Vehicle power battery heating control method, device and equipment and storage medium

Abstract

The invention relates to the technical field of vehicle heat management, and discloses a vehicle power battery heating control method, device and equipment and a storage medium, and the method comprises the steps: generating the current road spectrum data of a vehicle according to the current travel route of the vehicle, and determining the current required power of the vehicle based on the current road spectrum data; based on the current required power and a current temperature value of a power battery of the vehicle, whether the power battery meets the current required power or not is judged; and when the power battery does not meet the current required power, determining a current heating strategy of the power battery according to the current required power and the current road spectrum data, and controlling the power battery to heat according to the current heating strategy. According to the technical scheme, intelligent heating control can be conducted on the power battery according to the actual travel route of the vehicle, electric energy waste caused in the heating process of the power battery is reduced, and the driving experience of the whole vehicle is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle thermal management technology, and specifically to a vehicle power battery heating control method, device, equipment and storage medium. Background Art

[0002] At present, pure electric vehicles are favored by more and more users due to their good power, drivability, NVH performance and low cost of use, but they still have problems of high energy consumption and short driving range in low temperature environments. The heating control method of power batteries in low temperature environments has a great impact on the above problems. The current existing technology usually only judges whether the power battery needs to be heated based on the battery cell temperature and / or the ambient temperature, without considering the vehicle's usage scenario, which results in high power consumption or low discharge power of power battery heating in low temperature environments, affecting the driving experience of the whole vehicle.

[0003] Therefore, it is urgent to provide a technical solution to solve the above problems. Summary of the invention

[0004] In view of the above problems, the present application provides a vehicle power battery heating control method, device, equipment and storage medium, which are used to reduce the problem of power waste caused by power battery heating in the prior art.

[0005] According to one aspect of an embodiment of the present application, a vehicle power battery heating control method is provided, the method comprising:

[0006] Generate current road spectrum data of the vehicle according to the current travel route of the vehicle, and determine the current required power of the vehicle based on the current road spectrum data;

[0007] Based on the current required power and a current temperature value of the power battery of the vehicle, determining whether the power battery meets the current required power;

[0008] When the power battery does not meet the current required power, a current heating strategy of the power battery is determined according to the current required power and the current road spectrum data, and the power battery is controlled to be heated according to the current heating strategy.

[0009] In an optional manner, the step of generating current road spectrum data of the vehicle according to the current travel route of the vehicle further includes:

[0010] Obtain route parameters and environmental parameters corresponding to the current travel route, and generate current road spectrum data of the vehicle based on the route parameters and the environmental parameters.

[0011] In an optional manner, the step of determining the current required power of the vehicle based on the current road spectrum data further includes:

[0012] According to the current road spectrum data, a dynamic simulation is performed on the vehicle to obtain vehicle simulation data, and according to the vehicle simulation data, the current required power of the vehicle is calculated.

[0013] In an optional manner, the vehicle simulation data includes: the drive motor torque, drive motor speed, drive motor efficiency and vehicle high-voltage accessory power of the vehicle; and the step of calculating the current required power of the vehicle according to the vehicle simulation data further includes:

[0014] Substitute the drive motor torque, the drive motor speed, the drive motor efficiency and the vehicle high-voltage accessory power into the driving demand power calculation formula to calculate the current demand power of the vehicle; wherein the driving demand power calculation formula is: P = T*N / 9550 / μ+P 负载 ; P is the current required power, T is the drive motor torque, N is the drive motor speed, μ is the drive motor efficiency, P 负载 is the high voltage accessory power of the whole vehicle.

[0015] In an optional manner, the step of determining whether the power battery meets the current power requirement based on the current power requirement and the current temperature value of the power battery of the vehicle further includes:

[0016] Obtaining a current temperature value of the power battery, and determining a charge and discharge power corresponding to the current temperature value;

[0017] When the charge and discharge power is greater than or equal to the current required power, it is determined that the power battery meets the current required power; when the charge and discharge power is less than the current required power, it is determined that the power battery does not meet the current required power.

[0018] In an optional manner, the current heating strategy includes: a heating start time point, the heating power and the heating duration; and the step of determining the current heating strategy of the power battery according to the current required power and the current road spectrum data further includes:

[0019] A target temperature threshold corresponding to the current required power is obtained, and based on the target temperature threshold and the current road spectrum data, a thermal management simulation is performed on the power battery to determine the heating start time point, the heating power and the heating duration of the power battery.

[0020] In an optional manner, based on the target temperature threshold and the current road spectrum data, a thermal management simulation is performed on the power battery to determine the heating start time point, the heating power and the heating duration of the power battery, including:

[0021] Based on the target temperature threshold and the driving duration in the current road spectrum data, a thermal management simulation is performed on the power battery to obtain an auxiliary heating power and an auxiliary heating efficiency;

[0022] The auxiliary heating requirement duration is calculated according to the target temperature threshold, the auxiliary heating power and the auxiliary heating efficiency, and the heating start time point, the heating power and the heating duration are determined according to the auxiliary heating requirement duration.

[0023] According to another aspect of an embodiment of the present application, a vehicle power battery heating control device is provided, comprising:

[0024] A processing module, used to generate current road spectrum data of the vehicle according to the current travel route of the vehicle, and determine the current required power of the vehicle based on the current road spectrum data;

[0025] a determination module, configured to determine whether the power battery meets the current power requirement based on the current power requirement and a current temperature value of the power battery of the vehicle;

[0026] The control module is used to determine the current heating strategy of the power battery according to the current required power and the current road spectrum data when the power battery does not meet the current required power, and control the power battery to heat according to the current heating strategy.

[0027] According to another aspect of an embodiment of the present application, a vehicle power battery heating control device is provided, comprising: a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface communicate with each other through the communication bus;

[0028] The memory is used to store at least one executable instruction, and the executable instruction enables the processor to perform operations such as the vehicle power battery heating control method of the present invention.

[0029] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is provided, wherein at least one executable instruction is stored in the storage medium, and the executable instruction enables a vehicle power battery heating control device / equipment to perform operations such as the vehicle power battery heating control method of the present invention.

[0030] The embodiment of the present application generates current road spectrum data of the vehicle according to the current travel route of the vehicle, and determines the current power demand of the vehicle based on the current road spectrum data; determines whether the power battery meets the current power demand based on the current power demand and the current temperature value of the power battery of the vehicle; when the power battery does not meet the current power demand, determines the current heating strategy of the power battery according to the current power demand and the current road spectrum data, and controls the power battery to heat according to the current heating strategy. The power battery can be intelligently heated according to the actual travel route of the vehicle, thereby reducing the waste of electric energy caused by the heating process of the power battery and improving the driving experience of the whole vehicle.

[0031] The above description is only an overview of the technical solution of the embodiment of the present application. In order to more clearly understand the technical means of the embodiment of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiment of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings are only used to illustrate the embodiments and are not to be considered as limiting the present application. In addition, the same reference symbols are used to represent the same components throughout the accompanying drawings. In the accompanying drawings:

[0033] Figure 1 A schematic diagram showing a flow chart of an embodiment of a vehicle power battery heating control method provided by the present application;

[0034] Figure 2 A schematic diagram of the process of step S120 is shown;

[0035] Figure 3 A schematic structural diagram of an embodiment of a vehicle power battery heating control device provided by the present application is shown;

[0036] Figure 4 A schematic structural diagram of an embodiment of a vehicle power battery heating control device provided in the present application is shown. DETAILED DESCRIPTION

[0037] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0038] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0039] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined, so the actual execution order may change according to actual conditions.

[0040] The term "multiple" as used in this application refers to two or more than two. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects are in an "or" relationship.

[0041] At present, pure electric vehicles are favored by more and more users due to their good power, drivability, NVH performance and low cost of use. However, they still have problems of high energy consumption and short driving range in low temperature environments. The heating control method of power batteries in low temperature environments has a great impact on the above problems. The current existing technology usually only judges whether the power battery needs to be heated based on the battery cell temperature and / or ambient temperature, without considering the vehicle's usage scenario, resulting in high power consumption or low discharge power of power battery heating in low temperature environments, which affects the driving experience of the whole vehicle. Based on this:

[0042] Figure 1 The flowchart of the embodiment of the vehicle power battery heating control method provided by the present application is shown, and the method is executed by the vehicle power battery heating control device. Figure 1 As shown, the method comprises the following steps:

[0043] Step S110: Generate current road spectrum data of the vehicle according to the current travel route of the vehicle, and determine the current required power of the vehicle based on the current road spectrum data.

[0044] The vehicle is a pure electric vehicle by default, and can also be selected according to actual conditions. The current travel route can be generated by the user entering the starting point and the end point in the vehicle map on the vehicle's central control display. The current travel route combines the current environmental parameters (such as weather) and route parameters (such as road conditions, road surface information, congestion, etc.), and uses specific algorithms in the vehicle map (such as map matching algorithms, path planning algorithms or road information extraction algorithms, all of which are conventional algorithms) to generate the current road spectrum information.

[0045] Step S120: Based on the current required power and the current temperature value of the power battery of the vehicle, determine whether the power battery meets the current required power.

[0046] The current temperature value is the temperature value of the power battery at the current moment.

[0047] In step S120, Figure 2 As shown, specifically:

[0048] Step S121: obtaining the current temperature value of the power battery, and determining the charge and discharge power corresponding to the current temperature value.

[0049] Among them, the charging and discharging power corresponding to the current temperature value is obtained from the power battery power map.

[0050] Step S122: when the charge and discharge power is greater than or equal to the current required power, it is determined that the power battery meets the current required power; when the charge and discharge power is less than the current required power, it is determined that the power battery does not meet the current required power.

[0051] Among them, when the power battery meets the current required power, there is no need to turn on the power battery heating function during the journey. When the power battery does not meet the current required power, the power battery heating function needs to be turned on during the journey.

[0052] Step S130: When the power battery does not meet the current required power, a current heating strategy of the power battery is determined according to the current required power and the current road spectrum data, and the power battery is controlled to be heated according to the current heating strategy.

[0053] Among them, different heating strategies correspond to different heating start time points, heating powers and heating durations. The vehicle power battery heating control device can be a cloud controller, which controls the vehicle's domain controller to heat the power battery.

[0054] It should be noted that before executing the step of determining the current required power of the vehicle based on the current road spectrum data in S110, it is also possible to retrieve from the stored historical road spectrum data whether there is road spectrum data with the same working conditions as the current road spectrum data; if so, directly call the heating control strategy corresponding to the road spectrum data for heating. If not, execute the step of determining the current required power of the vehicle based on the current road spectrum data.

[0055] The technical solution of this embodiment can intelligently control the heating of the power battery according to the actual travel route of the vehicle, reduce the energy waste caused by the power battery heating process, and improve the driving experience of the whole vehicle.

[0056] On the basis of the above embodiment, the step of generating the current road spectrum data of the vehicle according to the current travel route of the vehicle in step S110 further includes:

[0057] Obtain route parameters and environmental parameters corresponding to the current travel route, and generate current road spectrum data of the vehicle based on the route parameters and the environmental parameters.

[0058] Among them, route parameters include but are not limited to: congestion information, average vehicle speed, slope information, etc. Environmental parameters include but are not limited to: weather information and temperature information, etc. The current route data includes the starting position, end position, departure time, arrival time, weather information, vehicle speed information, slope information, congestion information, etc.

[0059] Based on the above embodiment, the step of determining the current required power of the vehicle based on the current road spectrum data in step S110 further includes:

[0060] According to the current road spectrum data, a dynamic simulation is performed on the vehicle to obtain vehicle simulation data, and according to the vehicle simulation data, the current required power of the vehicle is calculated.

[0061] The vehicle simulation data includes: the vehicle's drive motor torque, drive motor speed, drive motor efficiency and vehicle high-voltage accessory power. The step of calculating the current required power of the vehicle based on the vehicle simulation data further includes:

[0062] The drive motor torque, the drive motor speed, the drive motor efficiency and the whole vehicle high-voltage accessory power are substituted into the driving demand power calculation formula to calculate the current demand power of the vehicle.

[0063] The driving power demand calculation formula is: P = T*N / 9550 / μ+P 负载 ; P is the current required power, T is the drive motor torque, N is the drive motor speed, μ is the drive motor efficiency, P 负载 It is the high voltage accessory power of the whole vehicle.

[0064] Based on the above embodiment, the current heating strategy includes: the heating start time point, the heating power and the heating duration. The step of determining the current heating strategy of the power battery according to the current required power and the current road spectrum data in step S130 further includes:

[0065] A target temperature threshold corresponding to the current required power is obtained, and based on the target temperature threshold and the current road spectrum data, a thermal management simulation is performed on the power battery to determine the heating start time point, the heating power and the heating duration of the power battery.

[0066] The target temperature threshold is the temperature threshold at which the power battery heating stops. From the power battery map, the temperature value corresponding to the current required power is obtained, and the temperature value is determined as the target temperature threshold.

[0067] On the basis of the above embodiment, the step of performing thermal management simulation on the power battery to determine the heating start time point, the heating power and the heating duration of the power battery includes:

[0068] Based on the target temperature threshold and the driving duration in the current road spectrum data, a thermal management simulation is performed on the power battery to obtain an auxiliary heating power and an auxiliary heating efficiency.

[0069] Among them, the current road spectrum data includes driving time, possible driving speed, acceleration, etc. The current road spectrum data in this embodiment only includes driving time by default. The thermal management simulation process is the existing technology. The simulation input is the power battery temperature, ambient temperature and driving time. The auxiliary heating power and auxiliary heating efficiency in each time step are iteratively calculated until the driving time is reached or the power battery reaches the target temperature threshold. The simulation is terminated, and the average value of the auxiliary heating power in each time step is used as the final auxiliary heating power, and the average value of the auxiliary heating efficiency in each time step is used as the final auxiliary heating efficiency.

[0070] The auxiliary heating requirement duration is calculated according to the target temperature threshold, the auxiliary heating power and the auxiliary heating efficiency, and the heating start time point, the heating power and the heating duration are determined according to the auxiliary heating requirement duration.

[0071] The target temperature threshold, the auxiliary heating power and the auxiliary heating efficiency are substituted into a preset formula to calculate the auxiliary heating requirement time. The preset formula is: t = [C*m(T1-T0)-∫(I 2 *R)dt] / P 辅 / μ1; t is the auxiliary heating requirement time, C is the specific heat capacity of the power battery, m is the mass of the power battery, T1 is the target temperature threshold, T0 is the current temperature value, I is the discharge current of the power battery, R is the internal resistance of the power battery, P 辅 is the auxiliary heating power, μ1 is the auxiliary heating efficiency.

[0072] The above further technical solution generates a road map from the starting point to the end point by collecting factors such as the environment, road conditions, and estimated speed of the trip through the vehicle and on-board map. Based on the actual comparison of the power battery discharge capacity and the actual power required by the vehicle based on the vehicle dynamics simulation, it is determined whether the power battery needs to be heated during driving to avoid turning on heating under fixed conditions. Under the condition that the power battery needs to be heated, the vehicle thermal management simulation calculation can accurately determine whether the power battery is turned on for heating and the heating time during this trip to avoid exiting heating under fixed conditions. Compared with the existing technology, it is more intelligent and low-carbon, and improves the driving experience of the whole vehicle.

[0073] Figure 3 The schematic diagram of the structure of the embodiment of the vehicle power battery heating control device provided by the present application is shown. Figure 3 As shown, the device 300 includes: a module 310 , a determination module 320 and a control module 330 .

[0074] The processing module 310 is used to generate current road spectrum data of the vehicle according to the current travel route of the vehicle, and determine the current required power of the vehicle based on the current road spectrum data;

[0075] A determination module 320, configured to determine whether the power battery meets the current power requirement based on the current power requirement and a current temperature value of the power battery of the vehicle;

[0076] The control module 330 is used to determine the current heating strategy of the power battery according to the current required power and the current road spectrum data when the power battery does not meet the current required power, and control the power battery to heat according to the current heating strategy.

[0077] In an optional manner, the processing module 310 is specifically configured to:

[0078] Obtain route parameters and environmental parameters corresponding to the current travel route, and generate current road spectrum data of the vehicle based on the route parameters and the environmental parameters.

[0079] In an optional manner, the processing module 310 is further configured to:

[0080] According to the current road spectrum data, a dynamic simulation is performed on the vehicle to obtain vehicle simulation data, and according to the vehicle simulation data, the current required power of the vehicle is calculated.

[0081] In an optional manner, the vehicle simulation data includes: the drive motor torque, drive motor speed, drive motor efficiency and vehicle high-voltage accessory power of the vehicle; the processing module 310 is further specifically used for:

[0082] Substitute the drive motor torque, the drive motor speed, the drive motor efficiency and the vehicle high-voltage accessory power into the driving demand power calculation formula to calculate the current demand power of the vehicle; wherein the driving demand power calculation formula is: P = T*N / 9550 / μ+P 负载 ; P is the current required power, T is the drive motor torque, N is the drive motor speed, μ is the drive motor efficiency, P 负载 is the high voltage accessory power of the whole vehicle.

[0083] In an optional manner, the determination module 320 is specifically configured to:

[0084] Obtaining a current temperature value of the power battery, and determining a charge and discharge power corresponding to the current temperature value;

[0085] When the charge and discharge power is greater than or equal to the current required power, it is determined that the power battery meets the current required power; when the charge and discharge power is less than the current required power, it is determined that the power battery does not meet the current required power.

[0086] In an optional manner, the current heating strategy includes: a heating start time point, the heating power and the heating duration; the control module 330 is specifically used to:

[0087] A target temperature threshold corresponding to the current required power is obtained, and based on the target temperature threshold and the current road spectrum data, a thermal management simulation is performed on the power battery to determine the heating start time point, the heating power and the heating duration of the power battery.

[0088] In an optional manner, the control module 330 is further configured to:

[0089] Based on the target temperature threshold and the driving duration in the current road spectrum data, a thermal management simulation is performed on the power battery to obtain an auxiliary heating power and an auxiliary heating efficiency;

[0090] The auxiliary heating requirement duration is calculated according to the target temperature threshold, the auxiliary heating power and the auxiliary heating efficiency, and the heating start time point, the heating power and the heating duration are determined according to the auxiliary heating requirement duration.

[0091] The technical solution of this embodiment can intelligently control the heating of the power battery according to the actual travel route of the vehicle, reduce the energy waste caused by the power battery heating process, and improve the driving experience of the whole vehicle.

[0092] It should be noted that the vehicle power battery heating control device provided in the above embodiment and the vehicle power battery heating control method provided in the above embodiment belong to the same concept, and the specific manner in which each module and unit performs the operation has been described in detail in the method embodiment and will not be repeated here.

[0093] Figure 4 A schematic diagram of the structure of an embodiment of a vehicle power battery heating control device provided in the present application is shown, which shows a schematic diagram of the structure of a computer system suitable for implementing the vehicle power battery heating control device of the embodiment of the present application. The specific embodiment of the present application does not limit the specific implementation of the vehicle power battery heating control device.

[0094] See also Figure 4 As shown, the vehicle power battery heating control device includes: a controller; a memory for storing one or more programs, and when the one or more programs are executed by the controller, the above-mentioned vehicle power battery heating control method is executed.

[0095] Please continue reading Figure 4 As shown, the computer system 500 of the vehicle power battery heating control device includes a central processing unit (CPU) 501, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 502 or the program loaded from the storage part 508 to the random access memory (RAM) 503, such as executing the method in the above embodiment. In RAM 503, various programs and data required for system operation are also stored. CPU 501, ROM 502 and RAM 503 are connected to each other through bus 504. Input / output (I / O) interface 505 is also connected to bus 504.

[0096] The following components are connected to the I / O interface 505: an input section 506 including a keyboard, a mouse, etc.; an output section 507 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 508 including a hard disk, etc.; and a communication section 509 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 509 performs communication processing via a network such as the Internet. A drive 510 is also connected to the I / O interface 505 as needed. A removable medium 511, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 510 as needed so that a computer program read therefrom is installed into the storage section 508 as needed.

[0097] In particular, according to an embodiment of the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a computer program for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication section 509, and / or installed from a removable medium 511. When the computer program is executed by a central processing unit (CPU) 501, various functions defined in the system of the present application are executed.

[0098] Another aspect of the present application further provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the vehicle power battery heating control method described above is implemented. The computer-readable storage medium may be included in the vehicle power battery heating control device described in the above embodiment, or may exist independently without being assembled into the electronic device.

[0099] Another aspect of the present application also provides a computer program product or computer program, which includes at least one executable instruction. When the executable instruction is executed on a vehicle power battery heating control device / equipment, the vehicle power battery heating control device / equipment executes the vehicle power battery heating control method as described above.

[0100] The executable instructions can be specifically used to enable the vehicle power battery heating control device / apparatus to perform the following operations:

[0101] Generate current road spectrum data of the vehicle according to the current travel route of the vehicle, and determine the current required power of the vehicle based on the current road spectrum data;

[0102] Based on the current required power and a current temperature value of the power battery of the vehicle, determining whether the power battery meets the current required power;

[0103] When the power battery does not meet the current required power, a current heating strategy of the power battery is determined according to the current required power and the current road spectrum data, and the power battery is controlled to be heated according to the current heating strategy.

[0104] In an optional manner, the step of generating current road spectrum data of the vehicle according to the current travel route of the vehicle further includes:

[0105] Obtain route parameters and environmental parameters corresponding to the current travel route, and generate current road spectrum data of the vehicle based on the route parameters and the environmental parameters.

[0106] In an optional manner, the step of determining the current required power of the vehicle based on the current road spectrum data further includes:

[0107] According to the current road spectrum data, a dynamic simulation is performed on the vehicle to obtain vehicle simulation data, and according to the vehicle simulation data, the current required power of the vehicle is calculated.

[0108] In an optional manner, the vehicle simulation data includes: the drive motor torque, drive motor speed, drive motor efficiency and vehicle high-voltage accessory power of the vehicle; and the step of calculating the current required power of the vehicle according to the vehicle simulation data further includes:

[0109] Substitute the drive motor torque, the drive motor speed, the drive motor efficiency and the vehicle high-voltage accessory power into the driving demand power calculation formula to calculate the current demand power of the vehicle; wherein the driving demand power calculation formula is: P = T*N / 9550 / μ+P 负载 ; P is the current required power, T is the drive motor torque, N is the drive motor speed, μ is the drive motor efficiency, P 负载 is the high voltage accessory power of the whole vehicle.

[0110] In an optional manner, the step of determining whether the power battery meets the current power requirement based on the current power requirement and the current temperature value of the power battery of the vehicle further includes:

[0111] Obtaining a current temperature value of the power battery, and determining a charge and discharge power corresponding to the current temperature value;

[0112] When the charge and discharge power is greater than or equal to the current required power, it is determined that the power battery meets the current required power; when the charge and discharge power is less than the current required power, it is determined that the power battery does not meet the current required power.

[0113] In an optional manner, the current heating strategy includes: a heating start time point, the heating power and the heating duration; and the step of determining the current heating strategy of the power battery according to the current required power and the current road spectrum data further includes:

[0114] A target temperature threshold corresponding to the current required power is obtained, and based on the target temperature threshold and the current road spectrum data, a thermal management simulation is performed on the power battery to determine the heating start time point, the heating power and the heating duration of the power battery.

[0115] In an optional manner, based on the target temperature threshold and the current road spectrum data, a thermal management simulation is performed on the power battery to determine the heating start time point, the heating power and the heating duration of the power battery, including:

[0116] Based on the target temperature threshold and the driving duration in the current road spectrum data, a thermal management simulation is performed on the power battery to obtain an auxiliary heating power and an auxiliary heating efficiency;

[0117] The auxiliary heating requirement duration is calculated according to the target temperature threshold, the auxiliary heating power and the auxiliary heating efficiency, and the heating start time point, the heating power and the heating duration are determined according to the auxiliary heating requirement duration.

[0118] The technical solution of this embodiment can intelligently control the heating of the power battery according to the actual travel route of the vehicle, reduce the energy waste caused by the power battery heating process, and improve the driving experience of the whole vehicle.

[0119] It should be noted that the computer-readable medium shown in the embodiment of the present application can be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media can include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable storage medium can be any tangible medium containing or storing a program, which can be used by an instruction execution system, device or device or used in combination with it. In the present application, a computer-readable signal medium can include a data signal propagated in a baseband or as a part of a carrier wave, wherein a computer-readable computer program is carried. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, which may send, propagate, or transmit programs for use by or in conjunction with an instruction execution system, apparatus, or device. The computer program contained on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0120] The flowchart and block diagram in the accompanying drawings illustrate the possible architecture, functions and operations of the system, method and computer program product according to various embodiments of the present application. Wherein, each box in the flowchart or block diagram can represent a module, a program segment, or a part of the code, and the above-mentioned module, program segment, or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order than the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flowchart, and the combination of boxes in the block diagram or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0121] The units involved in the embodiments described in this application may be implemented by software or hardware, and the units described may also be set in a processor. The names of these units do not, in some cases, constitute limitations on the units themselves.

[0122] According to one aspect of an embodiment of the present application, a computer system is also provided, including a central processing unit (CPU), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) or a program loaded from a storage portion into a random access memory (RAM), such as executing the method in the above embodiment. In RAM, various programs and data required for system operation are also stored. CPU, ROM and RAM are connected to each other via a bus. An input / output (I / O) interface is also connected to the bus.

[0123] The following components are connected to the I / O interface: an input part including a keyboard, a mouse, etc.; an output part including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker; a storage part including a hard disk, etc.; and a communication part including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication part performs communication processing via a network such as the Internet. A drive is also connected to the I / O interface as needed. Removable media, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., are installed on the drive as needed so that the computer program read therefrom is installed into the storage part as needed.

[0124] The above content is only a preferred exemplary embodiment of the present application and is not intended to limit the implementation scheme of the present application. A person skilled in the art can easily make corresponding changes or modifications based on the main concept and spirit of the present application. Therefore, the scope of protection of the present application shall be based on the scope of protection required by the claims.

Claims

1. A vehicle power battery heating control method, characterized in that: The method comprises: Generate current road spectrum data of the vehicle according to the current travel route of the vehicle, and determine the current required power of the vehicle based on the current road spectrum data; Based on the current required power and a current temperature value of the power battery of the vehicle, determining whether the power battery meets the current required power; When the power battery does not meet the current required power, a current heating strategy of the power battery is determined according to the current required power and the current road spectrum data, and the power battery is controlled to be heated according to the current heating strategy.

2. The method according to claim 1, characterized in that The step of generating the current road spectrum data of the vehicle according to the current travel route of the vehicle further comprises: Obtain route parameters and environmental parameters corresponding to the current travel route, and generate current road spectrum data of the vehicle based on the route parameters and the environmental parameters.

3. The method according to claim 1, characterized in that The step of determining the current required power of the vehicle based on the current road spectrum data further includes: According to the current road spectrum data, a dynamic simulation is performed on the vehicle to obtain vehicle simulation data, and according to the vehicle simulation data, the current required power of the vehicle is calculated.

4. The method according to claim 3, characterized in that: The vehicle simulation data includes: the driving motor torque, driving motor speed, driving motor efficiency and vehicle high-voltage accessory power of the vehicle; the step of calculating the current required power of the vehicle according to the vehicle simulation data further includes: Substitute the drive motor torque, the drive motor speed, the drive motor efficiency and the vehicle high-voltage accessory power into the driving demand power calculation formula to calculate the current demand power of the vehicle; wherein the driving demand power calculation formula is: P = T*N / 9550 / μ+P 负载 ; P is the current required power, T is the drive motor torque, N is the drive motor speed, μ is the drive motor efficiency, P 负载 is the high voltage accessory power of the whole vehicle.

5. The method according to claim 1, characterized in that The step of determining whether the power battery meets the current power requirement based on the current power requirement and the current temperature value of the power battery of the vehicle further includes: Obtaining a current temperature value of the power battery, and determining a charge and discharge power corresponding to the current temperature value; When the charge and discharge power is greater than or equal to the current required power, it is determined that the power battery meets the current required power; when the charge and discharge power is less than the current required power, it is determined that the power battery does not meet the current required power.

6. The method according to claim 1, characterized in that The current heating strategy includes: a heating start time point, the heating power and the heating duration; and the step of determining the current heating strategy of the power battery according to the current required power and the current road spectrum data further includes: A target temperature threshold corresponding to the current required power is obtained, and based on the target temperature threshold and the current road spectrum data, a thermal management simulation is performed on the power battery to determine the heating start time point, the heating power and the heating duration of the power battery.

7. The method according to claim 6, characterized in that The step of performing thermal management simulation on the power battery based on the target temperature threshold and the current road spectrum data to determine the heating start time point, the heating power and the heating duration of the power battery includes: Based on the target temperature threshold and the driving duration in the current road spectrum data, a thermal management simulation is performed on the power battery to obtain an auxiliary heating power and an auxiliary heating efficiency; The auxiliary heating requirement duration is calculated according to the target temperature threshold, the auxiliary heating power and the auxiliary heating efficiency, and the heating start time point, the heating power and the heating duration are determined according to the auxiliary heating requirement duration.

8. A vehicle power battery heating control device, characterized in that: The device comprises: A processing module, used to generate current road spectrum data of the vehicle according to the current travel route of the vehicle, and determine the current required power of the vehicle based on the current road spectrum data; a determination module, configured to determine whether the power battery meets the current power requirement based on the current power requirement and a current temperature value of the power battery of the vehicle; The control module is used to determine the current heating strategy of the power battery according to the current required power and the current road spectrum data when the power battery does not meet the current required power, and control the power battery to heat according to the current heating strategy.

9. A vehicle power battery heating control device, characterized in that: include: Controller; A memory for storing one or more programs, which, when executed by the controller, enables the controller to implement the vehicle power battery heating control method described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The storage medium stores at least one executable instruction. When the executable instruction is executed on the vehicle power battery heating control device / equipment, the vehicle power battery heating control device / equipment performs the operation of the vehicle power battery heating control method as described in any one of claims 1-7.

Images