CN111861661A - Electric vehicle charging transaction method and device - Google Patents
Electric vehicle charging transaction method and device Download PDFInfo
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Abstract
The embodiment of the invention provides a method and a device for electric vehicle charging transaction, wherein the method comprises the following steps: acquiring power utilization time information and user number information, and inquiring current credit value and user point balance information of a user in a block chain account book according to the user number information; determining a consumption integral value of the transaction and a user credit score of the transaction according to the electricity utilization time information and the current credit value information of the user; and obtaining the current point balance information of the user according to the point balance information of the user and the consumption integral value of the transaction, and writing the current point balance information of the user and the credit score of the transaction into a block chain account book. By designing an account of the block chain charging transaction and using the power point to replace a token to circulate funds, the transaction information can be effectively prevented from being falsified, and a user credit mechanism and a service fee calculation model based on the user credit degree are designed, so that the credit transaction is facilitated, and the healthy operation of a charging transaction market is maintained.
Description
Technical Field
The invention relates to the technical field of charging transaction, in particular to a charging transaction method and device for an electric vehicle.
Background
Electric vehicles have been developed rapidly in recent years due to their high energy conversion efficiency and low emission characteristics. However, while the electric automobile industry in China realizes the leap-type development, the problems of paying no attention to charging piles, charging infrastructure construction and operation mode lag still exist, and the phenomena of inconsistent development such as no piles in vehicles, more piles in vehicles and the like are caused.
The private charging pile has obvious shared economic attributes, has huge potential value of business, and has wide development prospect and business innovation space. At present, many manufacturers begin to distribute and share charging piles to solve the problem that electric automobiles are difficult to charge.
However, most of the existing charging pile sharing platforms adopt a centralized management structure, and the following disadvantages exist: extra human resources and other costs are required to be added, manual management is carried out, information of a vehicle owner and the charging pile is stored unilaterally by the platform, the risk of privacy leakage of a user exists, and the centralized management platform cannot be self-certified; once the centralized platform is attacked, the risks of user information leakage and transaction data tampering exist, and information safety cannot be guaranteed, most of the existing charging pile networks are self-organizing networks of governments and enterprises, standards are not uniform, the cost of establishing credit in the process of inter-operator cooperation is high, and the transaction and payment processes are complex; meanwhile, data interconnection and intercommunication are difficult, and an information isolated island is easy to form.
Therefore, how to better realize the charging transaction of the electric vehicle has become an urgent problem to be solved in the industry.
Disclosure of Invention
Embodiments of the present invention provide a method and an apparatus for electric vehicle charging transaction, so as to solve the technical problems mentioned in the above background art, or at least partially solve the technical problems mentioned in the above background art.
In a first aspect, an embodiment of the present invention provides an electric vehicle charging transaction method, including:
acquiring power utilization time information and user number information, and inquiring current credit value and user point balance information of a user in a block chain account book according to the user number information;
determining a consumption integral value of the transaction and a user credit score of the transaction according to the electricity utilization time information and the current credit value information of the user;
and obtaining the current point balance information of the user according to the point balance information of the user and the consumption integral value of the transaction, and writing the current point balance information of the user and the credit score of the transaction into a block chain account book.
More specifically, the consumption credit value of the current transaction includes: the value of the charge consumption integral of the transaction and the value of the service integral of the transaction.
More specifically, the step of determining the consumption point value of the transaction according to the power consumption time information and the current reputation value information of the user specifically includes:
acquiring a power utilization price coefficient according to the current credit value information of the user;
and determining a primary transaction consumption integral value according to the electricity utilization time information and the time-sharing pricing information, determining a current charging consumption integral value according to the electricity utilization price coefficient and the primary transaction consumption integral value, and determining a current transaction consumption integral value according to the current transaction charging consumption integral value.
More specifically, after the step of obtaining the current credit balance information of the user according to the credit balance information of the user and the consumption credit value of the transaction, the method further comprises the following steps:
inquiring the current transaction times of the user in a block chain account book according to the user number information;
and calculating a new user credit value according to the current transaction times of the user, the current transaction consumption integral value and the current user credit value, and writing the new user credit value into a block chain account book.
More specifically, after the step of obtaining the current credit balance information of the user according to the credit balance information of the user and the consumption credit value of the transaction, the method further comprises the following steps:
Acquiring service score information of the transaction charging pile, and inquiring a charging pile endorsement experience value and a charging pile current service score in a block chain account book according to the charging pile number;
and calculating a new charging pile service score according to the charging pile service score information, the charging pile current service score, the charging pile endorsement experience value and the charging pile current service score of the transaction, and writing the new charging pile service score into a block chain account book.
More specifically, the step of inquiring the charging pile endorsement experience value in the block chain account book according to the charging pile number specifically includes:
acquiring the number of times of the charging pile serving as an endorsement node in a block chain account book according to the number of the charging pile;
and (4) carrying out quotient calculation on the number of times of the charging pile serving as the endorsement node and the total number of times of updating the account book to obtain the endorsement experience value of the charging pile.
More specifically, after the step of determining the consumption point value of the transaction and the user reputation score of the transaction according to the electricity consumption time information and the user current reputation value information, the method further includes:
inquiring current point balance information of the charging pile in a block chain account book according to the number of the charging pile;
and calculating new charging pile point balance information according to the transaction consumption integral value and the current charging pile point balance information, and writing the new charging pile point balance information into a block chain account book.
In a second aspect, an embodiment of the present invention provides an electric vehicle charging transaction apparatus, including:
the query module is used for acquiring the electricity utilization time information and the user number information, and querying the current credit value and the user point balance information of the user in the block chain account book according to the user number information;
the calculation module is used for determining the consumption integral value of the transaction and the user credit score of the transaction according to the power consumption time information and the current credit value information of the user;
and the transaction module is used for obtaining the current point balance information of the user according to the point balance information of the user and the consumption integral value of the transaction, and writing the current point balance information of the user and the credit score of the transaction into a block chain account book.
In a third aspect, an embodiment of the present invention provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor executes the computer program to implement the steps of the electric vehicle charging transaction method according to the first aspect.
In a fourth aspect, an embodiment of the present invention provides a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the electric vehicle charging transaction method according to the first aspect.
According to the electric vehicle charging transaction method and device provided by the embodiment of the invention, the account of the block chain charging transaction is designed, and the electric power point is used for replacing a token to circulate funds, so that the transaction information can be effectively prevented from being falsified, meanwhile, the traceability of each charging transaction is ensured, a user credit mechanism is designed, and a service fee calculation model based on the user credit degree is designed, so that the credit transaction is facilitated, the behavior of low-credit users is attacked, and the healthy operation of a charging transaction market is maintained.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a diagram illustrating a network architecture of an electric vehicle transaction model according to an embodiment of the present invention;
FIG. 2 is a block chain charging model transaction flow diagram according to an embodiment of the invention;
FIG. 3 is a flow chart illustrating an electric vehicle charging transaction method according to an embodiment of the invention;
Fig. 4 is a simulation diagram illustrating an influence of an endorsement experience value M on a charging service evaluation according to an embodiment of the present invention;
fig. 5 is a schematic diagram illustrating a simulation of an impact of a service quality on a charging service evaluation according to an embodiment of the present invention;
fig. 6 is a simulation diagram illustrating an influence of the user reputation Rv on the charging service evaluation according to an embodiment of the present invention;
fig. 7 is a simulation diagram illustrating an influence of the user reputation Rv on the charging service evaluation according to another embodiment of the present invention;
FIG. 8 is a diagram illustrating a service billing simulation based on user reputation according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of an electric vehicle charging transaction apparatus according to an embodiment of the invention;
fig. 10 is a schematic structural diagram of an electronic device according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The electric vehicle charging transaction method is built based on alliance blockchain HyperLegend Fabric, and therefore is a typical Fabric network structure, fig. 1 is a network structure diagram of an electric vehicle transaction model described in an embodiment of the invention, and as shown in fig. 1, the electric vehicle charging transaction method is composed of a charging transaction application program, charging pile nodes of charging operators, a sequencing service node and a charging transaction platform identity management organization.
The channel is a private atomic broadcast channel divided and managed by the sequencing node, and information of the channel can be isolated, so that entities outside the channel cannot access the channel, and the transaction security is realized.
The charging transaction application, i.e., the client node, sends the user's transaction request to the blockchain network by connecting to the Peer node or the sequencing service node. Each charging operator company has a plurality of Peer nodes, and each node stores an intelligent contract. All Peer nodes are accounting nodes (Commit peers) responsible for maintaining blockchain ledger copies. And part of Peer nodes execute transactions and sign endorsements on the results according to the setting of the endorsement policy, and play the role of an endorsement node (Endorse Peer). In order to improve the communication efficiency of the nodes, the nodes also serve as master nodes (Leader Peer) to communicate with the sequencing service node and are responsible for acquiring the latest blocks from the sequencing service node and synchronizing the blocks in the organization. One Peer node can simultaneously act as a master node, an endorsement node and an accounting node. The sequencing service node is responsible for sequencing the transactions, receives legal transactions containing endorsement signatures, performs global sequencing, packages the sequenced transactions into blocks and broadcasts the blocks to the Peer nodes.
The charging transaction platform identity management organization plays a role of a Membership Service Provider (MSP) and provides authorization service for nodes of a charging operator and charging transaction application programs.
The blockchain system is a decentralized design, so data consistency must be maintained by voting (minority-majority compliant), any voting requires three processes: proposal-vote and statistics-record and publish the proposal with most consent. Fig. 2 is a block chain charging model transaction flow diagram described in an embodiment of the present invention, as shown in fig. 2, a charging transaction application program initiates a proposal of a transaction to an endorsement node in a channel, the endorsement node receiving the proposal calls and simulates an execution intelligent contract after verifying the identity of a client (at this time, transaction information is not written into an account book), and then an execution result and respective certificate signatures are returned to the client. And after receiving a sufficient number of results, the charging transaction application program counts and summarizes the execution results of each endorsement node, and sends the obtained most agreed proposal signatures to the sequencing service node. The sequencing service node sequences the transactions sent by the clients (if the transaction sequence of the clients is uncertain, double payment problems may exist), packages the transactions into blocks and sends the blocks to the accounting node, and after the respective verification result of each accounting node is correct, records the blocks into the account book of the respective accounting node. Finally, the charge transaction application receives notification of the success of the transaction through a subscription event.
Fig. 3 is a schematic flow chart of an electric vehicle charging transaction method according to an embodiment of the invention, as shown in fig. 3, including:
step S1, acquiring power utilization time information and user number information, and inquiring the current credit value and user point balance information of a user in a block chain account book according to the user number information;
step S2, determining the consumption integral value of the transaction and the user credit score of the transaction according to the power consumption time information and the current credit value information of the user;
step S3, obtaining the current point balance information of the user according to the point balance information of the user and the consumed point value of the transaction, and writing the current point balance information of the user and the credit score of the transaction into a block chain account book.
Specifically, the electric vehicle charging transaction method described in the embodiment of the present invention uses electric power points instead of tokens to perform the flow of fund flow on an electric vehicle charging transaction platform based on a block chain technology. The user can buy, use and redeem power points: when the points are insufficient, the points can be purchased from a power supplier or other nodes, and the redundant points can be converted into electricity charges.
The current credit value of the user described in the embodiment of the invention is that the user evaluates the credit of the user according to the transaction behavior after completing the charging transaction of the electric vehicle every time, and the user pays in time to obtain a credit reward after the previous charging transaction, otherwise, the user deducts a credit. When the credit of the user is low, the user is limited not to check the service score of the charging pile; when the credit value is lower than the lowest credit threshold value R set by the platform minIt is restricted from using the charging service. The platform minimum credit threshold is set to 0.
In the embodiment of the invention, each charging is determined according to the time-sharing pricing system, and different electricity price coefficients exist for different credit degrees.
Specifically, the time-sharing pricing system described in the embodiment of the present invention may refer to a power grid time-sharing pricing system, that is, peak-valley electricity prices, and may respectively calculate a pricing system of electricity charges according to three peak, valley, and average sections, and each charging operator may specifically divide each time period according to the actual situation of the area, for example, 8 hours (10:00 to 15: 00; 18:00 to 21:00) in the peak section, 8 hours (23:00 to 7:00) in the valley section, and 8 hours (7:00 to 10: 00; 15:00 to 18: 00; 21:00 to 23:00) in the flat section.
Meanwhile, the embodiment of the invention also sets a service pricing mechanism associated with the user credit value, namely, the higher the credit value, the lower the price of the service fee to be paid by the user, and conversely, the higher the service fee is borne. The mechanism is beneficial to promoting the low-credit user to pay in time after the charging transaction is completed so as to improve the credit value and maintain the stable operation of the platform.
After the charging is completed, the step of transaction settlement is executed according to the intelligent contract to obtain the charging Starting time tstartAnd an end time tendDividing the time-of-use electricity price into k time periods, determining the consumption integral value of the transaction and the user credit score of the transaction according to the electricity time information and the current credit value information of the user, and updating the user credit score of the transaction to be 0 if the balance of the user after payment is less than 0; otherwise, the credit score of the user in the transaction is 1, the credit score of the user in the transaction is used for updating the credit value of the user, and when the credit value of the owner is not more than 0, the charging service cannot be used.
And writing the current point balance information of the user and the user credit score of the transaction into a block chain account book.
According to the embodiment of the invention, by designing the account of the block chain charging transaction and using the power point to replace a token to circulate funds, the tampering of transaction information can be effectively prevented, the traceability of each charging transaction is ensured, the user credit mechanism is designed, and the service fee calculation model based on the user credit degree is designed, so that the credit transaction is promoted, the behavior of low-credit users is attacked, and the healthy operation of the charging transaction market is maintained.
In addition to the above embodiment, the consumption credit value of the current transaction includes: the value of the charge consumption integral of the transaction and the value of the service integral of the transaction.
The step of determining the consumption integral value of the transaction according to the power utilization time information and the current reputation value information of the user specifically comprises the following steps:
acquiring a power utilization price coefficient according to the current credit value information of the user;
and determining a primary transaction consumption integral value according to the electricity utilization time information and the time-sharing pricing information, determining a current charging consumption integral value according to the electricity utilization price coefficient and the primary transaction consumption integral value, and determining a current transaction consumption integral value according to the current transaction charging consumption integral value.
Specifically, in the embodiment of the present invention, the preliminary transaction consumption integral value is an integral value of charging consumption calculated without considering the electricity consumption price coefficient, and the current charging consumption integral value is an integral value of rush hour consumption calculated with considering the electricity consumption price coefficient.
In the embodiment of the invention, the consumption integral value of the transaction is formed by a charging consumption integral value FcAnd service consumption integral value FsTwo parts are formed, and the formula is as follows:
Fc＝fc·(Eend-Estart)
Fs＝fs·(Eend-Estart)
Eendelectric quantity at the end of charging electric vehicle, EstartIs the initial charge. Due to time-of-use pricing, the total charging electric quantity is the sum of the product of the charging power and the charging time in each different electricity price time period, namely:
wherein P is the charging power of the electric automobile, t jK is the total time period number of the elapsed electricity prices of the charging time, which is the elapsed charging time in the current electricity price time period j. Charging with corresponding electricity price at different time intervals to obtain a primary transaction consumption integral value, and multiplying the primary transaction integral value by an electricity price coefficient to obtain a current charging consumption integral value FcAnd service consumption integral value FsThe calculation method is as follows:
in combination with a service charge ticket fsThe consumption point value F formula of the transaction is as follows:
the embodiment of the invention provides a power price adjusting mechanism, which is beneficial to eliminating peaks and filling valleys, reducing the loss of power equipment and promoting more reasonable charging behaviors of users.
On the basis of the above embodiment, after the step of obtaining the current point balance information of the user according to the point balance information of the user and the consumption point value of the transaction, the method further includes:
inquiring the current transaction times of the user in a block chain account book according to the user number information;
and calculating a new user credit value according to the current transaction times of the user, the current transaction consumption integral value and the current user credit value, and writing the new user credit value into a block chain account book.
Specifically, after the user completes the charging transaction of the electric vehicle each time, the credit evaluation Rv of the user is evaluated according to the transaction behavior, and the formula is as follows:
CvkIs the integral, C, obtained or deducted by user v at the completion of the kth charging servicevkIs taken to satisfy CvkE { -1, +1}, the user pays in time after the previous charging transaction to obtain a bonus point, otherwise, the user is deducted a bonus point. When the credit of the user is low, the user is limited not to check the service score of the charging pile; when the credit value is lower than the lowest credit threshold value R set by the platformminIt is restricted from using the charging service. The platform minimum credit threshold is set to 0.
By designing a user credit mechanism and a service fee calculation model based on the user credit degree, the embodiment of the invention is beneficial to promoting credit transaction, attacking low-credit user behaviors and maintaining the healthy operation of a charging transaction market;
on the basis of the above embodiment, after the step of obtaining the current point balance information of the user according to the point balance information of the user and the consumption point value of the transaction, the method further includes:
acquiring service score information of the transaction charging pile, and inquiring a charging pile endorsement experience value and a charging pile current service score in a block chain account book according to the charging pile number;
and calculating a new charging pile service score according to the charging pile service score information, the charging pile current service score, the charging pile endorsement experience value and the charging pile current service score of the transaction, and writing the new charging pile service score into a block chain account book.
Specifically, in order to encourage each charging service node to participate in endorsement during verification transaction and maintain stable operation of the blockchain charging transaction platform, an endorsement experience value should be incorporated into an evaluation system of the charging pile service. The endorsement experience value M is determined by the frequency of node participation in endorsement, and the calculation formula is as follows:
l is the number of times of updating the account book of the node serving as the endorsement node before, and L is the total number of times of updating the account book. To adjust the parameters of the endorsement experience value.
Charging pile service scoring information Rcs，nThe service evaluation of the charging pile is determined by scores and endorsement experience values given by users with different credit values along with the increase of the transaction times n, and meanwhile, the evaluation influence of initial low score on the service level improvement is considered, and the formula is as follows:
wherein R iscs，nFor the last charging service scoring information of the charging pile, the parameter alpha determines the speed of service scoring information change after each scoring, the node with lower scoring can not be influenced by the past low scoring all the time after the service is improved by adjusting the value of alpha, alpha is larger than 1, and the larger alpha is, the longer alpha is influenced by the past evaluation. M is the previously calculated endorsement experience value, WnAs a credit value of RvBy the user of (1), W in the platform nIs set to Wn∈{1，2，3，4，5}。EnFor the expected score expectation of the charging pile in the service,s (R) is a damping function that smoothes changes in the charging post service score. σ is a parameter in the damping function, the larger σ is, the gentler the damping function is, and the σ value is set to 0.8 in the system.
The embodiment of the invention provides a charging pile service evaluation mechanism, which considers the influence of node endorsement times, is beneficial to exciting nodes to participate in endorsement and maintaining the stable operation of a block chain transaction platform; meanwhile, the mechanism fully considers the influence of the reputation value of the user making the evaluation and the historical evaluation on the service score.
On the basis of the above embodiment, after the step of determining the consumption credit value of the current transaction and the user reputation score of the current transaction according to the power consumption time information and the user current reputation value information, the method further includes:
inquiring current point balance information of the charging pile in a block chain account book according to the number of the charging pile;
and calculating new charging pile point balance information according to the transaction consumption integral value and the current charging pile point balance information, and writing the new charging pile point balance information into a block chain account book.
In another embodiment of the present invention, after the charging is completed, the specific steps of the intelligent contract for executing the transaction settlement are as follows:
firstly, acquiring a number carID of the electric vehicle, a number stationID of a charging pile and charging power P;
acquiring data such as balance, credit value and the like of the vehicle owner and the charging pile through an account book query interface GetState ();
obtaining charging start time tstart and an end time tendDividing the time-of-use electricity price into k time periods;
fourthly, calculating the charging expense to be paid by the user by using the parameters of the charging power, the k time intervals, the corresponding electricity price and the like, deducting the corresponding amount in the balance of the vehicle owner and adding the amount to the balance of the charging pile;
if the user balance is less than 0 after payment, updating the current time C vj0; otherwise Cvj＝1，CvjFor the update of the reputation value of the user,when the owner reputation value is not greater than 0, the charging service will not be available.
Sixthly, new user balance and charging pile balance PutState () are sent to a block chain account book.
In another embodiment of the invention, a simulation experiment is carried out on the charging pile service evaluation model and the service charge calculation method based on the user credibility by using Python and matchlotlib libraries. The first simulation is carried out in three parts, and the endorsement experience value M, the user score W and the user credit value R are respectively observed through data of a simulation experiment vInfluence on the service scoring curve of the charging pile. To approximate the simulated data to the true case, a normal distribution N (μ, σ) is used2) The service scoring condition of the user on the charging pile is simulated, the expectation mu can roughly reflect the objective scoring condition under certain service quality, and the credit value R of the uservObeying a uniform distribution U (a, b); and the second simulation verifies the influence of the user credit on the service charge in the service charge charging model, and researches the influence of the parameters rho and theta on the credit and service charge relation so as to adapt to the fine tuning of the model under different conditions.
1. Simulation of charging pile service evaluation model
1) Influence of endorsement experience value M
And under certain service quality and user credit values, observing and analyzing the influence of the times of participating in the block chain charging transaction endorsement by the charging pile on the service evaluation. The user scores W in the three groups of data are all subjected to normal distribution N (4, 0.25), and the user reputation values RvThe uniform distribution U (0.6, 0.8) is obeyed, and the activity of the charging pile nodes participating in the transaction endorsement can be reflected by endorsement experience values M, which are respectively 0.1, 0.5 and 0.8.
The initial rating of the charging pile is 0, fig. 4 is a simulation diagram illustrating an influence of the endorsement experience value M on the charging service evaluation according to an embodiment of the present invention, as shown in fig. 4, after about 300 iterations of transaction rating, the service evaluation value of the charging pile is stabilized on an expected value μ -4 of a normal distribution of the user rating, which objectively reflects the service quality level thereof and meets expectations. It is easy to see that, under the same condition, the higher the endorsement experience value M is, the higher the service evaluation of the node is, the faster the stable scoring speed is reached, so that the contribution calculation capability of the charging pile node is facilitated to be stimulated, and the stable operation of the block chain charging transaction platform is maintained.
2) Impact of quality of service
The user score W obeys normal distribution, the user score condition under specific service quality can be approximately reflected, and the normal distributions with different expected values mu represent different service qualities provided by the charging pile. Under the same condition, the influence of the service quality provided by the charging pile on the service score is researched, the endorsement experience values M of the charging pile under three groups of data are all 0.2, and the user credit value RvThe charging service quality provided by the charging pile is represented by a user score W and is respectively subjected to normal distribution N (2.5, 0.25), N (3.5, 0.25) and N (4.5, 0.25). The initial value of the charging pile service evaluation is set to be a low score of 1.5, fig. 5 is a simulation diagram illustrating the influence of the service quality on the charging service evaluation according to an embodiment of the present invention, and as shown in fig. 5, after about 200 iterations of transaction scores, the charging pile service evaluation is stable and is stabilized on the respective distributed expected values μ. The service score of the user score obeying N (4.5, 0.25) is the highest, and finally stabilizes at 4.5 points, obeying N (3.5, 0.25) is the next to the lowest obeying N (2.5, 0.25). Therefore, the influence of low score before can be eliminated after the charging pile improves the service quality level of the model, and the higher the service quality is, the higher the final service evaluation is.
3) User reputation value RvInfluence of (2)
A good charging service evaluation model should consider the credibility of users, and the situations that users with low credibility may have random scores, intentional scores and the like, and the parameter R in the evaluation modelvThe influence of the user credit degree on the service score of the charging pile is reflected. Fig. 6 is a simulation diagram illustrating an influence of the user reputation Rv on the charging service evaluation according to an embodiment of the present invention, where as shown in fig. 6, the endorsement experience values of the charging piles under three groups of data are all 0.5, and are subject to normal distribution with user scores of N (4.5, 0.25), and the reputation values of the users are decreased in a stepwise manner and are subject to uniform distribution of U (0.2, 0.4), U (0.4, 0.6), and U (0.6, 0.8), respectively. As can be seen, the user credit obeys uniform scoringThe U (0.6, 0.8) distribution curve stabilizes around 300 transaction rating iterations, while the reputation stabilizes at a desired value after about 400 transaction rating iterations of U (0.4, 0.6), while the lowest user reputation value U (0.2, 0.4) remains unstable after 500 iterations.
Fig. 7 is a simulation diagram illustrating an influence of the user reputation Rv on the charging service evaluation according to another embodiment of the present invention, and as shown in fig. 7, the experiment is performed again, and the service evaluation of the curve is finally stabilized to a desired value of about 4.5 after 800 iterations. Therefore, the influence of the low-credit users on the service evaluation in the model is small, the influence of malicious evaluation on the service evaluation of the charging pile is reduced, the credit value of the users is improved, and the users can participate in the transaction evaluation better. 2. Service charging simulation based on user credit
The total charge in the model is the electric charge FcAnd a service fee FsForm, in which the service fee FsThe charging method can be determined by a blockchain charging transaction model, and users with low reputation may have behaviors of damaging charging piles, preempting charging piles and the like, so that the reputation value of the user should be considered by the charging model, and the equipment maintenance cost is considered to be increased along with the time of putting into use. FIG. 8 is a simulation diagram of a user reputation based service billing according to an embodiment of the present invention, as shown in FIG. 8, showing a service fee FsElectric charge FcThe ratio value changes with the user reputation value, and it can be seen that when the parameter is set to be θ 0.1 and ρ is 1, the ratio value decreases with the increase of the user reputation, which is beneficial to exciting the low-reputation user to reduce the service fee by increasing the reputation value; when theta is 0.1 and rho is 2, the service fee/electric fee ratio is reduced more quickly along with the increase of the credit, and the model can be finely adjusted according to the change of the price sensitivity of the user; when θ is 0.16 and ρ is 1, the ratio is increased compared to the initial case to accommodate the increase of the maintenance cost of the equipment.
Fig. 9 is a schematic diagram of an electric vehicle charging transaction apparatus according to an embodiment of the invention, as shown in fig. 9, including: query module 910, calculation module 920, and transaction module 930; the query module 910 is configured to obtain power consumption time information and user number information, and query a current reputation value and user point balance information of a user in a block chain account book according to the user number information; the calculating module 920 is configured to determine a consumption integral value of the current transaction and a user reputation score of the current transaction according to the power consumption time information and the current reputation value information of the user; the transaction module 930 is configured to obtain current credit balance information of the user according to the credit balance information of the user and the consumed credit value of the transaction, and write the current credit balance information of the user and the credit score of the transaction into a block chain account book.
The apparatus provided in the embodiment of the present invention is used for executing the above method embodiments, and for details of the process and the details, reference is made to the above embodiments, which are not described herein again.
According to the embodiment of the invention, by designing the account of the block chain charging transaction and using the power point to replace a token to circulate funds, the tampering of transaction information can be effectively prevented, the traceability of each charging transaction is ensured, the user credit mechanism is designed, and the service fee calculation model based on the user credit degree is designed, so that the credit transaction is promoted, the behavior of low-credit users is attacked, and the healthy operation of the charging transaction market is maintained.
Fig. 10 is a schematic structural diagram of an electronic device according to an embodiment of the present invention, and as shown in fig. 10, the electronic device may include: a processor (processor)1010, a communication Interface (Communications Interface)1020, a memory (memory)1030, and a communication bus 1040, wherein the processor 1010, the communication Interface 1020, and the memory 1030 communicate with each other via the communication bus 1040. Processor 1010 may call logic instructions in memory 1030 to perform the following method: acquiring power utilization time information and user number information, and inquiring current credit value and user point balance information of a user in a block chain account book according to the user number information; determining a consumption integral value of the transaction and a user credit score of the transaction according to the electricity utilization time information and the current credit value information of the user; and obtaining the current point balance information of the user according to the point balance information of the user and the consumption integral value of the transaction, and writing the current point balance information of the user and the credit score of the transaction into a block chain account book.
Furthermore, the logic instructions in the memory 1030 can be implemented in software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
An embodiment of the present invention discloses a computer program product, which includes a computer program stored on a non-transitory computer readable storage medium, the computer program including program instructions, when the program instructions are executed by a computer, the computer can execute the methods provided by the above method embodiments, for example, the method includes: acquiring power utilization time information and user number information, and inquiring current credit value and user point balance information of a user in a block chain account book according to the user number information; determining a consumption integral value of the transaction and a user credit score of the transaction according to the electricity utilization time information and the current credit value information of the user; and obtaining the current point balance information of the user according to the point balance information of the user and the consumption integral value of the transaction, and writing the current point balance information of the user and the credit score of the transaction into a block chain account book.
Embodiments of the present invention provide a non-transitory computer-readable storage medium storing server instructions, where the server instructions cause a computer to execute the method provided in the foregoing embodiments, for example, the method includes: acquiring power utilization time information and user number information, and inquiring current credit value and user point balance information of a user in a block chain account book according to the user number information; determining a consumption integral value of the transaction and a user credit score of the transaction according to the electricity utilization time information and the current credit value information of the user; and obtaining the current point balance information of the user according to the point balance information of the user and the consumption integral value of the transaction, and writing the current point balance information of the user and the credit score of the transaction into a block chain account book.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. An electric vehicle charging transaction method is characterized by comprising the following steps:
acquiring power utilization time information and user number information, and inquiring current credit value and user point balance information of a user in a block chain account book according to the user number information;
determining a consumption integral value of the transaction and a user credit score of the transaction according to the electricity utilization time information and the current credit value information of the user;
and obtaining the current point balance information of the user according to the point balance information of the user and the consumption integral value of the transaction, and writing the current point balance information of the user and the credit score of the transaction into a block chain account book.
2. The electric vehicle charging transaction method according to claim 1, wherein the consumption credit value of the current transaction comprises: the value of the charge consumption integral of the transaction and the value of the service integral of the transaction.
3. The electric vehicle charging transaction method according to claim 2, wherein the step of determining the consumption credit value of the transaction according to the power consumption time information and the user current credit value information specifically comprises:
acquiring a power utilization price coefficient according to the current credit value information of the user;
And determining a primary transaction consumption integral value according to the electricity utilization time information and the time-sharing pricing information, determining a current charging consumption integral value according to the electricity utilization price coefficient and the primary transaction consumption integral value, and determining a current transaction consumption integral value according to the current transaction charging consumption integral value.
4. The electric vehicle charging transaction method according to claim 1, wherein after the step of obtaining the current point balance information of the user according to the point balance information of the user and the consumption point value of the transaction, the method further comprises:
inquiring the current transaction times of the user in a block chain account book according to the user number information;
and calculating a new user credit value according to the current transaction times of the user, the current transaction consumption integral value and the current user credit value, and writing the new user credit value into a block chain account book.
5. The electric vehicle charging transaction method according to claim 1, wherein after the step of obtaining the current point balance information of the user according to the point balance information of the user and the consumption point value of the transaction, the method further comprises:
acquiring service score information of the transaction charging pile, and inquiring a charging pile endorsement experience value and a charging pile current service score in a block chain account book according to the charging pile number;
And calculating a new charging pile service score according to the charging pile service score information, the charging pile current service score, the charging pile endorsement experience value and the charging pile current service score of the transaction, and writing the new charging pile service score into a block chain account book.
6. The electric vehicle charging transaction method according to claim 5, wherein the step of querying the charging pile endorsement experience value in the blockchain account book according to the charging pile number specifically comprises the following steps:
acquiring the number of times of the charging pile serving as an endorsement node in a block chain account book according to the number of the charging pile;
and (4) carrying out quotient calculation on the number of times of the charging pile serving as the endorsement node and the total number of times of updating the account book to obtain the endorsement experience value of the charging pile.
7. The electric vehicle charging transaction method according to claim 1, wherein after the step of determining a consumption credit value of the transaction and a user reputation score of the transaction according to the power consumption time information and the user current reputation value information, the method further comprises:
inquiring current point balance information of the charging pile in a block chain account book according to the number of the charging pile;
and calculating new charging pile point balance information according to the transaction consumption integral value and the current charging pile point balance information, and writing the new charging pile point balance information into a block chain account book.
8. An electric vehicle charging transaction device, comprising:
the query module is used for acquiring the electricity utilization time information and the user number information, and querying the current credit value and the user point balance information of the user in the block chain account book according to the user number information;
the calculation module is used for determining the consumption integral value of the transaction and the user credit score of the transaction according to the power consumption time information and the current credit value information of the user;
and the transaction module is used for obtaining the current point balance information of the user according to the point balance information of the user and the consumption integral value of the transaction, and writing the current point balance information of the user and the credit score of the transaction into a block chain account book.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the program implements the steps of the method of electric vehicle charging transaction according to any of claims 1 to 7.
10. A non-transitory computer readable storage medium, having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the electric vehicle charging transaction method according to any one of claims 1 to 7.
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