CN111993946B - Detection method and detection system for alternating current-direct current charging pile of electric automobile - Google Patents
Detection method and detection system for alternating current-direct current charging pile of electric automobile Download PDFInfo
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- CN111993946B CN111993946B CN202011170761.3A CN202011170761A CN111993946B CN 111993946 B CN111993946 B CN 111993946B CN 202011170761 A CN202011170761 A CN 202011170761A CN 111993946 B CN111993946 B CN 111993946B
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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
- B60L53/66—Data transfer between charging stations and vehicles
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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
- B60L53/10—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 characterised by the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
- B60L53/16—Connectors, e.g. plugs or sockets, specially adapted for charging 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
- B60L53/67—Controlling two or more charging stations
-
- 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
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
- G01C21/34—Route searching; Route guidance
- G01C21/3407—Route searching; Route guidance specially adapted for specific applications
- G01C21/343—Calculating itineraries, i.e. routes leading from a starting point to a series of categorical destinations using a global route restraint, round trips, touristic trips
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/26—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 specially adapted for navigation in a road network
- G01C21/34—Route searching; Route guidance
- G01C21/3453—Special cost functions, i.e. other than distance or default speed limit of road segments
- G01C21/3469—Fuel consumption; Energy use; Emission aspects
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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
-
- 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
- Y02T90/12—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
- Y02T90/14—Plug-in electric 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
- 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
Abstract
The invention discloses a detection method and a detection system for an electric automobile alternating current-direct current charging pile, wherein the detection system for the electric automobile alternating current-direct current charging pile comprises an alternating current-direct current charging pile identification device, a charging interface detection device, a vehicle-mounted map module, a vehicle-mounted computer, a charging inspection module, a BMS power management module, a charging interface control device, a path planning module and a communication device; the method comprises the following steps: acquiring the position of a travel destination charging pile, arriving at a selected charging station according to a planned path, setting the stay time, judging whether to use fast charging or slow charging, and connecting the charging pile for charging; after the charging pile is connected, the charging interface detection device firstly detects the tightness of the connection between the charging line interface and the vehicle charging interface, and if the tightness meets the requirement, the charging is carried out; and after the charging time reaches the set staying time, completing charging. The invention can help the owner to select the charging strategy and reduce the loss of the battery of the electric automobile.
Description
Technical Field
The invention relates to the field of electric vehicles, in particular to a detection method and a detection system for an alternating current-direct current charging pile of an electric vehicle.
Background
Charging infrastructure construction is one of key factors influencing the popularization of new energy vehicles in China, and the nation adopts a construction strategy that pile stations are moderately advanced. The development of the charging infrastructure in China aims to build 1.2 ten thousand seats of a centralized charging and replacing power station and 480 ten thousand scattered charging piles in 2020. However, the existing charging pile is not very dense, the charging time of the electric vehicle is greatly increased compared with the refueling time of a gasoline vehicle, even if a quick charging means is provided, the charging time is still long, and the quick charging has an influence on the service life of the battery, so that how to optimize the charging strategy of the electric vehicle according to the real-time state of the existing charging pile and the charging pile is a problem to be solved at present.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a detection method of an alternating current and direct current charging pile of an electric automobile, which comprises the following steps:
the method comprises the steps of firstly, acquiring the position of a travel destination charging pile, acquiring the position of a charging station on a map by taking a travel destination coordinate as a center according to map data of a vehicle-mounted map module, selecting the charging station with the shortest distance to the travel destination, and simultaneously acquiring the state information of charging piles in the charging station, wherein the state information comprises the number of idle charging piles, the number of fast-charging piles and slow-charging piles in the idle charging piles, and the average idle time of the charging piles in the charging station; judging whether the charging station is chargeable or not, and if the charging station meets the chargeable requirement, generating a path to the charging station by a path planning module; if the chargeable requirement is not met, sequentially selecting the charging stations from near to far according to the distance for judgment, and stopping the judgment until the distance to the charging stations exceeds the endurance mileage of the residual electric quantity of the vehicle;
if the remaining mileage of the vehicle cannot reach the charging station meeting the chargeable requirement, directly selecting the charging station closest to the position of the vehicle for charging;
the determination method for satisfying the chargeable requirement is as follows:
the remaining driving range S adopts the following formula:
therein
For the mileage traveled by the consumed electric power,
is the amount of power that has been consumed by the vehicle,
as the remaining amount of power of the vehicle,
is safe electric quantity;
obtaining the estimated arrival time according to the remaining driving mileage
Comprises the following steps:
therein
Average speed of mileage driven by consumed electric power;
average idle time of charging pile
Comprises the following steps:
therein
The number of the charging piles in the charging station;
for every fill electric pile this day idle time long sum, every fill electric pile idle time length and be: after charging piles start working in the charging station at the same day, all the charging piles start accumulating the idle time;
average idle time of idle charging pile
Comprises the following steps:
therein
Counting the number of the idle charging piles;
the sum of the idle time lengths of all the idle charging piles after the last charging is finished;
if it is
If so, the charging requirement is met, and the charging station is entered for charging;
if it is
If the charging requirement is not met, the charging station is reselected;
step two, according to the planned path, the selected charging station is reached, and the stay time is set
According to the vehicle residual electric quantity, the distance from the vehicle to the next destination and the distance from the charging station with the shortest distance with the next destination as the center, judging whether to select quick charging or slow charging, and simultaneously opening the protective cover of the corresponding charging interface by the charging interface control device to connect the charging pile for charging;
the judgment of selecting to use fast charging or slow charging comprises the following processes: obtaining the required electric quantity according to the vehicle residual electric quantity, the distance to the next destination and the distance of the charging station with the shortest distance taking the next destination as the center
：
If it is
Selecting slow charging; if it is
Selecting quick charging; if it is
Selecting quick charging; therein
In order to achieve the efficiency of the quick charge,
charging efficiency for slow charging; therein
In order to reach the distance to the next destination,
the distance of the charging station with the shortest distance from the next destination as the center.
After the charging pile is connected, the charging interface detection device firstly detects the tightness of the connection between the charging line interface and the vehicle charging interface, and if the tightness meets the requirement, the charging is carried out; if the tightness does not meet the requirement, an alarm is given; the charging interface detection device detects whether electric arcs are generated after the charging line interface and the vehicle charging interface are connected, if not, the tightness requirement is met, charging is started, after charging is started, the charging interface detection device continues to detect the temperature of the charging line interface and the vehicle charging interface, if the temperature exceeds a set safe temperature threshold value, the vehicle-mounted computer is disconnected from charging connection, and alarm information is sent to a vehicle owner terminal;
step four, after the charging time reaches the set staying time, the vehicle-mounted computer sends time reaching information and battery electric quantity information to the vehicle owner terminal, and the vehicle owner selects to stop charging or continue charging; if the charging is selected to be stopped, the vehicle-mounted computer is disconnected from the charging connection; if the vehicle owner selects to continue charging, the vehicle owner sets a new charging time length, the vehicle-mounted computer continues to execute the charging process until the battery is fully charged or the new charging time length is reached, and charging is finished;
the charging inspection module is used for detecting the personnel at the driving position and positioning and detecting the personnel at the driving position in real time in the charging process, the charging inspection module is used for detecting the pressure on the driving position in real time through a pressure sensor arranged on the driving position, if a door opening signal of a vehicle owner terminal is not received by a vehicle-mounted computer and the pressure on the driving position exceeds a set threshold value, the abnormal condition is judged, a camera arranged in the vehicle is opened to acquire image information, and alarm information is sent to the vehicle owner terminal; if the vehicle-mounted computer does not receive the door opening signal of the vehicle owner terminal, the positioning device arranged in the charging patrol module detects that the vehicle is displaced, the abnormal condition is determined, and alarm information is sent to the vehicle owner terminal.
Furthermore, the working state of the charging pile comprises output voltage, output current and voltage fluctuation data.
Further, the step two of judging whether to use fast charging or slow charging comprises the following steps: obtaining the required electric quantity according to the vehicle residual electric quantity, the distance to the next destination and the distance of the charging station with the shortest distance taking the next destination as the center
：
If it is
Selecting slow charging; if it is
Selecting quick charging; if it is
Selecting quick charging; therein
In order to achieve the efficiency of the quick charge,
charging efficiency for slow charging; the method also comprises the steps of judging whether an idle slow charging pile or an idle quick charging pile exists in the idle charging piles, when the slow charging pile is selected, if the idle charging pile does not have the slow charging pile, selecting the quick charging pile, and simultaneously controlling to open a protective cover of a quick charging interface by a charging interface control device; when the quick charging is selected, if the idle charging pile is not provided with the quick charging pile, the slow charging pile is selected, the charging interface control device controls the opening of the protective cover of the slow charging interface, and meanwhile, after the vehicle-mounted computer calculates and reselects the charging pile, the vehicle owner selects to modify or not modify the stay time length on the vehicle-mounted computer according to the required charging time length.
An electric vehicle alternating current-direct current charging pile detection system based on an electric vehicle alternating current-direct current charging pile detection method comprises an alternating current-direct current charging pile identification device, a charging interface detection device, a vehicle-mounted map module, a vehicle-mounted computer, a charging patrol module, a BMS power management module, a charging interface control device, a path planning module and a communication device;
the charging interface detection device, the vehicle-mounted map module, the charging patrol module, the BMS power management module, the charging interface control device, the path planning module and the communication device are respectively connected with the vehicle-mounted computer; the alternating current/direct current charging pile identification device is used for detecting the working state of the charging pile in real time after the charging pile is connected with the electric automobile; the charging interface detection device is used for detecting the connection state of the connection position of the charging line interface and the vehicle charging interface; the vehicle-mounted map module is used for acquiring the position of the charging pile and providing path data for the path planning module; the charging inspection module is used for monitoring the vehicle during vehicle charging; the BMS power management module is used for managing the battery; the charging interface control device is used for controlling the opening and closing of the fast charging interface and the slow charging interface protective cover; the path planning module is used for planning a path to the charging pile.
The method has the advantages that the method can help the owner to better select the charging strategy and simultaneously help to reduce the loss of the battery of the electric automobile.
Drawings
FIG. 1 is a schematic flow chart of a method for detecting an electric vehicle AC/DC charging pile;
FIG. 2 is a schematic diagram of an electric vehicle AC/DC charging pile detection system.
Detailed Description
The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following.
As shown in fig. 1, a method for detecting an ac/dc charging pile of an electric vehicle includes the following steps:
the method comprises the steps of firstly, acquiring the position of a travel destination charging pile, acquiring the position of a charging station on a map by taking a travel destination coordinate as a center according to map data of a vehicle-mounted map module, selecting the charging station with the shortest distance to the travel destination, and simultaneously acquiring the state information of charging piles in the charging station, wherein the state information comprises the number of idle charging piles, the number of fast-charging piles and slow-charging piles in the idle charging piles, and the average idle time of the charging piles in the charging station; judging whether the charging station is chargeable or not, and if the charging station meets the chargeable requirement, generating a path to the charging station by a path planning module; if the chargeable requirement is not met, sequentially selecting the charging stations from near to far according to the distance for judgment, and stopping the judgment until the distance to the charging stations exceeds the endurance mileage of the residual electric quantity of the vehicle;
if the remaining mileage of the vehicle cannot reach the charging station meeting the chargeable requirement, directly selecting the charging station closest to the position of the vehicle for charging;
satisfying the chargeable requirement is as follows:
the remaining driving range S adopts the following formula:
therein
For the mileage traveled by the consumed electric power,
is the amount of power that has been consumed by the vehicle,
as the remaining amount of power of the vehicle,
is safe electric quantity;
obtaining the estimated arrival time according to the remaining driving mileage
Comprises the following steps:
therein
Average speed of mileage driven by consumed electric power;
average idle time of charging pile
Comprises the following steps:
therein
The number of the charging piles in the charging station;
for every fill electric pile this day idle time long sum, every fill electric pile idle time length and be: after charging piles start working in the charging station at the same day, all the charging piles start accumulating the idle time;
average idle time of idle charging pile
Comprises the following steps:
therein
Counting the number of the idle charging piles;
the sum of the idle time lengths of all the idle charging piles after the last charging is finished;
if it is
If so, the charging requirement is met, and the charging station is entered for charging;
if it is
If the charging requirement is not met, the charging station is reselected;
step two, according to the planned path, the selected charging station is reached, and the stay time is set
According to the vehicle residual electric quantity, the distance from the vehicle to the next destination and the distance from the charging station with the shortest distance with the next destination as the center, judging whether to select quick charging or slow charging, and simultaneously opening the protective cover of the corresponding charging interface by the charging interface control device to connect the charging pile for charging;
wherein the judgment selects to use fast charging or slow chargingThe method comprises the following steps: obtaining the required electric quantity according to the vehicle residual electric quantity, the distance to the next destination and the distance of the charging station with the shortest distance taking the next destination as the center
：
If it is
Selecting slow charging; if it is
Selecting quick charging; if it is
Selecting quick charging; therein
In order to achieve the efficiency of the quick charge,
charging efficiency for slow charging; therein
In order to reach the distance to the next destination,
the distance of the charging station with the shortest distance from the next destination as the center.
After the charging pile is connected, the charging interface detection device firstly detects the tightness of the connection between the charging line interface and the vehicle charging interface, and if the tightness meets the requirement, the charging is carried out; if the tightness does not meet the requirement, an alarm is given; the charging interface detection device detects whether electric arcs are generated after the charging line interface and the vehicle charging interface are connected, if not, the tightness requirement is met, charging is started, after charging is started, the charging interface detection device continues to detect the temperature of the charging line interface and the vehicle charging interface, if the temperature exceeds a set safe temperature threshold value, the vehicle-mounted computer is disconnected from charging connection, and alarm information is sent to a vehicle owner terminal;
step four, after the charging time reaches the set staying time, the vehicle-mounted computer sends time reaching information and battery electric quantity information to the vehicle owner terminal, and the vehicle owner selects to stop charging or continue charging; if the charging is selected to be stopped, the vehicle-mounted computer is disconnected from the charging connection; if the vehicle owner selects to continue charging, the vehicle owner sets a new charging time length, the vehicle-mounted computer continues to execute the charging process until the battery is fully charged or the new charging time length is reached, and charging is finished;
the charging inspection module is used for detecting the personnel at the driving position and positioning and detecting the personnel at the driving position in real time in the charging process, the charging inspection module is used for detecting the pressure on the driving position in real time through a pressure sensor arranged on the driving position, if a door opening signal of a vehicle owner terminal is not received by a vehicle-mounted computer and the pressure on the driving position exceeds a set threshold value, the abnormal condition is judged, a camera arranged in the vehicle is opened to acquire image information, and alarm information is sent to the vehicle owner terminal; if the vehicle-mounted computer does not receive the door opening signal of the vehicle owner terminal, the positioning device arranged in the charging patrol module detects that the vehicle is displaced, the abnormal condition is determined, and alarm information is sent to the vehicle owner terminal.
The working state of the charging pile comprises output voltage, output current and voltage fluctuation data.
The judgment of selecting the use of the fast charging or the slow charging in the step two comprises the following processes: obtaining the required electric quantity according to the vehicle residual electric quantity, the distance to the next destination and the distance of the charging station with the shortest distance taking the next destination as the center
：
If it is
Selecting slow charging; if it is
Selecting quick charging; if it is
Selecting quick charging; therein
In order to achieve the efficiency of the quick charge,
charging efficiency for slow charging; the method also comprises the steps of judging whether an idle slow charging pile or an idle quick charging pile exists in the idle charging piles, when the slow charging pile is selected, if the idle charging pile does not have the slow charging pile, selecting the quick charging pile, and simultaneously controlling to open a protective cover of a quick charging interface by a charging interface control device; when the quick charging is selected, if the idle charging pile is not provided with the quick charging pile, the slow charging pile is selected, the charging interface control device controls the opening of the protective cover of the slow charging interface, and meanwhile, after the vehicle-mounted computer calculates and reselects the charging pile, the vehicle owner selects to modify or not modify the stay time length on the vehicle-mounted computer according to the required charging time length.
As shown in fig. 2, the electric vehicle ac/dc charging pile detection system includes an ac/dc charging pile recognition device, a charging interface detection device, a vehicle-mounted map module, a vehicle-mounted computer, a charging patrol module, a BMS power management module, a charging interface control device, a path planning module, and a communication device;
the charging interface detection device, the vehicle-mounted map module, the charging patrol module, the BMS power management module, the charging interface control device, the path planning module and the communication device are respectively connected with the vehicle-mounted computer; the alternating current/direct current charging pile identification device is used for detecting the working state of the charging pile in real time after the charging pile is connected with the electric automobile; the charging interface detection device is used for detecting the connection state of the connection position of the charging line interface and the vehicle charging interface; the vehicle-mounted map module is used for acquiring the position of the charging pile and providing path data for the path planning module; the charging inspection module is used for monitoring the vehicle during vehicle charging; the BMS power management module is used for managing the battery; the charging interface control device is used for controlling the opening and closing of the fast charging interface and the slow charging interface protective cover; the path planning module is used for planning a path to the charging pile.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (4)
1. The method for detecting the alternating current-direct current charging pile of the electric automobile is characterized by comprising the following steps of:
the method comprises the steps of firstly, acquiring the position of a travel destination charging pile, acquiring the position of a charging station on a map by taking a travel destination coordinate as a center according to map data of a vehicle-mounted map module, selecting the charging station with the shortest distance to the travel destination, and simultaneously acquiring the state information of charging piles in the charging station, wherein the state information comprises the number of idle charging piles, the number of fast-charging piles and slow-charging piles in the idle charging piles, and the average idle time of the charging piles in the charging station; judging whether the charging station is chargeable or not, and if the charging station meets the chargeable requirement, generating a path to the charging station by a path planning module; if the chargeable requirement is not met, sequentially selecting the charging stations from near to far according to the distance for judgment, and stopping the judgment until the distance to the charging stations exceeds the endurance mileage of the residual electric quantity of the vehicle;
if the remaining mileage of the vehicle cannot reach the charging station meeting the chargeable requirement, directly selecting the charging station closest to the position of the vehicle for charging;
satisfying the chargeable requirement is as follows:
the remaining driving range S adopts the following formula:
therein
For the mileage traveled by the consumed electric power,
is the amount of power that has been consumed by the vehicle,
as the remaining amount of power of the vehicle,
is safe electric quantity;
obtaining the estimated arrival time according to the remaining driving mileage
Comprises the following steps:
therein
Average speed of mileage driven by consumed electric power;
average idle time of charging pile
Comprises the following steps:
therein
The number of the charging piles in the charging station;
for every fill electric pile this day idle time long sum, every fill electric pile idle time length and be: after charging piles start working in the charging station at the same day, all the charging piles start accumulating the idle time;
average idle time of idle charging pile
Comprises the following steps:
therein
Counting the number of the idle charging piles;
the sum of the idle time lengths of all the idle charging piles after the last charging is finished;
if it is
If so, the charging requirement is met, and the charging station is entered for charging;
if it is
If the charging requirement is not met, the charging station is reselected;
step two, planning a path, arriving at the selected charging station, and setting the stay time
According to the vehicle residual electric quantity, the distance from the vehicle to the next destination and the distance from the charging station with the shortest distance with the next destination as the center, judging whether to select quick charging or slow charging, and simultaneously opening the protective cover of the corresponding charging interface by the charging interface control device to connect the charging pile for charging;
the judgment of selecting to use fast charging or slow charging comprises the following processes: obtaining the required electric quantity according to the vehicle residual electric quantity, the distance to the next destination and the distance of the charging station with the shortest distance taking the next destination as the center
：
If it is
Selecting slow charging; if it is
Selecting quick charging; if it is
Selecting quick charging; therein
In order to achieve the efficiency of the quick charge,
charging efficiency for slow charging; therein
In order to reach the distance to the next destination,
the distance of the charging station with the shortest distance taking the next destination as the center;
after the charging pile is connected, the charging interface detection device firstly detects the tightness of the connection between the charging line interface and the vehicle charging interface, and if the tightness meets the requirement, the charging is carried out; if the tightness does not meet the requirement, an alarm is given; the charging interface detection device detects whether electric arcs are generated after the charging line interface and the vehicle charging interface are connected, if not, the tightness requirement is met, charging is started, after charging is started, the charging interface detection device continues to detect the temperature of the charging line interface and the vehicle charging interface, if the temperature exceeds a set safe temperature threshold value, the vehicle-mounted computer is disconnected from charging connection, and alarm information is sent to a vehicle owner terminal;
step four, after the charging time reaches the set staying time, the vehicle-mounted computer sends time reaching information and battery electric quantity information to the vehicle owner terminal, and the vehicle owner selects to stop charging or continue charging; if the charging is selected to be stopped, the vehicle-mounted computer is disconnected from the charging connection; if the vehicle owner selects to continue charging, the vehicle owner sets a new charging time length, the vehicle-mounted computer continues to execute the charging process until the battery is fully charged or the new charging time length is reached, and charging is finished;
the charging inspection module is used for detecting the personnel at the driving position and positioning and detecting the personnel at the driving position in real time in the charging process, the charging inspection module is used for detecting the pressure on the driving position in real time through a pressure sensor arranged on the driving position, if a door opening signal of a vehicle owner terminal is not received by a vehicle-mounted computer and the pressure on the driving position exceeds a set threshold value, the abnormal condition is judged, a camera arranged in the vehicle is opened to acquire image information, and alarm information is sent to the vehicle owner terminal; if the vehicle-mounted computer does not receive the door opening signal of the vehicle owner terminal, the positioning device arranged in the charging patrol module detects that the vehicle is displaced, the abnormal condition is determined, and alarm information is sent to the vehicle owner terminal.
2. The method for detecting the alternating current/direct current charging pile of the electric automobile as claimed in claim 1, wherein the working state of the charging pile comprises output voltage, output current and voltage fluctuation data.
3. The method for detecting the alternating current-direct current charging pile of the electric automobile as claimed in claim 1, wherein the second step further comprises the step of judging whether an idle slow charging pile or an idle fast charging pile exists in the idle charging piles, when slow charging is selected, if no slow charging pile exists in the idle charging piles, the fast charging pile is selected, and meanwhile, the charging interface control device controls to open a protective cover of a fast charging interface; when the quick charging is selected, if the idle charging pile is not provided with the quick charging pile, the slow charging pile is selected, the charging interface control device controls the opening of the protective cover of the slow charging interface, and meanwhile, after the vehicle-mounted computer calculates and reselects the charging pile, the vehicle owner selects to modify or not modify the stay time length on the vehicle-mounted computer according to the required charging time length.
4. An electric vehicle alternating current-direct current charging pile detection system based on the electric vehicle alternating current-direct current charging pile detection method of claim 1 is characterized by comprising an alternating current-direct current charging pile identification device, a charging interface detection device, a vehicle-mounted map module, a vehicle-mounted computer, a charging patrol module, a BMS power management module, a charging interface control device, a path planning module and a communication device;
the charging interface detection device, the vehicle-mounted map module, the charging patrol module, the BMS power management module, the charging interface control device, the path planning module and the communication device are respectively connected with the vehicle-mounted computer; the alternating current/direct current charging pile identification device is used for detecting the working state of the charging pile in real time after the charging pile is connected with the electric automobile; the charging interface detection device is used for detecting the connection state of the connection position of the charging line interface and the vehicle charging interface; the vehicle-mounted map module is used for acquiring the position of the charging pile and providing path data for the path planning module; the charging inspection module is used for monitoring the vehicle during vehicle charging; the BMS power management module is used for managing the battery; the charging interface control device is used for controlling the opening and closing of the fast charging interface and the slow charging interface protective cover; the path planning module is used for planning a path to the charging pile.
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