CN116620096A - New energy automobile safety charging control method - Google Patents

New energy automobile safety charging control method Download PDF

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Publication number
CN116620096A
CN116620096A CN202310748923.4A CN202310748923A CN116620096A CN 116620096 A CN116620096 A CN 116620096A CN 202310748923 A CN202310748923 A CN 202310748923A CN 116620096 A CN116620096 A CN 116620096A
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China
Prior art keywords
charging
user
charging pile
cloud server
pile
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CN202310748923.4A
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Chinese (zh)
Inventor
陆琨
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Individual
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Individual
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Priority to CN202310748923.4A priority Critical patent/CN116620096A/en
Publication of CN116620096A publication Critical patent/CN116620096A/en
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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
    • B60L53/30—Constructional details of charging stations
    • B60L53/31—Charging columns specially adapted for electric vehicles
    • 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
    • B60L53/66—Data transfer between charging stations and vehicles
    • 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
    • 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
    • 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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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The application relates to the technical field of electrical control and discloses a new energy automobile safety charging control method. The application can avoid the use of the charging pile which exceeds the service life and is not overhauled by a user, ensures the charging safety of the user, reasonably arranges the charging pile in the charging station to work and provides convenience for the overhauling and maintenance in the later period.

Description

New energy automobile safety charging control method
Technical Field
The application relates to the technical field of electrical control, in particular to new energy automobile charging control, and more particularly relates to a new energy automobile safety charging control method.
Background
The new energy automobile is an automobile which adopts unconventional automobile fuel as a power source (or adopts conventional automobile fuel and a novel automobile-mounted power device) and integrates the advanced technology in the aspects of power control and driving of the automobile, and the formed technical principle is advanced, and the automobile has a new technology and a new structure. The new energy automobile mainly comprises a pure electric automobile, a range-extended electric automobile, a hybrid electric automobile, a fuel cell electric automobile, a hydrogen engine automobile and the like. The battery is used as an energy storage power source, and provides electric energy for the motor through the battery to drive the motor to run, so that the vehicle is driven to run.
The normal running of the electric automobile is not separated from the safe and efficient charging technology. At present, electric vehicles are usually charged by using charging piles, the charging piles are generally installed in parking lots or charging stations of public buildings and residential communities, and various types of electric vehicles can be charged according to different voltage levels. The input end of the charging pile is directly connected with an alternating current power grid, and the output end of the charging pile is provided with a charging plug for charging the electric automobile, so that the charging safety of the electric automobile is directly affected by the quality of the charging pile. At present, in order to improve the charging safety of an electric automobile, a structure of an improved charging pile is generally adopted, or the current or the temperature during charging is monitored to achieve the effect of safe charging. However, the service life of the charging pile is also one of key factors affecting the safe charging of the electric automobile, and the service life of the charging pile produced by different manufacturers is different. Therefore, from the consideration of the accumulated service life of the charging pile, in combination with the service life of the charging pile, it is necessary to actively provide the charging scheme for the user.
Disclosure of Invention
In order to solve the problems and the defects in the prior art, the application provides a new energy automobile safety charging control method. The application can avoid the use of the charging pile which exceeds the service life and is not overhauled by a user, ensures the charging safety of the user, reasonably arranges the charging pile in the charging station to work and provides convenience for the overhauling and maintenance in the later period.
In order to achieve the above object, the technical scheme of the present application is as follows:
a new energy automobile safety charging control method comprises the following steps:
the cloud server acquires the accumulated charging operation time of each charging pile in the charging station and sorts the accumulated charging operation time of each charging pile;
a user sends a charging inquiry request to a cloud server through a mobile terminal, and simultaneously sends real-time position information of the user and the current electric quantity of an automobile;
after receiving a charging inquiry request sent by a mobile terminal, the cloud server acquires the position information of a charging station near the position where the user is located and current traffic road condition data according to the real-time position information of the user;
the cloud server combines the real-time position information of the user, the current electric quantity of the automobile, the current traffic road condition data and the state of a charging pile in a charging station near the position of the user to generate a charging recommendation scheme and sends the charging recommendation scheme to the mobile terminal of the user;
the user receives the charging recommendation scheme transmitted by the cloud server through the mobile terminal, and selects whether to accept the charging recommendation scheme or not; if the user accepts the charging recommendation scheme, the mobile terminal sends reservation information to the cloud server, and the cloud server locks the recommended charging pile; if the user does not accept the charging recommendation scheme, the cloud server reprograms to generate a dispensing scheme and sends the dispensing scheme to the mobile terminal of the user.
Preferably, the charging recommendation scheme comprises a recommended charging station and a charging pile; the cloud server calculates the critical distance that the automobile can still travel according to the current electric quantity of the automobile, the recommended charging station is an idle charging pile in the station, the travel distance from the user to the recommended charging station is smaller than the critical distance that the automobile can still travel, and the time spent by the user to the charging station is shortest; the recommended charging peg is located in the recommended charging station, and the charging peg is in an idle state, does not exceed its service life and has a minimum accumulated charging operation duration.
Preferably, when the charging post in the charging station exceeds the service life, but has been serviced by the service, it can continue to be used, then the charging post can still be recommended to the user as a recommended charging post. At this time, when recommending the charging pile, the cloud server recommends according to the distance from the user, the idle state and the accumulated charging operation time length; when the service life of the charging pile in the charging station exceeds the service life, but the charging pile is not overhauled and maintained, the charging pile cannot be recommended to a user as a recommended charging pile, and the charging pile can be directly set to be in a non-idle state, so that the recommended effect cannot be achieved.
Preferably, after the user accepts the charging recommendation scheme, the cloud service automatically generates an optimal route from the user automobile to the recommended charging pile according to the real-time position information of the user and the position information of the recommended charging pile, and sends the optimal route to the mobile terminal of the user.
Preferably, after receiving a charging recommendation scheme, a user goes to a recommended charging station and drives to a position of a recommended charging pile, a camera at the position of the charging pile acquires a license plate image of an automobile and sends the image to a cloud server, and the cloud server identifies the current license plate number of the automobile according to license plate image information; if the currently identified license plate number is consistent with the license plate number of the reservation information sent by the user, the user can use the charging pile to charge; if the currently identified license plate number is inconsistent with the license plate number of the reservation information sent by the user, the charging pile cannot be used for charging, and a prompting and alarming module on the charging pile sends out an alarm to prompt the user.
Preferably, if the currently identified license plate number is consistent with the license plate number of the reservation information sent by the user, the charging gun on the charging pile is unlocked, and the user can charge the automobile by using the charging gun; if the currently identified license plate number is inconsistent with the license plate number of the reservation information sent by the user, the charging gun on the charging pile is still in a locking state, and the user cannot use the charging pile.
Preferably, the charging pile in the charging station is buried underground, and a lifting mechanism is arranged at the bottom of the charging pile; when the charging pile is in an idle state, the charging pile is positioned underground; when the charging pile is in a charging running state, the charging pile is lifted to the ground under the action of the bottom lifting mechanism.
Preferably, after the user travels to the recommended charging pile position, the infrared sensor at the charging pile position detects whether the parking position of the automobile has a problem; when judging that the parking position of the automobile is correct, the lifting mechanism acts to lift the charging pile positioned underground to the ground; when judging that the parking position of the automobile has a problem, the lifting mechanism does not act, the charging pile is still located underground, and the prompting and alarming module arranged on the road surface sends out an alarm to prompt a user.
Preferably, a signal acquisition module for acquiring a working signal of the charging pile is arranged on the charging pile in the charging station, when the charging pile starts working, the signal acquisition module sends a first detection signal to the cloud server, and after the charging pile finishes working, the signal acquisition module sends a second detection signal to the cloud server; the cloud server calculates the charging operation time length of the charging pile according to the first detection signal and the second detection signal, and updates the stored accumulated operation time length of the charging pile according to the charging operation time length.
Preferably, the method further comprises: establishing a davidian equivalent circuit model aiming at a storage battery of a new energy automobile, and performing model parameter fitting by using HPPC experimental data to finish modeling the storage battery of the new energy automobile, wherein a mathematical model of the storage battery meets the following relation:
U soc (t)＝U 0 (t)+R 0 i(t)+U c (t)；
U soc (t)＝F(SOC(t),T)；
wherein U is soc (t) represents an open circuit voltage of the battery; u (U) 0 (t) represents a terminal voltage of the battery; r is R 0 Representing ohmic resistance; i (t) represents the instantaneous current of the battery; u (U) c (t) represents the voltage across the polarization resistor; r is R 1 Representing the polarization resistance of the battery; c (C) 1 Representing battery polarization capacitance; f (SOC (T), T) represents a function of open circuit voltage, state of charge, and temperature of the battery;
further, it is possible to sort the above calculation expression:
and finally, the mathematical model expression of the new energy automobile battery is as follows:
and sampling and analyzing the charging voltage, the charging current, the terminal voltage of the storage battery and the temperature of the storage battery, adjusting the charging mode of the automobile through the processed current, voltage and temperature signals, controlling the charging current and the charging time, and finally completing the charging of the new energy automobile.
The application has the beneficial effects that:
(1) The application provides a safe charging control method of a new energy automobile, which is based on a charging inquiry request of a user, and simultaneously combines the accumulated use time of a charging pile according to a nearby principle according to real-time position information of the user to recommend an optimal charging pile for the user. The application can avoid users from using the charging piles which exceed the service life and are not overhauled, ensures the charging safety of the users, reasonably arranges the charging piles in the charging station to work, and provides convenience for the overhauling and maintenance in the later period.
(2) The method disclosed by the application can accurately acquire the accumulated running time of each charging pile in the charging station in real time, and actively recommend the optimal charging pile to a user based on the accumulated running time of each charging pile, so that the charging safety of the user can be ensured, meanwhile, the service time of each charging pile in the charging station can be reasonably planned, the service time of all the charging piles in one charging station is ensured to be balanced as much as possible, the service life of the charging piles can be prolonged in one time period, convenience is brought to overhaul and maintenance, frequent arrangement of operators to overhaul and maintain the charging piles exceeding the service life of the charging station is avoided, and the labor intensity of overhaul personnel can be lightened.
(3) When the vehicle is charged, special vehicle charging is realized based on a reservation system, namely, after a user receives a charging recommendation scheme of the cloud server, the cloud server can directly lock a recommended charging pile, after the user arrives in a designated charging station, license plate information of the user can be verified, and only when the license plate information of the current user is consistent with license plate numbers in reservation information, the cloud server can unlock the recommended charging pile, so that the user can charge by using the charging pile. Therefore, the situation that when a user catches up with the nearest charging pile to charge the electric automobile, the inquired idle charging pile is used by others can be avoided, at the moment, the user of the electric automobile has to search for other charging piles, or waits for the others to finish charging, so that the user spends long time searching for the available charging pile, and the charging experience of the user is poor.
(4) The charging pile is buried underground of the charging long station, when the charging pile is in an idle state, the whole charging pile is hidden below the ground, and when the charging pile is in a use state, the charging pile is located above the ground. Therefore, the problem that the charging pile may be knocked down when a user performs operations such as reversing in the station can be avoided.
(5) When a user drives to a position of the charging pile, after the vehicle is parked, the infrared sensor at the position of the charging pile can detect whether the parking position of the vehicle is correct, and if the parking position of the vehicle at the moment can conflict with the position of the charging pile after lifting, the user is warned to be reminded of adjusting the position of the vehicle, so that the collision between the vehicle and the charging pile is avoided.
Drawings
The foregoing and the following detailed description of the application will become more apparent when read in conjunction with the following drawings in which:
FIG. 1 is a flow chart of the method of the present application.
Detailed Description
In order for those skilled in the art to better understand the technical solution of the present application, the technical solution for achieving the object of the present application will be further described through several specific embodiments, and it should be noted that the technical solution claimed in the present application includes, but is not limited to, the following embodiments. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, based on the embodiments of the present application shall fall within the scope of protection of the present application.
The normal running of the electric automobile is not separated from the safe and efficient charging technology. At present, electric vehicles are usually charged by using charging piles, the charging piles are generally installed in parking lots or charging stations of public buildings and residential communities, and various types of electric vehicles can be charged according to different voltage levels. The input end of the charging pile is directly connected with an alternating current power grid, and the output end of the charging pile is provided with a charging plug for charging the electric automobile, so that the charging safety of the electric automobile is directly affected by the quality of the charging pile. At present, in order to improve the charging safety of an electric automobile, a structure of an improved charging pile is generally adopted, or the current or the temperature during charging is monitored to achieve the effect of safe charging. However, the service life of the charging pile is also one of key factors affecting the safe charging of the electric automobile, and the service life of the charging pile produced by different manufacturers is different. Therefore, from the consideration of the accumulated service life of the charging pile, in combination with the service life of the charging pile, it is necessary to actively provide the charging scheme for the user.
Based on the above, the embodiment of the application provides a new energy automobile safety charging control method, which is based on a charging inquiry request of a user, and simultaneously combines the accumulated use time of the charging piles according to the nearby principle according to the real-time position information of the user to recommend the optimal charging pile for the user. The application can avoid the use of the charging pile which exceeds the service life and is not overhauled by a user, ensures the charging safety of the user, can reasonably arrange the charging pile in the charging station to work, and provides convenience for the overhauling and maintenance in the later period.
The embodiment discloses a new energy automobile safety charging control method, which specifically comprises the following steps with reference to an attached figure 1 in the specification.
S1, the cloud server acquires accumulated charging operation time of each charging pile in the charging station, and sequences accumulated charging operation time of each charging pile.
In this embodiment, it may be understood that, similar to the current gas station, the charging station is provided with a plurality of charging piles within a certain space range, and after the user travels into the charging station, the user may select a corresponding charging pile to charge the electric vehicle.
In this embodiment, it should be noted that a signal acquisition module for acquiring a working signal of the charging pile is disposed on each charging pile in the charging station. When the charging pile starts to work, the signal acquisition module can acquire corresponding working signals and then send first detection signals to the cloud server, and the cloud server acquires current GPS time signals through GPS satellite signals after receiving the first detection signals, so that the moment when the current charging pile starts to work is obtained; after the charging pile finishes working, the signal acquisition module sends a second detection signal to the cloud server, and the cloud server also acquires a current GPS time signal through a GPS satellite signal, so as to obtain the moment when the current charging pile finishes working; and the cloud server obtains the charging operation time length of the current work of the charging pile through simple difference operation according to the time when the charging pile starts to work and the time when the charging pile ends to work, and finally updates the stored accumulated charging operation time length of the charging pile according to the current charging operation time length.
In this embodiment, it should be further noted that, based on the first detection signal and the second detection signal, the cloud server may also be capable of acquiring the idle state of the charging pile in real time. That is, after the cloud server receives the first detection signal, the charging pile is indicated to be in a working state of charging operation at the moment; when the cloud server receives the first detection signal and the second detection signal within a certain period of time, the charging pile is in an idle state, and no automobile is charged by using the charging pile. In this embodiment, the first detection signal and the second detection signal form a closed loop signal for detecting an operation state of the charging pile.
And S2, the user sends a charging inquiry request to the cloud server through the mobile terminal, and simultaneously sends the real-time position information of the user and the current electric quantity information of the automobile to the cloud server.
In this embodiment, it should be noted that the mobile terminal may be an intelligent terminal such as a mobile phone, a tablet computer or an intelligent watch of a user. The intelligent terminal is provided with a corresponding APP or applet, after a user logs in the APP or applet, the user sends a charging inquiry request to the cloud server, and the user is used for logging in the license plate number and other basic information of the user in the account number of the APP or applet.
And S3, after receiving a charging inquiry request sent by the mobile terminal, the cloud server acquires the position information of a charging station near the position where the user is located and current traffic condition data according to the real-time position information of the user.
In this embodiment, it may be understood that the cloud server may query specific location information of the charging station near the real-time location of the user and current traffic condition information through the GPS service. And after the cloud server acquires the position information of the charging stations near the position of the user, sequencing the positions of the charging stations according to the relation of distance from the vehicle of the user, and simultaneously calculating and sequencing the running time spent by the user driving to each charging station nearby by combining the current traffic condition information.
In this embodiment, it should be noted that, after a user initiates a charging inquiry request, the cloud server generates a corresponding charging recommendation scheme in combination with real-time location information of the user, current electric quantity of the vehicle, current traffic road condition data and a state of a charging pile in a charging station near a location where the user is located, and sends the scheme to a mobile terminal of the user.
And S4, the cloud server generates a charging recommendation scheme by combining the real-time position information of the user, the current electric quantity of the automobile, the current traffic road condition data and the state of a charging pile in a charging station near the position of the user, and sends the charging recommendation scheme to the mobile terminal of the user.
In this embodiment, after the cloud server obtains the current electric quantity of the automobile, the critical distance that the automobile can still travel is calculated according to the current electric quantity of the automobile.
In this embodiment, the charging recommendation scheme includes a recommended charging station and a charging pile; the recommended charging station needs to satisfy the following three conditions:
(1) The recommended charging station is internally provided with an idle charging pile;
(2) The travel distance from the user to the recommended charging station is less than the critical distance that the vehicle can also travel;
(3) The user spends the shortest time traveling to the charging station;
further, the recommended charging pile needs to satisfy the following four conditions:
(1) The recommended charging peg is located within the recommended charging station;
(2) The charging pile is in an idle state;
(3) The service life of the water heater is not longer than the service life;
(4) The accumulated charging operation time is the shortest.
In the present embodiment, the travel time taken for the user to travel to the charging station can be derived from the distance from the charging station and the current traffic condition information.
In this embodiment, it should be noted that, among three conditions that the charging station recommended by the cloud server needs to meet, firstly, it needs to meet that an idle charging pile exists in the charging station, secondly, a driving distance from the user to the recommended charging station is smaller than a critical distance that the vehicle can also drive, and finally, a time taken for the user to drive to the recommended charging station is the shortest.
In this embodiment, it should be further noted that, among the four conditions that the recommended charging pile satisfies, the recommended charging pile is located in the recommended charging station first, then needs to satisfy that the recommended charging pile is in an idle state, then does not exceed the service life of the charging pile, and finally, the accumulated charging operation duration is the shortest.
In this embodiment, it should be further explained that, in the cloud server generating the charging recommendation scheme, if the free charging pile in the current charging station exceeds the service life, but the charging pile is inspected and maintained, and it is confirmed that the charging pile can be used continuously, the charging pile can be continuously recommended to the user as the recommended charging pile. At this time, when the charging pile is recommended, the accumulated charging operation time of the charging pile is still used as a recommendation basis and principle to complete the recommendation of the charging pile. When the service life of the charging pile in the charging station exceeds the service life, but the charging pile is not overhauled and maintained, the charging pile cannot be recommended to a user as a recommended charging pile, and the charging pile can be directly set to be in a non-idle state, so that the recommended effect cannot be achieved.
In this embodiment, if the charging stations are screened according to the above three conditions, and then the charging station satisfying the conditions cannot be found, the cloud server directly recommends the charging station, which is closest to the user, as the recommended charging station, when the travel distance from the user to the charging station is within the critical distance of the vehicle. The user may need to wait for a period of time to charge after reaching the charging station, but it can avoid situations where the vehicle is not yet charged before the charge is exhausted.
S5, the user receives a charging recommendation scheme transmitted by the cloud server through the mobile terminal, and whether the charging recommendation scheme is accepted or not is selected; if the user accepts the charging recommendation scheme, the mobile terminal sends reservation information to the cloud server, and the cloud server locks the recommended charging pile; if the user does not accept the charging recommendation scheme, the cloud server reprograms to generate a dispensing scheme and sends the dispensing scheme to the mobile terminal of the user.
In this embodiment, it should be noted that, the reservation information sent by the user through the mobile terminal includes information such as a license plate number of the user, and the cloud server locks the recommended charging pile immediately after receiving the reservation information from the mobile terminal of the user, so that the charging pile is reserved in advance by the user on the surface, and only the corresponding reserved user can use the charging pile. The method realizes special vehicle charging based on the reservation system, can avoid that when a user catches up to the nearest charging pile to charge the electric vehicle, the inquired idle charging pile is found to be used by others, and at the moment, the user of the electric vehicle has to search for other charging piles or waits for the other people to finish charging, so that the user spends long time searching for the available charging pile, and the charging experience of the user is poor.
In some embodiments, it may be understood that by setting a switch lock structure on the charging pile, the charging gun on the charging pile can be locked, so as to achieve the effect of locking the charging pile, and only the user who sends the reservation information to the cloud server can use the corresponding reserved charging pile. The switch lock structure can be an electromagnetic lock structure, a local controller is arranged on the charging pile and is respectively connected with the cloud server and the electromagnetic lock structure, after the cloud server receives reservation information, a signal is sent to the local controller, the local controller controls the electromagnetic lock to be electrified, and a charging gun on the charging pile is locked; when the local controller controls the electromagnetic lock to be powered off, the electromagnetic lock is opened, and a user can normally use the charging pile.
In some embodiments, it may be understood that after the reservation information is generated and the cloud server locks the charging pile, if the user does not use the charging pile within a specified time, it indicates that the user gives up the current charging request, the cloud server issues an unlocking signal to a local controller of the locked charging pile, the local controller performs unlocking on the charging pile, the charging pile enters an idle state, and meanwhile, the cloud server also sends information that the current charging request ends to a mobile terminal of the user.
Further, considering that unexpected emergencies may occur in the process that the user drives to the reserved charging pile, when the user does not use the charging pile in a designated time, after the cloud server sends the information of ending the charging request to the mobile terminal of the user, if the user clicks a confirmation option, the reserved charging service ends, the local controller unlocks the charging pile, and the charging pile enters an idle state; and if the user clicks the negative option, the cloud server automatically prolongs the appointed time. It should be noted that, in order to improve the service efficiency of the charging pile, each user may only have one or two opportunities to extend the designated time in one charging request process.
In this embodiment, when the cloud server generates the adjustment scheme, the cloud server selects and screens charging stations that satisfy the first condition and the second condition, selects, from remaining charging stations, a charging station that takes a second shortest time for the user to travel to the charging station as the recommended charging station after discharging the charging stations in the recommended scheme, and so on. When the cloud server generates a dispensing scheme, if the running distance of the user to the currently selected charging station exceeds the critical distance, the cloud server pops up a window to prompt the user, and the cloud server recommends the previous dispensing scheme to the user again.
In this embodiment, it is further described that after the user accepts the charging recommendation scheme of the cloud server, the cloud server also automatically generates an optimal travel route from the user automobile to the recommended charging pile according to the real-time position information of the user and the position information of the recommended charging pile, and sends the optimal travel route to the mobile terminal of the user, so that the effect of real-time navigation is achieved, and better charging use experience is provided for the user.
According to the method, based on a charging inquiry request of a user, according to real-time position information of the user, the accumulated use time of the charging piles is combined at the same time according to a nearby principle, and the optimal charging piles are recommended for the user. The application can avoid users from using the charging piles which are longer than the service life and are not overhauled, ensure the charging safety of the users, reasonably arrange the charging piles in the charging station to work, provide convenience for the overhauling and maintenance in the later period, avoid frequent arrangement of workers to go to and from the charging station to overhaul and maintain the charging piles which are longer than the service life, and reduce the labor intensity of the overhauling workers.
Example 2
The embodiment discloses a new energy automobile safety charging control method, and based on the embodiment 1, the embodiment specifically describes and introduces the use of a charging pile based on reservation information of a user, and the specific description is as follows.
And after the user receives the charging recommendation scheme pushed by the cloud server, the user goes to a recommended charging station and travels to the recommended charging pile position. The parking area department that every fills electric pile corresponds is provided with electronic equipment that has a function of shooing such as camera, and after the parking of vehicle was in the parking area that fills electric pile corresponds, the camera of this position was shot the license plate of vehicle, sends the image of shooing to cloud server through local controller, and cloud server discerns the license plate number of current vehicle based on image recognition technique according to license plate image information, judges whether to be the reservation user according to the license plate number of current vehicle to decide whether the user can use this fills electric pile, specific process is as follows:
if the license plate number currently identified by the cloud server is consistent with the license plate number in the reservation information sent by the user, the user of the current vehicle is indicated to be the reservation user, and the user can charge the electric automobile by using the charging pile based on the sent reservation information. The cloud server sends an unlocking signal to a local controller of the charging pile, the local controller controls a charging gun on the charging pile to unlock, and a user uses the charging gun to charge the automobile;
if the license plate number currently identified by the cloud server is inconsistent with the license plate number of the reservation information sent by the user, the user of the current vehicle is not reserved for charging, the user cannot use the charging pile to charge, the charging gun on the charging pile is still in a locking state, and meanwhile, the local controller controls the prompting alarm module on the charging pile to send out an alarm to prompt the user, so that the user drives away from the charging pile.
Example 3
The embodiment discloses a new energy automobile safety charge control method, and this embodiment has made further improvement on the basis of embodiment 2, and the difference between them is mainly that in this embodiment, the electric pile that fills in the charging station buries under ground, and the bottom of electric pile is provided with elevating system, and this elevating system is used for realizing charging pile up-and-down reciprocating motion in vertical plane, and then realizes hiding and release of charging pile. When the charging pile is in an idle state, the charging station is positioned below the ground; when the charging pile is in a charging running state, the charging pile is lifted to the ground under the action of the bottom lifting mechanism, so that a user can charge the charging pile. Because the position of the charging pile in this embodiment is different from that in embodiment 2, when the user drives to travel to the recommended position of the charging pile, the parking position of the vehicle is also determined, so as to avoid the collision between the vehicle and the charging pile, which is specifically as follows:
and an infrared sensor is further arranged at the parking area corresponding to each charging pile, and the infrared sensor detects whether the parking position of the automobile has a problem or not after a user runs to the parking area at the position of the recommended charging pile. When judging that the parking position of the automobile is correct, the infrared sensor sends a signal to the cloud server through the local controller, the cloud server receives the signal and then sends the signal like the local controller of the charging pile, the local controller controls the lifting mechanism to act, and the charging pile is lifted to the ground under the action of the bottom lifting mechanism; when judging that the parking position of the automobile has a problem, the local controller controls the prompt alarm module to give an alarm to prompt a user, and the user needs to readjust the position of the automobile until the parking position of the automobile is correct, the lifting mechanism can act, and the charging pile is lifted above the ground for the user to use.
In some embodiments, it is understood that the lifting mechanism may be a hydraulic cylinder, an air cylinder, or the like, having a telescoping function.
In this embodiment, it should be noted that whether the parking position of the automobile has a problem refers to whether the parking position of the automobile collides with the lifting process of the charging pile at this time, for example, a part of the body structure of the automobile is located above the charging pile, and the charging pile collides with the automobile in the lifting process, so that an unnecessary safety accident is caused.
In this embodiment, it is also noted that the subsequent parking position determination process is performed only if the identified current license plate number matches with the reservation information, and the reservation condition is satisfied.
In this embodiment, it should be further described that, since the charging pile is buried below the ground in this embodiment, the user cannot use the charging pile as long as the charging pile is not lifted above the ground. Therefore, when the charging pile of the embodiment is in the idle state, the state corresponds to the locked state, so that the structure such as an electromagnetic lock and the like can be not additionally arranged for locking the charging gun on the charging pile.
Example 4
The embodiment discloses a new energy automobile safety charging control method, on the basis of the embodiment, the method further comprises the following steps: when the new energy automobile is charged, charging voltage, charging current, terminal voltage of the storage battery and temperature of the storage battery are collected in real time, the charging mode of the automobile is adjusted through processed current, voltage and temperature signals, the charging current and time are controlled, and finally charging of the new energy automobile is completed. The method comprises the following steps:
firstly, a davidian equivalent circuit model is established for a storage battery of a new energy automobile, model parameter fitting is carried out by utilizing HPPC experimental data to complete modeling of the storage battery of the new energy automobile, and the mathematical model of the storage battery meets the following relation:
U soc (t)＝U 0 (t)+R 0 i(t)+U c (t)；
U soc (t)＝F(SOC(t),T)；
wherein U is soc (t) represents an open circuit voltage of the battery; u (U) 0 (t) represents a terminal voltage of the battery; r is R 0 Representing ohmic resistance; i (t) represents the instantaneous current of the battery; u (U) c (t) represents the voltage across the polarization resistor; r is R 1 Representing the polarization resistance of the battery; c (C) 1 Representing battery polarization capacitance; f (SOC (T), T) represents a function of open circuit voltage, state of charge, and temperature of the battery;
further, it is possible to sort the above calculation expression:
and finally, the mathematical model expression of the new energy automobile battery is as follows:
and sampling and analyzing the charging voltage, the charging current, the terminal voltage of the storage battery and the temperature of the storage battery, adjusting the charging mode of the automobile through the processed current, voltage and temperature signals, controlling the charging current and the charging time, and finally completing the charging of the new energy automobile. For example, the three charging modes of constant current, pulse and low constant voltage can be combined to charge the storage battery of the automobile, so that the charging time can be effectively reduced, and the charging efficiency is further improved.
Further, during the charging process of the storage battery, if the battery is still charged after being fully charged, the temperature of the battery is rapidly increased, and meanwhile, the terminal voltage of the storage battery is also reduced. Therefore, in order to ensure that the battery can be fully charged but cannot be overcharged, the application adopts a mode of combining temperature control or voltage negative increment control to control the storage battery to stop charging in time, that is to say, when the temperature of the storage battery reaches a set value or the terminal voltage of the storage battery is negatively increased, the charging pile automatically cuts off the power supply to stop charging the storage battery of the automobile.
In this embodiment, it should be noted that the polarization resistance and polarization capacitance of the battery may be obtained by performing parameter fitting on the Curvefittingtool fitting toolbox of Matlab through HPPC working condition data.
In this embodiment, it is also noted that the open-circuit voltage may be obtained by quantitatively discharging and then allowing to stand for a long period of time; r0 is the ohmic internal resistance of the battery, and can be obtained by dividing the voltage difference before and after pulse current loading by the loading current; the open circuit voltage of the battery, the state of charge of the battery and the temperature of the battery can be obtained by using a polynomial fitting mode.
The foregoing description is only a preferred embodiment of the present application and is not intended to limit the application in any way, but any simple modification, equivalent variation, etc. of the above embodiment according to the technical substance of the present application falls within the scope of the present application.

Claims (10)

1. The safe charging control method for the new energy automobile is characterized by comprising the following steps of:
the cloud server acquires the accumulated charging operation time of each charging pile in the charging station and sorts the accumulated charging operation time of each charging pile;
a user sends a charging inquiry request to a cloud server through a mobile terminal, and simultaneously sends real-time position information of the user and the current electric quantity of an automobile;
after receiving a charging inquiry request sent by a mobile terminal, the cloud server acquires the position information of a charging station near the position where the user is located and current traffic road condition data according to the real-time position information of the user;
the cloud server combines the real-time position information of the user, the current electric quantity of the automobile, the current traffic road condition data and the state of a charging pile in a charging station near the position of the user to generate a charging recommendation scheme and sends the charging recommendation scheme to the mobile terminal of the user; the charging recommendation scheme comprises a recommended charging station and a charging pile.
The user receives the charging recommendation scheme transmitted by the cloud server through the mobile terminal, and selects whether to accept the charging recommendation scheme or not; if the user accepts the charging recommendation scheme, the mobile terminal sends reservation information to the cloud server, and the cloud server locks the recommended charging pile; if the user does not accept the charging recommendation scheme, the cloud server reprograms to generate a dispensing scheme and sends the dispensing scheme to the mobile terminal of the user.
2. The method for controlling safe charging of an energy vehicle according to claim 1, wherein the cloud server calculates a critical distance that the vehicle can travel according to a current electric quantity of the vehicle, the recommended charging station is a charging pile which is idle in a station, a distance from a user to the recommended charging station is smaller than the critical distance that the vehicle can travel, and a time taken for the user to travel to the charging station is the shortest; the recommended charging peg is located in the recommended charging station, and the recommended charging peg is in an idle state, and meanwhile, the service life of the recommended charging peg is not exceeded, and the accumulated charging operation time is the shortest.
3. The method for controlling safe charging of a new energy vehicle according to claim 2, wherein when the charging pile in the charging station exceeds the service life, but has undergone repair and maintenance, the charging pile can continue to be recommended to the user as the recommended charging pile.
4. The method for controlling safe charging of a new energy automobile according to claim 1, wherein after the user receives the charging recommendation scheme, the cloud server automatically generates an optimal route from the user automobile to the recommended charging pile according to the real-time position information of the user and the position information of the recommended charging pile, and sends the optimal route to the mobile terminal of the user.
5. The method for controlling safe charging of a new energy automobile according to claim 1, further comprising: after receiving a charging recommendation scheme, a user goes to a recommended charging station and runs to the position of a recommended charging pile, a camera at the position of the charging pile acquires a license plate image of an automobile and sends the image to a cloud server, and the cloud server identifies the current license plate number of the automobile according to license plate image information; if the currently identified license plate number is consistent with the license plate number of the reservation information sent by the user, the user can use the charging pile to charge; if the currently identified license plate number is inconsistent with the license plate number of the reservation information sent by the user, the charging pile cannot be used for charging, and a prompting and alarming module on the charging pile sends out an alarm to prompt the user.
6. The method for controlling safe charging of a new energy automobile according to claim 5, wherein if the currently identified license plate number is consistent with the license plate number of the reservation information sent by the user, the charging gun on the charging pile is unlocked, and the user can charge the automobile by using the charging gun; if the currently identified license plate number is inconsistent with the license plate number of the reservation information sent by the user, the charging gun on the charging pile is in a locking state, and the user cannot use the charging pile.
7. The method for controlling safe charging of a new energy automobile according to claim 5, wherein the charging pile in the charging station is buried underground, and a lifting mechanism is arranged at the bottom of the charging pile; when the charging pile is in an idle state, the charging pile is positioned underground; when the charging pile is in a charging running state, the charging pile is lifted to the ground under the action of the bottom lifting mechanism.
8. The method for controlling safe charging of a new energy automobile according to claim 7, further comprising: after a user runs to the recommended charging pile position, detecting whether a problem exists in the parking position of the automobile by an infrared sensor at the charging pile position; when judging that the parking position of the automobile is correct, the lifting mechanism acts, and the charging pile is lifted to the ground under the action of the bottom lifting mechanism; when judging that the parking position of the automobile has a problem, the lifting mechanism does not participate in lifting, the charging pile is still located underground, and meanwhile the prompt alarm module sends out an alarm to prompt a user.
9. The method for controlling safe charging of a new energy automobile according to claim 1, wherein a charging pile in the charging station is provided with a signal acquisition module for acquiring a working signal of the charging pile, when the charging pile starts to work, the signal acquisition module sends a first detection signal to the cloud server, and after the charging pile finishes working, the signal acquisition module sends a second detection signal to the cloud server; the cloud server calculates the charging operation time length of the charging pile according to the first detection signal and the second detection signal, and updates the stored accumulated operation time length of the charging pile according to the charging operation time length.
10. The method for controlling safe charging of a new energy automobile according to claim 1, further comprising:
establishing a davidian equivalent circuit model aiming at a storage battery of a new energy automobile, and performing model parameter fitting by using HPPC experimental data to finish modeling the storage battery of the new energy automobile, wherein a mathematical model of the storage battery meets the following relation:
U soc (t)＝U 0 (t)+R 0 i(t)+U c (t)；
U soc (t)＝F(SOC(t),T)；
wherein U is soc (t) represents an open circuit voltage of the battery; u (U) 0 (t) represents a terminal voltage of the battery; r is R 0 Representing ohmic resistance; i (t) represents the instantaneous current of the battery; u (U) c (t) represents the voltage across the polarization resistor; r is R 1 Representing the polarization resistance of the battery; c (C) 1 Representing battery polarization capacitance; f (SOC (T), T) represents a function of open circuit voltage, state of charge, and temperature of the battery;
further, it is possible to sort the above calculation expression:
and finally, the mathematical model expression of the new energy automobile battery is as follows:
and sampling and analyzing the charging voltage, the charging current, the terminal voltage of the storage battery and the temperature of the storage battery, adjusting the charging mode of the automobile through the processed current, voltage and temperature signals, controlling the charging current and the charging time, and finally completing the charging of the new energy automobile.
CN202310748923.4A 2023-06-25 2023-06-25 New energy automobile safety charging control method Pending CN116620096A (en)

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