V2g charging / discharging system and control method and device therefor, and medium

Abstract

A V2G charging / discharging system and a control method and device therefor, and a computer readable storage medium. The control method comprises: if a power grid is at peak electricity consumption, determining a first-type electric vehicle capable of feeding energy back to the power grid within a preset distance range of a V2G charging / discharging system, and a first energy feedback income from the first-type electric vehicle feeding energy back to the power grid; sending the first energy feedback income to the first-type electric vehicle; and upon detection that a second-type electric vehicle that sends information indicative of feeding energy back to the power grid in the first-type electric vehicle is connected to a V2G charging / discharging device, controlling the V2G charging / discharging device to feed energy back to the power grid. In this way, an electric vehicle capable of feeding energy back to a power grid can be automatically determined, and a corresponding energy feedback income is generated, so as to conveniently and quickly guide a vehicle owner to make a decision, thereby increasing the probability of the vehicle owner authorizing the electric vehicle to feed energy back to the power grid, achieving high vehicle owner participation, improving the utilization of the V2G charging / discharging system, and then effectively adjusting power grid load fluctuation.

Description

V2G charging and discharging system and control method, device and medium thereof

[0001] This application claims priority to Chinese patent application No. 202311541153.2 filed on November 17, 2023, entitled “V2G charging and discharging system and its control method, equipment and medium”. The entire contents of the above Chinese patent application are incorporated into this application by reference. Technical Field

[0002] The present application relates to the field of V2G charging and discharging technology, and specifically provides a V2G charging and discharging system and a control method, device, and medium thereof. Background Art

[0003] With the rapid increase in the number of electric vehicles, the charging process will have a certain impact on the power grid. Introducing vehicle-to-grid (V2G) technology into the power grid, which allows the batteries of large numbers of electric vehicles to be used as energy storage, thereby reducing the impact on the power grid, is a key component of smart grid technology. When the grid load is too high, the energy stored in the electric vehicles is fed into the grid through the V2G charging and discharging system. When the grid load is low, the grid charges the energy stored in the electric vehicles through the V2G charging and discharging system, avoiding waste. This achieves a two-way interaction between electric vehicles and the power grid. In this way, electric vehicle users can buy electricity from the grid when electricity prices are low and sell electricity to the grid when electricity prices are high, thereby generating certain profits.

[0004] However, most electric vehicle owners need to take the initiative to understand the operating information of the power grid, the usage demand information of their own electric vehicles, the benefits after feeding energy into the grid, etc., to decide whether to feed energy into the grid. In this way, for some car owners, they will not use their electric vehicles to interact with the power grid, and the user participation rate is low, resulting in low utilization rate of the V2G charging and discharging system, and thus poor regulation effect on power grid load fluctuations.

[0005] Summary of the Invention

[0006] In order to overcome the above-mentioned defects, the present application is proposed to provide a V2G charging and discharging system and its control method, device and medium that solve or at least partially solve the technical problem of low utilization rate of V2G charging and discharging system and poor regulation effect of grid load fluctuation.

[0007] In a first aspect, the present application provides a control method for a V2G charging and discharging system, wherein the V2G charging and discharging system includes at least a plurality of V2G charging and discharging devices; the V2G charging and discharging devices are used to connect to an electric vehicle and a power grid in a power supply area, and the electric vehicle and the power grid are charged or discharged through the V2G charging and discharging devices. The control method includes:

[0008] If the power grid is at a peak power consumption, determining at least one first-category electric vehicle; the first-category electric vehicle is located within a preset distance range of the V2G charging and discharging system, and the first-category electric vehicle is an electric vehicle capable of feeding energy to the power grid;

[0009] Determining a first energy feeding benefit of the first type of electric vehicle feeding energy to the power grid;

[0010] Sending the first energy feeding income to the first type of electric vehicle, so that the first type of electric vehicle determines whether to feed energy to the power grid based on the first energy feeding income;

[0011] If it is detected that at least one second-category electric vehicle is connected to the V2G charging and discharging device, the V2G charging and discharging device is controlled to feed energy to the power grid; wherein, the second-category electric vehicle is an electric vehicle among the first-category electric vehicles that is determined to feed energy to the power grid and sends information on feeding energy to the power grid.

[0012] In a second aspect, the present application provides a control device for a V2G charging and discharging system, the control device for the V2G charging and discharging system comprising a processor and a storage device, the storage device being adapted to store a plurality of program codes, the program codes being adapted to be loaded and run by the processor to execute any one of the above-described control methods for the V2G charging and discharging system.

[0013] In a third aspect, a V2G charging and discharging system is provided. The V2G charging and discharging system may include the control device of the V2G charging and discharging system as described above.

[0014] In a fourth aspect, a computer-readable storage medium is provided, which stores a plurality of program codes, wherein the program codes are suitable for being loaded and run by a processor to execute any one of the above-mentioned control methods for the V2G charging and discharging system.

[0015] The above one or more technical solutions of this application have at least one or more of the following beneficial effects:

[0016] In the technical solution of the present application, if the power supply area where the V2G charging and discharging system is located is at a peak power consumption, multiple first-class electric vehicles capable of feeding energy to the power grid within a preset distance range of the V2G charging and discharging system are obtained, and after determining the first energy feeding benefit of the first-class electric vehicle feeding energy to the power grid, the first-class electric vehicle is sent to the first-class electric vehicle, so that the first-class electric vehicle determines whether to feed energy to the power grid based on the first energy feeding benefit. If at least one second-class electric vehicle among the first-class electric vehicles that sends information on feeding energy to the power grid is detected to be connected to the V2G charging and discharging device, the V2G charging and discharging device can be controlled to feed energy to the power grid corresponding to the power supply area. In this way, the electric vehicles capable of feeding energy to the power grid are automatically determined, and the corresponding energy feeding benefits are generated, so as to guide the car owner to make a decision conveniently and quickly, thereby increasing the probability of the car owner authorizing the electric vehicle to feed energy to the power grid, making the car owner participation rate higher, thereby improving the utilization rate of the V2G charging and discharging system, and thus being able to effectively regulate the power grid load fluctuation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The disclosure of this application will be more easily understood with reference to the accompanying drawings. Those skilled in the art will readily appreciate that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this application. Furthermore, similar numbers in the figures represent similar components, where:

[0018] FIG1 is a flow chart showing a process of charging an electric vehicle from a power grid via a V2G charging and discharging device;

[0019] FIG2 is a flow chart showing a process of an electric vehicle discharging to a power grid through a V2G charging and discharging device;

[0020] FIG3 is a main structural block diagram of a V2G charging and discharging system according to an embodiment of the present application;

[0021] FIG4 is a flow chart showing the main steps of a method for controlling a V2G charging and discharging system according to an embodiment of the present application;

[0022] FIG5 is a flowchart of the implementation of step 401;

[0023] FIG6 is a main structural block diagram of a control device of a V2G charging and discharging system according to an embodiment of the present application. DETAILED DESCRIPTION

[0024] Some embodiments of the present application are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present application and are not intended to limit the scope of protection of the present application.

[0025] In the description of this application, "module" and "processor" may include hardware, software, or a combination of both. A module may include hardware circuitry, various suitable sensors, communication ports, and memory. It may also include software components, such as program code, or a combination of software and hardware. A processor may be a central processing unit, a microprocessor, an image processor, a digital signal processor, or any other suitable processor. A processor has data and / or signal processing capabilities. A processor may be implemented in software, hardware, or a combination of both. Non-transitory computer-readable storage media include any suitable medium capable of storing program code, such as magnetic disks, hard disks, optical disks, flash memory, read-only memory, random access memory, etc. The term "A and / or B" refers to all possible combinations of A and B, such as only A, only B, or both A and B. The terms "at least one of A or B" or "at least one of A and B" have similar meanings to "A and / or B" and may include only A, only B, or both A and B. The singular forms "a" and "the" may also include the plural forms.

[0026] With the rapid increase in the number of electric vehicles (EVs), the charging process will have a certain impact on the power grid. The introduction of vehicle-to-grid (V2G) technology into the grid, which utilizes the batteries of large numbers of EVs as energy storage and thus reduces the impact on the grid, is a key component of smart grid technology. When the grid load is too high, the stored energy of EVs is fed into the grid via the V2G charging and discharging system. When the grid load is low, the V2G charging and discharging system charges the stored energy of EVs, avoiding waste. This enables two-way interaction between EVs and the grid.

[0027] 1 is a flow chart of the process of the power grid charging an electric vehicle through V2G charging and discharging equipment. As shown in Figure 2, after the user plugs the electric vehicle into the V2G charging and discharging device, a plug-in test is performed. The user scans the QR code of the V2G charging and discharging device through the APP, and then confirms to start charging on the APP. The APP sends a charging request to the cloud; the cloud sends a start charging command to the data management chip of the V2G charging and discharging device. The data management chip feedbacks the command receipt information to the cloud and performs command verification. If the verification passes, it sends a start charging command to the charge and discharge control chip. The charge and discharge control chip verifies the electronic lock, insulation detection, discharges, pre-charges, outputs current, charges the electric vehicle, and sends a start result reply to the data management chip. The data management chip then sends the start result reply to the cloud. The charge and discharge control chip obtains the charging status and service data, and uploads them to the cloud through the data management chip. The cloud updates the charging status and data on the APP; when the user needs to stop charging, the APP sends a stop charging request to the cloud. The cloud sends a stop charging command to the data management chip. The data management chip feedbacks the command receipt information to the cloud and performs command verification. If the verification passes, it sends a stop charging command to the charge and discharge control chip. The charge and discharge control chip executes the stop charging command. The data management chip sends a stop result reply, which is then sent to the cloud. The charge and discharge control chip summarizes the service and uploads it to the cloud through the data management chip. The cloud pushes the service summary to the APP.

[0028] Figure 2 is a flow chart of the process of an electric vehicle discharging to the power grid through a V2G charging and discharging device. As shown in Figure 2, after the user plugs the electric vehicle into the V2G charging and discharging device, the vehicle performs a gun plug detection, the user scans the QR code of the V2G charging and discharging device through the APP, and then confirms to start discharging on the APP. The APP sends a discharge request to the cloud; the cloud sends a start discharge command to the data management chip of the V2G charging and discharging device, and the data management chip feeds back the command receipt information to the cloud and performs command verification. If the verification passes, it sends a start discharge command to the charging and discharging control chip, which performs electronic lock verification, insulation detection, discharge, pre-charge, and output current. The electric vehicle discharges to the power grid and sends a start result reply to the data management chip, which then sends a start result reply to the cloud. The charge and discharge control chip obtains the discharge status and service data, and uploads them to the cloud through the data management chip. The cloud updates the discharge status, data, etc. of the APP. When the user needs to stop discharging, the APP sends a stop discharge request to the cloud. The cloud sends a stop discharge command to the data management chip. The data management chip feeds back the command receipt information to the cloud and performs command verification. If the verification passes, it sends a stop discharge command to the charge and discharge control chip. The charge and discharge control chip executes the stop discharge command and sends a stop result reply to the data management chip. The data management chip then sends a stop result reply to the cloud. The charge and discharge control chip summarizes the service and uploads it to the cloud through the data management chip. The cloud pushes the service summary to the APP.

[0029] However, during the discharge process between electric vehicles and the power grid through the V2G charging and discharging system, most electric vehicle owners need to actively understand the operation information of the power grid, the usage demand information of their own electric vehicles, the benefits after feeding energy to the power grid, etc., to decide whether to feed energy to the power grid. In this way, for some car owners, they will not use their electric vehicles to interact with the power grid, and the user participation rate is low, resulting in low utilization rate of the V2G charging and discharging system, and thus poor regulation effect on power grid load fluctuations.

[0030] Therefore, in order to solve the above technical problems, this application provides the following technical solutions:

[0031] Referring to Figure 3, Figure 3 is a block diagram of the main structure of a V2G charging and discharging system according to one embodiment of the present application. As shown in Figure 3, the V2G charging and discharging system in this embodiment of the present application may include multiple V2G charging and discharging devices. The V2G charging and discharging devices are used to connect to electric vehicles and the power grid in the power supply area. The electric vehicles and the power grid are charged or discharged through the V2G charging and discharging devices.

[0032] In a specific implementation process, each V2G charging and discharging device may include a communication module, a charging and discharging control module, an auxiliary power supply module, a human-computer interaction module, a bidirectional metering module, a bidirectional power conversion module, a DC metering module, a protection module, a DC switch, a charging gun, a background management platform, a terminal, etc.

[0033] In a specific implementation, the communication module can be connected to the backend management platform via wireless communication methods such as 2G, 3G, 4G, and 5G. The communication module is also connected to the bidirectional metering module and the charge-discharge control module. It primarily collects bidirectional metering information, including output voltage, current, and metering information, uploads and downloads information and controls, and transmits relevant instructions to the charge-discharge control module.

[0034] The charge and discharge control module mainly completes charging control, discharge control, insulation detection, and control of bidirectional power modules.

[0035] The auxiliary power supply module can provide power to the bidirectional power conversion module (the connection relationship is no longer shown in the figure), the communication module, and the charge and discharge control module.

[0036] The human-computer interaction module can provide a display for the device, indicating charging, discharging, standby, fault and other status.

[0037] The bidirectional power conversion module can complete AC-DC and DC-AC power conversion. It mainly consists of two parts: power factor correction (PFC) and DC power conversion (DCDC), realizing the mutual conversion between AC and DC.

[0038] The bidirectional metering module can complete bidirectional voltage, current, power measurement, etc.

[0039] The DC metering module can measure the voltage, current, and power on the DC side.

[0040] The protection module can provide protection against overcurrent, overpower, etc.

[0041] DC switches are used to control DC input or output.

[0042] The charging gun connects and interacts with the electric vehicle.

[0043] The background management platform can save data information and calculate some power grid dispatching algorithms.

[0044] Terminals such as mobile phones can perform remote charging and discharging control and obtain order information.

[0045] In a specific implementation process, the wireless charging control module, terminal, background management platform, etc. can all serve as control devices of the V2G charging and discharging system and can realize the control of the V2G charging and discharging system. The specific control process can be found in the following record:

[0046] Referring to FIG4 , FIG4 is a flow chart illustrating the main steps of a method for controlling a V2G charging and discharging system according to an embodiment of the present application. As shown in FIG4 , the method for controlling a V2G charging and discharging system in the embodiment of the present application mainly includes the following steps 401 to 404 .

[0047] Step 401: If the power grid in the power supply area where the V2G charging and discharging system is located is at a peak power consumption, determine at least one first-category electric vehicle;

[0048] In a specific implementation process, the permitted state of the power grid in the power supply area where the V2G charging and discharging system is located can be monitored in real time to determine whether the power grid is at a peak power consumption or a valley power consumption. If the power grid in the power supply area where the V2G charging and discharging system is located is at a peak power consumption, in order to adjust the power grid, at least one first-class electric vehicle can be determined. The first-class electric vehicle is located within the preset distance range of the V2G charging and discharging system, and the first-class electric vehicle is an electric vehicle that can feed energy to the power grid. That is to say, for some electric vehicles, they can only be considered as first-class electric vehicles when they are close to a certain V2G charging and discharging system and have enough power to feed energy to the power grid. The first-class electric vehicle can be an electric vehicle parked somewhere within the preset distance range of the V2G charging and discharging system, or it can be an electric vehicle traveling within the preset distance range of the V2G charging and discharging system. This embodiment does not impose specific restrictions.

[0049] In a specific implementation process, step 401 can be implemented through the process shown in Figure 5. Figure 5 is a flowchart of the implementation of step 401.

[0050] Step 4011: Obtain vehicle demand information and battery status information of multiple third-category electric vehicles within the preset distance range of the V2G charging and discharging system;

[0051] In a specific implementation process, multiple third-category electric vehicles within the preset distance range of the V2G charging and discharging system can be obtained, and the vehicle demand information and battery status information of the third-category electric vehicles can be further obtained. Among them, the third-category electric vehicles are electric vehicles that are not feeding energy to the power grid at the current moment. The vehicle demand information of the third-category electric vehicles may include travel itinerary (the journey between the departure place and the destination) and / or travel time (the time between the departure time and the arrival time at the destination). The battery status information may include the remaining battery power and / or the battery health.

[0052] In a specific implementation, the electric vehicles within the preset distance range of the V2G charging and discharging system may be in different usage states. For example, some electric vehicles are charging, some are discharging to the grid, and some are neither charging nor discharging. Here, both the charging electric vehicles and the non-charging electric vehicles can be considered as electric vehicles not currently feeding energy to the grid. The non-charging electric vehicles can also be parked somewhere within the preset distance range of the V2G charging and discharging system, or can be traveling within the preset distance range of the V2G charging and discharging system. This embodiment does not impose any specific limitations.

[0053] In a specific implementation process, the usage demand information of the third type of electric vehicles can be obtained based on the usage habits of different electric vehicles, the travel information obtained by third-party software, the travel information input by the owner, etc.

[0054] Step 4012: Select a vehicle from the third category of electric vehicles as the first category of electric vehicles based on the vehicle usage demand information and battery status information of the third category of electric vehicles.

[0055] In a specific implementation process, the required power of the third category electric vehicle can be determined based on the travel range, travel time and / or remaining power of the third category electric vehicle. After obtaining the required power of the third category electric vehicle, the allowable discharge power of the third category electric vehicle can be determined based on the remaining power of the third category electric vehicle and the required power of the third category electric vehicle. And / or, the allowable discharge power of the third category electric vehicle can be determined based on the health of the third category electric vehicle and the required power of the third category electric vehicle; then the third category electric vehicle corresponding to the allowable discharge power greater than the preset discharge amount can be selected as the first category electric vehicle.

[0056] Specifically, when determining the allowable discharge capacity of the third-category electric vehicle, if the battery status information only includes the remaining battery capacity, the difference between the remaining capacity of the third-category electric vehicle and the required capacity of the third-category electric vehicle can be used as the allowable discharge capacity of the third-category electric vehicle. If the battery status information only includes the battery health, the first estimated remaining capacity of the third-category electric vehicle can be estimated by combining the distance traveled by the electric vehicle, the total capacity, and the battery health, and then the difference between the first estimated remaining capacity of the third-category electric vehicle and the required capacity of the third-category electric vehicle is obtained as the allowable discharge capacity of the third-category electric vehicle. If the battery status information includes both the remaining battery capacity and the battery health, the second estimated remaining capacity of the third-category electric vehicle can be estimated using the remaining battery capacity and the battery health, and then the difference between the second estimated remaining capacity of the third-category electric vehicle and the required capacity of the third-category electric vehicle is obtained as the allowable discharge capacity of the third-category electric vehicle.

[0057] Step 402: Determine a first energy feeding benefit of the first type of electric vehicle feeding energy to the power grid;

[0058] In a specific implementation, the first energy feeding revenue can be generated based on the participation of the first type of electric vehicles in feeding energy to the power grid, the charging electricity price of the first type of electric vehicles, and the real-time electricity price of the power grid. The first energy feeding revenue can include the unit electricity price revenue and the total electricity price revenue when the electric vehicles are discharged through the V2G charging and discharging equipment.

[0059] Specifically, although car owners can obtain certain benefits when using electric vehicles to feed energy to the grid through the V2G charging and discharging system, considering the impact of factors such as the battery loss of electric vehicles and the time the owners use their vehicles, different car owners have different willingness to use the V2G charging and discharging system to feed energy to the grid. Some car owners may frequently participate in feeding energy to the grid, while others rarely participate. Therefore, in this embodiment, different reward policies can be set for different car owners. The specific principle is as follows: higher benefits are set for car owners with higher participation, and lower benefits are set for car owners with lower participation. Based on this principle, considering the real-time electricity price of the grid and the charging electricity price of the first type of electric vehicles, a first energy feeding benefit is generated that is beneficial for each user to obtain the maximum benefit. Among them, the charging electricity price of the first type of electric vehicle is the charging electricity price of the first type of electric vehicle when it was last charged before the current moment.

[0060] In a specific implementation process, the purpose of each V2G charging and discharging system is to have a certain profit, and different V2G charging and discharging systems have different operating incomes, some more and some less. Therefore, in order to balance the income of car owners and the operating income of the V2G charging and discharging system, different reward policies can be set for different car owners according to the following principles. The specific principles are as follows: Under the minimum operating income requirement of each V2G charging and discharging system, higher income is set for car owners with higher participation, and lower income is set for car owners with lower participation. Therefore, the first energy feeding income can be generated according to the participation of the first type of electric vehicles in feeding energy to the power grid, the charging electricity price of the first type of electric vehicles, the real-time electricity price of the power grid and the operating income of the V2G charging and discharging system. Among them, the total profit of the V2G charging and discharging system can be obtained as the operating income based on the charging profit, discharge cost, maintenance cost, etc. of V2G in a certain time period before the current moment (one week, one month, etc.).

[0061] Step 403: Send the first energy feeding income to the first type of electric vehicle, so that the first type of electric vehicle determines whether to feed energy to the power grid based on the first energy feeding income;

[0062] In a specific implementation, the first energy feeding benefit can be sent to the first type of electric vehicle. In this way, the user can understand the benefits they can obtain by participating in this energy feeding into the grid. If the expected benefits are achieved, the user can feed energy into the grid and input an instruction to feed energy into the grid to the first type of electric vehicle. The first type of electric vehicle determines to feed energy into the grid and sends information about feeding energy into the grid. Alternatively, a benefit threshold can be set in the first type of electric vehicle. If the first energy feeding benefit is greater than the benefit threshold, the user can automatically determine to feed energy into the grid and send information about feeding energy into the grid.

[0063] Step 404: If it is detected that at least one second-category electric vehicle is connected to the V2G charging and discharging device, control the V2G charging and discharging device to feed energy to the power grid;

[0064] In a specific implementation process, an electric vehicle among the first category of electric vehicles that is determined to feed energy to the power grid and sends information on feeding energy to the power grid can be used as a second category of electric vehicle. The second category of electric vehicle may or may not have been connected to the V2G charging and discharging device. However, in either case, as long as it is detected that the second category of electric vehicle is connected to the V2G charging and discharging device, the V2G charging and discharging device can be controlled to feed energy to the power grid.

[0065] The control method of the V2G charging and discharging system of this embodiment is as follows: if the power supply area where the V2G charging and discharging system is located is at peak power consumption, multiple first-class electric vehicles capable of feeding energy to the power grid within a preset distance range of the V2G charging and discharging system are obtained, and a first energy feeding benefit of the first-class electric vehicles feeding energy to the power grid is determined. The first-class electric vehicles are then sent to the first-class electric vehicles, so that the first-class electric vehicles determine whether to feed energy to the power grid based on the first energy feeding benefit. If at least one second-class electric vehicle among the first-class electric vehicles that sends information about feeding energy to the power grid is detected to be connected to the V2G charging and discharging device, the V2G charging and discharging device can be controlled to feed energy to the power grid corresponding to the power supply area. In this way, the electric vehicles capable of feeding energy to the power grid are automatically determined and the corresponding energy feeding benefits are generated, so as to conveniently and quickly guide the vehicle owner to make a decision, increase the probability of the vehicle owner authorizing the electric vehicle to feed energy to the power grid, and achieve a high vehicle owner participation rate, thereby improving the utilization rate of the V2G charging and discharging system and effectively regulating power grid load fluctuations.

[0066] In a specific implementation, based on the above example, after controlling the V2G charging and discharging device to feed energy to the power grid, it is further possible to detect whether the number of connected second-category electric vehicles is less than a preset number, and whether the output power of the V2G charging and discharging system is less than the power demand of the power-consuming load. If it is detected that the number of second-category electric vehicles is less than the preset number, and the output power of the V2G charging and discharging system is less than the power demand of the power-consuming load, it indicates that the output power of the V2G charging and discharging system cannot meet the power demand of the power-consuming load, and some first-category electric vehicles capable of feeding energy to the power grid are still idle. The reason why some first-category electric vehicles capable of feeding energy to the power grid are still idle may be that the owners feel that the benefits are insufficient. In this case, a second energy feeding benefit can be obtained based on the first energy feeding benefit and a preset increase coefficient, and the second energy feeding benefit can be sent to at least one fourth-category electric vehicle, so that the fourth-category electric vehicle determines whether to feed energy to the power grid based on the second energy feeding benefit; wherein the fourth-category electric vehicle is an electric vehicle among the first-category electric vehicles that determines not to feed energy to the power grid and sends information that it will not feed energy to the power grid. In this way, by further improving the energy feedback benefits, some car owners may change their minds and use electric vehicles to feed energy to the grid through the V2G charging and discharging system.

[0067] Furthermore, in the above embodiment, the following operations may be performed before step 404 of “if it is detected that at least one second-category electric vehicle is connected to the V2G charging and discharging device, controlling the V2G charging and discharging device to feed energy to the power grid”.

[0068] (1) when receiving the power grid energy feedback information sent by any first-category electric vehicle, treating any first-category electric vehicle as the corresponding any second-category electric vehicle;

[0069] (2) selecting any idle V2G charging and discharging device from the V2G charging and discharging system as the target V2G charging and discharging device corresponding to any second-category electric vehicle, and associating and locking the target V2G charging and discharging device with any second-category electric vehicle, so as to reserve a target V2G charging and discharging device for any second-category electric vehicle, thereby preventing any second-category electric vehicle from having no available V2G charging and discharging device after arriving at the area where the V2G charging and discharging system is located.

[0070] (3) If it is detected that any of the second-category electric vehicles has not been connected to the target V2G charging and discharging equipment within the set time, the target V2G charging and discharging equipment is released. This can prevent the owner from not going to the target V2G charging and discharging equipment for a long time due to a change of plan, making the target V2G charging and discharging equipment unusable by other electric vehicles.

[0071] In a specific implementation process, the predicted time for any second-category electric vehicle to reach the target V2G charging and discharging device can be determined as the set time based on the location of the owner of any second-category electric vehicle and the location of the target V2G charging and discharging device; and / or, the predicted time for any second-category electric vehicle to reach the target V2G charging and discharging device can be determined as the set time based on the location of the owner of any second-category electric vehicle and the location of the target V2G charging and discharging device.

[0072] Specifically, for the second type of electric vehicle, it may be parked in a parking lot. The predicted duration can be determined only based on the owner's location and the location of the target V2G charging and discharging equipment, or the predicted duration can be determined only based on the location of the second type of electric vehicle and the location of the target V2G charging and discharging equipment. However, in order to accurately obtain the prediction of the second type of electric vehicle arriving at the target V2G charging and discharging equipment, the owner is required to reach the electric vehicle location first, and then the electric vehicle reaches the target V2G charging and discharging equipment. Therefore, the owner's location and the location of the second type of electric vehicle can be obtained at the same time, and then combined with the location of the target V2G charging and discharging equipment, the predicted duration of the second type of electric vehicle arriving at the target V2G charging and discharging equipment is calculated as the set duration.

[0073] For the second type of electric vehicle, it may be traveling on the way to the target V2G charging and discharging equipment. At this time, the position of the owner and the vehicle needs to be the same. The predicted duration can be determined only based on the position of the owner and the position of the target V2G charging and discharging equipment, or the predicted duration can be determined only based on the position of the second type of electric vehicle and the position of the target V2G charging and discharging equipment.

[0074] It should be pointed out that although the various steps in the above embodiments are described in a specific order, those skilled in the art will understand that in order to achieve the effect of the present application, different steps do not have to be performed in such an order. They can be performed simultaneously (in parallel) or in other orders. These changes are within the scope of protection of the present application.

[0075] It will be understood by those skilled in the art that all or part of the processes in the method for implementing the above embodiment of the present application can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by a processor, it can implement the steps of each of the above method embodiments. The computer program includes computer program code, which can be in source code form, object code form, executable file or some intermediate form. The computer-readable storage medium can include: any entity or device, medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory, random access memory, electric carrier signal, telecommunication signal and software distribution medium that can carry the computer program code. It should be noted that the content contained in the computer-readable storage medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable storage media do not include electric carrier signals and telecommunication signals.

[0076] Furthermore, the present application also provides a control device for a V2G charging and discharging system.

[0077] 6 , which is a block diagram of the main structure of a control device for a V2G charging and discharging system according to an embodiment of the present application. As shown in FIG6 , the control device for the V2G charging and discharging system in the embodiment of the present application may include a processor 61 and a storage device 62 .

[0078] The storage device 62 may be configured to store a program for executing the V2G charging and discharging system control method according to the above-described method embodiment, and the processor 61 may be configured to execute the program stored in the storage device 62, including but not limited to a program for executing the V2G charging and discharging system control method according to the above-described method embodiment. For ease of illustration, only the portions relevant to the present embodiment are shown. For specific technical details not disclosed, please refer to the method section of the present embodiment. The control device of the V2G charging and discharging system may be a control device formed by various electronic devices.

[0079] In a specific implementation, the number of storage devices 62 and processors 61 can be multiple. The program that executes the V2G charge-discharge system control method of the above-mentioned method embodiment can be divided into multiple subroutines, each of which can be loaded and executed by the processor 61 to execute different steps of the V2G charge-discharge system control method of the above-mentioned method embodiment. Specifically, each subroutine can be stored in a different storage device 62, and each processor 61 can be configured to execute the programs in one or more storage devices 62 to jointly implement the V2G charge-discharge system control method of the above-mentioned method embodiment. That is, each processor 61 executes different steps of the V2G charge-discharge system control method of the above-mentioned method embodiment to jointly implement the V2G charge-discharge system control method of the above-mentioned method embodiment.

[0080] The multiple processors 61 may be processors deployed on the same device. For example, the device may be a high-performance device composed of multiple processors, and the multiple processors 61 may be processors configured on the high-performance device. Furthermore, the multiple processors 61 may be processors deployed on different devices. For example, the device may be a server cluster, and the multiple processors 61 may be processors on different servers in the server cluster.

[0081] Furthermore, the present application also provides a driving device, which includes the control device of the V2G charging and discharging system of the above embodiment. The driving device may specifically include an autonomous driving vehicle, an unmanned delivery robot, an unmanned aircraft, etc.

[0082] Furthermore, the present application also provides a computer-readable storage medium. In a computer-readable storage medium embodiment according to the present application, the computer-readable storage medium can be configured to store a program for executing the control method of the V2G charging and discharging system of the above-mentioned method embodiment. The program can be loaded and run by the processor to implement the control method of the above-mentioned V2G charging and discharging system. For ease of explanation, only the parts related to the embodiment of the present application are shown. For specific technical details not disclosed, please refer to the method part of the embodiment of the present application. The computer-readable storage medium can be a storage device formed by various electronic devices. Optionally, the computer-readable storage medium in the embodiment of the present application is a non-transitory computer-readable storage medium.

[0083] Furthermore, it should be understood that since the configuration of each module is merely for the purpose of illustrating the functional units of the apparatus of the present application, the physical devices corresponding to these modules may be the processor itself, or a portion of the software in the processor, a portion of the hardware, or a combination of software and hardware. Therefore, the number of modules in the figure is merely illustrative.

[0084] Those skilled in the art will appreciate that the various modules in the device can be adaptively split or merged. Such splitting or merging of specific modules will not cause the technical solution to deviate from the principles of this application. Therefore, the technical solutions after splitting or merging will fall within the scope of protection of this application.

[0085] It should be noted that the relevant user personal information that may be involved in the various embodiments of this application is strictly in accordance with the requirements of laws and regulations, follows the principles of legality, legitimacy and necessity, and is based on the reasonable purposes of business scenarios to process personal information that users actively provide during the use of products / services or generated due to the use of products / services, as well as personal information obtained with the user's authorization.

[0086] The user personal information processed by this application will vary depending on the specific product / service scenario and must be based on the specific scenario in which the user uses the product / service. This may involve the user's account information, device information, driving information, vehicle information, or other related information. This application will treat the user's personal information and its processing with a high degree of diligence.

[0087] This application attaches great importance to the security of user personal information and has taken reasonable and feasible security protection measures that comply with industry standards to protect user information and prevent personal information from being accessed, disclosed, used, modified, damaged or lost without authorization.

[0088] Thus far, the technical solutions of the present application have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of the present application is obviously not limited to these specific embodiments. Without departing from the principles of the present application, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present application.

Claims

1. A control method for a V2G charging and discharging system, characterized in that: The V2G charging and discharging system includes at least a plurality of V2G charging and discharging devices; the V2G charging and discharging devices are used to connect to the electric vehicle and the power grid in the power supply area, and the electric vehicle and the power grid are charged or discharged through the V2G charging and discharging devices. The control method includes: If the power grid is at a peak power consumption, determining at least one first-category electric vehicle; the first-category electric vehicle is located within a preset distance range of the V2G charging and discharging system, and the first-category electric vehicle is an electric vehicle capable of feeding energy to the power grid; Determine a first energy feeding benefit of the first type of electric vehicle feeding energy to the power grid; Sending the first energy feeding income to the first type of electric vehicle, so that the first type of electric vehicle determines whether to feed energy to the power grid based on the first energy feeding income; If it is detected that at least one second-category electric vehicle is connected to the V2G charging and discharging device, the V2G charging and discharging device is controlled to feed energy to the power grid; wherein the second-category electric vehicle is an electric vehicle among the first-category electric vehicles that is determined to feed energy to the power grid and sends information on feeding energy to the power grid.

2. The control method of the V2G charging and discharging system according to claim 1, characterized in that: The determining of at least one first type electric vehicle comprises Obtaining vehicle demand information and battery status information of a plurality of third-category electric vehicles within the preset distance range of the V2G charging and discharging system; the third-category electric vehicles are electric vehicles that are not feeding energy to the power grid at the current moment; According to the vehicle demand information and the battery status information, a vehicle is selected from the third category of electric vehicles as the first category of electric vehicles.

3. The control method of the V2G charging and discharging system according to claim 2, characterized in that: The vehicle demand information includes at least one of a travel itinerary and / or a travel time; the battery status information includes a remaining battery charge and / or a battery health; The selecting a vehicle from the third category of electric vehicles as the first category of electric vehicles according to the vehicle demand information and the battery status information includes: Determining the required power of the third type of electric vehicle according to the travel itinerary and / or travel time of the third type of electric vehicle; Determine the allowable discharge capacity of the third-category electric vehicle according to the remaining capacity of the third-category electric vehicle and the required capacity of the third-category electric vehicle; and / or determine the allowable discharge capacity of the third-category electric vehicle according to the health of the third-category electric vehicle and the required capacity of the third-category electric vehicle; A third type of electric vehicle corresponding to an allowable discharge amount greater than a preset discharge amount is selected as the first type of electric vehicle.

4. The control method of the V2G charging and discharging system according to claim 1, characterized in that: The determining of a first energy feeding benefit of the first type of electric vehicle feeding energy to the power grid comprises: The first energy feeding income is generated based at least on the participation degree of the first type of electric vehicles in feeding energy to the power grid, the charging electricity price of the first type of electric vehicles and the real-time electricity price of the power grid.

5. The control method of the V2G charging and discharging system according to claim 4, characterized in that: The generating the first energy feeding income according to at least the participation degree of the first type of electric vehicle in feeding energy to the power grid, the charging electricity price of the first type of electric vehicle and the real-time electricity price of the power grid comprises: The first energy feeding income is generated according to the participation degree of the first type of electric vehicles in feeding energy to the power grid, the charging electricity price of the first type of electric vehicles, the real-time electricity price of the power grid and the operating income of the V2G charging and discharging system.

6. The control method of the V2G charging and discharging system according to claim 1, characterized in that: After controlling the V2G charging and discharging device to feed energy to the power grid, the method further includes: If it is detected that the number of the second-category electric vehicles is less than a preset number, and the output power of the V2G charging and discharging system is less than the required power of the load at the power consumption end, a second energy feeding benefit is sent to at least one fourth-category electric vehicle, so that the fourth-category electric vehicle determines whether to feed energy to the power grid based on the second energy feeding benefit; Among them, the second energy feeding benefit is obtained based on the first energy feeding benefit and a preset increase coefficient; the fourth category electric vehicle is an electric vehicle among the first category electric vehicles that is determined not to feed energy to the power grid and sends information of not feeding energy to the power grid.

7. The control method of the V2G charging and discharging system according to claim 1, characterized in that: Before the step of controlling the V2G charging and discharging device to feed energy to the power grid if at least one second-category electric vehicle is detected to be connected to the V2G charging and discharging device, the step further includes: When receiving the power grid energy feedback information sent by any first-category electric vehicle, treating any first-category electric vehicle as any corresponding second-category electric vehicle; Any V2G charging and discharging device in an idle state is selected from the V2G charging and discharging system as a target V2G charging and discharging device corresponding to any second-category electric vehicle, and the target V2G charging and discharging device is associated and locked with any second-category electric vehicle.

8. The control method of the V2G charging and discharging system according to claim 7, characterized in that: Also includes: If it is detected that any of the second-category electric vehicles has not been connected to the target V2G charging and discharging equipment within a set time period, the target V2G charging and discharging equipment is released.

9. The control method of the V2G charging and discharging system according to claim 8, characterized in that: If it is detected that any of the second-category electric vehicles is not connected to the target V2G charging and discharging device within a set time period, before releasing the target V2G charging and discharging device, it also includes: Determine, according to the owner's location of any one of the second-category electric vehicles and the location of the target V2G charging and discharging device, a predicted time for any one of the second-category electric vehicles to reach the target V2G charging and discharging device as the set time; and / or According to the position of any one of the second-category electric vehicles and the position of the target V2G charging and discharging equipment, a predicted time duration for any one of the second-category electric vehicles to reach the target V2G charging and discharging equipment is determined as the set time duration.

10. A control device for a V2G charging and discharging system, characterized in that: The method comprises a processor and a storage device, wherein the storage device is suitable for storing a plurality of program codes, and the program codes are suitable for being loaded and run by the processor to execute the control method of the V2G charging and discharging system according to any one of claims 1 to 9.

11. A V2G charging and discharging system, characterized in that: The invention comprises a control device of the V2G charging and discharging system as claimed in claim 10.

12. A computer-readable storage medium, characterized in that: A plurality of program codes are stored, and the program codes are suitable for being loaded and run by a processor to execute the control method of the V2G charging and discharging system according to any one of claims 1 to 9.

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