KR20210079768A - The power trading system of electrical car based on a blockchain and controlling method of thereof - Google Patents

Abstract

Disclosed is a blockchain-based electric vehicle power trading system. According to the present invention, the system comprises: a supply-side electric vehicle selling charging electric power; a demand-side electric vehicle purchasing the charging electric power; an electric charging line connected to each of the supply-side electric vehicle and the demand-side electric vehicle and configured to transfer the charging electric power supplied from the supply-side electric vehicle to the demand-side electric vehicle; and a server matching the supply-side electric vehicle with the demand-side electric vehicle, and mediating a paid transaction of the charging electric power based on a predetermined unit price. The server can, upon receiving the first battery capacity, which is the current battery capacity, and the second battery capacity, which is the battery capacity after the sale or purchase of the charging electric power, match the supply-side electric vehicle with the demand-side electric vehicle based on the first battery capacity and the second battery capacity, create block including information on the paid transaction, and distribute and transmit the block to a plurality of electric vehicles registered in the power trading system. According to the present invention, the system may be beneficial to the government's eco-friendly energy project.

Description

Blockchain-based electric vehicle power trading system and its control method {THE POWER TRADING SYSTEM OF ELECTRICAL CAR BASED ON A BLOCKCHAIN AND CONTROLLING METHOD OF THEREOF}

The present invention relates to a block-chain-based electric vehicle power transaction system and a control method thereof, and more particularly, to a block-chain-based electric vehicle electric vehicle power transaction system and a control method thereof that enable electric vehicles to perform power transactions with each other .

Since the Paris Climate Agreement, the world has been cultivating technology in line with the development of eco-friendly energy. Accordingly, electric vehicles are attracting attention in place of internal combustion engine vehicles using chemical fuels. Electric vehicles have the advantage of being eco-friendly and low in noise.

The reason electric vehicles are considered suitable for the future era is that the commercialization of lithium all-solid-state batteries is expected to increase battery capacity. Also, in terms of price, electric vehicles have greater efficiency than general vehicles. The cost of charging an electric vehicle's battery is less than half that of a regular vehicle, and if a charging station is installed in a residential area, it is possible to live a life where you can charge electricity at home and go to work immediately.

However, the capacity (power) of batteries replacing chemical fuels is quite limited compared to general automobiles. Due to the small capacity of the current battery, the average driving distance when fully charged is 200 km, making it impossible to travel long distances. It may not be a big inconvenience to drivers who only drive short distances in the middle of the city, but when the air conditioner or heater is turned on, the battery drains faster. In addition, if a sudden event occurs and the driving distance is unexpectedly increased, the driver drives in a state of anxiety that he may stop in the middle of the road.

Therefore, electric vehicles need to find an electric charging station in the middle for long-distance driving, and have to charge the battery frequently. However, the current infrastructure of electric charging stations for charging batteries of electric vehicles is insufficient. As such, the problem of charging the battery of an electric vehicle while driving is emerging.

An object of the present invention is to provide a blockchain-based electric vehicle power transaction system and a control method thereof, in which anyone can become a supplier or consumer of electric power and easily perform electric power transactions between electric vehicles.

In addition, the present invention is a block-chain-based electric vehicle power that can create new added value by efficiently managing direct demand and supply and direct supply and demand, and transparent and high-security energy transactions can be made by performing power transactions based on the block chain. An object of the present invention is to provide a trading system and a method for controlling the same.

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned are clear to those of ordinary skill in the art to which the embodiments proposed by the description below belong. will be able to be understood

According to the block chain-based electric vehicle power transaction system according to an embodiment of the present invention, a supply electric vehicle that sells charging power; and a demand electric vehicle that purchases the charging power; and an electric charging line connected to each of the supply electric vehicle and the demand electric vehicle, and transferring the charging power supplied from the supply electric vehicle to the demand electric vehicle; and a server that matches the supply electric vehicle and the demand electric vehicle and mediates a paid transaction of the charging power based on a predetermined unit price. Including, wherein the server, when the first battery capacity that is the current battery capacity and the second battery capacity that is the battery capacity after the sale or purchase of the charging power is received from each of the supply electric vehicle and the demand electric vehicle, the first Match the supply electric vehicle and the demand electric vehicle based on the battery capacity and the second battery capacity, generate a block including information on the paid transaction, and use the block to a plurality of electricity registered in the power transaction system It can be distributed and transmitted to vehicles.

According to the control method of the block chain-based electric vehicle power transaction system according to another embodiment of the present invention, the server provides the current battery capacity from each of a supply electric vehicle selling charging power and a demand electric vehicle purchasing the charging power. receiving a first battery capacity and a second battery capacity, which is a battery capacity after sales or purchase of the charging power; and matching, by the server, the supply electric vehicle and the demand electric vehicle based on the first battery capacity and the second battery capacity; and, the supply electric vehicle and the demand electric vehicle are connected by an electric charging line, and the charging power output from the supply electric vehicle is input to the demand electric vehicle. It is possible to mediate the paid transaction of the charging power based on the generated block, which includes information on the paid transaction, and distribute the block to a plurality of electric vehicles registered in the power transaction system.

According to embodiments according to the present invention, anyone can become a supplier or a consumer of electric power and trade electric power between electric vehicles while driving.

In addition, according to embodiments according to the present invention, by performing power transaction based on block chain, transparent and highly secure energy transaction can be made, and new added value can be created by efficiently managing direct demand and supply. .

Furthermore, according to embodiments according to the present invention, it is possible to encourage the use of electric vehicles to help the government's eco-friendly energy business.

1 is a diagram showing the configuration of a blockchain-based electric vehicle power transaction system according to the present invention.
2 is a diagram for explaining an example of a power trading method in a block chain-based electric vehicle power trading system according to the present invention.
3 is a diagram for explaining a method of matching a seller and a consumer in the blockchain-based electric vehicle power transaction system according to the present invention.
4 is a diagram illustrating a control process of a blockchain-based electric vehicle power transaction system according to the present invention.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. However, the technical spirit of the present invention is not limited by the embodiments described below, and other inventions that are degenerate by addition, change, and deletion of other components or other embodiments included within the scope of the technical spirit of the present invention can be easily suggested.

As for the terms used in the present invention, general terms that are currently widely used in relation to the current technology are selected as possible, but in special cases, there are also terms arbitrarily selected by the applicant, and in this case, the meaning is described in detail in the description of the corresponding invention. Therefore, it is clarified in advance that the present invention should be understood as the meaning of the term rather than the simple name of the term. In the description set forth below, the word 'comprising' does not exclude the presence of elements or steps other than those listed.

1 is a diagram showing the configuration of a blockchain-based electric vehicle power transaction system according to the present invention.

The blockchain-based electric vehicle power transaction system according to the present invention may include a supply electric vehicle 110 , a demand electric vehicle 120 , an electric charging line 130 , and a server 140 .

The supply electric vehicle 110 may sell charging power.

For example, when a stationary car that is not driving is full of power, the charging power can be sold to another car.

The demand electric vehicle 120 may purchase charging power.

For example, if a car that can only go as far as 190 km when fully charged needs to travel longer and needs to be charged at a location other than a charging station, charging power can be purchased from another car.

The electric charging line 130 may perform power exchange between the supply electric vehicle 110 and the demand electric vehicle 120 . Specifically, the electric charging line 130 is connected to each of the supply electric vehicle 110 and the demand electric vehicle 120 , and can transmit the charging power supplied from the supply electric vehicle 110 to the electric demand electric vehicle 120 . .

According to an embodiment, the charging device may perform power exchange instead of the electric charging line 130 .

The server 140 may match the supply electric vehicle 110 and the demand electric vehicle 120 , and mediate a paid transaction of charging power based on a predetermined unit price.

Specifically, when the server 140 receives the first battery capacity, which is the current battery capacity, and the second battery capacity, which is the battery capacity after the sale or purchase of charging power, from each of the supply electric vehicle 110 and the demand electric vehicle 120, The supply electric vehicle 110 and the demand electric vehicle 120 may be matched based on the first battery capacity and the second battery capacity.

To this end, the server 140 may execute a matching algorithm or program that matches a supplier and a consumer of electricity according to a predetermined criterion. According to an embodiment, the server 140 may match the supply electric vehicle 110 and the demand electric vehicle 120 by the most efficient algorithm in consideration of the state of the electric vehicles. The algorithm matches the transaction based on the current location and order requested by the electric vehicle and the battery capacity, and the most optimal algorithm can be used by additionally considering other information.

The server 140 may set a predetermined unit price differently in response to a time period for mediating paid transactions.

The server 140 can manage transaction information in a more reliable and efficient manner and build a transparent energy transaction system by managing paid transaction details according to a blockchain-based distributed management system.

In this case, the server 140 may generate a block including information on the paid transaction, and distribute the block to a plurality of electric vehicles registered in the power transaction system and transmit it. Here, the information on the paid transaction may include at least one of borrower information, a charged coin, a current battery capacity (SoCi), and a desired battery capacity (SoCr) to buy or sell.

2 is a diagram for explaining an example of a power trading method in a block chain-based electric vehicle power trading system according to the present invention.

A vehicle is parked at a predetermined place ( 210 ).

Here, the predetermined place may be a parking lot or an equivalent stopable place, but the present invention is not limited thereto.

Money is exchanged into virtual currency (220).

The real currency currently used in real life can be exchanged for virtual currency, and the virtual currency can be used for electricity transaction on a blockchain-based power trading platform.

According to an embodiment, the virtual currency may be an EVcoin defined for power transaction between electric vehicles. Power transactions between electric vehicles can be performed using only EVcoin. 1 EVcoin is equal to 100 won. The total number of EVcoins issued for use in electricity trading is 1,000,000.

Recently, credit cards are often used instead of cash, and payment fees are charged when using a credit card. Therefore, by using a self-defined EVcoin for power transaction, it makes it possible to perform simple transactions between borrowers and further reduce the burden of payment fees.

Car information is registered (230).

In order to participate in electricity trading, an account registration is required. In this case, information of the electric vehicle can be entered into the account created on the virtual network. Specifically, vehicle information and user information may be registered in an application operated by the server 140 . When a user registers related information, an electronic wallet address is assigned and an electronic wallet corresponding thereto is created.

The electronic wallet records car information in blocks. Here, the vehicle information may include a vehicle number, vehicle owner information, charged coins, a current battery state (SoCi), a desired battery capacity (SoCr), and the like.

Matching and power transaction are performed (240).

The server 140 may automatically distinguish a seller and a buyer of electricity. Specifically, when the current battery state and the desired battery capacity to buy or sell are input, whether the battery is a seller or a buyer is automatically distinguished.

Server 140 may drive matching and trading algorithms. In this case, the transaction is made by matching the seller and the buyer with an algorithm based on the state information of the electric vehicle.

The server 140 may perform power transaction based on the block chain. For example, an Ethereum-based blockchain can be used to broker power transactions between sellers and consumers.

Converting cryptocurrency into money (250).

After completing the electricity transaction, the car owner can exchange the virtual currency (EVcoin) obtained through the transaction back into real money. In this case, the exchange is carried out according to the present value. Currency can be exchanged at any time the user wants.

3 is a diagram for explaining a method of matching a seller and a consumer in the blockchain-based electric vehicle power transaction system according to the present invention.

In order to perform power trading between electric vehicles, a physical energy network must be configured and a virtual energy trading platform must exist. The physical energy network may be composed of an electric vehicle that wants to trade electricity, a server, and a physical charging device that enables the exchange of electric power between the electric vehicle. The virtual energy trading platform is operated by the server 140, checks the battery capacity of cars registered in the application operated by the platform, matches and records the cars to be traded according to the amount of electricity, and manages the transaction details.

Accordingly, the electric vehicle can conveniently charge power at a location closer to the charging station. In addition, the virtual energy trading platform provider (operator) can make a profit from the transaction fee generated for each transaction. For example, a certain part of the transaction amount is designated as a commission (1%), so that the platform developer or operator also benefits.

For power trading between electric vehicles, the trading platform operates an algorithm that matches the cars participating in the power transaction with each other in consideration of the input information, the departure time and arrival time of the vehicle.

Referring to FIG. 3 , there are six electric vehicles that want to participate in power transaction ( 310 , 320 , 330 , 340 , 350 , 360 ). In this case, the seller and the buyer are determined by comparing the current state of the battery and the state of the battery after charging. Specifically, the first electric vehicle 310 , the second electric vehicle 320 , and the third electric vehicle 330 whose battery state is decreased after charging than the current battery state becomes a seller (D: Discharging). On the other hand, the fourth electric vehicle 340 and the sixth electric vehicle 360, whose battery state increases after charging than the current battery state, become a buyer (C: Charging, consumer). In addition, if the current battery state and the battery state after charging are the same, it becomes a non-trader (I: Idle).

After matching between the seller and the trader is completed, electricity transactions are made as many times as desired, and the transaction details are recorded on the electric vehicle power transaction blockchain system.

Since the transaction contents of the blockchain cannot be modified without the consent of a majority once recorded in a block, trust between traders will be formed. On the other hand, electric vehicles that want to participate in the transaction once more are included in the above algorithm once again, and after a certain period of time, the vehicle for which the transaction is not made may terminate the system.

On the other hand, the borrower of an electric vehicle can make a profit by using the difference in electricity price by time period.

Currently, according to the electric vehicle charging service of Korea Electric Power Corporation, charging rates for each time period (light load time, medium load time, and maximum load time period) are divided differently. Specifically, the following [Table 1] is a table showing charging rates (KRW/kWh, VAT excluded) by time zone.

division summertime spring and autumn winter light load time 83.6 won 84.1 won 95.5 won mid-load time 129.0 won 90.3 won 120.2 won peak load time 174.3 won 92.8 won 152.6 won

The following [Table 2] is a table showing the application time zone for each season.

division summertime spring and autumn winter light load time 23-9 o'clock 23-9 o'clock 23-9 o'clock mid-load time 9-10 o'clock, 12-13 o'clock, 17-23 o'clock 9-10 o'clock, 12-13 o'clock, 17-23 o'clock 9-10 o'clock, 12-17 o'clock, 20-22 o'clock peak load time 10-12 o'clock, 13-17 o'clock 10-12 o'clock, 13-17 o'clock 10-12 o'clock, 17-20 o'clock, 22-23 o'clock

As such, the price of electricity varies from time to time. Therefore, by using the power trading system according to the present invention, it is possible to charge electricity at home when electricity is cheap and sell electricity to other electric vehicles that need electricity when electricity is expensive.

For example, it costs 8,360 won to charge 100 kWh during the light load period based on summer. If it is assumed that the charged power is not used and sold to other electric vehicles, sales of 80 kWh during the peak load period will result in a sales profit of 13,944 won (= 174.3 won X 80 kWh). In this case, the net profit would be 13,944 won - 8360 won = 5584.

Therefore, if you fully charge the battery at home late at night and leave only as much as you need, and then sell the electricity you have during peak load hours, you may be able to make money from electricity trading.

4 is a diagram illustrating a control process of a blockchain-based electric vehicle power transaction system according to the present invention.

First, the trading platform receives information on the current battery capacity and the battery capacity after the sale or purchase of charging power from each of the supply electric vehicle and the demand electric vehicle (S401).

The trading platform matches the supply electric vehicle and the demand electric vehicle based on the current battery capacity and the battery capacity after the sale or purchase of charging power (S402).

In this case, a paid transaction of charging power is established between the supply electric vehicle and the demand electric vehicle based on a predetermined unit price (S403).

The supply electric vehicle and the demand electric vehicle are connected by an electric charging line (S404).

The charging power of the supply electric vehicle is supplied to the demand electric vehicle (S405).

The trading platform creates a block including information about the paid transaction (S406).

The generated block is distributed and transmitted to a plurality of electric vehicles registered in the power transaction system (S407).

Thereby, the power transaction process ends.

The present invention can be applied not only to electric vehicle power, but also to various renewable energy sharing systems such as carbon credits or solar power generation facility sharing systems.

As described above, according to the present invention, anyone can become a supplier or consumer (prosumer) of electricity by changing the existing centralized energy transaction method to a blockchain-based distributed transaction method.

In addition, by performing electricity transactions based on the block chain, transparent and highly secure energy transactions can be made, and new added values can be created by efficiently managing supply and demand directly.

In addition, by using virtual currency for electric power transactions, quick settlement is possible and transaction costs are reduced by eliminating change necessary for cash transactions or terminals necessary for card transactions.

Furthermore, it can help the government's eco-friendly energy business by encouraging the use of electric vehicles.

Meanwhile, the above-described method can be written as a program that can be executed on a computer, and can be implemented in a general-purpose digital computer that operates the program using a computer-readable medium. In addition, the structure of the data used in the above-described method may be recorded in a computer-readable medium through various means. It should be understood that a recording medium recording an executable computer program or code for performing various methods of the present invention does not include temporary objects such as carrier waves or signals. The computer-readable medium may include a storage medium such as a magnetic storage medium (eg, a ROM, a floppy disk, a hard disk, etc.) and an optically readable medium (eg, a CD-ROM, a DVD, etc.).

In the above, the embodiment has been mainly described, but this is only an example and does not limit the present invention, and those of ordinary skill in the art to which the present invention pertains are not exemplified above within the range that does not depart from the essential characteristics of the present embodiment. It can be seen that various modifications and applications are possible. For example, each component specifically shown in the embodiment may be implemented by modification. And differences related to such modifications and applications should be construed as being included in the scope of the present invention defined in the appended claims.

110: supply electric vehicle 120: demand electric vehicle
130: electric charging line 140: server

Claims (5)

In the blockchain-based electric vehicle power transaction system,
supply electric vehicles that sell charging power;
a demand electric vehicle that purchases the charging power;
an electric charging line connected to each of the supply electric vehicle and the demand electric vehicle, and transferring the charging power supplied from the supply electric vehicle to the demand electric vehicle; and
a server that matches the supply electric vehicle and the demand electric vehicle, and mediates a paid transaction of the charging power based on a predetermined unit price; including,
The server is
When the first battery capacity that is the current battery capacity and the second battery capacity that is the battery capacity after the sale or purchase of the charging power are received from each of the supply electric vehicle and the demand electric vehicle, the first battery capacity and the second battery capacity matching the supply electric vehicle and the demand electric vehicle based on
A block chain-based electric vehicle power transaction system that generates a block including information on the paid transaction and distributes and transmits the block to a plurality of electric vehicles registered in the power transaction system. According to claim 1,
The server is
A block chain-based electric vehicle power transaction system that sets the predetermined unit price differently in response to the time period for brokering the paid transaction. According to claim 1,
The server is
A blockchain-based electric vehicle power transaction system that matches the supply electric vehicle and the demand electric vehicle by an algorithm based on the state information of the electric vehicle. According to claim 1,
Information on the above paid transaction,
A blockchain-based electric vehicle power trading system, including at least one of the borrower information, the coins charged, the current battery capacity (SoCi), and the battery capacity to buy or sell (SoCr) In a control method of a block chain-based electric vehicle power transaction system,
The server receives the first battery capacity, which is the current battery capacity, and the second battery capacity, which is the battery capacity after the sale or purchase of the charging power, from each of a supply electric vehicle selling charging power and a demand electric vehicle purchasing the charging power step;
matching, by the server, the supply electric vehicle and the demand electric vehicle based on the first battery capacity and the second battery capacity;
The supply electric vehicle and the demand electric vehicle are connected by an electric charging line, and the charging power output from the supply electric vehicle is input to the demand electric vehicle,
The server mediates the paid transaction of the charging power based on a predetermined unit price, generates a block including information on the paid transaction, and distributes and transmits the block to a plurality of electric vehicles registered in the power transaction system A control method of a blockchain-based electric vehicle power transaction system.

Images