CN114548677A - New energy automobile battery sharing model method based on block chain - Google Patents
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Abstract
The invention discloses a new energy automobile battery sharing model method based on a block chain, and relates to the technical field of block chain finance. S1, the new energy automobile battery is certified, and the method comprises the following steps: s1‑1The credit portrait of the user is drawn on the basis of the credit pool, S1‑2The SM2 elliptic curve digital signature algorithm is used in the battery circulation process to sign and verify each transaction, the authenticity of data is guaranteed, and the system uses the fog server and S1‑3For battery saturation query, every user can query every battery using condition at any time, S1‑4At the charging pile node, providing services for replacing batteries, charging the batteries and returning the batteries to the factory for users; s2, charging the user, with battery saturation as the measurement standardThe value of the battery is reduced. The invention has the beneficial effects that: the mature battery replacement sharing method is provided, and the industrialization of the new energy automobile replacement mode is facilitated.
Description
Technical Field
The invention mainly relates to the technical field of block chain finance, in particular to a new energy automobile battery sharing model method based on a block chain.
Background
In the face of environmental problems and energy problems caused by the development of the automobile industry, the development of new energy automobiles becomes a consensus of the international society, and the development of the new energy automobiles drives the continuous development of the industry chain of the industry. In the industry today, there are two main development modes for powering electric vehicles: one is a charging mode, and the other is a battery replacement mode.
The charging mode has been developed to a certain extent, has the time of charging long, fills the electric pile parking stall and leads to the problem that the queuing latency is long, trades the mode and compares more save time, but current mode of trading is in the groping stage basically, does not have more mature technical scheme, and the management is chaotic, has restricted the industrialization development of trading the mode.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a new energy automobile battery sharing model method based on a block chain, which provides a mature battery replacement sharing method and is convenient for the new energy automobile battery replacement mode to form industrialization.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a new energy automobile battery sharing model method based on a block chain comprises the following steps:
s1, the new energy automobile battery is certified, and the method comprises the following steps:
S1-1the credit portrait of the user is characterized in the aspect of credit based on a credit pool, and the credit portrait of the user comprises the following steps:
(2.1) Credit tag creation based on data mining. The credit label of the credit subject is created by extracting the significant features of the credit subject and performing dimensionality reduction understanding on the complex credit condition of the credit subject. The novel credit evaluation is based on massive credit big data, static data and dynamic data classification is carried out on credit information through methods such as text analysis, rule induction and the like, a credit main body label extraction mechanism is constructed based on technologies such as data mining and the like, and therefore a credit label set containing contents such as basic attributes, behavior preference, economic consumption, interests and hobbies of a credit main body is created.
And (2.2) credit data analysis based on big data technology. The nature of the big data "credit portrait" is to mathematically model the credit status of the credit principal. The novel credit evaluation is based on credit label classification, label weights are automatically defined through technologies such as big data deep mining and the like, a dynamic distribution model of credit label index weights based on automatic iteration and machine learning algorithms is formulated, and credit subject credit scores based on the credit labels and the index weights are obtained.
And (2.3) depicting a credit portrait based on data visualization. Visual representation of credit labels and scores of credit subjects based on data visualization techniques is a direct representation of a credit portrait. The novel social evaluation comprehensively shows the credit status of the credit subject in the forms of static charts, three-dimensional animations, dynamic videos and the like through technologies such as graphic image processing, computer vision, user interfaces and the like.
The novel social credit system gives full play to the value of credit big data, realizes the dominance of the recessive characteristics of credit subjects by deeply mining the credit conditions of the credit subjects such as basic attributes, consumption concepts, behavior preferences, living habits and the like, thereby describing the credit portrait of the credit subjects in a multidimensional way, laying a foundation for realizing the accurate utilization of comprehensive social credit, and the process is novel credit evaluation and is called credit rating in the traditional social credit system. The novel credit evaluation is based on credit big data covering the whole society, various fields, interconnection and open sharing, highly refined summary is carried out on credit characteristics of a credit subject in a labeling mode through classification processing of mass credit data, then the label is cleaned and extracted through technologies such as big data mining, and the like, and finally the credit subject is obtained
"Credit portrait". Credit applications are a value-oriented for social credit mechanisms. In the intelligent society, the wide coverage of credit big data, the innovation of credit products, the expansion of credit application scenes and the deepening of credit concepts promote social credit to become an important tool for reinforcing and innovating social governance and completing socialist market economy by multiple main bodies of governments, enterprises, the public and the like, and the credit has important effects on reinforcing government market supervision, promoting digital economy development, providing convenience and enterprise services for people and the like.
S1-2The battery circulation process uses SM2 elliptic curve digital signature algorithm, signs and checks every transaction, ensures data authenticity, and this system uses the fog server simultaneously, because fog calculation has several obvious characteristics: the method has the advantages of low time delay, location awareness, wide geographical distribution, adaptability to the application of mobility and support of more edge nodes. These characteristics make mobile service deployment more convenient, can satisfy more extensive node access. Compared with cloud computing, the architecture adopted by the fog computing is more distributed and closer to the edge of the network. Fog computing concentrates data, data processing, and applications in devices at the edge of the network, rather than keeping them almost entirely in the cloud as in cloud computing. The storage and processing of data is more dependent on the local device than the server. Therefore, cloud computing is a new generation of centralized computing, while fog computing is a new generation of distributed computing, consistent with the "decentralized" features of the internet. Thus, the present system employs a fog calculation server. The fog computing server has enough storage space to provide data storage, software and hardware such as corresponding infrastructure and computing equipment do not need to be purchased, management cost is reduced, and meanwhile, the safety of shared data is guaranteed.
S1-3For the inquiry of the battery saturation, each user can inquire the service condition of each battery at any time, the block chain technology has the inherent traceability function, and after the digital signature is used, each transaction is public and transparent and can ensure the authenticity, each user can inquire the service condition of each battery at any time, the charge management of the user is clearer,
S1-4at the charging pile node, providing services for replacing batteries, charging the batteries and returning the batteries to the factory for users;
s2, charging the user, and quantifying the value of the battery by taking the battery saturation as a measurement standard, comprising the following steps:
S2-1and at the charging pile node, replacing the battery for the user, charging the replaced battery, and scrapping the battery with the saturation of 0 or with a fault. The user needs to be charged in the transaction of battery replacement, wherein the charging comprises two aspects, namely the saturation difference of two batteries and the charge required by the charging pile for fully charging the batteries;
S2-2the failed battery also exists in the system in a general evidence form, and has certain value; the transaction form is as step S2-1As shown, the spent battery can be streamed between the user, the charging pile and the battery manufacturer.
Step S1-2The elliptic cryptosystem parameters in (1) are as follows:
(1) setting private key d of user AA∈[1，n-1]And the public key P of user AA＝[dA]G＝(xA，yA)；
(2) Selecting a cipher hash algorithm, setting as Hv (), and then, the cipher hash algorithm is a cipher hash function with the shining length of V bits;
(3) selecting a random number generator;
(4) user A signs, signer A has length entlenABit distinguishable identification IDANote ENTLAIs an integer entlenATwo bytes converted, in the elliptic curve digital signature algorithm, a signer and a verification both need to use a cryptographic hash functionNumerically obtaining a hash value Z of the user AA＝ H256(ENTLA||IDA||a||b||xG||yG||xA||yA)。
The battery recycling time in step S2 is M times, the battery cost is L yuan, the battery has been used n times, M yuan is spent for charging once, y yuan is spent for vehicle owner to replace the battery, and the user needs to spend fee to replace the battery
Wherein n is1Is the number of battery uses, n, before the owner of the vehicle changes2Is the number of battery uses after the vehicle owner changes.
The password hash algorithm is an SM3 algorithm issued by the national password administration. The random number generator is a random number generator approved by the national password administration, and the signature needs to be verified or the signature needs to be verified when the entity interacts with the entity.
Compared with the prior art, the invention has the beneficial effects that:
by the method provided by the invention, a brand-new full-charge battery can be replaced for an electric vehicle only in 3-5 minutes in one battery replacement station. In addition, the battery replacement can reduce the vehicle purchasing cost in a vehicle-electricity separation mode. Meanwhile, the problems that charging piles in old communities are difficult to install and parking spaces are few are solved, the waiting time of car owners is shortened, and further development of new energy automobiles is facilitated.
Drawings
FIG. 1 is a system architecture diagram of the present invention;
FIG. 2 is a flow chart of the system implementation of the present invention.
Detailed Description
The invention is further described with reference to the accompanying drawings and specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it will be appreciated that various changes or modifications may be made by those skilled in the art after reading the teachings herein, and such equivalents are intended to fall within the scope of the invention as defined in the claims.
As shown in fig. 1, the new energy vehicle battery sharing model based on the block chain of the invention is composed of 4 entities of a manufacturer, a certification authority, a consumer market and a charging pile. The method comprises the following steps:
in the aspect of a data layer, a data structure which is the same as that of a bit currency is adopted, the block structure comprises a block header and a transaction part, and the block header comprises data such as a previous block hash, a Mercury root, a time stamp and the like so as to ensure the authenticity and the non-tamper property of the data; the data storage adopts distributed storage, and multi-centralization is realized by means of a cloud platform. Because the data on the block chain is permanently recorded and cannot be tampered, the safety of all parties can be ensured, and meanwhile, the data can be quickly checked and verified anytime and anywhere; the management node grasps the current circulation situation at any time, the whole course tracing is certified, the responsibility is clear, the common identification node is responsible for confirming the transaction, and the non-common identification node can be stored in a light weight mode for transaction; the certification block chain realizes the cross-domain asset intercommunication of C2C, C2B and B2B by taking the block chain technology as a bottom layer. Therefore, the battery is made into a certification asset, so that better management can be realized;
in the aspect of a network layer, the transmission and verification functions are mainly realized, a C/S framework is adopted, and a user can quickly acquire all information of the battery through a client, including the information of a circulation node, saturation and battery electric quantity of the battery.
In the aspect of a consensus layer, a BFT consensus mechanism is adopted. The BFT consensus mechanism can guarantee good performance. It comprises three stages: firstly, the method comprises the following steps: broadcasting, by the master node, the request; II, secondly: each verifier signing and preparing a prepare message for the request, the verifier broadcasting a commit message; thirdly, the method comprises the following steps: when enough commit messages are received, the request is accepted.
In the aspect of a contract layer, the model can realize reasonable charge for users and full management on the whole life cycle of the battery, and simultaneously can guarantee the safety and stability of the system through the limitation on nodes.
In the application layer, the system is deployed.
Referring to fig. 2, the present invention includes the steps of:
step 1: when a manufacturer produces the battery, the digital signature of the manufacturer is added, the digital signature technology uses an SM2 elliptic curve digital signature algorithm, and the SM2 algorithm is a commercial digital signature standard officially published in China.
The signature process of the SM2 algorithm is as follows:
assuming that the message to be signed is M, in order to obtain the digital signature (r, s) of the message M, the user a as the signer should perform the following operation steps:
(1) device for placing
(2) Computing
And converting the data type of e into an integer;
(3) generating a random number k ∈ [1, n-1] by using a random number generator;
(4) calculating the point (x) of the elliptic curve1,y1)＝[k]G, and x1Converts the data type of (a) to an integer;
(5) calculating r ═ e + x1) modn, if r is 0 or r + k is n, returning to step (3);
(6) calculating s ═ 1+ dA)-1(k-rdA) Mod n, if s is 0, return to step (3);
(7) the data type of r, s is converted into byte string, and the signature of the message M is (r, s).
The verification process of the SM2 algorithm is as follows:
in order to verify the received message M ' and its digital signature (r ', s '), the user B as verifier should implement the following operational steps:
(1) checking whether r 'belongs to [1, n-1] or not, and if not, verifying that the r' does not pass;
(2) checking whether s' belongs to [1, n-1] or not, and if not, verifying not to pass;
(3) device for placing
(4) Computing
Representing the data of e' as an integer;
(5) converting the data of r 'and s' into integers, calculating t ═ r ', s') modn, and if t ═ 0, then the verification is failed;
(6) calculating the point (x) of the elliptic curve1',y1')＝[s']G+[t]PA；
(7) Converting the data of x into integer, and calculating R ═ e' + x1') modn, checking whether R ═ R' is true, and if true, verifying to pass; otherwise, the verification is not passed.
Step 2: after receiving the battery of the manufacturer, the certification authority firstly adds the digital signature of the certification authority and then carries out technical evaluation on the digital signature. If the battery product does not meet the conditions, directly carrying out scrapping treatment; if the battery meets the standard requirements, the battery can flow into the consumer market, such as vehicle owners, vehicle manufacturers, agents, charging posts and the like, wherein the consumer market takes the vehicle owners as an example.
And 3, step 3: after the battery is introduced into the consumer market, the consumer market takes the car owner as an example. As the system adopts the PBFT consensus mechanism, the credit portrait is firstly carried out on the vehicle owner, the credit degree of the whole customer is improved, and the stability of the system is ensured.
And 4, step 4: fill electric pile and provide the service, fill electric pile and can provide basic service such as change battery, for battery charging for the user, fill electric pile simultaneously and can look over the saturation information of battery, just so can solve the problem of how to charge, fill electric pile after accomplishing a transaction and add own digital signature in this transaction.
And 5: when the saturation of the battery is reduced to 0 or the battery is damaged and the safety is endangered, the battery is discarded. The rejection operations are handled uniformly by the battery manufacturer. Generally includes aspects where the battery is produced without passing certification by a certification mechanism; when the battery is damaged and the safety is jeopardized by improper use in the process of passing through; or when the battery saturation drops to 0. At this time, the battery needs to be discarded.
At the moment, the whole process forms a closed loop, and the management of the whole life cycle of the battery can be effectively realized.
Claims (4)
1. A new energy automobile battery sharing model method based on a block chain comprises the following steps:
s1, the new energy automobile battery is certified, and the method comprises the following steps:
S1-1the credit portrait of the user is described on the basis of the credit pool,
S1-2the battery circulation process uses an SM2 elliptic curve digital signature algorithm to sign and verify each transaction, the authenticity of data is guaranteed, and simultaneously the system uses a fog server,
S1-3for the inquiry of the battery saturation, each user can inquire the service condition of each battery at any time,
S1-4at the charging pile node, providing services for replacing batteries, charging the batteries and returning the batteries to the factory for users;
s2, charging the user, and quantifying the value of the battery by taking the battery saturation as a measurement standard, comprising the following steps:
S2-1and at the charging pile node, replacing the battery for the user, charging the replaced battery, and scrapping the battery with the saturation of 0 or with a fault. The user needs to be charged in the transaction of replacing the battery, wherein the charging comprises two aspects, namely the difference of the saturation degrees of the two batteries, the charge required by the charging pile for fully charging the battery,
S2-2the failed battery also exists in the system in a general evidence form, and has certain value; the transaction form is as step S2-1It is shown that the spent battery can be circulated between the user, the charging pile and the battery manufacturer.
2. The new energy automobile battery sharing model method based on the block chain as claimed in claim 1, characterized in that: step S1-2The elliptic cryptosystem parameters in (1) are as follows:
(1) setting private key d of user AA∈[1，n-1]And the public key P of user AA＝[dA]G＝(xA，yA)；
(2) Selecting a cipher hash algorithm, setting as Hv (), and then, the cipher hash algorithm is a cipher hash function with the shining length of V bits;
(3) selecting a random number generator;
(4) user A signs, signer A has length entlenABit distinguishable identification IDANote ENTLAIs an integer entlenATwo bytes are converted, in the elliptic curve digital signature algorithm, a signer and a verifier need to use a cipher hash function to obtain a hash value Z of the user AA＝H256(ENTLA||IDA||a||b||xG||yG||xA||yA)。
3. The new energy automobile battery sharing model method based on the block chain as claimed in claim 1, characterized in that: the battery recycling time in step S2 is M times, the battery cost is L yuan, the battery has been used n times, M yuan is needed for charging once, y yuan is needed for the vehicle owner to replace the battery, and y yuan is needed for the user to replace the battery
Element, wherein n1Is the number of battery uses, n, before the owner of the vehicle changes2Is the number of battery uses after the vehicle owner changes.
4. The new energy automobile battery sharing model method based on the block chain as claimed in claim 2, characterized in that: the password hash algorithm is an SM3 algorithm issued by the national password administration. The random number generator is a random number generator approved by the national password administration.
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