Electric vehicle charging control method, device, equipment and medium

Abstract

The present invention provides an electric vehicle charging control method, device, equipment and medium, wherein the electric vehicle charging control method comprises: obtaining the current electricity price, the historical electricity price waveform and the current power of the target vehicle; comparing the current electricity price with the historical electricity price waveform to generate a first control variable; comparing the current power with a preset low power value and a preset high power value to generate a second control variable; generating a charging control instruction for controlling the charging of the target vehicle according to the first control variable and the second control variable, wherein the charging instruction at least includes a charging instruction and a stop charging instruction. This scheme realizes the intelligent charging of electric vehicles and can effectively save charging costs.

Description

Technical Field

[0001] The present application relates to the technical field of electric vehicle charging, and in particular to an electric vehicle charging control method, device, electronic device and computer-readable storage medium. Background Art

[0002] At present, when charging an electric vehicle, the owner is often required to control the charging process of the electric vehicle at the charging site. The operations required by the owner at the charging site include stopping charging midway, restarting charging, etc. However, due to the long charging time, the owner cannot stay at the charging site for a long time and cannot stop or restart the charging process according to the current charging situation. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, the present invention provides an electric vehicle charging control method, device, equipment and medium to solve the above-mentioned technical problems.

[0004] The electric vehicle charging control method provided by the present invention comprises:

[0005] Obtain the current electricity price, historical electricity price waveform, and current power consumption of the target vehicle;

[0006] Based on the current electricity price and the historical electricity price waveform diagram, obtaining a first control variable;

[0007] Based on the current power and a preset low power value and a preset high power value, a second control variable is obtained;

[0008] A charging control instruction for controlling charging of the target vehicle is generated according to the first control variable and the second control variable, wherein the charging instruction at least includes a charging instruction and a charging stop instruction.

[0009] In one embodiment of the present invention, the current electricity price is compared with the historical electricity price waveform to generate a first control variable, including:

[0010] Determine the middle value between the peak value and the trough value according to the peak value and the trough value in the historical electricity price waveform diagram;

[0011] The current electricity price is compared with the intermediate value to obtain the first control variable.

[0012] In one embodiment of the present invention, generating a charging control instruction for controlling charging of a target vehicle according to the first control variable and the second control variable includes:

[0013] If the current power level is less than the preset low power value, a charging instruction is generated;

[0014] If the current power level is between a preset low power level and a preset high power level, and the current electricity price is lower than the intermediate value, a charging instruction is generated;

[0015] If the current power level is between a preset low power level and a preset high power level, and the current electricity price is higher than the intermediate value, a stop charging instruction is generated;

[0016] If the current power level is greater than the preset high power level, a stop charging instruction is generated.

[0017] In one embodiment of the present invention, the process of generating a charging control instruction for controlling charging of a target vehicle further includes:

[0018] Get the current time and the target vehicle owner's preset departure and return time;

[0019] Compare the current time with the preset departure and return time to determine the time difference between the current time and the preset departure and return time;

[0020] Comparing the time difference with a preset difference value to generate a third control variable;

[0021] The charging control instruction is obtained according to the first control variable, the second control variable and the third control variable.

[0022] In one embodiment of the present invention, obtaining the charging control instruction according to the first control variable, the second control variable and the third control variable includes:

[0023] If the current power level is between a preset low power level and a preset high power level, the current electricity price is higher than the middle value, and the time difference is less than a preset difference, a charging instruction is generated;

[0024] If the current power level is between a preset low power level and a preset high power level, the current electricity price is higher than the middle value, and the time difference is greater than a preset difference, a stop charging instruction is generated.

[0025] In one embodiment of the present invention, after obtaining the second control variable based on the current power level and the preset low power level and the preset high power level, the method further includes:

[0026] If the current power level is lower than the preset low power level, obtaining the current location information of the target vehicle and the charging location information of the nearby charging stations;

[0027] Navigation route information from the current position to a nearby charging station is generated based on the current position information and the charging position information to instruct the target vehicle to proceed thereto.

[0028] The electric vehicle charging control device provided by the present invention comprises:

[0029] An information acquisition module is used to obtain the current electricity price, the historical electricity price waveform, and the current power of the target vehicle;

[0030] A first comparison module, configured to obtain a first control variable based on the current electricity price and the historical electricity price waveform diagram;

[0031] A second comparison module, configured to obtain a second control variable based on the current power level and a preset low power level and a preset high power level;

[0032] The charging control instruction generating module is used to generate a charging control instruction for controlling the charging of the target vehicle according to the first control variable and the second control variable, wherein the charging instruction at least includes a charging instruction and a charging stop instruction.

[0033] The electronic device provided by the present invention comprises:

[0034] one or more processors;

[0035] The storage device is used to store one or more programs. When the one or more programs are executed by the one or more processors, the electronic device implements the electric vehicle charging control method.

[0036] The computer-readable storage medium provided by the present invention stores a computer program thereon, and when the computer program is executed by a processor of a computer, the computer is enabled to execute the electric vehicle charging control method.

[0037] Beneficial effects of the present invention: The present invention combines the current power, current electricity price and historical electricity price waveform diagram to make a comprehensive judgment on whether to charge, so as to reduce the charging electricity fee when the electric vehicle is automatically charged.

[0038] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0040] Figure 1 is a flow chart of an electric vehicle charging control method shown in an exemplary embodiment of the present application;

[0041] Figure 2 is a block diagram of an electric vehicle charging control device shown in an exemplary embodiment of the present application;

[0042] Figure 3 A schematic diagram of the structure of a computer system suitable for implementing an electronic device of an embodiment of the present application is shown. DETAILED DESCRIPTION

[0043] The following will describe the embodiments of the present invention with reference to the accompanying drawings and preferred embodiments. 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 understood that the preferred embodiments are only for illustrating the present invention, not for limiting the scope of protection of the present invention.

[0044] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0045] 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.

[0046] See also Figure 1 , Figure 1 It is a flow chart of an electric vehicle charging control method shown in an exemplary embodiment of the present application.

[0047] like Figure 1 As shown, in an exemplary embodiment, the electric vehicle charging control method includes at least steps S110 to S140, which are described in detail as follows:

[0048] Step S110, obtaining the current electricity price, the historical electricity price waveform and the current electricity amount of the target vehicle.

[0049] First of all, it should be noted that the current electricity price refers to the price that should be paid for each kilowatt of electricity consumed at the current moment. The historical electricity price waveform is a state diagram of electricity price changes at each moment within a preset time. The historical electricity price waveform includes peaks and troughs, and the historical electricity price waveform is updated in real time as the current electricity price changes.

[0050] Illustratively, the historical electricity price waveform reflects the change in electricity prices within half a year.

[0051] Step S120: obtaining a first control variable based on the current electricity price and the historical electricity price waveform.

[0052] It is worth noting that the first control variable reflects whether charging is economical at the current electricity price. If the current electricity price is too high, it means that charging is not economical at this time. If the current electricity price is significantly lower than the historical electricity price, it means that charging is very economical at this time.

[0053] Step S130, obtaining a second control variable based on the current power level and a preset low power level and a preset high power level.

[0054] It is worth noting that the second comparison result reflects whether the target vehicle needs to be charged. When the current power is lower than the preset low power value, it indicates that charging is required. If the current power is between the preset low power value and the preset high power value, it indicates that charging is possible or not. In this state, charging can be considered when the electricity price is low. If the current power is higher than the preset high power value, it indicates that the power is sufficient and charging is no longer required.

[0055] Exemplarily, the preset low power value is 50% of the remaining power, and the preset high power value is 100% of the remaining power.

[0056] Step S140: generating a charging control instruction for controlling charging of the target vehicle according to the first control variable and the second control variable, wherein the charging instruction at least includes a charging instruction and a charging stop instruction.

[0057] In this embodiment, the first control variable and the second control variable are used to determine whether charging is currently being performed or stopped. In the charging state, the charging gun is in a locked state, and in the locked state, the charging gun cannot be removed from the vehicle. In the stopped charging state, the charging gun is in an unlocked state, and in the unlocked state, the charging gun can be removed from the vehicle.

[0058] In an exemplary embodiment, in step S120, the process of generating the first control variable based on the current electricity price and the historical electricity price waveform diagram includes at least steps S210 and S220.

[0059] Step S210: determining an intermediate value between the peak value and the trough value according to the peak value and the trough value in the historical electricity price waveform diagram.

[0060] In this embodiment, the middle value between the peak value and the valley value is used as one of the criteria for determining whether to charge.

[0061] Exemplarily, the median value=(|peak value|-|trough value|) / 2.

[0062] Step S220: Compare the current electricity price with the intermediate value to obtain the first control variable.

[0063] In an exemplary embodiment, in step S140, the process of generating a charging control instruction for controlling charging of the target vehicle according to the first control variable and the second control variable includes:

[0064] Step S310: If the current power level is less than a preset low power level, a charging instruction is generated.

[0065] It is worth noting that when the current power level is less than the preset low power value, it indicates that the power level is low at this time. In order to ensure the normal use of the target vehicle, the target vehicle needs to be charged.

[0066] Step S320: If the current power level is between a preset low power level and a preset high power level, and the current electricity price is lower than the intermediate value, a charging instruction is generated.

[0067] It is worth noting that if the current power level is between the preset low power level and the preset high power level, it means that it is possible to choose whether to charge the target vehicle according to the current electricity price. When the current electricity price is lower than the middle value, the charging gun is locked and charging is performed.

[0068] Step S330: If the current power level is between a preset low power level and a preset high power level, and the current electricity price is higher than the middle value, a stop charging instruction is generated.

[0069] It should be noted that if the current power level is between the preset low power level and the preset high power level, it means that you can choose whether to charge the target vehicle based on the current electricity price. Since the current electricity price is higher than the middle value, charging can be temporarily stopped until the current electricity price is lower than the middle value before charging the target vehicle. During the charging suspension process, the charging gun is unlocked. If another vehicle is in urgent need of charging, the charging gun can be removed from the target vehicle.

[0070] Step S340: If the current power level is greater than a preset high power level, a stop charging instruction is generated.

[0071] It is worth noting that when the current power level is higher than the preset high power level, it means that the target vehicle does not need to be charged anymore.

[0072] In an exemplary embodiment, the process of generating a charging control instruction for controlling charging of a target vehicle may further include steps S410 to S440.

[0073] Step S410, obtaining the current time and the preset departure and return time of the owner of the target vehicle.

[0074] It should be noted that it takes a long time to charge an electric vehicle, and the charging time may be extended due to interruptions in the middle of the process. Therefore, the owner may not wait for the charging to be completed at the charging site. The current time and the preset departure and return time are obtained so that charging can be carried out according to the owner's return time to ensure that charging can be completed when the owner returns.

[0075] Step S420, comparing the current time with the preset departure and return time, and determining the time difference between the current time and the preset departure and return time.

[0076] Exemplarily, the time difference = preset departure and return time - current time.

[0077] Step S430: Compare the time difference with a preset difference value to generate a third control variable.

[0078] For example, the preset difference value can be determined based on the charging time required to charge the current power to the preset high power value, so that the charging can be completed before the owner returns.

[0079] Exemplarily, the charging capacity is determined according to the difference between the power at the previous moment and the current power, and the time consumption is determined according to the difference between the time at the previous moment and the current time. The charging efficiency is determined based on the charging capacity and the time consumption. The preset difference is determined based on the charging efficiency and the current remaining power.

[0080] Exemplarily, the preset difference = current power*(current time-previous time) / (current power-previous power)+fixed value.

[0081] The fixed value is a fixed value, for example, 30 minutes, which can be set according to demand to provide sufficient time for charging the target vehicle.

[0082] Step S440: Obtain the charging control instruction according to the first control variable, the second control variable and the third control variable.

[0083] It can be seen that this embodiment not only considers the influence of electricity price and remaining power on charging control, but also considers the influence of the owner's return time on charging control.

[0084] In an exemplary embodiment, in step S440, the process of obtaining the charging control instruction according to the first control variable, the second control variable and the third control variable includes at least step S510 and step S520.

[0085] Step S510: If the current power level is between a preset low power level and a preset high power level, the current electricity price is higher than the middle value, and the time difference is less than a preset difference, a charging instruction is generated.

[0086] It is worth noting that when the time difference is less than the preset difference, it means that if you want to complete charging before the owner returns, you need to execute the charging command immediately.

[0087] Step S520: If the current power level is between a preset low power level and a preset high power level, the current electricity price is higher than the middle value, and the time difference is greater than a preset difference, a stop charging instruction is generated.

[0088] It should be noted that when the time difference is greater than the preset difference, it means that there is plenty of time for charging. At this time, you can wait until the electricity price drops before charging. Therefore, a stop charging instruction is generated until the current electricity price is lower than the middle value or the time difference is less than the preset difference, and then charging is restarted.

[0089] In an exemplary embodiment, in step S120, based on comparing the current power level with a preset low power level and a preset high power level, the process after generating the second control variable further includes steps S610 and S620.

[0090] Step S610: If the current power level is lower than the preset low power level, the current location information of the target vehicle and the charging location information of nearby charging stations are obtained.

[0091] It is worth mentioning that when the current power level is lower than the preset low power value, it means that you can start charging the electric car to avoid affecting subsequent driving.

[0092] Step S620: Generate navigation route information from the current position to a nearby charging station based on the current position information and the charging position information to instruct the target vehicle to go there.

[0093] It can be seen that the generation of navigation route information makes it easier for car owners to find the location of charging stations.

[0094] In an exemplary embodiment, the vehicle terminal obtains the current power and sends it to the mobile terminal. The mobile terminal obtains the current electricity price and the historical electricity price waveform from the website in real time, and obtains the current power from the vehicle terminal in real time to control the target vehicle to charge. The trigger for starting charging and stopping charging can be automatically triggered by the system, or a trigger button can be set, and the owner can manually trigger it through the trigger button.

[0095] The vehicle-mounted terminal and mobile terminal can be a laptop computer, desktop computer, mobile phone, smart watch, etc.

[0096] It should be understood that the order of execution of the steps in the above embodiment does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0097] Figure 2 It is a block diagram of an electric vehicle charging control device shown in an exemplary embodiment of the present application.

[0098] like Figure 2 As shown, the exemplary electric vehicle charging control device includes:

[0099] The information acquisition module 210 is used to obtain the current electricity price, the historical electricity price waveform and the current power of the target vehicle;

[0100] A first comparison module 220, configured to obtain a first control variable based on the current electricity price and the historical electricity price waveform diagram;

[0101] A second comparison module 230, configured to obtain a second control variable based on the current power level and a preset low power level and a preset high power level;

[0102] The charging control instruction generating module 240 is used to generate a charging control instruction for controlling the charging of the target vehicle according to the first control variable and the second control variable.

[0103] In this exemplary electric vehicle charging control device, not only the impact of the current power level on the charging control process is considered, but also the impact of the current electricity price on the charging cost is considered to achieve low-cost charging.

[0104] In another exemplary embodiment, the first comparison module 220 includes:

[0105] The intermediate value acquisition submodule is used to determine the intermediate value between the peak value and the trough value according to the peak value and the trough value in the historical electricity price waveform diagram.

[0106] A processing submodule is used to compare the current electricity price with the intermediate value to generate the first control variable.

[0107] In another exemplary embodiment, the charging control instruction generating module 240 includes:

[0108] The first sub-processing module is used to generate a charging instruction if the current power level is less than a preset low power value.

[0109] The second sub-processing module is used to generate a charging instruction if the current power level is between a preset low power level and a preset high power level, and the current electricity price is lower than the intermediate value.

[0110] The third sub-processing module is used to generate a stop charging instruction if the current power level is between a preset low power level and a preset high power level, and the current electricity price is higher than the intermediate value.

[0111] The fourth sub-processing module is used to generate a stop charging instruction if the current power level is greater than a preset high power level.

[0112] In an exemplary embodiment, the charging control instruction generating module 240 further includes:

[0113] The information acquisition submodule is used to obtain the current time and the preset departure and return time of the owner of the target vehicle.

[0114] The time difference confirmation submodule is used to compare the current time with the preset departure and return time to determine the time difference between the current time and the preset departure and return time.

[0115] The comparison submodule is used to compare the time difference with a preset difference value to generate a third control variable.

[0116] The instruction generation submodule is used to obtain the charging control instruction according to the first control variable, the second control variable and the third control variable.

[0117] In another exemplary embodiment, the instruction generation submodule includes:

[0118] The first processing unit generates a charging instruction if the current power level is between a preset low power level and a preset high power level, the current electricity price is higher than the middle value, and the time difference is less than a preset difference.

[0119] The second processing unit generates a stop charging instruction if the current power level is between a preset low power level and a preset high power level, the current electricity price is higher than the middle value, and the time difference is greater than a preset difference.

[0120] In another exemplary embodiment, the electric vehicle charging control device further includes:

[0121] The judgment module obtains the current location information of the target vehicle and the charging location information of the nearby charging stations if the current power level is lower than the preset low power value.

[0122] The navigation route generation module generates navigation route information from the current position to a nearby charging station according to the current position information and the charging position information, so as to instruct the target vehicle to go there.

[0123] It should be noted that the electric vehicle charging control device provided in the above embodiment and the electric vehicle charging control method provided in the above embodiment 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 electric vehicle charging control device provided in the above embodiment 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.

[0124] An embodiment of the present application also provides an electronic device, comprising: one or more processors; a storage device for storing one or more programs, when the one or more programs are executed by the one or more processors, the electronic device implements the electric vehicle charging control method provided in the above-mentioned embodiments.

[0125] Figure 3 The structure diagram of the computer system suitable for implementing the electronic device of the embodiment of the present application is shown. It should be noted that: Figure 3 The computer system 1200 of the electronic device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0126] like Figure 3 As shown, the computer system 300 includes a central processing unit (CPU) 301, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 302 or the program loaded from the storage part 308 to the random access memory (RAM) 303, such as executing the method described in the above embodiment. In the RAM 303, various programs and data required for system operation are also stored. The CPU 301, ROM 302 and RAM 303 are connected to each other through a bus 304. An input / output (I / O) interface 305 is also connected to the bus 304.

[0127] The following components are connected to the I / O interface 305: an input section 306 including a keyboard, a mouse, etc.; an output section 307 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker; a storage section 308 including a hard disk, etc.; and a communication section 309 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 309 performs communication processing via a network such as the Internet. A drive 310 is also connected to the I / O interface 305 as needed. A removable medium 311, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 310 as needed so that a computer program read therefrom is installed into the storage section 308 as needed.

[0128] 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 309, and / or installed from a removable medium 311. When the computer program is executed by a central processing unit (CPU) 301, various functions defined in the system of the present application are executed.

[0129] 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 signal medium may include a data signal propagated in a baseband or as part of a carrier wave, wherein a computer-readable computer program is carried. This propagated data signal can take a variety of forms, including but not limited to an electromagnetic signal, an optical signal, or any suitable combination of the above. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate or transmit a program for use by or in conjunction with an instruction execution system, apparatus or device. A computer program contained on a 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.

[0130] 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 from 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.

[0131] 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.

[0132] Another aspect of the present application further provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor of a computer, the computer executes the electric vehicle charging control method as described above. The computer-readable storage medium may be included in the electronic device described in the above embodiment, or may exist independently without being assembled into the electronic device.

[0133] Another aspect of the present application also provides a computer program product or a computer program, which includes a computer instruction stored in a computer-readable storage medium. A processor of a computer device reads the computer instruction from the computer-readable storage medium, and the processor executes the computer instruction, so that the computer device executes the electric vehicle charging control method provided in each of the above embodiments.

[0134] 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 method for controlling charging of an electric vehicle, characterized in that: The method comprises: Obtain the current electricity price, historical electricity price waveform, and current power consumption of the target vehicle; Based on the current electricity price and the historical electricity price waveform diagram, obtaining a first control variable; Based on the current power and a preset low power value and a preset high power value, a second control variable is obtained; generating a charging control instruction for controlling charging of the target vehicle according to the first control variable and the second control variable, wherein the charging control instruction at least includes a charging instruction and a charging stop instruction; in, Comparing the current electricity price with the historical electricity price waveform to generate a first control variable includes: determining an intermediate value between the peak value and the trough value according to the peak value and the trough value in the historical electricity price waveform; Comparing the current electricity price with the intermediate value to obtain the first control variable; The process of generating a charging control instruction for controlling charging of a target vehicle also includes: Get the current time and the target vehicle owner's preset departure and return time; Compare the current time with the preset departure and return time to determine the time difference between the current time and the preset departure and return time; Comparing the time difference with a preset difference value to generate a third control variable; Obtaining the charging control instruction according to the first control variable, the second control variable and the third control variable; Obtaining the charging control instruction according to the first control variable, the second control variable and the third control variable includes: If the current power level is between a preset low power level and a preset high power level, the current electricity price is higher than the middle value, and the time difference is less than a preset difference, a charging instruction is generated; If the current power level is between a preset low power level and a preset high power level, the current electricity price is higher than the middle value, and the time difference is greater than a preset difference, a stop charging instruction is generated.

2. The electric vehicle charging control method according to claim 1, characterized in that: Generating a charging control instruction for controlling charging of a target vehicle according to the first control variable and the second control variable, including: If the current power level is less than the preset low power value, a charging instruction is generated; If the current power level is between a preset low power level and a preset high power level, and the current electricity price is lower than the intermediate value, a charging instruction is generated; If the current power level is between a preset low power level and a preset high power level, and the current electricity price is higher than the intermediate value, a stop charging instruction is generated; If the current power level is greater than the preset high power level, a stop charging instruction is generated.

3. The electric vehicle charging control method according to claim 1 or 2, characterized in that: After obtaining the second control variable based on the current power level and the preset low power level and the preset high power level, the method further includes: If the current power level is lower than the preset low power level, obtaining the current location information of the target vehicle and the charging location information of the nearby charging stations; Navigation route information from the current position to a nearby charging station is generated based on the current position information and the charging position information to instruct the target vehicle to proceed thereto.

4. An electric vehicle charging control device, characterized in that: The device comprises: An information acquisition module is used to obtain the current electricity price, the historical electricity price waveform, and the current power of the target vehicle; A first comparison module, configured to obtain a first control variable based on the current electricity price and the historical electricity price waveform diagram; A second comparison module, configured to obtain a second control variable based on the current power level and a preset low power level and a preset high power level; A charging control instruction generating module, used to generate a charging control instruction for controlling charging of a target vehicle according to the first control variable and the second control variable, wherein the charging control instruction at least includes a charging instruction and a charging stop instruction; in, Comparing the current electricity price with the historical electricity price waveform to generate a first control variable includes: determining an intermediate value between the peak value and the trough value according to the peak value and the trough value in the historical electricity price waveform; The process of comparing the current electricity price with the intermediate value to obtain the first control variable; and generating a charging control instruction for controlling the charging of the target vehicle further includes: Get the current time and the target vehicle owner's preset departure and return time; Compare the current time with the preset departure and return time to determine the time difference between the current time and the preset departure and return time; Comparing the time difference with a preset difference value to generate a third control variable; Obtaining the charging control instruction according to the first control variable, the second control variable and the third control variable; Obtaining the charging control instruction according to the first control variable, the second control variable and the third control variable includes: If the current power level is between a preset low power level and a preset high power level, the current electricity price is higher than the middle value, and the time difference is less than a preset difference, a charging instruction is generated; If the current power level is between a preset low power level and a preset high power level, the current electricity price is higher than the middle value, and the time difference is greater than a preset difference, a stop charging instruction is generated.

5. An electronic device, characterized in that: The electronic device comprises: one or more processors; A storage device for storing one or more programs, when the one or more programs are executed by the one or more processors, enables the electronic device to implement the electric vehicle charging control method as described in any one of claims 1 to 3.

6. A computer-readable storage medium, characterized in that: A computer program is stored thereon, and when the computer program is executed by a processor of a computer, the computer is caused to execute the electric vehicle charging control method according to any one of claims 1 to 3.

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