure time in the user charging database are obtained. The normal distribution curve is used to fit the historical charging remaining power and the historical charging departure time, respectively, to obtain the remaining power fitting result and the departure time fitting result. The remaining power fitting result and the departure time fitting result have upper and lower limits, so the upper and lower limits of the preset probability interval are obtained from the remaining power fitting result and the departure time fitting result, respectively, to obtain the minimum remaining power, the maximum remaining power, the minimum departure time, and the maximum departure time. Finally, based on the minimum remaining power, the maximum remaining power, the minimum departure time, the maximum departure time, the target heating time, the current time, the predicted time, and the predicted power consumption, it is determined that the current time point meets the time point for turning on the battery heating, the battery heating reminder information is generated, and the battery heating reminder information is sent to the user terminal corresponding to the vehicle.

[0078] See also Figure 7 , Figure 7 A specific implementation of step S34 is shown, which is described in detail as follows:

[0079] S341: Determine whether the current remaining battery power in the current vehicle information is less than the sum of the minimum remaining power and the predicted power consumption, and obtain a first judgment result.

[0080] S342: Determine whether the current remaining battery power in the current vehicle information is greater than the sum of the predicted power consumption and the preset reserved arrival power, and obtain a second judgment result.

[0081] S343: Calculate the difference between the minimum departure time and the current time to obtain the time difference, and calculate the user's required heating time based on the target heating time, the predicted time and the preset reserved time.

[0082] S344: Determine whether the time difference satisfies the requirement of being less than the time required by the user, and obtain a third determination result.

[0083] S345: Determine whether the maximum departure time satisfies and is greater than the current time, and obtain a fourth determination result.

[0084] S346: If all the first judgment result, the second judgment result, the third judgment result and the fourth judgment result are satisfied, it is determined that the current time point satisfies the time point for starting battery heating.

[0085] Specifically, it is determined whether the current battery remaining power in the current vehicle information satisfies the condition that it is less than the sum of the minimum remaining power and the predicted power consumption, and a first judgment result is obtained. It is determined whether the current battery remaining power in the current vehicle information satisfies the condition that it is greater than the sum of the predicted power consumption and the preset reserved arrival power, and a second judgment result is obtained. The difference between the minimum departure time and the current time is calculated to obtain the time difference, and the target heating time is subtracted from the predicted time, and then the target heating time is added to the preset reserved time to calculate the time required by the user. It is determined whether the maximum departure time satisfies the condition that it is greater than the current time, and a fourth judgment result is obtained. If all the judgment results of the first judgment result, the second judgment result, the third judgment result, and the fourth judgment result are satisfied, it is determined that the current time point satisfies the time point for turning on the battery heating, and a battery heating reminder message is generated, and the battery heating reminder message is sent to the user terminal corresponding to the vehicle. If any of the first judgment result, the second judgment result, the third judgment result, and the fourth judgment result are not satisfied, it is determined that the current time point does not meet the time point for turning on the battery heating, and the condition for reminding the user to turn on the heating is not satisfied at this time.

[0086] In an embodiment of the present application, when the current temperature of the vehicle power battery is lower than a preset temperature, the time for the vehicle power battery to be heated from the current temperature to the target charging temperature is calculated to obtain the target heating time; the current vehicle information and the current position of the vehicle on which the vehicle power battery is installed are obtained, and the target charging station is determined from the historical charging station information in a pre-built user charging database according to the current position, and the predicted time and predicted power consumption of the vehicle from the current position to the target charging station are calculated according to the current vehicle information; the current time point and the historical charging behavior data in the user charging database are obtained, and based on the target heating time, the current time point, the historical charging behavior data, the predicted time and the predicted power consumption, it is determined that the current time point meets the time point for starting battery heating, and a battery heating reminder message is generated, and the battery heating reminder message is sent to the user terminal corresponding to the vehicle. The embodiment of the present invention can calculate the time for the power battery to be heated from the current temperature to the target charging temperature, and can determine whether the current time meets the time point for starting battery heating. If the battery heating reminder information can be sent to the user terminal corresponding to the vehicle, the user can be reminded in time to turn on the battery heating function, avoiding the need to start charging the vehicle from a low temperature state, thereby improving the charging efficiency of the vehicle under low temperature conditions, reducing the charging waiting time, reducing the vehicle's stay time at the charging pile, and improving the utilization efficiency of the charging station.

[0087] Please refer to Figure 8 , as a response to the above Figure 1 The present application provides an embodiment of a temperature control device for a vehicle power battery. Figure 1 Corresponding to the method embodiment shown, the device can be specifically applied to various vehicles.

[0088] like Figure 8 As shown, the temperature control device of the vehicle power battery of this embodiment includes: a heating time calculation unit 51, a predicted time calculation unit 52, a start time judgment unit 53 and a reminder information sending unit 54, wherein:

[0089] A heating time calculation unit 41 is used to calculate the time it takes for the vehicle power battery to heat from the current temperature to the target charging temperature when the current temperature of the vehicle power battery is lower than a preset temperature, so as to obtain a target heating time;

[0090] The predicted duration calculation unit 42 is used to obtain the current vehicle information and the current position of the vehicle on which the vehicle power battery is installed, determine the target charging station from the historical charging station information in the pre-built user charging database according to the current position, and calculate the predicted duration and predicted power consumption of the vehicle from the current position to the target charging station according to the current vehicle information;

[0091] The start-up time judgment unit 43 is used to obtain the current time point and the historical charging behavior data in the user charging database, and judge whether the current time point meets the time point for starting battery heating based on the target heating duration, the current time point, the historical charging behavior data, the predicted duration and the predicted power consumption, and generate battery heating reminder information, and send the battery heating reminder information to the user terminal corresponding to the vehicle.

[0092] Furthermore, the heating time calculation unit 41 includes:

[0093] a battery temperature rise rate acquisition unit, configured to acquire the battery temperature rise rate and the target charging temperature of the vehicle when the current temperature of the vehicle power battery is lower than the preset temperature, wherein the battery temperature rise rate is a temperature rise rate of the vehicle power battery at different ambient temperatures calculated by pre-testing;

[0094] The target heating time generation unit is used to calculate the time it takes for the vehicle power battery to heat from the current temperature to the target charging temperature based on the current temperature, the target charging temperature and the battery heating rate using a preset formula to obtain the target heating time.

[0095] Furthermore, the current vehicle information includes the current remaining battery power, the total battery power and the vehicle energy consumption; the predicted duration calculation unit 42 includes:

[0096] A vehicle information acquisition unit, used to acquire the current remaining battery power, the total battery power and the vehicle energy consumption of the vehicle installed with the vehicle power battery;

[0097] a target charging station determining unit, configured to obtain the charging station closest to the current location from the historical charging station information in the user charging database as the target charging station;

[0098] A target distance calculation unit, used to calculate the distance from the current position to the target charging station to obtain a target distance;

[0099] A first calculation unit, configured to calculate the predicted time for the vehicle to travel from the current position to the target charging station according to the target distance;

[0100] The second calculation unit is used to calculate the predicted power consumption of the vehicle from the current position to the target charging station according to the target distance, the vehicle energy consumption and the total battery power.

[0101] Furthermore, the historical charging behavior data includes historical charging remaining power and historical charging departure time; the start time judgment unit 43 includes:

[0102] A historical information acquisition unit, used to acquire the current time point and the historical charging remaining power and the historical charging departure time in the user charging database;

[0103] A data fitting unit, used to respectively fit the historical charging remaining power and the historical charging departure time using a normal distribution curve to obtain a remaining power fitting result and a departure time fitting result;

[0104] a data acquisition unit, configured to acquire upper and lower limits of a preset probability interval from the remaining power fitting result and the departure time fitting result, respectively, to obtain a minimum remaining power value, a maximum remaining power value, a minimum departure time value, and a maximum departure time value;

[0105] a judging unit, configured to judge whether the current time point satisfies the time point for starting battery heating based on the minimum remaining power value, the maximum remaining power value, the minimum departure time value, the maximum departure time value, the target heating duration, the current time point, the predicted duration, and the predicted power consumption;

[0106] The reminder unit is used to generate the battery heating reminder information and send the battery heating reminder information to the user terminal corresponding to the vehicle.

[0107] Furthermore, the judging unit includes:

[0108] A first judgment unit, used for judging whether the current remaining battery power in the current vehicle information satisfies the requirement of being less than the sum of the minimum remaining power and the predicted power consumption, and obtaining a first judgment result;

[0109] A second judgment unit is used to judge whether the current remaining battery power in the current vehicle information satisfies the requirement of being greater than the sum of the predicted power consumption and a preset reserved arrival power, and obtain a second judgment result;

[0110] A user required calculation unit, used to calculate the difference between the minimum departure time and the current time, obtain the time difference, and calculate the user required time based on the target heating time, the predicted time and the preset reserved time;

[0111] A third judgment unit is used to judge whether the time difference is less than the time required by the user, and obtain a third judgment result;

[0112] A fourth judgment unit, used to judge whether the maximum departure time satisfies and is greater than the current time point, and obtain a fourth judgment result;

[0113] a first determination unit, configured to determine that the current time point satisfies a time point for starting battery heating if all of the first determination result, the second determination result, the third determination result and the fourth determination result are satisfied;

[0114] The second determination unit is configured to determine that the current time does not meet the time point for starting battery heating if any one of the first determination result, the second determination result, the third determination result and the fourth determination result is not met.

[0115] Furthermore, the heating time calculation unit 51 further includes:

[0116] A navigation data acquisition unit, for acquiring the current departure time, the current departure position, the charging station information and the remaining power during charging if it is detected that the vehicle is navigating to a charging station;

[0117] A first data storage unit, used to store the current departure time point, the current departure location, the charging station information and the remaining power during charging in the user charging database;

[0118] a non-navigation data recording unit, for recording a departure position and a departure time of the vehicle each time the vehicle is engaged in a forward gear if it is detected that the vehicle is not navigating to a charging station;

[0119] a non-navigation data acquisition unit, for acquiring, if it is detected that the vehicle starts charging, the charging station information and the remaining power during charging, obtaining the target charging station information and the target remaining power, and obtaining the departure position and departure time that meet the preset conditions, and obtaining the target departure time and the target departure position;

[0120] The second data storage unit is used to store the target charging station information, the target remaining power, the target departure time and the target departure position in the user charging database.

[0121] Furthermore, the non-navigation data acquisition unit includes:

[0122] a target remaining power acquisition unit, configured to acquire the charging station information and the remaining power during charging, and obtain the target charging station information and the target remaining power, if it is detected that the vehicle starts charging;

[0123] An initial departure position acquisition unit is used to acquire the departure position and departure time when the forward gear is engaged for a preset number of times, and obtain the initial departure position and initial departure time;

[0124] The target starting position acquisition unit is used to determine whether the initial starting position when the forward gear is engaged satisfies a condition that the distance is greater than a preset distance and the difference between the initial starting time and the time when the vehicle starts charging is the smallest. If so, the initial starting position and the initial starting time are used as the target starting time and the target starting position, respectively.

[0125] In order to solve the above technical problems, the present application embodiment also provides a vehicle. Fig. 9 , Fig. 9 This is a basic structural block diagram of the vehicle in this embodiment.

[0126] The vehicle 6 includes a memory 61, a processor 62, and a network interface 63 which are interconnected and communicated with each other via a system bus. It should be noted that: Fig. 9 Only a vehicle 6 having three components, memory 61, processor 62, and network interface 63, is shown, but it should be understood that it is not required to implement all the components shown, and more or fewer components may be implemented instead. Among them, those skilled in the art can understand that the vehicle here is a device that can automatically perform numerical calculations and / or information processing according to pre-set or stored instructions, and its hardware includes but is not limited to microprocessors, application specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), digital signal processors (DSP), embedded devices, etc.

[0127] The memory 61 includes at least one type of readable storage medium, and the readable storage medium includes flash memory, hard disk, multimedia card, card-type memory (for example, SD or DX memory, etc.), random access memory (RAM), static random access memory (SRAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), programmable read-only memory (PROM), magnetic memory, disk, optical disk, etc. In some embodiments, the memory 61 can be an internal storage unit of the vehicle 6, such as a hard disk or memory of the vehicle 6. In other embodiments, the memory 61 can also be an external storage device of the vehicle 6, such as a plug-in hard disk equipped on the vehicle 6, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc. Of course, the memory 61 can also include both the internal storage unit of the vehicle 6 and its external storage device. In this embodiment, the memory 61 is generally used to store the operating system and various application software installed on the vehicle 6, such as the program code of the temperature control method of the vehicle power battery, etc. In addition, the memory 61 can also be used to temporarily store various types of data that have been output or are to be output.

[0128] The processor 62 may be a central processing unit (CPU), a controller, a microcontroller, a microprocessor, or other data processing chips in some embodiments. The processor 62 is generally used to control the overall operation of the vehicle 6. In this embodiment, the processor 62 is used to run the program code stored in the memory 61 or process data, such as running the program code of the temperature control method of the vehicle power battery described above, so as to implement various embodiments of the temperature control method of the vehicle power battery.

[0129] The network interface 63 may include a wireless network interface or a wired network interface, and is generally used to establish a communication connection between the vehicle 6 and other electronic devices.

[0130] The present application also provides another embodiment, namely, providing a computer-readable storage medium, which stores a computer program. The computer program can be executed by at least one processor to enable the at least one processor to perform the steps of a vehicle power battery temperature control method as described above.

[0131] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, a disk, or an optical disk), and includes a number of instructions for a terminal device (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods of each embodiment of the present application.

[0132] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.

Claims

1. A temperature control method for a vehicle power battery, characterized in that: include: When the current temperature of the vehicle power battery is lower than a preset temperature, calculating the time it takes for the vehicle power battery to heat from the current temperature to a target charging temperature to obtain a target heating time; Acquire current vehicle information and current location of the vehicle on which the vehicle power battery is installed, determine a target charging station from historical charging station information in a pre-built user charging database according to the current location, and calculate a predicted duration and predicted power consumption of the vehicle from the current location to the target charging station according to the current vehicle information; The current time point and the historical charging behavior data in the user charging database are obtained, and based on the target heating duration, the current time point, the historical charging behavior data, the predicted duration and the predicted power consumption, it is determined that the current time point meets the time point for starting battery heating, and battery heating reminder information is generated, and the battery heating reminder information is sent to the user terminal corresponding to the vehicle.

2. The temperature control method of a vehicle power battery according to claim 1, characterized in that: When the current temperature of the vehicle power battery is lower than a preset temperature, calculating the time for the vehicle power battery to be heated from the current temperature to a target charging temperature to obtain a target heating time, comprises: When the current temperature of the vehicle power battery is lower than the preset temperature, obtaining the battery temperature rise rate of the vehicle and the target charging temperature, wherein the battery temperature rise rate is a temperature rise rate of the vehicle power battery calculated in advance under different ambient temperatures; The target heating time is obtained by calculating the time it takes for the vehicle power battery to be heated from the current temperature to the target charging temperature based on the current temperature, the target charging temperature and the battery heating rate using a preset formula.

3. The temperature control method of a vehicle power battery according to claim 1, characterized in that: The current vehicle information includes the current remaining battery power, the total battery power and the vehicle energy consumption; the current vehicle information and the current position of the vehicle on which the vehicle power battery is installed are obtained, a target charging station is determined from the historical charging station information in a pre-built user charging database according to the current position, and a predicted duration and predicted power consumption of the vehicle from the current position to the target charging station are calculated according to the current vehicle information, including: Obtaining the current remaining battery power, the total battery power and the vehicle energy consumption of the vehicle in which the vehicle power battery is installed; Acquire the charging station closest to the current location from the historical charging station information in the user charging database as the target charging station; Calculating the distance from the current location to the target charging station to obtain a target distance; Calculating the predicted time for the vehicle to travel from the current position to the target charging station according to the target distance; The predicted power consumption of the vehicle from the current position to the target charging station is calculated based on the target distance, the vehicle energy consumption and the total battery power.

4. The temperature control method of a vehicle power battery according to claim 1, characterized in that: The historical charging behavior data includes historical charging remaining power and historical charging departure time; the obtaining of the current time point and the historical charging behavior data in the user charging database, and judging that the current time point meets the time point for starting battery heating based on the target heating duration, the current time point, the historical charging behavior data, the predicted duration and the predicted power consumption, and generating battery heating reminder information, and sending the battery heating reminder information to the user terminal corresponding to the vehicle, including: Obtaining the current time point and the historical charging remaining power and the historical charging departure time in the user charging database; Using a normal distribution curve to fit the historical charging remaining power and the historical charging departure time, respectively, to obtain a remaining power fitting result and a departure time fitting result; Obtaining upper and lower limits of a preset probability interval from the remaining power fitting result and the departure time fitting result respectively, and obtaining a minimum remaining power value, a maximum remaining power value, a minimum departure time value, and a maximum departure time value; Determining whether the current time point satisfies the time point for starting battery heating based on the minimum remaining power value, the maximum remaining power value, the minimum departure time value, the maximum departure time value, the target heating duration, the current time point, the predicted duration, and the predicted power consumption; The battery heating reminder information is generated, and the battery heating reminder information is sent to the user terminal corresponding to the vehicle.

5. The temperature control method of a vehicle power battery according to claim 4, characterized in that: The determining, based on the minimum remaining power value, the maximum remaining power value, the minimum departure time value, the maximum departure time value, the target heating duration, the current time point, the predicted duration, and the predicted power consumption, that the current time point satisfies the time point for starting battery heating includes: Determine whether the current remaining battery power in the current vehicle information satisfies the requirement of being less than the sum of the minimum remaining power and the predicted power consumption, and obtain a first determination result; Determine whether the current remaining battery power in the current vehicle information satisfies the requirement of being greater than the sum of the predicted power consumption and the preset reserved arrival power, and obtain a second determination result; Calculate the difference between the minimum departure time and the current time to obtain the time difference, and calculate the user's required heating time based on the target heating time, the predicted time and the preset reserved time; Determine whether the time difference is less than the time required by the user, and obtain a third determination result; Determine whether the maximum departure time satisfies and is greater than the current time point, and obtain a fourth determination result; If all of the first judgment result, the second judgment result, the third judgment result and the fourth judgment result are satisfied, it is determined that the current time point satisfies the time point for starting battery heating.

6. The temperature control method of a vehicle power battery according to any one of claims 1 to 5, characterized in that: When the current temperature of the vehicle power battery is lower than a preset temperature, the time for heating the vehicle power battery from the current temperature to the target charging temperature is calculated, and before obtaining the target heating time, the method further includes: If it is detected that the vehicle is navigating to a charging station, the current departure time, the current departure location, the charging station information and the remaining power during charging are obtained; storing the current departure time, the current departure location, the charging station information, and the remaining power during charging in the user charging database; If it is detected that the vehicle has not navigated to the charging station, recording the departure position and departure time of the vehicle each time the vehicle is engaged in a forward gear; If it is detected that the vehicle starts to charge, the charging station information and the remaining power during charging are obtained, the target charging station information and the target remaining power are obtained, and the departure location and departure time that meet the preset conditions are obtained, and the target departure time and target departure location are obtained; The target charging station information, the target remaining power, the target departure time and the target departure location are stored in the user charging database.

7. The temperature control method of a vehicle power battery according to claim 6, characterized in that: If it is detected that the vehicle starts to charge, the charging station information and the remaining power during charging are obtained, the target charging station information and the target remaining power are obtained, and the departure location and departure time that meet the preset conditions are obtained, and the target departure time and target departure location are obtained, including: If it is detected that the vehicle starts to charge, the charging station information and the remaining power during charging are obtained, and the target charging station information and the target remaining power are obtained; Obtain the departure position and departure time when the forward gear is engaged for a preset number of times, and obtain the initial departure position and initial departure time; It is determined whether the initial starting position when the forward gear is engaged satisfies a condition that the distance is greater than a preset distance and the difference between the initial starting time and the time when the vehicle starts charging is the smallest. If so, the initial starting position and the initial starting time are used as the target starting time and the target starting position, respectively.

8. A temperature control device for a vehicle power battery, characterized in that: include: a heating time calculation unit, configured to calculate the time it takes for the vehicle power battery to be heated from the current temperature to the target charging temperature when the current temperature of the vehicle power battery is lower than a preset temperature, so as to obtain a target heating time; a predicted duration calculation unit, configured to obtain current vehicle information and a current position of a vehicle on which the vehicle power battery is installed, determine a target charging station from historical charging station information in a pre-built user charging database according to the current position, and calculate a predicted duration and predicted power consumption of the vehicle from the current position to the target charging station according to the current vehicle information; A start-up time judgment unit is used to obtain the current time point and the historical charging behavior data in the user charging database, and judge that the current time point meets the time point for starting battery heating based on the target heating duration, the current time point, the historical charging behavior data, the predicted duration and the predicted power consumption, and generate battery heating reminder information, and send the battery heating reminder information to the user terminal corresponding to the vehicle.

9. A vehicle, characterized in that: It comprises a memory and a processor, wherein the memory stores a computer program, and the processor implements the temperature control method of the vehicle power battery as described in any one of claims 1 to 7 when executing the computer program.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the temperature control method of a vehicle power battery according to any one of claims 1 to 7 is implemented.

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