Intelligent vehicle charging method and system, vehicle terminal and medium

Abstract

The invention belongs to the technical field of vehicle charging, and particularly relates to a vehicle intelligent charging method and system, a vehicle terminal and a medium, and the method comprises the steps: obtaining target electric quantity and predicted travel time inputted by a user when a vehicle is charged by inserting a gun; identifying whether the fast charging mode can be started to charge to the target electric quantity before the predicted travel time: if yes, querying charging rates of different time periods between the current time and the predicted travel time, and selecting an optimal charging scheme from a money-saving charging mode and a healthy charging mode according to the charging rates; if not, taking the fast charging mode as the optimal charging scheme; and calculating the charging cost required by the optimal charging scheme, and feeding back the charging cost to the user to confirm whether charging is carried out according to the charging scheme or not. According to the invention, the optimal charging scheme can be intelligently recommended to the vehicle owner user, so that the charging demand and preference of the vehicle owner user for the vehicle can be satisfied as much as possible on the premise of completing the vehicle charging, and the vehicle using experience and experience of the vehicle owner user are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of vehicle charging, and specifically relates to a vehicle intelligent charging method, system, vehicle terminal, and medium. Background Art

[0002] At present, new energy vehicle owners mainly use two modes when charging: plug-and-play or scheduled charging. The charging mode is relatively simple and cannot meet the charging needs of car owners for new energy vehicles. For example, most car owners are more sensitive to the impact of charging costs and battery durability. If the vehicle is simply charged without considering the user's preferences or needs, it will greatly reduce the user's car experience. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to propose an intelligent charging strategy to meet the user's requirements for charging cost and battery durability as much as possible, and to intelligently recommend the best charging plan to the user to enhance the user's car experience.

[0004] To achieve the above-mentioned purpose and other related purposes, the present invention provides a vehicle intelligent charging method, including: when the vehicle is plugged in for charging, obtaining the target power and expected travel time input by the user; identifying whether enabling the fast charging mode can charge the vehicle to the target power before the expected travel time: if so, querying the charging rates for different time periods between the current time and the expected travel time, and selecting the optimal charging plan from the money-saving charging mode and the healthy charging mode based on the charging rates; if not, using the fast charging mode as the optimal charging plan; calculating the charging cost required for the optimal charging plan, and feeding it back to the user to confirm whether to charge according to the charging plan.

[0005] According to a specific embodiment of the present invention, the fast charging mode is to charge according to the maximum charging current of the vehicle battery, the money-saving charging mode is to charge according to the maximum charging current of the vehicle battery during periods of relatively low charging rates, and the healthy charging mode is to charge according to the healthy charging current of the vehicle battery.

[0006] According to a specific embodiment of the present invention, the step of identifying whether enabling the fast charging mode can charge the vehicle to the target power before the expected travel time includes: calculating the charging time required for the vehicle to charge from the current power to the target power based on the maximum charging current of the vehicle battery, so as to identify whether the charging can be completed before the expected travel time; wherein the maximum charging current is calculated using an equivalent model of the battery.

[0007] According to a specific embodiment of the present invention, the step of calculating the maximum charging current includes: creating an equivalent internal resistance model of the battery in advance according to the battery parameters provided by the battery manufacturer; wherein the battery parameters include the open circuit voltage, and the correlation coefficient of the open circuit voltage with the battery charge and the battery temperature, the internal resistance, and the correlation coefficient of the internal resistance with the battery charge and the battery temperature; obtaining the current terminal voltage of the vehicle battery according to the equivalent internal resistance model, and calculating the corresponding maximum charging current based on the correlation coefficient between the terminal voltage and the current charge, the current temperature, and the charging current with the battery charge and the battery temperature.

[0008] According to a specific embodiment of the present invention, the step of calculating the healthy charging current includes: taking the time from the current time to the expected travel time as the charging time, and calculating the first intermediate value of the corresponding charging current based on the current power of the vehicle battery and the target power; selecting the larger one from the minimum charging current of the vehicle battery and the first intermediate value as the second intermediate value, and selecting the smaller one from the maximum charging current of the vehicle battery and the second intermediate value as the healthy charging current.

[0009] According to a specific embodiment of the present invention, the steps of querying the charging rates for different time periods between the current time and the expected travel time, and selecting the optimal charging plan from the money-saving charging mode and the healthy charging mode based on the charging rates include: obtaining the charging rates for different time periods between the current time and the expected travel time, and identifying the fluctuations in the charging rates: if the charging rates for different time periods between the current time and the expected travel time are consistent, the healthy charging mode is selected as the optimal charging plan; if the charging rates for different time periods between the current time and the expected travel time fluctuate, the money-saving charging mode is selected as the optimal charging plan.

[0010] According to a specific embodiment of the present invention, the step of calculating the charging cost required for the optimal charging plan includes: calculating the corresponding charging power within a unit time based on the charging current corresponding to the charging plan and the capacity of the vehicle battery, and counting the number of iterations of the charging power calculation within a unit time to obtain the charging time for the vehicle battery to charge from the current power to the target power; calculating the corresponding charging cost based on the charging time and the charging rates for different time periods between the current time and the expected travel time.

[0011] A vehicle intelligent charging system includes: a charging response module, which is used to obtain a target power and an estimated travel time input by a user when the vehicle is plugged in for charging; an intelligent recommendation module, which is used to identify whether enabling a fast charging mode can charge the vehicle to the target power before the estimated travel time: if so, query the charging rates for different time periods between the current time and the estimated travel time, and select the optimal charging plan from a money-saving charging mode and a healthy charging mode based on the charging rates; if not, use the fast charging mode as the optimal charging plan; and a user confirmation module, which is used to calculate the charging cost required for the optimal charging plan and feed it back to the user to confirm whether to charge according to the charging plan.

[0012] A vehicle terminal includes a processor, wherein the processor is coupled to a memory, wherein the memory stores program instructions, and when the program instructions stored in the memory are executed by the processor, the above-mentioned method is implemented.

[0013] A computer-readable storage medium includes a program. When the program is run on a computer, the computer is enabled to execute the method described above.

[0014] The present invention provides a vehicle intelligent charging method, which can intelligently recommend the optimal charging plan to the car owner, so as to meet the car owner's charging needs and preferences for the vehicle as much as possible under the premise of completing the vehicle charging, so as to enhance the car owner's car feeling and experience, and facilitate the realization of intelligent travel services. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of a specific embodiment of a vehicle intelligent charging method provided by the present invention; Figure 2 A schematic diagram of a specific embodiment of a battery equivalent model provided by the present invention; Figure 3 A schematic diagram of the structure of a specific embodiment of a vehicle intelligent charging system provided by the present invention; Figure 4 This is a structural block diagram of a specific embodiment of a vehicle terminal provided by the present invention. DETAILED DESCRIPTION

[0016] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0018] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0019] In the following description, numerous details are discussed to provide a more thorough explanation of the embodiments of the present invention. However, it is obvious to those skilled in the art that the embodiments of the present invention can be implemented without these specific details. In other embodiments, well-known structures and devices are shown in the form of block diagrams rather than in detail to avoid making the embodiments of the present invention difficult to understand.

[0020] Example 1 See also Figure 1 A vehicle intelligent charging method is shown, comprising: Step S100, when the vehicle is plugged in for charging, the target power and estimated travel time input by the user are obtained.

[0021] Step S200, identifying whether enabling the fast charging mode can charge the battery to the target power level before the estimated travel time: Step S210: If yes, query the charging rates for different time periods between the current time and the expected travel time, and select the best charging plan from the money-saving charging mode and the healthy charging mode based on the charging rates.

[0022] Step S220: If not, the fast charging mode is used as the optimal charging solution.

[0023] Step S300, calculating the charging cost required for the optimal charging plan, and feeding it back to the user to confirm whether to charge according to the charging plan.

[0024] First of all, it should be noted that in this embodiment, three charging modes are defined according to the preferences and needs of car owners for vehicle charging, including fast charging mode, money-saving charging mode, and healthy charging mode. Among them, the fast charging mode is mainly aimed at time-sensitive charging needs, so that the vehicle can be fully charged to the target power in the shortest possible time; the healthy charging mode is mainly aimed at the needs of caring for and protecting the vehicle, charging with a relatively small current without affecting the travel of the car owner, thereby increasing the service life of the vehicle battery pack; the money-saving charging mode is mainly aimed at the charging needs of economical vehicles, by identifying the peak and valley periods of electricity prices and charging during periods with lower electricity prices, thereby reducing the charging costs of car owners.

[0025] Therefore, based on the fast charging mode, the vehicle battery needs to be charged with the maximum charging current to reduce the charging time. Based on the healthy charging mode, the vehicle battery needs to be charged with the healthy charging current to avoid long-term charging with the maximum charging current and affecting the battery durability. Based on the money-saving charging mode, the vehicle battery is charged with the maximum charging current during periods of low charging rates (electricity prices) to minimize charging costs.

[0026] It should be noted here that since the user has set the estimated travel time for the vehicle, the time period available for charging of the corresponding vehicle is from the current time to the estimated travel time. If charging is carried out using the maximum charging current, charging may be completed in advance, that is, charging may be completed before the estimated travel time.

[0027] In order to avoid long-term charging at the maximum charging current and affecting the battery life, we can make full use of the time period available for charging, that is, by extending the time required to charge to the target power between the current time and the expected travel time, we can reduce the required charging current (charging with a current smaller than the maximum charging current). The charging current when using this charging strategy is the healthy charging current.

[0028] To this end, the method of obtaining the maximum charging current and healthy charging current of the vehicle battery can be referred to as follows: First, a corresponding equivalent model is established based on the characteristic information of the battery to obtain the charging current under different charging modes. In this embodiment, the corresponding charging current is calculated by constructing an equivalent internal resistance model of the battery, but in practical applications it is not limited to this equivalent circuit model. Without making too many restrictions on this, the modifications and embellishments made to the embodiments of the present invention by those skilled in the art without departing from the spirit of the present invention still fall within the scope of the invention application of the present invention.

[0029] Specifically, Figure 2 As shown, is the open circuit voltage of the battery, is the terminal voltage of the battery, is the internal resistance of the battery, is the charging current of the battery. During the charging process, the relationship between the open circuit voltage, terminal voltage and internal resistance of the battery can be approximately expressed as: , Among them, the open circuit voltage and internal resistance The change pattern of the battery belongs to the characteristic information of the battery, which can be obtained through the parameters SOC (State of Charge, remaining power) and battery temperature provided by the manufacturer. Look up the table and get Indicates open circuit voltage With the battery SOC and The correlation coefficient of the change, Indicates internal resistance With the battery SOC and The correlation coefficient of the change.

[0030] Therefore, based on the equivalent internal resistance model of the battery, once the current battery power, temperature and other information are obtained, various battery parameters can be obtained accordingly, including the current maximum charging current. Here the maximum charging current of the vehicle battery It can be expressed as: , in, Indicates charging current With the battery SOC and The correlation coefficient of the change is also provided by the manufacturer. In practical applications, the maximum charging current of the vehicle battery It also reflects the current charging capacity of the battery based on the lookup values ​​of battery power, terminal voltage, and temperature.

[0031] Secondly, the calculation formula for healthy charging current is as follows: , in, Indicates the current charge level of the vehicle battery before charging begins. Indicates the target power of the vehicle battery for this charging, that is, the target power input by the owner. Indicates the current time, that is, when the vehicle is plugged in for charging, and Indicates the next time the vehicle is used, that is, the estimated travel time entered by the owner. and They respectively represent the maximum charging current and minimum charging current of the vehicle battery.

[0032] From the above, it can be seen that an intermediate value between the maximum charging current and the minimum charging current is calculated through the amount of electricity that the vehicle battery needs to be charged and the actual charging time, and when the intermediate value is exactly between the maximum charging current and the minimum charging current, it is selected as the healthy charging current. It can be understood here that in actual applications, due to the influence of charging time and charging amount, the calculated intermediate value may be less than the minimum charging current, or greater than the maximum charging current. Therefore, it is necessary to perform identification and judgment accordingly, that is, select the larger one from the calculated first intermediate value and the minimum charging current as the second intermediate value, and then select the smaller one from the second intermediate value and the maximum charging current as the healthy charging current, so as to avoid the calculated intermediate value exceeding the normal range of the charging current.

[0033] Based on the above, it can be understood that enabling the fast charging mode can quickly charge the vehicle battery, and although the money-saving charging mode also charges according to the maximum charging current, that is, the time required to charge the vehicle battery to the target power is the same as the fast charging mode, but because the electricity price is different in different time periods, in order to save charging costs, the vehicle charging process needs to be arranged during the period with lower electricity prices, thereby extending the entire charging time span. The healthy charging mode reasonably calculates a healthier charging current based on the required charging power within the expected charging time to avoid excessive charging current affecting the battery life.

[0034] Therefore, according to the differences in actual application scenarios of different charging modes, it is necessary to select the optimal charging solution and recommend it to the user for confirmation.

[0035] In this regard, when the vehicle starts to charge, it will first determine whether fast charging mode can complete charging based on the target power input by the user and the expected travel time. If the fast charging mode cannot charge the vehicle battery to the target power before the expected travel time, it means that the money-saving charging mode will inevitably fail to complete charging. At the same time, in order to ensure that it does not affect the user's normal use of the car, the healthy charging mode is not a correct choice. At this time, the fast charging mode is the current optimal charging solution. Even if the vehicle battery cannot be charged to the target power before the expected travel time, it can charge as much power as possible compared to other charging modes, maximizing the user's normal use of the car.

[0036] When the fast charging mode can complete the vehicle charging, the healthy charging mode and the money-saving charging mode can be further considered. Accordingly, first query the charging rate (electricity price) of different time periods between the current time and the estimated travel time entered by the user, so as to identify the fluctuation of the charging rate. If the charging rate is inconsistent, it means that there are peak and valley time periods of electricity price, that is, the period of lowest electricity price, then the money-saving charging mode should be used first to reduce the charging cost of the car owner.

[0037] In a specific embodiment, it is assumed that the starting time of charging of a vehicle is 8:00, the estimated travel time is 21:00, and the charging rate information during this time period is as follows.

[0038] Table 1 Original charging rate table

[0039] Then the charging rates in the original charging rate table can be sorted from low to high, and the resulting charging priority schedule is as follows: Table 2 Charging priority schedule

[0040] The charging priority schedule reflects the priority of each charging period in the money-saving charging mode, that is, the battery should be charged in the time period of priority 1 as much as possible. If the vehicle SOC cannot reach the target SOC in the time period of priority 1, then the vehicle should be charged in the time periods of priority 1 and 2. If the vehicle SOC cannot reach the target SOC in the time periods of priority 1 and 2, then the vehicle should be charged in the time periods of priority 1, 2, 3, and so on.

[0041] At this time, the money-saving charging mode is the best charging solution.

[0042] When the charging rates for all time periods are the same, it means that the owner's demand for economical use of the vehicle can no longer be met. In this case, the maximum charging current can be avoided as much as possible to ensure the battery life and meet the owner's demand for caring for and protecting the vehicle. At this time, the healthy charging mode is the best charging solution.

[0043] Based on the above optimal charging plan, the corresponding charging cost can be calculated and fed back to the user to confirm whether charging is required according to the charging plan.

[0044] To this end, it is first necessary to obtain the charging time, and then calculate the corresponding charging fee based on the charging rates in different time periods.

[0045] Specifically, the battery SOC during the charging process can be expressed as:

[0046]

[0047] in, is the initial SOC of the vehicle, that is, the SOC of the vehicle at the current time, is the battery capacity, is the simulation step length. Based on the above formula, by obtaining the iteration number k of the battery SOC during the charging process, k is a non-zero integer that starts counting from 0 and gradually accumulates, the corresponding charging time can be calculated accordingly. It can be understood here that represents the initial power before a certain iteration begins, Indicates the actual power after the end of this iteration, which corresponds to one iteration, and one iteration indicates the battery life per unit time. The charge level inside.

[0048] Therefore, according to the current power and target power of the vehicle battery, and the charging current corresponding to the optimal charging scheme per unit time, The charging capacity within can be used to calculate the number of iterations of the battery SOC, that is: , in, Indicates the time to start charging. represents the end charging time, n represents n iterations, The charging time is greater than the target power preset by the user. .

[0049] It is understandable that the charging time of the healthy charging mode is the time from the current time to the expected travel time, and there is no need to calculate according to the above formula. At the same time, when the optimal charging solution is the fast charging mode, it means that the vehicle cannot be fully charged before the expected travel time, and it needs to be charged at the maximum charging current to charge as much electricity as possible. The corresponding charging time is also the time from the current time to the expected travel time. Therefore, the charging time needs to be calculated only when the optimal charging solution is the money-saving charging mode, so as to give priority to charging in the time period with lower charging rates among all time periods between the current time and the expected travel time.

[0050] For fast charging mode, healthy charging mode, and money-saving charging mode, the corresponding charging cost can be calculated according to the corresponding charging current by referring to the following formula: , Among them, C represents the charging cost, represents the charging current during a certain iteration, represents the voltage during a certain iteration, Represents the charging rate during a certain iteration. It can be understood here that no matter which charging mode is used, when the charging rates in different time periods are the same, the corresponding sum can be directly calculated. When the charging rates in different time periods are inconsistent, the charging costs in different charging time periods need to be calculated, and finally the total charging cost is calculated by summing up.

[0051] Finally, no matter which charging mode is adopted, the corresponding charging cost can be calculated and fed back to the user to confirm whether to charge according to the optimal charging plan recommended by the intelligent system. If the user does not confirm, the charging time and charging cost corresponding to all charging modes can also be fed back to the user for independent selection. There are no excessive restrictions on this. The modifications and embellishments made to the embodiments of the present invention by those skilled in the art without departing from the spirit of the present invention still fall within the scope of the invention patent application of the present invention.

[0052] It should be noted that the step division of the above methods is only for clear description. When implemented, they can be combined into one step or some steps can be split and decomposed into multiple steps. As long as they contain the same logical relationship, they are all within the scope of protection of this patent; adding insignificant modifications to the algorithm or process or introducing insignificant designs without changing the core design of the algorithm and process are all within the scope of protection of this patent.

[0053] Example 2 See also Figure 3 As shown, this embodiment also provides a vehicle intelligent charging system, including: The charging response module 10 is used to obtain the target power and estimated travel time input by the user when the vehicle is plugged in for charging.

[0054] The intelligent recommendation module 20 is used to identify whether enabling the fast charging mode can charge the target power before the expected travel time: if so, query the charging rates for different time periods between the current time and the expected travel time, and select the best charging plan from the money-saving charging mode and the healthy charging mode based on them; if not, use the fast charging mode as the best charging plan.

[0055] The user confirmation module 30 is used to calculate the charging fee required for the optimal charging plan and feed it back to the user to confirm whether to charge according to the charging plan.

[0056] It should be noted that the vehicle intelligent charging system provided in the above embodiment and the vehicle intelligent charging method provided in the above embodiment 1 belong to the same concept, wherein 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. In practical applications, the vehicle intelligent charging method provided in the above embodiment 1 can allocate the above functions to different functional modules as needed, that is, divide the internal structure of the device into different functional modules to complete all or part of the functions described above, and this is not limited here.

[0057] Example 3 See also Figure 4As shown, an embodiment of the present application further provides a vehicle terminal, comprising a memory 2, a processor 1, and a program stored in the memory and executable on the processor, wherein the processor implements the steps of any of the above methods when executing the program.

[0058] Among them, the memory includes at least one type of readable storage medium, and the readable storage medium includes flash memory, mobile hard disk, multimedia card, card-type memory (for example: SD or DX memory, etc.), magnetic memory, disk, optical disk, etc. In some embodiments, the memory can be an internal storage unit of the vehicle terminal, such as a mobile hard disk of the vehicle terminal. In other embodiments, the memory can also be an external storage device of the vehicle terminal, such as a plug-in mobile hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc. equipped on the vehicle terminal. Furthermore, the memory can also include both an internal storage unit of the vehicle terminal and an external storage device. The memory can be used not only to store application software and various types of data installed in the vehicle terminal, but also to temporarily store data that has been output or is to be output.

[0059] In some embodiments, the processor may be composed of an integrated circuit, for example, a single packaged integrated circuit, or a plurality of packaged integrated circuits with the same or different functions, including one or more central processing units (CPUs), microprocessors, digital processing chips, graphics processors, and a combination of various control chips. The processor is the control core (Control Unit) of the vehicle terminal, and uses various interfaces and lines to connect various components of the entire vehicle terminal, and executes various functions of the vehicle terminal and processes data by running or executing programs or modules stored in the memory, and calling data stored in the memory.

[0060] The processor executes the operating system of the vehicle terminal and various installed application programs. The processor executes the application programs to implement the steps in the above method embodiment.

[0061] Exemplarily, the program may be divided into one or more modules, which are stored in the memory and executed by the processor to complete the present invention. The one or more modules may be a series of program instruction segments capable of completing specific functions, which are used to describe the execution process of the program in the vehicle terminal.

[0062] The above-mentioned integrated unit implemented in the form of software function modules can be stored in a computer-readable storage medium. The above-mentioned software function modules are stored in a storage medium and include several instructions for enabling a computer device (which can be a personal computer, a computer device, or a network device, etc.) or a processor to perform part of the functions of various embodiments of the present invention.

[0063] To sum up, the present invention provides a vehicle intelligent charging method, which can intelligently recommend the optimal charging plan for the car owner, so as to meet the car owner's charging needs and preferences for the vehicle as much as possible under the premise of completing the vehicle charging, so as to enhance the car owner's car feeling and experience, and facilitate the realization of intelligent travel services.

[0064] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by a person of ordinary skill in the art without departing from the spirit and technical ideas disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A vehicle intelligent charging method, characterized in that: include: When the vehicle is plugged in for charging, the target power and estimated travel time entered by the user are obtained; Identify whether enabling the fast charging mode can charge the battery to the target power level before the estimated travel time: If yes, query the charging rates for different time periods between the current time and the estimated travel time, and select the best charging plan from the money-saving charging mode and the healthy charging mode based on the charging rates; If not, the fast charging mode is used as the optimal charging solution; The charging cost required for the optimal charging plan is calculated and fed back to the user to confirm whether to charge according to the charging plan.

2. The vehicle intelligent charging method according to claim 1, characterized in that: The fast charging mode is to charge according to the maximum charging current of the vehicle battery, the money-saving charging mode is to charge according to the maximum charging current of the vehicle battery during periods of relatively low charging rates, and the healthy charging mode is to charge according to the healthy charging current of the vehicle battery.

3. The vehicle intelligent charging method according to claim 2, characterized in that: The step of identifying whether enabling the fast charging mode can charge the battery to the target power level before the estimated travel time includes: Calculating the charging time required for the vehicle to be charged from the current power level to the target power level based on the maximum charging current of the vehicle battery, so as to identify whether the charging can be completed before the estimated travel time; The maximum charging current is calculated using an equivalent model of the battery.

4. The vehicle intelligent charging method according to claim 3, characterized in that: The step of calculating the maximum charging current comprises: Pre-create an equivalent internal resistance model of the battery based on the battery parameters provided by the battery manufacturer; wherein the battery parameters include the open circuit voltage, and the correlation coefficient of the open circuit voltage with the battery power and the battery temperature, the internal resistance, and the correlation coefficient of the internal resistance with the battery power and the battery temperature; The current terminal voltage of the vehicle battery is obtained according to the equivalent internal resistance model, and the corresponding maximum charging current is calculated based on the correlation coefficient between the current terminal voltage and the current power, the current temperature, and the charging current as the battery power and the battery temperature change.

5. The vehicle intelligent charging method according to claim 2, characterized in that: The steps of calculating the healthy charging current include: The time between the current time and the estimated travel time is taken as the charging time, and a first intermediate value of the corresponding charging current is calculated according to the current power of the vehicle battery and the target power; A larger one is selected from the minimum charging current of the vehicle battery and the first intermediate value as the second intermediate value, and a smaller one is selected from the maximum charging current of the vehicle battery and the second intermediate value as the healthy charging current.

6. The vehicle intelligent charging method according to claim 1, characterized in that: The steps of querying the charging rates of different time periods between the current time and the estimated travel time, and selecting the optimal charging scheme from the money-saving charging mode and the health charging mode according to the charging rates include: Get the charging rates for different time periods between the current time and the estimated travel time, and identify the fluctuations in the charging rates: If the charging rates at different time periods between the current time and the estimated travel time are consistent, the healthy charging mode is selected as the optimal charging solution; If there is a fluctuation in charging rates at different time periods between the current time and the estimated travel time, the money-saving charging mode is selected as the optimal charging solution.

7. The vehicle intelligent charging method according to claim 1, characterized in that: The steps to calculate the charging cost required for the optimal charging solution include: Calculating the corresponding charging power in unit time according to the charging current corresponding to the charging scheme and the capacity of the vehicle battery, and counting the number of iterations of the charging power calculation in unit time to obtain the charging time for the vehicle battery to charge from the current power to the target power; The corresponding charging fee is calculated according to the charging time, the charging rates of different time periods between the current time and the expected travel time.

8. A vehicle intelligent charging system, characterized in that: include: The charging response module is used to obtain the target power and estimated travel time input by the user when the vehicle is plugged in for charging; An intelligent recommendation module is used to identify whether the target power can be charged before the estimated travel time by enabling the fast charging mode: if so, query the charging rates of different time periods between the current time and the estimated travel time, and select the best charging plan from the money-saving charging mode and the healthy charging mode based on the charging rates; If not, fast charging mode is used as the optimal charging solution; The user confirmation module is used to calculate the charging fee required for the optimal charging plan and feed it back to the user to confirm whether to charge according to the charging plan.

9. A vehicle terminal, characterized in that: The method comprises a processor, wherein the processor is coupled to a memory, wherein the memory stores program instructions, and when the program instructions stored in the memory are executed by the processor, the method according to any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium, characterized in that: The invention comprises a program, which, when being executed on a computer, causes the computer to execute the method according to any one of claims 1 to 7.

Images