A wireless communication charging and discharging method and system based on V2G technology

Abstract

This invention discloses a wireless communication charging and discharging method and system based on V2G technology, comprising: a target vehicle sending vehicle information to a target charging station; the target charging station determining a target charging pile based on the vehicle information and sending the charging pile information of the target charging pile to the target vehicle; determining the target vehicle's travel route based on the charging pile information; the target vehicle entering the target charging station according to the travel route, the ground lock corresponding to the target charging pile closing, the target vehicle determining the interface of the target charging pile based on image recognition and entering the position corresponding to the interface; and the target vehicle charging and discharging at the charging pile. The charging solution provided by this invention enables electric vehicles to quickly find charging and discharging locations and smoothly complete charging and discharging when needed, avoiding the energy wasted in searching for charging piles, and providing economic benefits to businesses and users while meeting charging and discharging needs.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle charging technology, and in particular to a wireless communication charging and discharging method and system based on V2G technology. Background Technology

[0002] In recent years, the electric vehicle industry has developed rapidly, but its adoption remains limited, with charging infrastructure being a major contributing factor. Vehicle-to-grid (V2G) technology is a new type of grid technology. Electric vehicles not only act as electricity consumers but also as mobile, distributed energy storage units connected to the grid, feeding energy back to it. V2G technology can provide more organized and intelligent charging stations to meet the charging demands brought about by the large-scale development of electric vehicles. Simultaneously, the energy interaction between electric vehicles and the grid can provide economic benefits to businesses and users.

[0003] Current charging methods are not proactive, intelligent, or orderly enough. They mainly rely on charging stations receiving charging requests from electric vehicles, which then plan their own routes to the charging station based on its location. This can easily lead to situations where an electric vehicle needs to charge but cannot accurately find a charging location, the charging location is occupied, or the interface is incompatible, which inevitably wastes a lot of time and electricity. Summary of the Invention

[0004] This invention aims to at least partially solve one of the technical problems in the aforementioned technologies. Therefore, the objective of this invention is to propose a method for matching electric vehicles with charging stations, automatically planning the route between the electric vehicle and the charging station, and rationally scheduling vehicles, so that the electric vehicle can quickly find a charging location and successfully complete charging when needed.

[0005] To achieve the above objectives, the first aspect of this invention proposes a wireless communication charging and discharging method based on V2G technology, comprising:

[0006] The target vehicle sends vehicle information to the target charging station;

[0007] The target charging station determines the target charging pile based on the vehicle information and sends the charging pile information of the target charging pile to the target vehicle;

[0008] The travel route of the target vehicle is determined based on the charging pile information;

[0009] The target vehicle enters the target charging station according to the travel route, the ground lock corresponding to the target charging pile is closed, and the target vehicle determines the interface of the target charging pile based on image recognition and enters the position corresponding to the interface.

[0010] The target vehicle is being charged and discharged at the charging station.

[0011] Preferably, before the target vehicle sends vehicle information to the target charging station, the method further includes:

[0012] The charging station sends a charging / discharging invitation to the vehicle;

[0013] When the vehicle accepts the charging / discharging invitation or when the vehicle's battery level is below a threshold, the vehicle sends a charging / discharging request to the charging station, and the vehicle is designated as the target vehicle and the charging station as the target charging station.

[0014] The target vehicle sends the vehicle information to the target charging station.

[0015] Preferably, the vehicle information includes vehicle location information, vehicle model information, and power interface information; the charging pile information includes location information and usage information.

[0016] Preferably, determining the travel route of the target vehicle based on the charging pile information includes:

[0017] The location information of the target vehicle is obtained as the first location information;

[0018] The location information of the target charging pile is used as the second location information;

[0019] Based on the first location information, the first coordinate point and the first distance matrix are obtained;

[0020] The second coordinate point and the second distance matrix are obtained based on the second location information;

[0021] The shortest path between the first coordinate point and the second coordinate point is calculated using the ant colony algorithm; when calculating the shortest path using the ant colony algorithm, the number of ants is proportional to the number of target charging piles in the target charging station;

[0022] Based on the first distance matrix and the second distance matrix, determine several shortest paths between the target vehicle and the target charging pile;

[0023] Based on the travel routes of all vehicles within the target charging station area, the shortest paths are filtered to obtain the target path, and the travel route corresponding to the target path is taken as the travel route of the target vehicle.

[0024] Preferably, based on the travel routes of all vehicles within the target charging station area, the shortest paths are filtered to obtain the target path, including:

[0025] When there are several vehicles waiting to be charged or discharged within the target charging station area, all vehicles waiting to be charged or discharged are scheduled in sequence according to their charging and discharging waiting time.

[0026] When the travel routes of other vehicles within the target charging station range do not affect the target vehicle, or when dispatching the target vehicle, the shortest path among the several shortest paths corresponding to the shortest travel route is selected as the target path.

[0027] Preferably, after determining the route of the target vehicle, the target vehicle sends an estimated arrival time or a charge / discharge cancellation command to the target charging station.

[0028] Preferably, the target vehicle determines the interface of the target charging station based on image recognition and drives into the location corresponding to the interface, including:

[0029] Obtain the interface image of the target charging pile interface;

[0030] The interface image is converted to grayscale to obtain a grayscale interface image;

[0031] The grayscale of the interface image is normalized. According to a preset image processing algorithm, the interface grayscale image is divided into several pixel grids and several pixel blocks. The feature information of the several pixel blocks is concatenated to obtain the feature vector of the target charging pile interface image.

[0032] The location of the charging pile interface is determined based on the feature vector.

[0033] The target vehicle drives into the position corresponding to the interface, and the charging pile interface docks with the target vehicle to determine the charging and discharging mode and the estimated completion time.

[0034] Preferably, the ground lock switch of the target charging pile is a multi-level control switch; when the target charging pile detects that the target vehicle has entered the external area of ​​the target charging pile via Bluetooth, the first-level ground lock is turned off; when the target charging pile detects that the target vehicle has entered the internal area of ​​the charging pile via infrared, the second-level ground lock is turned off.

[0035] Preferably, the target vehicle's account is bound to the metering data module, and the target charging station's account is bound to the metering data module;

[0036] The metering data module is installed in the target vehicle and / or the target charging pile;

[0037] After the target vehicle charges and discharges at the charging pile, the metering data module deducts the corresponding charge and discharge fee from the target vehicle's account or the target charging station's account based on the charge and discharge amount and pays the fee to the corresponding account.

[0038] After the target vehicle has been charging and discharging at the charging pile, the target charging station reminds the target vehicle to leave the target charging pile.

[0039] After the target vehicle leaves the target charging station, the multi-level ground locks of the target charging station are closed sequentially; when the dwell time of the target vehicle in the target charging station exceeds a threshold, the metering data module deducts the parking fee from the target vehicle's account based on the dwell time and pays it to the target charging station's account.

[0040] A second aspect of this invention discloses a wireless communication charging and discharging system for implementing the above-described method, comprising: a vehicle, a V2G charging station, and a power grid; wherein,

[0041] The vehicle includes: a vehicle wireless communication module for communicating with the V2G charging station; a vehicle data processing system for processing data; a BMS battery management system for managing the battery pack; and a battery pack for energy storage or power supply.

[0042] The V2G charging station includes: a V2G charging pile for exchanging energy with the vehicle's battery pack or the power grid; a charging station wireless communication module for communicating with the vehicle; a positioning module for determining the location information of the charging pile; an information matching module for matching vehicle information with charging pile information; a monitoring module for monitoring vehicles within a preset range; a route planning module for planning the vehicle's travel route and scheduling the vehicle's travel route; a queue information query module for querying charging pile queue information; a multi-level ground lock module for controlling ground locks; a metering data management module for measuring the vehicle's charging and discharging information; a credit payment module for controlling payments between the target vehicle's account and the charging station's account; and a vehicle feedback module for obtaining vehicle feedback information.

[0043] Compared with the prior art, the beneficial effects of the present invention are: the present invention provides a wireless communication charging solution based on V2G technology, which makes the charging process more orderly and intelligent. Electric vehicles can quickly find a charging location when they need to charge and complete the charging smoothly, avoiding unnecessary energy consumption in the process of finding charging piles. Moreover, it can provide certain economic benefits to merchants and users while meeting charging needs.

[0044] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings.

[0045] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0046] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0047] Figure 1 A schematic diagram of a wireless communication charging and discharging method based on V2G technology;

[0048] Figure 2 This is a schematic diagram of a wireless communication charging and discharging system based on V2G technology. Detailed Implementation

[0049] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0050] like Figure 1 As shown, this invention provides a wireless communication charging and discharging method based on V2G technology, comprising:

[0051] The target vehicle sends vehicle information to the target charging station;

[0052] The target charging station determines the target charging pile based on the vehicle information and sends the charging pile information of the target charging pile to the target vehicle;

[0053] The travel route of the target vehicle is determined based on the charging pile information;

[0054] The target vehicle enters the target charging station according to the travel route, the ground lock corresponding to the target charging pile is closed, and the target vehicle determines the interface of the target charging pile based on image recognition and enters the position corresponding to the interface.

[0055] The target vehicle is being charged and discharged at the charging station.

[0056] Figure 2 A wireless communication charging and discharging system based on V2G technology, using the method described in the figure, includes: a vehicle, a V2G charging station, and a power grid; wherein,

[0057] The vehicle includes: a vehicle wireless communication module for communicating with the V2G charging station; a vehicle data processing system for processing data; a BMS battery management system for managing the battery pack; and a battery pack for energy storage or power supply.

[0058] The V2G charging station includes: a V2G charging pile for exchanging energy with the vehicle's battery pack or the power grid; a charging station wireless communication module for communicating with the vehicle; a positioning module for determining the location information of the charging pile; an information matching module for matching vehicle information with charging pile information; a monitoring module for monitoring vehicles within a preset range; a route planning module for planning the vehicle's travel route and scheduling the vehicle's travel route; a queue information query module for querying charging pile queue information; a multi-level ground lock module for controlling ground locks; a metering data management module for measuring the vehicle's charging and discharging information; a credit payment module for controlling payments between the target vehicle's account and the charging station's account; and a vehicle feedback module for obtaining vehicle feedback information.

[0059] In an embodiment of the present invention, before and after the target vehicle sends vehicle information to the target charging station, the process includes: sending a charging and discharging invitation to a nearby electric vehicle through the wireless communication module of the charging station, and attaching the current charging and discharging price; when the electric vehicle accepts the invitation, or when the BMS detects that the electric vehicle's battery level is lower than a threshold, the electric vehicle sends a charging request through the wireless communication module, and simultaneously sends electric vehicle information and charging interface.

[0060] In an embodiment of the present invention, the target charging station determines the target charging pile based on vehicle information and sends the charging pile information of the target charging pile to the target vehicle. This includes: the charging station receiving electric vehicle information; an information matching module using distributed computing technology matching the charging pile with the corresponding charging interface based on the electric vehicle information, charging interface, and charging pile usage; a positioning module specifying the location of the charging pile and sending the corresponding location, along with the number of people in the queue and the estimated waiting time. The electric vehicle can plan a route based on the location and send the estimated arrival time; it can also cancel the trip en route.

[0061] In an embodiment of the invention, the travel route of the target vehicle is determined based on the charging pile information. The electric vehicle enters the charging station, and the route planning module uses an ant colony algorithm to plan the optimal route based on the current location of the electric vehicle and the location of the designated charging pile. This route is then transmitted via the charging station's wireless communication module to avoid conflicts with other vehicles' routes and prevent congestion. The specific process includes: abstracting the current location of the electric vehicle and the location of the designated charging pile as coordinate points; using the ant colony algorithm to calculate the shortest path between the electric vehicle's coordinate points and the charging pile's coordinate points; and converting the coordinate information of the electric vehicle and the charging pile into a distance matrix and saving it. The ant colony size m is set to 1.2 times the total number of charging piles, the pheromone factor aplha = 3, the heuristic function factor beta = 3, the pheromone evaporation factor rou = 0.3, the pheromone constant Q = 500, and the maximum number of iterations t = 300. The distance matrix is ​​used to obtain one or more shortest paths between electric vehicles and designated charging stations. At the same time, the monitoring module is used to obtain other vehicles in the area. The shortest path with the fewest vehicles is selected as the optimal path. If multiple electric vehicles are at the same intersection, the waiting time at the intersection is compared and the vehicle with the longest waiting time is dispatched first, so as to save energy for vehicles with low battery and save customers' time.

[0062] In an embodiment of the present invention, the Bluetooth sensing range of the multi-level parking lock module is set to 8 meters. When the electric vehicle enters the Bluetooth sensing range and successfully connects, the first-level control is turned off. When the infrared sensor detects that the electric vehicle has arrived near the designated charging station, the second-level control is turned off, and the parking lock will then close. This can achieve the beneficial effect of accurate identification and avoid parking space occupancy.

[0063] In an embodiment of the present invention, the target vehicle determines the interface of the target charging pile based on image recognition and drives into the corresponding position of the interface. This includes: providing a charging area image through a monitoring module; the electric vehicle extracting features from the charging pile interface image using the HOG feature extraction algorithm; specifically, this includes: converting the charging pile interface image to grayscale; normalizing the image color using GAMMA correction; calculating the gradient of each pixel using the Roberts cross operator; dividing the image into 8*8 pixel cells; forming blocks of 2*2 cells; and finally concatenating the features of all blocks to obtain the feature vector of the charging pile interface image. The charging pile interface has a slider. When the electric vehicle arrives at the designated position, the slider pushes the interface to complete the docking with the V2G charging pile, selects fast charging, normal charging, or discharging mode, and sends the estimated completion time. This achieves the beneficial effects of high interface matching accuracy and high automation.

[0064] In an embodiment of the invention, before and after the target vehicle charges or discharges at the charging station, the following steps are taken: the bank card information of the person responsible for the electric vehicle is bound to the APP, and automatic charging deduction permission is enabled. After charging or discharging is completed, the metering data management module records the electricity consumption, calculates the price according to the corresponding electricity price, and makes a credit payment, immediately deducting or subsidizing the fee, and providing a feedback channel. Simultaneously, the electric vehicle is reminded to leave within half an hour. If the parking time exceeds half an hour, the fee will be deducted again based on the parking duration. When the multi-level parking lock module senses that the electric vehicle has left the vicinity of the designated charging station, Bluetooth is disconnected, and the parking lock opens.

[0065] The beneficial effects of the above technical solutions are as follows: Wireless communication via the charging station sends charging / discharging invitations, alerting nearby electric vehicles to the presence of a charging station and thus promoting consumption. The information matching, positioning, and route planning modules accurately locate suitable charging piles and plan the optimal route, saving time and energy. The queue information query module provides users with the number of people in the queue and the queue time. The charging space is equipped with a multi-level ground lock module using infrared sensors and Bluetooth. The infrared sensors detect whether an electric vehicle has arrived at the designated area, while Bluetooth accurately confirms whether the vehicle belongs to the designated parking space, preventing unauthorized occupation of the charging space.

[0066] The charging station's monitoring module provides images, allowing vehicles to more accurately and quickly connect to the charging piles. V2G charging piles can be fully charged during off-peak hours and feed energy back to the grid during peak hours, generating revenue for businesses even when there are no customers. Furthermore, V2G charging piles also enable energy and information exchange between electric vehicles and the grid. Electric vehicle users can utilize the energy storage function of their batteries to respond to electricity prices, providing services to the grid and thus generating economic benefits for themselves.

[0067] The metering data management module records the amount of electricity charged or discharged and calculates the transaction amount based on the current electricity price. The credit payment module links to bank cards, enabling more convenient and faster payment and receipt. The vehicle feedback module provides a channel for users to provide feedback, allowing charging stations to improve their services based on the feedback information.

[0068] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A wireless communication charging and discharging method based on V2G technology, characterized in that, The method comprises the following steps: a target vehicle sends vehicle information to a target charging station; the target charging station determines a target charging pile according to the vehicle information and sends charging pile information of the target charging pile to the target vehicle; a travel route of the target vehicle is determined according to the charging pile information; the target vehicle drives into the target charging station according to the travel route, a corresponding ground lock of the target charging pile is closed, the target vehicle determines an interface of the target charging pile based on image recognition and drives into a corresponding position of the interface; the target vehicle performs charging and discharging at the charging pile; wherein the vehicle information comprises vehicle position information, vehicle model information and power supply interface information; the charging pile information comprises position information and use condition information; determining the travel route of the target vehicle according to the charging pile information comprises the following steps: obtaining position information of the target vehicle as first position information; obtaining position information of the target charging pile as second position information; obtaining a first coordinate point and a first distance matrix according to the first position information; obtaining a second coordinate point and a second distance matrix according to the second position information; calculating a shortest path between the first coordinate point and the second coordinate point according to an ant algorithm; when the shortest path is calculated according to the ant algorithm, the number of ants is proportional to the number of target charging piles in the target charging station; determining a plurality of shortest paths between the target vehicle and the target charging pile according to the first distance matrix and the second distance matrix; screening the plurality of shortest paths according to travel routes of all vehicles within a range of the target charging station to obtain a target path, and taking a travel route corresponding to the target path as the travel route of the target vehicle; screening the plurality of shortest paths according to travel routes of all vehicles within a range of the target charging station to obtain a target path comprises the following steps: when there are a plurality of vehicles to be charged and discharged within the range of the target charging station, all the vehicles to be charged and discharged are dispatched in order of charging and discharging waiting time; when travel routes of other vehicles within the range of the target charging station do not affect the target vehicle or the target vehicle is dispatched, a shortest path corresponding to a shortest travel route in the plurality of shortest paths is selected as the target path; the target vehicle determines the interface of the target charging pile based on image recognition and drives into a corresponding position of the interface, which comprises the following steps: obtaining an interface image of the target charging pile interface; performing grayscale processing on the interface image to obtain an interface grayscale image; normalizing the grayscale of the interface grayscale image, dividing the interface grayscale image into a plurality of pixel grid and a plurality of pixel block according to a preset image processing algorithm, and concatenating feature information of the plurality of pixel block to obtain a feature vector of the target charging pile interface image; determining the interface position of the charging pile according to the feature vector; the target vehicle drives into the corresponding position of the interface, the charging pile interface and the target vehicle are connected, a charging and discharging mode and a predicted completion time are determined; The target vehicle determines the interface of the target charging pile based on image recognition and drives into the corresponding position of the interface, and the method further comprises: According to the HOG feature extraction algorithm, the charging pile interface image is subjected to feature extraction, which comprises: gray-scale processing of the charging pile interface image, color normalization of the image by GAMMA correction method, calculation of the gradient of each pixel of the image by Roberts cross operator, division of the image into 8*8 pixel points cell, 2*2 cell to form a block, and concatenation of the features of all blocks to obtain the feature vector of the charging pile interface image; the charging pile interface has a slider, and when the electric vehicle arrives at the specified position, the slider pushes the interface to complete the docking with the V2G charging pile. 2.The wireless communication charging and discharging method based on V2G technology of claim 1, wherein, Before the target vehicle sends the vehicle information to the target charging station, the method further comprises: The charging station sends a charging and discharging invitation to the vehicle; When the vehicle accepts the charging and discharging invitation or the power of the vehicle is lower than a threshold, the vehicle sends a charging and discharging request to the charging station, and the vehicle is taken as the target vehicle and the charging station is taken as the target charging station; The target vehicle sends the vehicle information to the target charging station. 3.The wireless communication charging and discharging method based on V2G technology of claim 1, wherein, After determining the travel route of the target vehicle, the target vehicle sends the estimated arrival time or the charging and discharging cancellation command to the target charging station. 4.The wireless communication charging and discharging method based on V2G technology of claim 1, wherein, The ground lock switch of the target charging pile is a multi-stage control switch; when the target vehicle drives into the external area of the target charging pile, the target charging pile detects it by Bluetooth, and the first-stage ground lock control is closed; when the target vehicle drives into the internal area of the charging pile, the target charging pile detects it by infrared rays, and the second-stage ground lock control is closed. 5.The wireless communication charging and discharging method based on V2G technology of claim 4, wherein, The account of the target vehicle is bound to the metering data module, and the account of the target charging station is bound to the metering data module; The metering data module is arranged in the target vehicle and / or the target charging pile; After the target vehicle performs charging and discharging at the charging pile, the metering data module deducts the corresponding charging and discharging power cost from the account of the target vehicle or the account of the target charging station according to the charging and discharging power and pays it to the corresponding account; After the target vehicle performs charging and discharging at the charging pile, the target charging station reminds the target vehicle to drive out of the target charging pile; After the target vehicle drives out of the target charging pile, the multi-stage ground lock of the target charging pile is closed in sequence; when the residence time of the target vehicle in the target charging pile exceeds a threshold, the metering data module deducts the parking fee from the account of the target vehicle according to the residence time and pays it to the account of the target charging station.

6. A wireless communication charging and discharging system for implementing the method of any one of claims 1-5, characterized in that, It comprises: a vehicle, a V2G charging station and a power grid; wherein, the vehicle comprises: a vehicle wireless communication module for communication with the V2G charging station; a vehicle data processing system for processing data; a BMS battery management system for managing the battery pack; and a battery pack for energy storage or power supply; The V2G charging station comprises a V2G charging pile for exchanging energy with the battery pack of the vehicle or the power grid; a charging station wireless communication module for communicating with the vehicle; a positioning module for determining charging pile position information; an information matching module for matching vehicle information and charging pile information; a monitoring module for monitoring vehicles within a preset range; a route planning module for planning the travel route of the vehicle and dispatching the travel route of the vehicle; a queuing information query module for querying charging pile queuing information; a multi-level ground lock module for controlling the ground lock; a metering data management module for metering the charging and discharging information of the vehicle; a credit payment module for controlling the payment of the target vehicle account and the charging station account; a vehicle feedback module for obtaining vehicle feedback information.

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