CN112309051A - Off-line electricity changing method and system based on secret key - Google Patents
Off-line electricity changing method and system based on secret key Download PDFInfo
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- CN112309051A CN112309051A CN202011034771.4A CN202011034771A CN112309051A CN 112309051 A CN112309051 A CN 112309051A CN 202011034771 A CN202011034771 A CN 202011034771A CN 112309051 A CN112309051 A CN 112309051A
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000005611 electricity Effects 0.000 title description 2
- 238000012508 change request Methods 0.000 claims description 3
- 238000004590 computer program Methods 0.000 claims description 3
- 230000003993 interaction Effects 0.000 abstract description 6
- 230000006855 networking Effects 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000008571 general function Effects 0.000 description 1
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F17/00—Coin-freed apparatus for hiring articles; Coin-freed facilities or services
- G07F17/0042—Coin-freed apparatus for hiring articles; Coin-freed facilities or services for hiring of objects
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/68—Off-site monitoring or control, e.g. remote control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/80—Exchanging energy storage elements, e.g. removable batteries
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
- H04L9/0618—Block ciphers, i.e. encrypting groups of characters of a plain text message using fixed encryption transformation
- H04L9/0631—Substitution permutation network [SPN], i.e. cipher composed of a number of stages or rounds each involving linear and nonlinear transformations, e.g. AES algorithms
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0891—Revocation or update of secret information, e.g. encryption key update or rekeying
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0894—Escrow, recovery or storing of secret information, e.g. secret key escrow or cryptographic key storage
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
- Y02T90/167—Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S30/00—Systems supporting specific end-user applications in the sector of transportation
- Y04S30/10—Systems supporting the interoperability of electric or hybrid vehicles
- Y04S30/12—Remote or cooperative charging
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/20—Information technology specific aspects, e.g. CAD, simulation, modelling, system security
Abstract
The invention relates to an offline battery replacement method and system based on a secret key, which are applied to a battery charging and replacement cabinet system and comprise the following steps: acquiring the network state of the current battery charging and replacing cabinet system; judging whether the battery charging and replacing cabinet system is in an off-line state currently or not according to the network state; if yes, performing offline battery replacement based on a prestored secret key; if not, updating and storing the pre-stored key. According to the invention, when the battery charging and replacing cabinet system is in an off-line state, off-line battery replacement can be carried out based on the pre-stored secret key, repeated networking and screen input are not required in the battery replacing process of a user, the operation is simple, the information interaction between the battery charging and replacing cabinet and the background server is encrypted, the safety is high, the reliability is good, the user can directly receive and forward the information, the operation is convenient, a special connecting device is not required, and the stability is good.
Description
Technical Field
The invention relates to the technical field of battery swapping, in particular to an offline battery swapping method and system based on a secret key.
Background
The electric vehicle charging and battery replacing cabinet is in an off-line state, and still needs to be communicated with a remote terminal and perform information interaction in order to ensure the safety of the charging and battery replacing cabinet. The current common schemes are:
firstly, a Bluetooth scheme: the Bluetooth module of the cabinet body is connected with the user mobile terminal, and then information interaction is carried out between the user mobile terminal and the background server. This scheme needs user mobile terminal's APP to have the function of receiving and retransmitting the bluetooth data, and can't directly receive and retransmit through user mobile terminal's general function module, and convenience and stability are relatively poor.
II, clear text code scanning scheme: the information interaction between the cabinet body and the user mobile terminal is realized in a code scanning mode (the code is scanned manually or input manually once in each information interaction), and then the background server information is sent or received through the user mobile terminal. This scheme needs the user to scan the sign indicating number or screen input manually many times, and the operation is got up relatively loaded down with trivial details, and the security is low moreover.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide an offline power swapping method and system based on a secret key, aiming at the above defects in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: an offline battery replacement method based on a secret key is constructed, is applied to a battery charging and replacement system, and comprises the following steps:
acquiring the network state of the current battery charging and replacing cabinet system;
judging whether the battery charging and replacing cabinet system is in an off-line state currently or not according to the network state;
if yes, performing offline battery replacement based on a prestored secret key;
if not, updating and storing the pre-stored key.
Preferably, if yes, performing offline power swapping based on a pre-stored key includes:
judging whether the battery charging and replacing cabinet system meets a battery replacing condition;
and if so, performing offline battery replacement based on the pre-stored secret key.
Preferably, the determining whether the battery charging and replacing cabinet system meets the battery replacing condition includes:
judging whether an empty bin and a replaceable battery exist in the battery charging and replacing cabinet system;
if yes, judging that the battery charging and replacing cabinet system meets the battery replacing condition;
if not, judging that the battery charging and replacing cabinet system meets the battery replacing condition.
Preferably, the determining whether there is an empty bin and a replaceable battery in the battery charging and replacing cabinet system comprises:
judging whether an offline power change request is received;
if yes, executing: and judging whether an empty bin and a replaceable battery exist in the battery charging and replacing cabinet system.
Preferably, if yes, performing offline power swapping based on the pre-stored key includes:
if the battery charging and replacing cabinet system meets the battery replacing condition, outputting a control signal to control the bin door of the battery bin of the empty bin to be opened;
judging whether the battery compartment with the compartment door opened is closed or not;
if yes, the battery charging and replacing cabinet system generates an offline label based on the pre-stored secret key;
and executing offline battery replacement according to the offline label.
Preferably, the performing offline power swapping according to the offline tag includes:
reading and identifying the offline label through an intelligent terminal to obtain label information of the offline label;
sending the label information to a background server;
the background server decrypts the label information and sends a battery swapping ciphertext to the intelligent terminal;
the intelligent terminal receives and displays the battery swapping ciphertext;
the battery charging and swapping cabinet system judges whether a battery swapping ciphertext input by a user is received;
if yes, judging whether the battery replacement is allowed according to the battery replacement ciphertext;
if the battery replacement is allowed, outputting a control signal to control the bin gate of the battery bin corresponding to the battery replacement ciphertext to be opened;
and if the battery replacement is not allowed, outputting and displaying battery replacement failure information.
Preferably, the offline tag comprises:
the ID number of the charging and replacing cabinet where the charging and replacing cabinet system is located, the ID number of an empty battery placed into the empty bin by a user and the ID number of a replaceable battery.
Preferably, the acquiring the network state of the current battery charging and replacing cabinet system comprises:
and receiving a pre-stored secret key issued by the background server and storing the pre-stored secret key to the local.
Preferably, the offline tag comprises: a bar code or a two-dimensional code.
The invention also provides an offline power swapping system based on a secret key, which comprises a processor, wherein the processor is used for realizing the steps of the method when executing the computer program stored in the memory.
The off-line power swapping method and the off-line power swapping system based on the secret key have the following beneficial effects that: be applied to and fill among trading battery case system, include: acquiring the network state of the current battery charging and replacing cabinet system; judging whether the battery charging and replacing cabinet system is in an off-line state currently or not according to the network state; if yes, performing offline battery replacement based on a prestored secret key; if not, updating and storing the pre-stored key. According to the invention, when the battery charging and replacing cabinet system is in an off-line state, off-line battery replacement can be carried out based on the pre-stored secret key, repeated networking and screen input are not required in the battery replacing process of a user, the operation is simple, the information interaction between the battery charging and replacing cabinet and the background server is encrypted, the safety is high, the reliability is good, the user can directly receive and forward the information, the operation is convenient, a special connecting device is not required, and the stability is good.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
fig. 1 is a schematic flowchart of an offline power swapping method based on a secret key according to an embodiment of the present invention;
fig. 2 is a detailed flowchart of the offline power swapping method based on the key according to the embodiment of the present invention.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a schematic flow chart of an optional embodiment of each embodiment of the offline power swapping method based on the secret key provided by the present invention. The offline battery replacement method based on the secret key can be applied to a battery charging and replacement cabinet system.
Specifically, as shown in fig. 1, the offline power swapping method based on the key may include:
and S101, acquiring the network state of the current battery charging and replacing cabinet system.
Before obtaining the network state of the current battery charging and swapping cabinet system, the method comprises the following steps: and receiving a pre-stored secret key issued by the background server and storing the pre-stored secret key to the local. Specifically, when the battery charging and replacing cabinet system is in an online state, the battery charging and replacing cabinet system can directly communicate with the background server, receive a key (where the key may be an AES-128 key, generally 16bytes) issued by the background server, and store the received key to the local to form a pre-stored key. Optionally, the key issued by the background server may be updated at regular time, and the keys of different devices (battery charging and replacing cabinets) or different areas may be different or the same in the same time period.
When the charging and battery replacing cabinet is in an online state, the secret key is stored to the local in advance, so that the battery replacing service can be rapidly and simply completed when the charging and battery replacing cabinet is in an offline state.
And S102, judging whether the battery charging and swapping cabinet system is in an off-line state currently or not according to the network state.
And S103, if yes, performing offline battery replacement based on the pre-stored secret key.
Specifically, step S103 may include: judging whether the battery charging and replacing cabinet system meets the battery replacing condition; and if so, performing offline battery replacement based on the prestored secret key.
Wherein, judging whether the battery charging and replacing cabinet system meets the battery replacing condition comprises: judging whether an empty bin and a replaceable battery exist in the battery charging and replacing cabinet system; if yes, judging that the battery charging and replacing cabinet system meets the battery replacing condition; if not, the battery charging and replacing cabinet system is judged to meet the battery replacing conditions.
Further, before judging whether there is an empty bin and a replaceable battery in the battery charging and replacing cabinet system, the method includes: judging whether an offline power change request is received; if yes, executing: and judging whether an empty bin and a replaceable battery exist in the battery charging and replacing cabinet system. When the charging and replacing cabinet system is in an off-line state, if a user selects an off-line charging request on an operation interface of the charging and replacing cabinet, the user can judge that the off-line charging request is received, at the moment, the charging and replacing cabinet system can continue to execute the next action, and otherwise, the charging and replacing cabinet system does not act.
Further, in some embodiments, if yes, performing offline power swapping based on the pre-stored key includes: if the battery charging and replacing cabinet system meets the battery replacing condition, outputting a control signal to control the bin door of the battery bin of the empty bin to be opened; judging whether the battery compartment with the compartment door opened is closed or not; if yes, the battery charging and replacing cabinet system generates an offline label based on a prestored secret key; and performing offline battery replacement according to the offline label. Specifically, if the battery charging and replacing cabinet system judges that the battery charging and replacing cabinet currently has an empty bin and a replaceable battery, the battery charging and replacing cabinet system outputs a control signal to control a bin door of a battery bin of the empty bin to be opened, after the bin door of the battery bin of the empty bin is opened, a user puts an empty battery (i.e., a battery to be charged) into the battery bin and closes the bin door, and meanwhile, the battery charging and replacing cabinet system automatically detects whether the opened bin door is closed again, if so, the battery charging and replacing cabinet system generates an offline label based on a pre-stored key existing locally, and offline battery replacement is executed according to the generated offline label.
In the embodiment of the present invention, the offline tag generated by the battery charging and replacing cabinet system based on the pre-stored key includes, but is not limited to, information such as an ID number of the battery charging and replacing cabinet where the battery charging and replacing cabinet system is located, an ID number of an empty battery placed in an empty battery compartment by a user, and an ID number of a replaceable battery. Specifically, the battery charging and replacing system encrypts information such as the ID number of the battery charging and replacing cabinet, the ID number of an empty battery placed in the empty bin, and the ID number of a replaceable battery through a pre-stored key to generate an offline label, and outputs the generated offline label to an operation interface of the battery charging and replacing system for a user to check and read. Alternatively, the offline label may include, but is not limited to, a bar code or a two-dimensional code.
Further, performing offline power swapping according to the offline label includes:
reading and identifying the offline label through the intelligent terminal to obtain label information of the offline label;
sending the label information to a background server;
the background server decrypts the tag information and sends a battery swapping ciphertext to the intelligent terminal;
the intelligent terminal receives and displays the battery replacement ciphertext;
the battery charging and swapping cabinet system judges whether a battery swapping ciphertext input by a user is received;
if yes, judging whether the battery replacement is allowed according to the battery replacement ciphertext;
if the battery replacement is allowed, outputting a control signal to control the bin gate of the battery bin corresponding to the battery replacement ciphertext to be opened;
and if the battery replacement is not allowed, outputting and displaying battery replacement failure information.
And step S104, if not, updating and storing the pre-stored key.
Specifically, in a preferred embodiment, an off-line tag is taken as an example of a two-dimensional code for explanation.
As shown in fig. 2, the offline power swapping method based on the key may specifically include the following steps:
s201, judging whether the battery charging and replacing cabinet system is in an off-line state according to the current network state;
s202, if yes, judging whether an offline battery changing request selected by a user on an operation interface of a battery charging and changing cabinet is received;
s203, if an offline power conversion request is received, judging whether an empty bin and a replaceable battery exist in the current charging and converting cabinet;
s204, if an empty bin and a replaceable battery exist, outputting a control signal to open a bin door of the battery bin of the empty bin; and if no empty bin or replaceable battery exists, outputting the empty bin-free or replaceable battery-free operation interface to display so as to prompt the user.
S205, judging whether a user closes a bin door of the opened battery bin;
and S206, if so, encrypting the information of the ID number of the battery to be charged, the ID number of the charging and replacing cabinet, the ID number of the replaceable battery and the like by the charging and replacing cabinet system through a prestored secret key to obtain a corresponding ciphertext, generating the obtained ciphertext into a two-dimensional code, and outputting the generated two-dimensional code to an operation interface of the charging and replacing cabinet system for display.
S207, the user scans the two-dimensional code on the operation interface through the intelligent terminal (including but not limited to a mobile phone, a PAD and the like), the ciphertext in the two-dimensional code is obtained, and the obtained ciphertext is sent to the background server.
S208, the background server decrypts the ciphertext uploaded by the intelligent terminal, generates a corresponding battery swapping ciphertext based on the uploaded ciphertext and returns the battery swapping ciphertext to the intelligent terminal;
and S209, the intelligent terminal receives the returned battery swapping cipher text and then displays the battery swapping cipher text, the user inputs the received battery swapping cipher text into the battery charging and swapping cabinet system through the operation interface, and the battery charging and swapping cabinet system executes an offline battery swapping operation according to the input battery swapping cipher text.
And the battery replacement ciphertext comprises a battery replacement permission ciphertext or a battery replacement non-permission ciphertext, wherein when the background server judges that the battery replacement is permitted according to the density uploaded by the intelligent terminal, the battery code which can be used for the battery replacement is bound again to generate the battery replacement permission ciphertext, otherwise, the battery replacement non-permission ciphertext is generated. After receiving a battery replacement ciphertext input by a user, the battery charging and replacing system decrypts the battery replacement ciphertext, and if the battery replacement ciphertext is the battery replacement permission ciphertext, the battery charging and replacing system outputs a control signal to control a bin gate of a fully charged battery bin to be opened (for the user to take) according to the battery replacement permission ciphertext; and if the battery swapping ciphertext is not allowed, the battery swapping failure information output by the battery swapping cabinet system is displayed on the operation interface to remind the user.
Further, the battery swapping ciphertext generated by the background server is encrypted by the pre-stored key and then returned to the intelligent terminal.
Further, as shown in fig. 2, if the offline battery replacement request is received, corresponding information is output to the operation interface to prompt the user when it is determined that the battery charging and replacing cabinet is empty and the replaceable battery is available.
Further, the present invention also provides an offline power swapping system based on a secret key, wherein the offline power swapping system may include a processor, and the processor is configured to implement the steps of the offline power swapping method based on a secret key disclosed in the embodiments of the present invention when executing the computer program stored in the memory.
The invention can be applied to the charging and replacing cabinets of two-wheeled and three-wheeled electric vehicles, and can be applied to the situation that the charging and replacing can not be remotely networked (namely, in an off-line state), how a user communicates with the charging and replacing cabinet background server through a mobile phone or other mobile terminals which can be networked, thereby achieving the purpose of obtaining, replacing or returning batteries. The invention can communicate with the background server of the battery charging and replacing system through the user networking in the offline state of the battery charging and replacing system, and the user networking process only needs one code scanning and one screen input at most, thereby having simple and rapid operation and high efficiency. In addition, the secret key issued by the background server to the charging and switching cabinet is not limited in use times and can be updated regularly, and the interactive message between the charging and switching cabinet and the background server is encrypted, so that the method is safe and reliable.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.
Claims (10)
1. An offline battery replacement method based on a secret key is applied to a battery charging and replacement cabinet system, and is characterized by comprising the following steps:
acquiring the network state of the current battery charging and replacing cabinet system;
judging whether the battery charging and replacing cabinet system is in an off-line state currently or not according to the network state;
if yes, performing offline battery replacement based on a prestored secret key;
if not, updating and storing the pre-stored key.
2. The offline power swapping method based on the secret key of claim 1, wherein if yes, performing offline power swapping based on a pre-stored secret key comprises:
judging whether the battery charging and replacing cabinet system meets a battery replacing condition;
and if so, performing offline battery replacement based on the pre-stored secret key.
3. The offline power swapping method based on the secret key of claim 2, wherein the determining whether the power charging and swapping cabinet system meets the power swapping condition comprises:
judging whether an empty bin and a replaceable battery exist in the battery charging and replacing cabinet system;
if yes, judging that the battery charging and replacing cabinet system meets the battery replacing condition;
if not, judging that the battery charging and replacing cabinet system meets the battery replacing condition.
4. The offline power swapping method based on the secret key of claim 3, wherein the determining whether there is an empty bin and a replaceable battery in the power charging and swapping cabinet system comprises:
judging whether an offline power change request is received;
if yes, executing: and judging whether an empty bin and a replaceable battery exist in the battery charging and replacing cabinet system.
5. The offline power swapping method based on the secret key of claim 2, wherein if the offline power swapping is performed based on the pre-stored secret key, the offline power swapping comprises:
if the battery charging and replacing cabinet system meets the battery replacing condition, outputting a control signal to control the bin door of the battery bin of the empty bin to be opened;
judging whether the battery compartment with the compartment door opened is closed or not;
if yes, the battery charging and replacing cabinet system generates an offline label based on the pre-stored secret key;
and executing offline battery replacement according to the offline label.
6. The offline power swapping method based on the key of claim 5, wherein the performing offline power swapping according to the offline label comprises:
reading and identifying the offline label through an intelligent terminal to obtain label information of the offline label;
sending the label information to a background server;
the background server decrypts the label information and sends a battery swapping ciphertext to the intelligent terminal;
the intelligent terminal receives and displays the battery swapping ciphertext;
the battery charging and swapping cabinet system judges whether a battery swapping ciphertext input by a user is received;
if yes, judging whether the battery replacement is allowed according to the battery replacement ciphertext;
if the battery replacement is allowed, outputting a control signal to control the bin gate of the battery bin corresponding to the battery replacement ciphertext to be opened;
and if the battery replacement is not allowed, outputting and displaying battery replacement failure information.
7. The offline power swapping method based on the key of claim 5, wherein the offline tag comprises:
the ID number of the charging and replacing cabinet where the charging and replacing cabinet system is located, the ID number of an empty battery placed into the empty bin by a user and the ID number of a replaceable battery.
8. The offline power swapping method based on the secret key of claim 1, wherein the obtaining the network state of the current power charging and swapping cabinet system comprises:
and receiving a pre-stored secret key issued by the background server and storing the pre-stored secret key to the local.
9. The offline power swapping method based on the key of claim 5, wherein the offline tag comprises: a bar code or a two-dimensional code.
10. A key-based offline power swapping system, comprising a processor for implementing the steps of the method of any one of claims 1-9 when executing a computer program stored in a memory.
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Application publication date: 20210202 |