Method, device and equipment for estimating remaining capacity of power battery and storage medium

Abstract

The invention relates to the technical field of power batteries, and discloses a power battery remaining capacity estimation method, device and equipment and a storage medium, and the method comprises the steps: carrying out the energy consumption simulation calculation of a vehicle based on a current travel route and a current driving condition of the vehicle, and determining the current estimated power consumption of the power battery of the vehicle; judging whether the vehicle can run to the final position of the current travel route or not on the basis of the size between the current residual electric quantity of the power battery and the current estimated power consumption; and if the vehicle can run to the final position of the current travel route, according to the difference value between the current residual electric quantity and the current pre-estimated power consumption, obtaining the pre-estimated residual electric quantity when the vehicle runs to the final position. According to the technical scheme, whether the power battery can meet the requirement that the vehicle can reach the destination or not can be determined according to the actual driving working condition, the accuracy of residual electric quantity estimation is improved, and therefore a driving reference is better provided for a user.

Description

Technical Field

[0001] The present application relates to the technical field of power batteries, and in particular to a method, device, equipment and storage medium for estimating the remaining power of a power battery. Background Art

[0002] At present, pure electric vehicles are favored by more and more users due to their good power, driving performance, NVH performance and low cost of use. However, due to the short driving range and limited charging pile resources, users often have mileage anxiety, especially when the vehicle power battery SOC is low. The fundamental reason for this phenomenon is that users cannot estimate the remaining mileage of the vehicle based on the remaining SOC of the power battery. Existing technologies alleviate mileage anxiety by shortening charging time, increasing battery power, etc., but do not take the root cause as the starting point.

[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 method, device, equipment and storage medium for estimating the remaining power of a power battery, which is used to solve the problem in the prior art that it is impossible to accurately estimate the remaining power of the vehicle when it arrives at the destination based on the actual driving conditions and the current power of the power battery.

[0005] According to one aspect of an embodiment of the present application, a method for estimating the remaining power of a power battery is provided, the method comprising:

[0006] Based on the current travel route and current driving conditions of the vehicle, an energy consumption simulation calculation is performed on the vehicle to determine the current estimated power consumption of the power battery of the vehicle; wherein the driving conditions are determined at least according to the navigation information, driving mode and air conditioning setting parameters of the vehicle;

[0007] Determining whether the vehicle can travel to the end point of the current travel route based on the difference between the current remaining power of the power battery and the current estimated power consumption;

[0008] If the vehicle can travel to the end point of the current travel route, the estimated remaining power when the vehicle reaches the end point is obtained based on the difference between the current remaining power and the current estimated power consumption.

[0009] In an optional manner, the energy consumption simulation includes: automobile economics simulation and vehicle thermal management simulation; the step of performing energy consumption simulation calculation on the vehicle based on the current travel route and current driving conditions of the vehicle to determine the current estimated power consumption of the power battery of the vehicle further includes:

[0010] Based on the route parameters and environmental parameters corresponding to the current travel route and in combination with the current driving condition, generating current road spectrum data of the vehicle;

[0011] According to the current road spectrum data, automobile economics simulation and vehicle thermal management simulation are performed on the vehicle to obtain vehicle simulation data, and according to the vehicle simulation data, the current estimated power consumption of the power battery is determined.

[0012] In an optional manner, before the step of performing vehicle economics simulation and vehicle thermal management simulation on the vehicle according to the current road spectrum data, the method further includes:

[0013] From the stored historical road spectrum data, determine whether there is historical road spectrum data with the same working condition as the current road spectrum data;

[0014] If not present, the step of performing vehicle economics simulation and vehicle thermal management simulation on the vehicle according to the current road spectrum data is executed.

[0015] In an optional manner, the method further includes:

[0016] Based on the remaining power calculation formula, the current remaining power of the power battery is calculated; wherein the remaining power calculation formula is: SOC1 = Q0 / Q c *SOE*α t *100%; SOC1 is the current remaining power, Q0 is the initial energy of the power battery, Q c is the nominal capacity of the power battery, SOE is the life coefficient of the power battery, α t is the temperature correction coefficient of the power battery.

[0017] In an optional manner, the step of determining whether the vehicle can travel to the end position of the current travel route based on the difference between the current remaining power of the power battery and the current estimated power consumption further includes:

[0018] When the current remaining power is greater than or equal to the current estimated power consumption, determining that the vehicle can travel to the end position of the current travel route;

[0019] When the current remaining power is less than the current estimated power consumption, it is determined that the vehicle cannot travel to the end position of the current travel route.

[0020] In an optional manner, the method further includes:

[0021] The estimated remaining power is displayed via an output in a preset area of ​​the vehicle.

[0022] According to another aspect of an embodiment of the present application, a device for estimating remaining power of a power battery is provided, comprising:

[0023] A processing module, configured to perform energy consumption simulation calculation on the vehicle based on the current travel route and current driving conditions of the vehicle, and determine the current estimated power consumption of the power battery of the vehicle; wherein the driving conditions are determined at least according to the navigation information, driving mode and air conditioning setting parameters of the vehicle;

[0024] A determination module, configured to determine whether the vehicle can travel to the end point of the current travel route based on the difference between the current remaining power of the power battery and the current estimated power consumption;

[0025] The estimation module is used to obtain the estimated remaining power when the vehicle reaches the end position of the current travel route based on the difference between the current remaining power and the current estimated power consumption if the vehicle can reach the end position of the current travel route.

[0026] In an optional manner, the energy consumption simulation includes: automobile economics simulation and vehicle thermal management simulation; the processing module is specifically used for:

[0027] Based on the route parameters and environmental parameters corresponding to the current travel route and in combination with the current driving condition, generating current road spectrum data of the vehicle;

[0028] According to the current road spectrum data, automobile economics simulation and vehicle thermal management simulation are performed on the vehicle to obtain vehicle simulation data, and according to the vehicle simulation data, the current estimated power consumption of the power battery is determined.

[0029] According to another aspect of an embodiment of the present application, a power battery remaining power estimation 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;

[0030] The memory is used to store at least one executable instruction, and the executable instruction enables the processor to perform operations such as the method for estimating the remaining power of a power battery of the present invention.

[0031] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is provided, wherein the storage medium stores at least one executable instruction, wherein the executable instruction enables a power battery remaining power estimation device / equipment to perform operations such as the power battery remaining power estimation method of the present invention.

[0032] The embodiment of the present application performs energy consumption simulation calculation on the vehicle based on the vehicle's current travel route and current driving conditions to determine the current estimated power consumption of the vehicle's power battery; determines whether the vehicle can travel to the terminal position of the current travel route based on the difference between the current remaining power of the power battery and the current estimated power consumption; if the vehicle can travel to the terminal position of the current travel route, then the estimated remaining power of the vehicle when it travels to the terminal position is obtained based on the difference between the current remaining power and the current estimated power consumption, and can determine whether the power battery can meet the vehicle's arrival at the destination based on the actual driving conditions, thereby improving the accuracy of the remaining power estimation, thereby better providing driving reference for users.

[0033] 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

[0034] 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:

[0035] Figure 1 A schematic diagram showing a flow chart of a first embodiment of a method for estimating the remaining power of a power battery provided by the present application;

[0036] Figure 2 A schematic diagram of the process of step S120 is shown;

[0037] Figure 3 A schematic diagram showing a flow chart of a second embodiment of a method for estimating the remaining power of a power battery provided by the present application;

[0038] Figure 4 A schematic diagram showing a flow chart of a third embodiment of a method for estimating the remaining power of a power battery provided in the present application;

[0039] Figure 5 A schematic diagram showing the structure of an embodiment of a power battery remaining capacity estimation device provided by the present application;

[0040] Figure 6 A schematic structural diagram of an embodiment of a power battery remaining power estimation device provided in the present application is shown. DETAILED DESCRIPTION

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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, due to problems such as short driving range and limited charging pile resources, users often have mileage anxiety, especially when the vehicle's power battery SOC is low. The fundamental reason for this phenomenon is that users cannot estimate the remaining mileage of the vehicle based on the remaining SOC of the power battery. Existing technologies alleviate mileage anxiety by shortening charging time, increasing battery power, etc., but do not take the root cause as the starting point. Based on this:

[0046] Figure 1 The flowchart of the first embodiment of the method for estimating the remaining power of a power battery provided by the present application is shown. The method is executed by a device for estimating the remaining power of a power battery. Figure 1 As shown, the method comprises the following steps:

[0047] Step S110: Based on the current travel route and current driving conditions of the vehicle, an energy consumption simulation calculation is performed on the vehicle to determine the current estimated power consumption of the power battery of the vehicle.

[0048] Among them, the vehicle defaults to: pure electric vehicle, which can also be selected according to actual conditions. The current travel route is: a travel route generated based on the vehicle's current position and the destination position entered by the user in the vehicle map on the vehicle's central control display screen. The driving condition is determined at least based on the vehicle's navigation information, driving mode and air conditioning setting parameters. Vehicle energy consumption simulation refers to simulating the energy consumption of the vehicle under different working conditions by establishing a vehicle mathematical model and a simulation environment. In this embodiment, Simulink, Modelica, and energy flow simulation tools can be used to simulate vehicle energy consumption.

[0049] Step S120: Based on the difference between the current remaining power of the power battery and the current estimated power consumption, determine whether the vehicle can travel to the end point of the current travel route.

[0050] Among them, the current estimated power consumption is: the power consumption of the power battery estimated when the vehicle is traveling according to the current travel route at the current moment. The current remaining power is: the remaining power of the vehicle at the current moment. The step of calculating the current remaining power of the power battery is: based on the remaining power calculation formula, calculate the current remaining power of the power battery. The remaining power calculation formula is: SOC1 = Q0 / Q c *SOE*α t *100%; SOC1 is the current remaining power, Q0 is the initial energy of the power battery, Q c is the nominal capacity of the power battery, SOE is the life coefficient of the power battery, α t is the temperature correction coefficient of the power battery.

[0051] It should be noted that the initial energy refers to the energy at the beginning of the vehicle journey (vehicle start). The nominal capacity of the power battery is a fixed value, which can be obtained through bench test experimental data. The nominal capacity is usually marked on the nameplate of the power battery pack. In addition, the temperature correction coefficient of the power battery can also be obtained through the battery bench test data, and the life coefficient of the power battery can be obtained through the message.

[0052] In step S120, Figure 2 As shown, specifically:

[0053] S120A: When the current remaining power is greater than or equal to the current estimated power consumption, it is determined that the vehicle can travel to the end point of the current travel route.

[0054] Among them, if the current remaining power is greater than or equal to the current estimated power consumption, it means that the power battery can provide the vehicle with power to travel to the end point of the current travel route. At this time, it is determined that the vehicle can travel to the end point of the current travel route.

[0055] S120B: When the current remaining power is less than the current estimated power consumption, it is determined that the vehicle cannot travel to the end point of the current travel route.

[0056] Among them, if the current remaining power is the current estimated power consumption, it means that the power battery cannot provide the vehicle with power to travel to the end point of the current travel route. At this time, it is determined that the vehicle cannot travel to the end point of the current travel route.

[0057] Step S130: If the vehicle can travel to the end point of the current travel route, the estimated remaining power when the vehicle reaches the end point is obtained based on the difference between the current remaining power and the current estimated power consumption.

[0058] Among them, if the vehicle can travel to the end point of the current travel route, a prompt message will be output through the vehicle's central control display screen to prompt the user to re-plan the travel route or find the nearest charging station for charging.

[0059] It should be noted that the power battery remaining power estimation device can repeat steps S110 to S130 every preset time period (such as 5 minutes) to update the estimated remaining power according to the real-time changing road conditions and driving conditions.

[0060] The technical solution of this embodiment can determine whether the power battery can meet the needs of the vehicle to reach the destination according to the actual driving conditions, thereby improving the accuracy of the remaining power estimation, thereby providing better driving reference for users.

[0061] Figure 3 The flowchart of the second embodiment of the method for estimating the remaining power of a power battery provided by the present application is shown. The method is executed by a device for estimating the remaining power of a power battery. Figure 3 As shown, the method comprises the following steps:

[0062] Step 210: Based on the route parameters and environmental parameters corresponding to the current travel route and in combination with the current driving conditions, generate the current road spectrum data of the vehicle.

[0063] 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.

[0064] Step 220: Based on the current road spectrum data, perform automobile economics simulation and vehicle thermal management simulation on the vehicle to obtain vehicle simulation data, and determine the current estimated power consumption of the power battery based on the vehicle simulation data.

[0065] Among them, automobile economics simulation mainly uses the principles of system dynamics to build a dynamic model of the vehicle and simulate the interaction and feedback mechanism between different factors. Vehicle thermal management simulation refers to the use of computer technology to model and simulate the automotive thermal management system to analyze its performance under different working conditions and optimize the design accordingly. The specific simulation process is based on the current road spectrum data and the energy consumption boundary of the vehicle, and uses simulation software (Simulink, Modelica and energy flow simulation tools) to simulate and calculate the corresponding model of the vehicle. The vehicle simulation data contains the current operating energy consumption data of the vehicle, and the simulation software is used to obtain the current estimated power consumption of the power battery.

[0066] In step 220, before performing the vehicle economics simulation and the vehicle thermal management simulation on the vehicle according to the current road spectrum data, the method further includes:

[0067] From the stored historical road spectrum data, determine whether there is historical road spectrum data with the same working condition as the current road spectrum data.

[0068] If it does not exist, the steps of performing automobile economics simulation and vehicle thermal management simulation on the vehicle according to the current road spectrum data are executed.

[0069] Among them, the vehicle cloud platform stores a large amount of historical road spectrum data, each of which corresponds to a different vehicle driving condition. Before performing dynamic simulation, it is determined from the stored historical road spectrum data whether there is historical road spectrum data with the same driving condition as the current road spectrum data.

[0070] It should be noted that if there is historical road spectrum data with the same operating conditions as the current road spectrum data, the historical estimated power consumption of the power battery corresponding to the historical road spectrum data is directly determined as the current estimated power consumption of the power battery.

[0071] Step S230: Based on the difference between the current remaining power of the power battery and the current estimated power consumption, determine whether the vehicle can travel to the end point of the current travel route.

[0072] Step S240: If the vehicle can travel to the end point of the current travel route, the estimated remaining power when the vehicle reaches the end point is obtained based on the difference between the current remaining power and the current estimated power consumption.

[0073] The technical solution of this embodiment further obtains estimated power consumption by performing dynamic simulation on the vehicle, so as to determine whether the power battery can meet the vehicle's needs to reach the destination based on actual driving conditions, thereby improving the accuracy of the remaining power estimation and providing better driving reference for users.

[0074] Figure 4The flowchart of the third embodiment of the method for estimating the remaining power of a power battery provided by the present application is shown, and the method is executed by the device for estimating the remaining power of a power battery. Figure 4 As shown, the method comprises the following steps:

[0075] Step S310: Based on the current travel route and current driving conditions of the vehicle, perform energy consumption simulation calculation on the vehicle to determine the current estimated power consumption of the vehicle's power battery.

[0076] Step S320: Based on the difference between the current remaining power of the power battery and the current estimated power consumption, determine whether the vehicle can travel to the end point of the current travel route.

[0077] Step S330: If the vehicle can travel to the end point of the current travel route, the estimated remaining power when the vehicle reaches the end point is obtained based on the difference between the current remaining power and the current estimated power consumption.

[0078] Step S340: Outputting and displaying the estimated remaining power through a preset area of ​​the vehicle.

[0079] Among them, the preset area can be the car system or the in-vehicle map on the central control display screen, and there is no restriction here.

[0080] The technical solution of this embodiment further outputs and displays the estimated remaining power in real time, which allows users to intuitively view the estimated remaining power of the current route, improves the accuracy of the remaining power estimation, and thus provides better driving reference for users.

[0081] Figure 5 The schematic diagram of the structure of the embodiment of the power battery remaining power estimation device provided by the present application is shown. Figure 5 As shown, the device 400 includes: a processing module 410 , a determination module 420 and an estimation module 430 .

[0082] The processing module 410 is used to perform energy consumption simulation calculation on the vehicle based on the current travel route and current driving conditions of the vehicle to determine the current estimated power consumption of the power battery of the vehicle; wherein the driving conditions are determined at least according to the navigation information, driving mode and air conditioning setting parameters of the vehicle;

[0083] A determination module 420, configured to determine whether the vehicle can travel to the end position of the current travel route based on the difference between the current remaining power of the power battery and the current estimated power consumption;

[0084] The estimation module 430 is used to obtain the estimated remaining power when the vehicle reaches the end position of the current travel route based on the difference between the current remaining power and the current estimated power consumption if the vehicle can travel to the end position of the current travel route.

[0085] In an optional manner, the energy consumption simulation includes: automobile economics simulation and vehicle thermal management simulation; the processing module 410 is specifically used for:

[0086] Based on the route parameters and environmental parameters corresponding to the current travel route and in combination with the current driving condition, generating current road spectrum data of the vehicle;

[0087] According to the current road spectrum data, automobile economics simulation and vehicle thermal management simulation are performed on the vehicle to obtain vehicle simulation data, and according to the vehicle simulation data, the current estimated power consumption of the power battery is determined.

[0088] In an optional manner, the device 400 further includes: a judgment module; the judgment module is used to:

[0089] From the stored historical road spectrum data, determine whether there is historical road spectrum data with the same working condition as the current road spectrum data;

[0090] If not present, the step of performing vehicle economics simulation and vehicle thermal management simulation on the vehicle according to the current road spectrum data is executed.

[0091] In an optional manner, the apparatus 400 further includes: a calculation module; the calculation module is used to:

[0092] Based on the remaining power calculation formula, the current remaining power of the power battery is calculated; wherein the remaining power calculation formula is: SOC1 = Q0 / Q c *SOE*α t *100%; SOC1 is the current remaining power, Q0 is the initial energy of the power battery, Q c is the nominal capacity of the power battery, SOE is the life coefficient of the power battery, α t is the temperature correction coefficient of the power battery.

[0093] In an optional manner, the determination module 420 is specifically configured to:

[0094] When the current remaining power is greater than or equal to the current estimated power consumption, determining that the vehicle can travel to the end position of the current travel route;

[0095] When the current remaining power is less than the current estimated power consumption, it is determined that the vehicle cannot travel to the end position of the current travel route.

[0096] In an optional manner, the device 400 further includes: a display module; the display module is used to:

[0097] The estimated remaining power is displayed via an output in a preset area of ​​the vehicle.

[0098] The technical solution of this embodiment can determine whether the power battery can meet the needs of the vehicle to reach the destination according to the actual driving conditions, thereby improving the accuracy of the remaining power estimation, thereby providing better driving reference for users.

[0099] It should be noted that the power battery remaining power estimation device provided in the above embodiment and the power battery remaining power estimation method provided in the above embodiment belong to the same concept, and the specific manner in which each module and unit performs operations has been described in detail in the method embodiment and will not be repeated here.

[0100] Figure 6 A structural schematic diagram of an embodiment of a power battery remaining power estimation device provided in the present application is shown, which shows a structural schematic diagram of a computer system suitable for implementing the power battery remaining power estimation device of the embodiment of the present application. The specific embodiment of the present application does not limit the specific implementation of the power battery remaining power estimation device.

[0101] See also Figure 6 As shown, the power battery remaining power estimation 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 power battery remaining power estimation method is executed.

[0102] Please continue reading Figure 6 As shown, the computer system 500 of the power battery remaining power estimation 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.

[0103] 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.

[0104] 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.

[0105] Another aspect of the present application further provides a computer-readable storage medium having a computer program stored thereon, which implements the above-mentioned method for estimating the remaining power of a power battery when the computer program is executed by a processor. The computer-readable storage medium may be included in the device for estimating the remaining power of a power battery described in the above-mentioned embodiment, or may exist independently without being assembled into the electronic device.

[0106] Another aspect of the present application also provides a computer program product or a computer program, which includes at least one executable instruction. When the executable instruction is executed on the power battery remaining power estimation device / equipment, the power battery remaining power estimation device / equipment executes the power battery remaining power estimation method as described above.

[0107] The executable instructions may be specifically used to enable the power battery remaining power estimation device / apparatus to perform the following operations:

[0108] Based on the current travel route and current driving conditions of the vehicle, an energy consumption simulation calculation is performed on the vehicle to determine the current estimated power consumption of the power battery of the vehicle; wherein the driving conditions are determined at least according to the navigation information, driving mode and air conditioning setting parameters of the vehicle;

[0109] Determining whether the vehicle can travel to the end point of the current travel route based on the difference between the current remaining power of the power battery and the current estimated power consumption;

[0110] If the vehicle can travel to the end point of the current travel route, the estimated remaining power when the vehicle reaches the end point is obtained based on the difference between the current remaining power and the current estimated power consumption.

[0111] In an optional manner, the energy consumption simulation includes: automobile economics simulation and vehicle thermal management simulation; the step of performing energy consumption simulation calculation on the vehicle based on the current travel route and current driving conditions of the vehicle to determine the current estimated power consumption of the power battery of the vehicle further includes:

[0112] Based on the route parameters and environmental parameters corresponding to the current travel route and in combination with the current driving condition, generating current road spectrum data of the vehicle;

[0113] According to the current road spectrum data, automobile economics simulation and vehicle thermal management simulation are performed on the vehicle to obtain vehicle simulation data, and according to the vehicle simulation data, the current estimated power consumption of the power battery is determined.

[0114] In an optional manner, before the step of performing vehicle economics simulation and vehicle thermal management simulation on the vehicle according to the current road spectrum data, the method further includes:

[0115] From the stored historical road spectrum data, determine whether there is historical road spectrum data with the same working condition as the current road spectrum data;

[0116] If not present, the step of performing vehicle economics simulation and vehicle thermal management simulation on the vehicle according to the current road spectrum data is executed.

[0117] In an optional manner, the method further includes:

[0118] Based on the remaining power calculation formula, the current remaining power of the power battery is calculated; wherein the remaining power calculation formula is: SOC1 = Q0 / Q c *SOE*α t *100%; SOC1 is the current remaining power, Q0 is the initial energy of the power battery, Q cis the nominal capacity of the power battery, SOE is the life coefficient of the power battery, α t is the temperature correction coefficient of the power battery.

[0119] In an optional manner, the step of determining whether the vehicle can travel to the end position of the current travel route based on the difference between the current remaining power of the power battery and the current estimated power consumption further includes:

[0120] When the current remaining power is greater than or equal to the current estimated power consumption, determining that the vehicle can travel to the end position of the current travel route;

[0121] When the current remaining power is less than the current estimated power consumption, it is determined that the vehicle cannot travel to the end position of the current travel route.

[0122] In an optional manner, the method further includes:

[0123] The estimated remaining power is displayed via an output in a preset area of ​​the vehicle.

[0124] The technical solution of this embodiment can determine whether the power battery can meet the needs of the vehicle to reach the destination according to the actual driving conditions, thereby improving the accuracy of the remaining power estimation, thereby providing better driving reference for users.

[0125] 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.

[0126] 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.

[0127] 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.

[0128] 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.

[0129] 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.

[0130] 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 method for estimating the remaining power of a power battery, characterized in that: The method comprises: Based on the current travel route and current driving conditions of the vehicle, an energy consumption simulation calculation is performed on the vehicle to determine the current estimated power consumption of the power battery of the vehicle; wherein the driving conditions are determined at least according to the navigation information, driving mode and air conditioning setting parameters of the vehicle; Determining whether the vehicle can travel to the end point of the current travel route based on the difference between the current remaining power of the power battery and the current estimated power consumption; If the vehicle can travel to the end point of the current travel route, the estimated remaining power when the vehicle reaches the end point is obtained based on the difference between the current remaining power and the current estimated power consumption.

2. The method according to claim 1, characterized in that The energy consumption simulation includes: automobile economics simulation and vehicle thermal management simulation; the step of performing energy consumption simulation calculation on the vehicle based on the current travel route and current driving conditions of the vehicle to determine the current estimated power consumption of the power battery of the vehicle further includes: Based on the route parameters and environmental parameters corresponding to the current travel route and in combination with the current driving condition, generating current road spectrum data of the vehicle; According to the current road spectrum data, automobile economics simulation and vehicle thermal management simulation are performed on the vehicle to obtain vehicle simulation data, and according to the vehicle simulation data, the current estimated power consumption of the power battery is determined.

3. The method according to claim 2, characterized in that Before the step of performing automobile economics simulation and vehicle thermal management simulation on the vehicle according to the current road spectrum data, the method further includes: From the stored historical road spectrum data, determine whether there is historical road spectrum data with the same working condition as the current road spectrum data; If not present, the step of performing vehicle economics simulation and vehicle thermal management simulation on the vehicle according to the current road spectrum data is executed.

4. The method according to claim 1, characterized in that: The method further comprises: Based on the remaining power calculation formula, the current remaining power of the power battery is calculated; wherein the remaining power calculation formula is: SOC1 = Q0 / Q c *SOE*α t *100%; SOC1 is the current remaining power, Q0 is the initial energy of the power battery, Q c is the nominal capacity of the power battery, SOE is the life coefficient of the power battery, α t is the temperature correction coefficient of the power battery.

5. The method according to claim 1, characterized in that The step of determining whether the vehicle can travel to the end position of the current travel route based on the difference between the current remaining power of the power battery and the current estimated power consumption further includes: When the current remaining power is greater than or equal to the current estimated power consumption, determining that the vehicle can travel to the end position of the current travel route; When the current remaining power is less than the current estimated power consumption, it is determined that the vehicle cannot travel to the end position of the current travel route.

6. The method according to any one of claims 1 to 5, characterized in that: The method further comprises: The estimated remaining power is displayed via an output in a preset area of ​​the vehicle.

7. A power battery remaining capacity estimation device, characterized in that: The device comprises: A processing module, configured to perform energy consumption simulation calculation on the vehicle based on the current travel route and current driving conditions of the vehicle, and determine the current estimated power consumption of the power battery of the vehicle; wherein the driving conditions are determined at least according to the navigation information, driving mode and air conditioning setting parameters of the vehicle; A determination module, configured to determine whether the vehicle can travel to the end point of the current travel route based on the difference between the current remaining power of the power battery and the current estimated power consumption; The estimation module is used to obtain the estimated remaining power when the vehicle reaches the end position of the current travel route based on the difference between the current remaining power and the current estimated power consumption if the vehicle can reach the end position of the current travel route.

8. The device according to claim 7, characterized in that The energy consumption simulation includes: automobile economics simulation and vehicle thermal management simulation; the processing module is specifically used for: Based on the route parameters and environmental parameters corresponding to the current travel route and in combination with the current driving condition, generating current road spectrum data of the vehicle; According to the current road spectrum data, automobile economics simulation and vehicle thermal management simulation are performed on the vehicle to obtain vehicle simulation data, and according to the vehicle simulation data, the current estimated power consumption of the power battery is determined.

9. A power battery remaining capacity estimation 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 method for estimating the remaining power of a power battery according to any one of claims 1 to 6.

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 power battery remaining power estimation device / equipment, the power battery remaining power estimation device / equipment performs the operation of the power battery remaining power estimation method as described in any one of claims 1-6.

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