CN110549898B - Station type charging system and method for vehicle - Google Patents

Station type charging system and method for vehicle Download PDF

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Publication number
CN110549898B
CN110549898B CN201810551556.8A CN201810551556A CN110549898B CN 110549898 B CN110549898 B CN 110549898B CN 201810551556 A CN201810551556 A CN 201810551556A CN 110549898 B CN110549898 B CN 110549898B
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vehicle
charging
station
charged
power battery
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CN201810551556.8A
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CN110549898A (en
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佘红涛
其他发明人请求不公开姓名
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BYD Co Ltd
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BYD Co Ltd
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Priority to CN201810551556.8A priority Critical patent/CN110549898B/en
Priority to PCT/CN2019/089271 priority patent/WO2019228455A1/en
Priority to BR112020024450-3A priority patent/BR112020024450A2/en
Publication of CN110549898A publication Critical patent/CN110549898A/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
    • 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
    • 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
    • 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]
    • 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
    • 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 station type charging system and a station type charging method for a vehicle, wherein the system comprises the following steps: the system comprises a plurality of battery management units and a plurality of positioning units, wherein the battery management units and the positioning units are arranged in a plurality of vehicles in a station area, the battery management units are used for detecting the state parameters of power batteries of all the vehicles in real time, and the positioning units are used for positioning the vehicles; the plurality of platform chargers are arranged corresponding to the plurality of parking sites in the station area and used for charging the power batteries; and the charging control unit judges whether the vehicle needing to be charged exists according to the state parameters of all the power batteries, if so, acquires a corresponding charging mode according to the position information of the vehicle needing to be charged and the position information of the rear vehicle adjacent to the vehicle needing to be charged, and controls the platform charger of the corresponding station to charge the vehicle in the corresponding charging mode when the vehicle needing to be charged stops at the preset position of the corresponding station. Therefore, the platform charger is reasonably configured, and the power demand of the power battery and the normal operation of the vehicle are ensured.

Description

Station type charging system and method for vehicle
Technical Field
The invention relates to the technical field of charging, in particular to a station type charging system and a station type charging method for a vehicle.
Background
In the related art, a vehicle-mounted energy storage device (such as a power Battery) is disposed on a vehicle, a BMS (Battery Management System) on the vehicle communicates with a vehicle CCU (Central Control Unit), a wireless connection exists between an Access Point (AP) and a line segment AP, and a station switch of a charging station communicates with a charger via an ethernet. That is, the BMS of the vehicle performs real-time communication only with the charger of the charging station, thereby causing the vehicle to be charged at each station, failing to reasonably and effectively use the platform charger, and frequently charging the battery, which affects the service life of the battery.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, a first objective of the present invention is to provide a station charging system for a vehicle, so as to implement a reasonable configuration of platform chargers and avoid frequent charging of a power battery of the vehicle.
A second object of the present invention is to provide a station charging method for a vehicle.
A third object of the invention is to propose a computer device.
A fourth object of the invention is to propose a computer-readable storage medium.
A fifth object of the invention is to propose a computer program product.
In order to achieve the above object, a station charging system for a vehicle according to an embodiment of a first aspect of the present invention includes: the system comprises a plurality of battery management units, a plurality of battery management units and a plurality of mobile terminals, wherein the battery management units are respectively and correspondingly arranged in a plurality of vehicles in a station area, and each battery management unit is used for detecting the state parameters of a power battery of the corresponding vehicle in real time; the positioning units are respectively and correspondingly arranged in a plurality of vehicles in a station area, and each positioning unit is used for acquiring the position information of the corresponding vehicle in real time; the platform chargers are arranged corresponding to a plurality of parking sites in the station area, and each platform charger is used for charging a power battery of the vehicle; the charging control unit judges whether vehicles needing to be charged exist according to the received state parameters of all the power batteries, acquires the position information of the vehicles needing to be charged and the position information of rear vehicles adjacent to the vehicles needing to be charged when judging that the vehicles needing to be charged exist, acquires a corresponding charging mode according to the position information of the vehicles needing to be charged and the position information of the rear vehicles adjacent to the vehicles needing to be charged, and controls the platform chargers of the stations to charge the vehicles in the corresponding charging modes when the vehicles needing to be charged stop at preset positions of the corresponding stations.
According to the station type charging system of the vehicle, the charging control unit is in real-time communication with the station chargers of each station and the battery management units of each vehicle, so that when the power batteries of the vehicles need to be charged, the corresponding charging modes are obtained according to the position information of the vehicles needing to be charged and the position information of the rear vehicles adjacent to the vehicles, and then the charging control unit controls the station chargers of the stations into which the vehicles needing to be charged are to drive to charge the vehicles in the corresponding charging modes.
In order to achieve the above object, a second embodiment of the present invention provides a station charging method for a vehicle, including the following steps: acquiring state parameters of power batteries of all vehicles in a station area in real time; judging whether vehicles needing to be charged exist according to the state parameters of all the power batteries; if the vehicle needing to be charged exists, acquiring the position information of the vehicle needing to be charged and the position information of a rear vehicle adjacent to the vehicle needing to be charged; acquiring a corresponding charging mode according to the position information of the vehicle needing to be charged and the position information of the rear vehicle adjacent to the vehicle; and when the vehicle needing to be charged stops at the preset position of the corresponding station, controlling the platform charger of the station to charge the vehicle in a corresponding charging mode.
According to the station type charging method for the vehicle, disclosed by the embodiment of the invention, the station chargers can be controlled according to the state parameters and the position information of the power battery of the vehicle, so that the reasonable configuration of the station chargers is realized, the charging requirement of the power battery is met, the frequent charging of the power battery is avoided, the service life of the power battery is prolonged, and the normal operation of the vehicle can be ensured.
In order to achieve the above object, a third embodiment of the present invention provides a computer device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the station charging method for a vehicle described above.
According to the computer equipment provided by the embodiment of the invention, when the program corresponding to the station type charging method of the vehicle stored in the memory is executed by the processor, the reasonable configuration of each station charger can be realized, the charging requirement of the power battery of the vehicle is met, the frequent charging of the power battery is avoided, the service life of the power battery is further prolonged, and the normal operation of the vehicle can be ensured.
To achieve the above object, a fourth aspect of the present invention provides a computer-readable storage medium, having a computer program stored thereon, where the computer program is executed by a processor to implement the station charging method for a vehicle described above.
According to the computer-readable storage medium of the embodiment of the invention, when the program corresponding to the station type charging method of the vehicle stored on the computer-readable storage medium is executed by the processor, the reasonable configuration of each station charger can be realized, the charging requirement of the power battery of the vehicle is met, the frequent charging of the power battery is avoided, the service life of the power battery is further prolonged, and the normal operation of the vehicle can be ensured.
To achieve the above object, a fifth embodiment of the present invention provides a computer program product, wherein when the instructions of the computer program product are executed by a processor, the method for charging a station of a vehicle is implemented.
According to the computer program product provided by the embodiment of the invention, when the instruction corresponding to the station type charging method of the vehicle is executed by the processor, the reasonable configuration of each station charger can be realized, the charging requirement of the power battery of the vehicle is met, the frequent charging of the power battery is avoided, the service life of the power battery is further prolonged, and the normal operation of the vehicle can be ensured.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic configuration diagram of a station charging system of a vehicle according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of a vehicle travel route according to an exemplary embodiment of the present invention;
FIG. 3 is a schematic block diagram of a station charging system for a vehicle according to one embodiment of the present invention;
FIG. 4 is a schematic block diagram of a station charging system for a vehicle according to another embodiment of the present invention;
FIG. 5 is a schematic block diagram of a station charging system for a vehicle according to yet another embodiment of the present invention;
FIG. 6 is an operational flow diagram of a station charging system for a vehicle according to one embodiment of the present invention;
fig. 7 is a flowchart of a station charging method of a vehicle according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A station charging system and method of a vehicle according to an embodiment of the present invention will be described with reference to the drawings.
Fig. 1 is a schematic structural diagram of a station charging system of a vehicle according to an embodiment of the present invention.
As shown in fig. 1, the station charging system 100 of the vehicle includes a plurality of battery management units 10, a plurality of station chargers 20, a charging control unit 30, and a plurality of positioning units 90.
The battery management units 10 are arranged in a plurality of vehicles in the station area, and each battery management unit 10 is used for detecting the state parameters of the power battery of the corresponding vehicle in real time; the plurality of positioning units 90 are respectively and correspondingly arranged in a plurality of vehicles in the station area, and each positioning unit 90 is used for acquiring the position information of the corresponding vehicle in real time; a plurality of platform chargers 20 in the station area are arranged corresponding to a plurality of parking stations, and each platform charger 20 is used for charging a power battery of a vehicle; the charging control unit 30 is respectively connected with each battery management unit 10, each positioning unit 90 and each platform charger 20, the charging control unit 30 judges whether a vehicle needing to be charged exists according to the received state parameters of all the power batteries, and when judging that the vehicle needing to be charged exists, the charging control unit 30 acquires the position information of the vehicle needing to be charged and the position information of a rear vehicle adjacent to the vehicle needing to be charged (namely the vehicle with the closest distance from the rear to the vehicle needing to be charged), acquires a corresponding charging mode according to the position information of the vehicle needing to be charged and the position information of the rear vehicle adjacent to the vehicle needing to be charged, and controls the platform charger 20 of a station to charge the vehicle in the corresponding charging mode when the vehicle needing to be charged stops at a preset position of the corresponding station.
Alternatively, the charging control unit 30 may also control the platform charger 20 of the station to which the vehicle to be charged is about to arrive to enter the charging preparation state after acquiring the position information of the vehicle to be charged, so as to charge the vehicle more quickly after the vehicle to be charged arrives at the charging station.
Specifically, during the driving of the vehicles in the station area, the charging control unit 30 may perform real-time communication with the battery management unit 10 of each vehicle, so as to timely determine the vehicle that needs to be charged. After the vehicles needing to be charged are judged, the positioning unit 90 of the vehicle needing to be charged and the positioning unit 90 of the rear vehicle adjacent to the vehicle can be communicated according to the corresponding relation between the battery management unit 10 and the positioning unit 90 of each vehicle and the sequence of the vehicles in the station area so as to obtain the position information of the vehicle needing to be charged and the position information of the rear vehicle adjacent to the vehicle, namely, the charging control unit 30 is communicated with the positioning unit 90 when needed, so that the communication redundancy of the charging control unit 30 can be avoided. Further, a corresponding charging mode is obtained according to the position information, and when the vehicle to be charged arrives at the corresponding station, the charging control unit 30 charges the vehicle to be charged in the corresponding charging mode.
Alternatively, the charging control unit 30 may simultaneously perform real-time communication with the battery management unit 10 and the positioning unit 90 to obtain the state parameters of the power battery and the position information of the vehicle in real time, so that after determining that there is a vehicle to be charged, the position information of the vehicle and the position information of the rear vehicle adjacent to the vehicle can be more quickly obtained.
The station area, i.e., the driving area of the vehicle, includes a route on which the vehicle is driven and a stop at which the vehicle is parked, and a plurality of vehicles can be operated simultaneously in the station area. The kinetic energy source of the vehicle is a power battery installed on the vehicle, the vehicle may be a train, a rail vehicle, etc., such as a tram, and when the vehicle is running, the vehicle generally stops at a specific station, and in order to ensure sufficient kinetic energy of each vehicle in the station area, a platform charger 20 may be provided at each stopping station for charging the vehicle.
In this embodiment, the distance between adjacent vehicles in the station area can be adjusted by the speed of the vehicle and the stopping time of the vehicle at the station. Alternatively, initially, departure of vehicles may be controlled at the same time interval so that the distance between two adjacent vehicles is the same (regardless of station stops).
In an embodiment of the present invention, the state parameter of the power battery includes a remaining power of the power battery, and the charging control unit 30 determines that the power battery does not meet the preset driving requirement when the remaining power of the power battery of the vehicle is less than the power threshold, that is, the vehicle where the power battery is located needs to be charged.
The electric quantity threshold value can be calibrated according to the actual requirement of the vehicle, and can be a constant or a variable. For example, when the electric quantity threshold is a variable, after the driving route of the vehicle is determined, the electric quantity threshold is positively correlated with the driving distance corresponding to the to-be-driven route or the number of remaining stations, that is, the electric quantity threshold is smaller as the driving distance corresponding to the to-be-driven route is shorter or the number of remaining stations is smaller. It should be understood that the value of the electric quantity threshold value should be greater than the remaining electric quantity corresponding to the discharge-prohibited voltage of the power battery, and the electric quantity threshold value needs to be set to ensure that the vehicle runs to the charging station.
Alternatively, the state parameter of the power battery may include a voltage of the power battery, and the charging control unit 30 determines that the power battery does not meet the preset driving requirement when the voltage of the power battery of the vehicle is smaller than a voltage threshold, that is, the vehicle where the power battery is located needs to be charged. The preset voltage can be calibrated according to the requirement.
Further, after judging that there is a vehicle that needs to be charged, the charging control unit 30 is specifically configured to, when acquiring a charging mode of the vehicle that needs to be charged according to the position information of the vehicle that needs to be charged and the position information of the rear vehicle adjacent thereto, acquire the charging mode of the vehicle that needs to be charged as a constant-current constant-voltage charging mode when a distance between the vehicle that needs to be charged and the rear vehicle adjacent thereto is greater than or equal to a preset value; and when the distance between the vehicle needing to be charged and the rear vehicle adjacent to the vehicle is smaller than a preset value, the acquired charging mode is a pulse charging mode.
The preset value may be calibrated according to a requirement (e.g., a distance between adjacent stations), for example, when the distance between two adjacent stations is large, the preset value may be a distance between two stations; when the distance between two adjacent stations is small, the preset value can be three station distances. In addition, because the vehicle needs to stop when reaching one station, when the distance between two adjacent stations in the station area is larger, the value of the preset value can be relatively larger, and when the distance between two adjacent stations in the station area is smaller, the value of the preset value can be relatively smaller.
Specifically, when the platform charger charges the power battery in a constant-current constant-voltage charging mode, the platform charger can perform multi-stage constant-current charging first and then perform constant-voltage charging; when the platform charger charges the power battery in a pulse charging mode, pulse current intermittent charging can be carried out.
Specifically, if the distance between the vehicle to be charged and the vehicle behind the vehicle is greater than or equal to the preset value, it indicates that the vehicle to be charged may be allowed to be charged for a long time, and to some extent, it indicates that there are few vehicles (less traffic) on the line in the station, when the vehicle to be charged reaches the preset position of the corresponding station, the charging control unit 30 controls the charging mode of the corresponding station charger 20 to be multi-stage constant current charging and then constant voltage charging, for example, the charging is divided into three stages, the first stage is charging with a first constant current, when the battery capacity reaches a certain amount, the second stage is charging with a second constant current, and when the battery capacity reaches another amount, the third stage is charging with a constant voltage, thereby ensuring that the charging performance of the power battery is optimal and maximizing the cycle life of the power battery.
If the distance between the vehicle to be charged and the rear vehicle adjacent thereto is less than the preset value, it is described that the vehicle to be charged can be allowed to be charged for a shorter time, to a certain extent, the system also shows that more vehicles (more people flow) are operated on the lines in the station area at the same time, in order to ensure the timely supplement of the electric quantity of the power battery, the normal operation of the vehicles and the timely evacuation of passengers, when the vehicle to be charged reaches the preset position of the corresponding station, the charging control unit 30 controls the charging mode of the corresponding station charger 20 to charge the battery with the pulse current first, and then stopping charging for a period of time (the time can be calibrated according to the model, the charging requirement and the like of the power battery), and then charging the battery by using the pulse current, thereby ensuring that the electric quantity of the power battery can quickly meet the driving requirement of the vehicle and shortening the charging time.
In one example of the present invention, as shown in fig. 2, two vehicles (C1, C2) are simultaneously driven on a preset route in a station area, and a is set on the preset route of the vehicles1、A2、A3、…、AnIn the process that the vehicles (C1 and C2) travel on the line (such as running rails) in total of n stations, the battery management unit 10 arranged on the vehicles (C1 and C2) can acquire state parameters of the power battery in real time, such as the residual capacity, and can send the residual capacity of the power battery to the charging control unit 30. When vehicle C1 leaves station A1To A2Traveling, vehicle C2 departs from station AiTo Ai+1When the vehicle is running, if the charging control unit 30 determines that the power battery of the vehicle C1 meets the running requirement, and the remaining capacity of the power battery of the vehicle C2 is smaller than the capacity threshold value and does not meet the running requirement, the station a to which the vehicle C2 is about to arrive is controlledi+1The platform charger 20 of (1) enters a charge preparation state and acquires the position information of the vehicle C2 and the vehicle C1 from the positioning units 90 of the two vehicles to calculate the distance between the vehicles C1, C2, and if the distance is greater than a preset value, the vehicle C2 stops at the station ai+1At the preset position, controlling the station Ai+1The station charger 20 of (1) charges the vehicle C2 in a constant-current constant-voltage charging mode. Wherein i is less than or equal to n-1. Of course, the vehicleVehicle C1 stops at station A2Then, the station A2The dock charger 20 does not operate.
It should be noted that the state parameters of the power battery may further include the temperature of the power battery, the maximum charging power, and the like, so that the platform charger 20 charges the power battery to provide corresponding charging conditions for the power battery, so as to improve the charging efficiency.
In one embodiment of the present invention, the station charging system 100 of the vehicle further includes a line wireless access point 50 and a plurality of vehicle-mounted wireless access points 40 provided corresponding to the plurality of vehicles, wherein the charging control unit 30 wirelessly communicates with the corresponding battery management unit 10 and the positioning unit 90 through the line wireless access point 50 and each of the vehicle-mounted wireless access points 40, respectively. In this embodiment, taking an example where one vehicle exists in a station, the structure of the station charging system 100 of the vehicle is shown in fig. 3.
The charging control unit 30 and the wireless line access point 50 may be connected via an ethernet.
Further, the station-based charging system 100 of the vehicle further includes a plurality of vehicle control units 60, the vehicle control units 60 are respectively and correspondingly disposed in the plurality of vehicles in the station area, one end of each vehicle control unit 60 is respectively connected to the corresponding battery management unit 10 and the corresponding positioning unit 90 through a controller area network CAN bus, and the other end of each vehicle control unit 60 is connected to the corresponding vehicle-mounted wireless access point 40 through the vehicle-mounted switch 70. Wherein, the vehicle-mounted switch 70 and the vehicle-mounted wireless access point 40 can be connected through Ethernet. In this embodiment, taking an example where one vehicle exists in a station, the structure of the station charging system 100 of the vehicle is shown in fig. 4.
Alternatively, the entire vehicle control unit 60 may also transmit the identity information of the vehicle when transmitting the state parameter of the power battery and the position information of the vehicle to the charge control unit 30, so as to correspond the state parameter and the position information.
Further, the station charging system 100 of the vehicle further includes a plurality of station switches 80 corresponding to the plurality of station chargers 20, wherein the charging control unit 30 communicates with the corresponding station chargers 20 through the station switches 80. In this embodiment, taking an example where one vehicle exists in a station, the structure of the station charging system 100 of the vehicle is shown in fig. 5.
One end of each platform switch 80 is connected to the charging control unit 30 through an optical fiber, and the other end of each platform switch 80 is connected to the corresponding platform charger 20 through an ethernet.
It should be noted that the communication structures between the charging control unit 30 and the battery management unit 10 and the positioning unit 90, and the communication structures between the charging control unit 30 and the platform charger 20 are not limited to the above-mentioned examples shown in fig. 3, 4, and 5, and any structures that can implement the communication between the charging control unit 30 and the battery management unit 10 and the positioning unit 90, and the communication between the charging control unit 30 and the platform charger 20 are within the protection scope of the present invention.
The operation flow of the station charging system of the vehicle of the embodiment of the present invention is described below with reference to fig. 6.
As shown in fig. 6, the work flow of the station charging system of the vehicle includes the following steps:
s1, start;
s2, each battery management unit respectively collects SOC (State of Charge), voltage and temperature of the power battery in real time, and each positioning unit collects position information of a corresponding vehicle in real time;
s3, the charging control unit communicates with each battery management unit in real time to obtain the SOC, the voltage and the temperature of each power battery, and the charging control unit communicates with each positioning unit in real time to obtain the position information of each vehicle;
s4, when the SOC of the power battery is smaller than the electric quantity threshold value, namely a vehicle needing to be charged exists, the charging control unit obtains a corresponding charging mode according to the distance between the vehicle needing to be charged and the adjacent rear vehicle, and communicates with a platform charger of the next station of the vehicle needing to be charged so as to control the platform charger to enter a charging preparation state;
the charging preparation state may be the closing of a contactor between the platform charger control and the power grid, or the sending of a prompt message to make the staff of the platform charger perform relevant preparation work, or the selection of corresponding charging equipment to adapt to the vehicle to be charged, and of course, the charging preparation state is not limited to the above-mentioned cases.
S5, when the vehicle needing to be charged stops at the next station, the charging control unit controls the platform charger at the station to charge the vehicle in the acquired charging mode;
s6, when the SOC of the power battery meets the requirement, such as reaching 100%, the battery management unit sends the SOC, the voltage and the temperature of the current power battery to the charging control unit;
s7, the charging control unit communicating with a platform charger that charges the vehicle;
s8, the charging control unit controls the charging power limit of the platform charger to 0;
if a contactor is connected between the platform charger and the power battery of the vehicle, the platform charger needs to control the contactor to be closed when the platform charger charges the power battery, and then the contactor is controlled to be disconnected when the charging power limit value reaches 0.
And S9, ending.
In summary, according to the station type charging system of the vehicle in the embodiment of the present invention, the charging control unit performs real-time communication with the station chargers at each station in the station area and the battery management units of the vehicles to determine whether there are vehicles to be charged, and when it is determined that there are vehicles to be charged, the charging control unit obtains the position information of the vehicle to be charged and the position information of the rear vehicle adjacent to the vehicle to be charged to obtain the charging mode of the vehicle to be charged, and controls the station charger of the station into which the vehicle to be charged is about to enter to charge the battery in the corresponding charging mode.
Figure 7 is a flow chart of a method of station charging of a vehicle according to an embodiment of the invention,
as shown in fig. 7, the station charging method of the vehicle includes the steps of:
and S101, acquiring the state parameters of the power batteries of all vehicles in the station area in real time.
And S102, judging whether vehicles needing to be charged exist according to the state parameters of all the power batteries.
And S103, if the vehicle needing to be charged exists, acquiring the position information of the vehicle needing to be charged and the position information of a rear vehicle adjacent to the vehicle.
And S104, acquiring the charging mode of the vehicle needing to be charged according to the position information of the vehicle needing to be charged and the position information of the rear vehicle adjacent to the vehicle needing to be charged.
In one embodiment of the invention, when the distance between a vehicle needing to be charged and a rear vehicle adjacent to the vehicle is greater than or equal to a preset value, the acquired charging mode is a constant-current constant-voltage charging mode; and when the distance between the vehicle needing to be charged and the rear vehicle adjacent to the vehicle is smaller than the preset value, the acquired charging mode is a pulse charging mode.
And S105, when the vehicle needing to be charged stops at the preset position of the corresponding station, controlling the platform charger of the station to charge the vehicle in the corresponding charging mode.
When the platform charger charges the power battery in the constant-current constant-voltage charging mode, firstly, multi-stage constant-current charging is carried out, and then, constant-voltage charging is carried out; and when the platform charger charges the power battery in the pulse charging mode, performing pulse current intermittent charging.
In an embodiment of the present invention, the state parameter of the power battery includes a remaining capacity of the power battery, and if the remaining capacity of the power battery of the vehicle is smaller than a capacity threshold, it is determined that the power battery does not meet a preset driving requirement, that is, the vehicle in which the power battery is located needs to be charged.
In another embodiment of the invention, the state parameter of the power battery includes a voltage of the power battery, and if the voltage of the power battery of the vehicle is smaller than a voltage threshold, it is determined that the power battery does not meet a preset driving requirement, that is, the vehicle in which the power battery is located needs to be charged.
It should be noted that, for other specific implementations of the station-based charging method for a vehicle according to the embodiments of the present invention, reference may be made to the specific implementations of the station-based charging system for a vehicle according to the above embodiments of the present invention, and in order to reduce redundancy, no further description is given here.
According to the station type charging method for the vehicle, disclosed by the embodiment of the invention, the station chargers can be controlled according to the state parameters and the position information of the power battery of the vehicle, so that the reasonable configuration of the station chargers is realized, the charging requirement of the power battery is met, the frequent charging of the power battery is avoided, the service life of the power battery is prolonged, and the normal operation of the vehicle can be ensured.
The invention also provides computer equipment which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor executes the program to realize the station charging method of the vehicle.
According to the computer equipment provided by the embodiment of the invention, when the program corresponding to the station type charging method of the vehicle stored in the memory is executed by the processor, the reasonable configuration of each station charger can be realized, the charging requirement of the power battery of the vehicle is met, the frequent charging of the power battery is avoided, the service life of the power battery is further prolonged, and the normal operation of the vehicle can be ensured.
Further, the present invention proposes a computer-readable storage medium having stored thereon a computer program, which is executed by a processor, to implement the station charging method of the vehicle described above.
According to the computer-readable storage medium of the embodiment of the invention, when the program corresponding to the station type charging method of the vehicle stored on the computer-readable storage medium is executed by the processor, the reasonable configuration of each station charger can be realized, the charging requirement of the power battery of the vehicle is met, the frequent charging of the power battery is avoided, the service life of the power battery is further prolonged, and the normal operation of the vehicle can be ensured.
Furthermore, the present invention also provides a computer program product, wherein when the instructions of the computer program product are executed by a processor, the station charging method of the vehicle is realized.
According to the computer program product provided by the embodiment of the invention, when the instruction corresponding to the station type charging method of the vehicle is executed by the processor, the reasonable configuration of each station charger can be realized, the charging requirement of the power battery of the vehicle is met, the frequent charging of the power battery is avoided, the service life of the power battery is further prolonged, and the normal operation of the vehicle can be ensured.
It should be noted that the logic and/or steps represented in the flowcharts or otherwise described herein, such as an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (16)

1. A station charging system for a vehicle, comprising:
the system comprises a plurality of battery management units, a plurality of battery management units and a plurality of mobile terminals, wherein the battery management units are respectively and correspondingly arranged in a plurality of vehicles in a station area, and each battery management unit is used for detecting the state parameters of a power battery of the corresponding vehicle in real time;
the positioning units are respectively and correspondingly arranged in a plurality of vehicles in a station area, and each positioning unit is used for acquiring the position information of the corresponding vehicle in real time;
the platform chargers are arranged corresponding to a plurality of parking sites in the station area, and each platform charger is used for charging a power battery of the vehicle;
the charging control unit is respectively connected with each battery management unit, each positioning unit and each platform charger, judges whether a vehicle needing to be charged exists according to the received state parameters of all the power batteries, acquires the position information of the vehicle and the position information of a rear vehicle adjacent to the vehicle when judging that the vehicle needing to be charged exists, acquires a corresponding charging mode according to the position information of the vehicle and the position information of the rear vehicle adjacent to the vehicle, and controls the platform charger of the station to charge the vehicle in the corresponding charging mode when the vehicle needing to be charged stops at a preset position of the corresponding station.
2. The station charging system for a vehicle according to claim 1, wherein the charging control unit is configured to, when acquiring the corresponding charging mode according to the position information of the vehicle to be charged and the position information of the rear vehicle adjacent thereto:
when the distance between the vehicle needing to be charged and the rear vehicle adjacent to the vehicle is larger than or equal to a preset value, the acquired charging mode is a constant-current constant-voltage charging mode;
and when the distance between the vehicle needing to be charged and the rear vehicle adjacent to the vehicle is smaller than the preset value, the acquired charging mode is a pulse charging mode.
3. The station charging system of a vehicle according to claim 2,
when the platform charger charges the power battery in the constant-current constant-voltage charging mode, firstly, multi-stage constant-current charging is carried out, and then, constant-voltage charging is carried out;
and when the platform charger charges the power battery in the pulse charging mode, performing pulse current intermittent charging.
4. The station charging system of claim 1, wherein the state parameter of the power battery comprises a remaining capacity of the power battery, and the charging control unit determines that the vehicle in which the power battery is located needs to be charged when the remaining capacity of the power battery of the vehicle is less than a capacity threshold.
5. The station charging system of claim 1, wherein the state parameter of the power battery comprises a voltage of the power battery, and the charging control unit determines that the vehicle in which the power battery is located needs to be charged when the voltage of the power battery of the vehicle is less than a voltage threshold.
6. The station charging system for vehicles according to claim 1, further comprising a line wireless access point and a plurality of vehicle wireless access points provided corresponding to a plurality of vehicles, wherein the charging control unit wirelessly communicates with the corresponding battery management unit and the positioning unit through the line wireless access point and each of the vehicle wireless access points, respectively.
7. The station charging system of a vehicle of claim 6, further comprising:
the vehicle control system comprises a plurality of vehicle control units, wherein the vehicle control units are respectively and correspondingly arranged in a plurality of vehicles in a station area, each vehicle control unit is provided with one end respectively corresponding to a battery management unit and a positioning unit through a Controller Area Network (CAN) bus, and each vehicle control unit is provided with the other end connected to a corresponding vehicle-mounted wireless access point through a vehicle-mounted switch.
8. The station charging system of a vehicle of claim 7, further comprising:
and a plurality of platform switches provided corresponding to the plurality of platform chargers, wherein the charging control unit communicates with the corresponding platform chargers through the platform switches.
9. A station charging method for a vehicle, comprising the steps of:
acquiring state parameters of power batteries of all vehicles in a station area in real time;
judging whether vehicles needing to be charged exist according to the state parameters of all the power batteries;
if the vehicle needing to be charged exists, acquiring the position information of the vehicle needing to be charged and the position information of a rear vehicle adjacent to the vehicle needing to be charged;
acquiring a corresponding charging mode according to the position information of the vehicle needing to be charged and the position information of the rear vehicle adjacent to the vehicle;
and when the vehicle needing to be charged stops at the preset position of the corresponding station, controlling the platform charger of the station to charge the vehicle in a corresponding charging mode.
10. The station charging method for a vehicle according to claim 9, wherein the acquiring of the charging mode of the vehicle that needs to be charged based on the position information of the vehicle that needs to be charged and the position information of the rear vehicle adjacent thereto, comprises:
when the distance between the vehicle needing to be charged and the rear vehicle adjacent to the vehicle is larger than or equal to a preset value, the obtained charging mode is a constant-current constant-voltage charging mode;
and when the distance between the vehicle needing to be charged and the rear vehicle adjacent to the vehicle is smaller than the preset value, the acquired charging mode is a pulse charging mode.
11. The station charging method of a vehicle according to claim 10,
when the platform charger charges the power battery in the constant-current constant-voltage charging mode, firstly, multi-stage constant-current charging is carried out, and then, constant-voltage charging is carried out;
and when the platform charger charges the power battery in the pulse charging mode, performing pulse current intermittent charging.
12. The station charging method of claim 9, wherein the state parameter of the power battery comprises a remaining capacity of the power battery, and if the remaining capacity of the power battery of the vehicle is less than a capacity threshold, it is determined that the vehicle in which the power battery is located needs to be charged.
13. The station charging method for a vehicle according to claim 9, wherein the state parameter of the power battery comprises a voltage of the power battery, and if the voltage of the power battery of the vehicle is less than a voltage threshold, the vehicle where the power battery is located is determined to need charging.
14. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor executing the program to implement a station charging method for a vehicle as claimed in any one of claims 9 to 13.
15. A computer-readable storage medium, on which a computer program is stored, characterized in that the program is executed by a processor to implement the station charging method of a vehicle according to any of claims 9-13.
16. A computer program product, characterized in that instructions in the computer program product, when executed by a processor, implement the station charging method of a vehicle according to any of claims 9-13.
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