CN110758169A - Charging device, control method thereof and rail vehicle charging system - Google Patents

Charging device, control method thereof and rail vehicle charging system Download PDF

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Publication number
CN110758169A
CN110758169A CN201810835741.XA CN201810835741A CN110758169A CN 110758169 A CN110758169 A CN 110758169A CN 201810835741 A CN201810835741 A CN 201810835741A CN 110758169 A CN110758169 A CN 110758169A
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CN
China
Prior art keywords
switch
charger
charging
rail vehicle
pole
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Pending
Application number
CN201810835741.XA
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Chinese (zh)
Inventor
马栋茂
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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Publication date
Application filed by BYD Co Ltd filed Critical BYD Co Ltd
Priority to CN201810835741.XA priority Critical patent/CN110758169A/en
Priority to BR112021001325-3A priority patent/BR112021001325A2/en
Priority to PCT/CN2019/097832 priority patent/WO2020020326A1/en
Publication of CN110758169A publication Critical patent/CN110758169A/en
Pending legal-status Critical Current

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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
    • B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from 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
    • B60L2200/00—Type of vehicles
    • B60L2200/26—Rail vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention discloses a charging device, a control method thereof and a rail vehicle charging system, wherein the charging device comprises: the charger is used for providing electric energy required by charging for the rail vehicle; the current supply device is used for connecting a current collector of the rail vehicle when the rail vehicle is charged; one end of the first switch circuit is connected with the charger, the other end of the first switch circuit is connected with the current supply device, and the first switch circuit comprises a first switch component and a second switch component; the controller is respectively connected with the first switch component and the second switch component and used for controlling the first switch component to be closed according to the running direction of the rail vehicle, or controlling the second switch component to be closed so that the polarity of a charging port of the charging device is consistent with the polarity of the power battery, therefore, the phenomenon of wrong charging when the rail vehicle runs in different directions can be avoided, and the charging reliability of the rail vehicle is improved.

Description

Charging device, control method thereof and rail vehicle charging system
Technical Field
The invention relates to the technical field of railway vehicles, in particular to a charging device, a railway vehicle charging system and a control method of the charging device.
Background
In general, when a vehicle requiring energy supplied by a power battery, such as a rail vehicle, travels on a road, if the power battery needs to be charged, the vehicle is controlled to travel to a charging station for charging. However, since the direction of the vehicle arriving at the charging station is not fixed, for example, for a charging station in the east-west direction, when the vehicle arrives at the charging station, the traveling direction may be from west to east, and may also be from east to west, so that the situation that the charging positive and negative electrodes are connected reversely may occur during charging, which may cause damage to the power battery, and affect the safety of the vehicle.
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 object of the present invention is to provide a charging device to avoid the phenomenon of wrong charging when a rail vehicle travels in different directions, so as to improve the reliability of charging of the rail vehicle.
A second object of the present invention is to propose a rail vehicle charging system.
A third object of the present invention is to provide a control method of a charging device.
In order to achieve the above object, an embodiment of a first aspect of the present invention provides a charging device, including: the charger is used for providing electric energy required by charging for the rail vehicle; the current supply device is used for connecting a current extractor of the rail vehicle when the rail vehicle is charged; one end of the first switch circuit is connected with the charger, the other end of the first switch circuit is connected with the current supply device, and the first switch circuit comprises a first switch component and a second switch component; the controller is respectively connected with the first switch component and the second switch component, and is used for acquiring the traveling direction of the railway vehicle and controlling the first switch component to be closed or controlling the second switch component to be closed according to the traveling direction so as to enable the polarity of the charger to be consistent with the polarity of the current collector.
According to the charging device provided by the embodiment of the invention, when the rail vehicle is charged, the polarity of the direct-current side output end of the charger can be consistent with the positive and negative polarities of the power battery only by controlling the first switch component or the second switch component in the charging device, so that the phenomenon of wrong charging when the rail vehicle runs in different directions is avoided, the charging reliability of the rail vehicle is improved, and the structure of the rail vehicle does not need to be changed.
In order to achieve the above object, a second embodiment of the present invention provides a rail vehicle charging system, including: a rail vehicle; the charging device of the above embodiment is used for charging the rail vehicle.
According to the rail vehicle charging system provided by the embodiment of the invention, when the charging device in the embodiment is adopted to charge the rail vehicle, the polarity of the output end at the direct current side of the charger can be kept consistent with the positive and negative polarities of the power battery only by controlling the first switch component or the second switch component in the charging device, so that the phenomenon of wrong charging when the rail vehicle runs in different directions is avoided, the charging reliability of the rail vehicle is improved, and the structure of the rail vehicle does not need to be changed.
In order to achieve the above object, a third aspect of the present invention provides a control method for a charging device, where the charging device is the charging device according to the first aspect of the present invention, and the control method includes: acquiring the running direction of the rail vehicle; and controlling the first switch component to be closed or controlling the second switch component to be closed according to the driving direction, so that the polarity of the charger is consistent with that of the current collector.
According to the control method of the charging device, when the charging device charges the rail vehicle, the polarity of the output end of the direct current side of the charger can be consistent with the positive polarity and the negative polarity of the power battery only by controlling the first switch assembly or the second switch assembly in the charging device, the phenomenon that the rail vehicle is charged in different directions in a wrong mode is avoided, the charging reliability of the rail vehicle is improved, and the structure of the rail vehicle does not need to be changed.
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 block schematic diagram of a charging device according to one embodiment of the invention;
FIG. 2 is a schematic illustration of a rail vehicle in connection with a flow supply according to one example of the invention;
FIG. 3 is a schematic illustration of a rail vehicle in connection with a flow supply according to another example of the invention;
fig. 4 is a schematic structural diagram of a charging device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a charging device according to another embodiment of the present invention;
fig. 6-7 are schematic structural views of a charging device according to yet another embodiment of the present invention;
FIG. 8 is a flowchart of the operation of a charging device according to one embodiment of the present invention;
FIG. 9 is a block schematic diagram of a rail vehicle charging system according to an embodiment of the invention;
fig. 10 is a flowchart of a control method of a charging device 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 charging device, a rail vehicle charging system, and a control method of the charging device of the embodiments of the invention are described below with reference to the drawings.
Fig. 1 is a block schematic diagram of a charging device according to one embodiment of the present invention.
As shown in fig. 1, the charging device 100 includes a charger 10, a current supply device 20, a first switching circuit 30, and a controller 40.
Referring to fig. 1, a charger 10 is used to supply electric power required for charging a rail vehicle. The current supply device 20 is used for connecting a current collector of the rail vehicle when the rail vehicle is charged. One end of the first switching circuit 30 is connected to the charger 10, and the other end of the first switching circuit 30 is connected to the current supply device 20, and the first switching circuit 30 includes a first switching element 31 and a second switching element 32. The controller 40 is connected to the first switching assembly 31 and the second switching assembly 32, respectively. In this embodiment, referring to fig. 2 and 3, the controller 40 is configured to obtain a driving direction of the rail vehicle, and control the first switch component 31 to close or control the second switch component 32 to close according to the driving direction, so that the polarity of the charger 10 is consistent with the polarity of the current collector. For example, a first pole of the charger 10 is connected to a first pole of the current collector, and a second pole of the charger 10 is connected to a second pole of the current collector, wherein the first pole of the charger 10 and the first pole of the current collector have the same polarity, and the second pole of the charger 10 and the second pole of the current collector have the same polarity.
It should be understood that the flow extractor is connected to the power battery of the rail vehicle, and if the first pole of the flow extractor is a positive pole and the second pole of the flow extractor is a negative pole, the first pole of the flow extractor is connected to the positive pole of the power battery, and the second pole of the flow extractor is connected to the negative pole of the power battery.
Specifically, referring to fig. 2 and 3, the flow supply device 20 includes a first flow supply 21 and a second flow supply 22. When the traveling direction of the rail vehicle is a first direction, controlling the first switch component 31 to be closed, so that a first pole of the charger 10 is connected with a first pole of the current collector through the first current supply device 21, and a second pole of the charger 10 is connected with a second pole of the current collector through the second current supply device 22; and when the running direction of the rail vehicle is a second direction, controlling the second switch assembly 32 to be closed, so that the first pole of the charger 10 is connected with the first pole of the current collector through the second current supply device 22, and the second pole of the charger 10 is connected with the second pole of the current collector through the first current supply device 21. The second direction is opposite to the first direction.
Therefore, when the rail vehicle is charged, the polarity of the output end of the direct current side of the charger can be consistent with the positive and negative polarities of the power battery only by controlling the first switch assembly or the second switch assembly in the charging device, the phenomenon of wrong charging when the rail vehicle runs in different directions is avoided, the charging reliability of the rail vehicle is improved, and the structure of the rail vehicle does not need to be changed.
It should be noted that the charging device 100 is used to provide the rail vehicle with the dc power required for charging, and the dc side of the charging device is the side that is connected to the current collector and can output the dc power.
In one embodiment of the present invention, the first current supply 21 and the second current supply 22 may be charging slots disposed in running rails of a charging station in which the charging device 100 is disposed, and the current collectors of the rail vehicle may be charging blades. When the rail vehicle is parked at the charging station, the charging blade is connected to the flow supply device 20.
In order to facilitate the charging of the rail vehicle and to reduce or avoid unnecessary parking, the charging station can be arranged at a parking station of the rail vehicle. It should be noted that the connection position of the current supply device 20 and the current collector is the same when the rail vehicle is parked at the charging station in different directions.
In one embodiment of the present invention, as shown in fig. 4, the first switch assembly 31 includes a first switch KM1 and a second switch KM 2.
Referring to fig. 4, one end of a first switch KM1 is connected to a first pole of the charger 10, and the other end of the first switch KM1 is connected to the first current supplier 21 and forms a first node a; one end of the second switch KM2 is connected to the second pole of the charger 10, and the other end of the second switch KM2 is connected to the second current supply 22, and forms a second node b. Wherein the controller 40 is used to control the first switch KM1 and the second switch KM2 to be closed and opened.
Further, as shown in fig. 2, the second switch assembly 32 includes a third switch KM3 and a fourth switch KM 4.
Referring to fig. 2, one terminal of a third switch KM3 is connected to a first node a, and the other terminal of the third switch KM3 is connected to a second pole of the charger 10; one terminal of the fourth switch KM4 is connected to the first terminal of the charger 10, and the other terminal of the fourth switch KM4 is connected to the second node b. Wherein the controller 40 is used to control the third switch KM3 and the fourth switch KM4 to be turned on and off.
Wherein, the first switch KM1, the second switch KM2, the third switch KM3 and the fourth switch KM4 can adopt contactors.
In another embodiment of the present invention, as shown in fig. 6 and 7, the first switch assembly 31 and the second switch assembly 32 include: a first single pole double throw switch SW1 and a second single pole double throw switch SW 2.
Referring to fig. 6 and 7, the stationary terminal of the first single-pole double-throw switch SW1 is connected to the first current supply 21, the first movable terminal of the first single-pole double-throw switch SW1 is connected to the first pole of the charger 10, and the second movable terminal of the first single-pole double-throw switch SW1 is connected to the second pole of the charger 10; the stationary terminal of the second single pole double throw switch SW2 is connected to the second current supply 22, the first movable terminal of the second single pole double throw switch SW2 is connected to a first pole of the charger 10, and the second movable terminal of the second single pole double throw switch SW2 is connected to a second pole of the charger 10. The controller 40 is used for controlling the connection between the stationary end of the first single-pole double-throw switch SW1 and the stationary end of the second single-pole double-throw switch SW2 and the first movable end and the second movable end respectively.
Specifically, in this embodiment, the first switch assembly 31 includes a stationary terminal and a first moving terminal of a first single pole double throw switch SW1, and a stationary terminal and a second moving terminal of a second single pole double throw switch SW 2; the second switch assembly 32 includes a stationary terminal and a second moving terminal of a first single pole double throw switch SW1, and a stationary terminal and a first moving terminal of a second single pole double throw switch SW 2.
Optionally, the stationary terminal of the first single-pole double-throw switch SW1 can be further connected to the first pole of the charger 10, the first movable terminal of the first single-pole double-throw switch SW1 is connected to the first current collector 21, and the second movable terminal of the first single-pole double-throw switch SW1 is connected to the second current collector 22. Meanwhile, the stationary terminal of the second single-pole double-throw switch SW2 is connected to the second pole of the charger 10, the first movable terminal of the second single-pole double-throw switch SW2 is connected to the first current collector 21, and the second movable terminal of the second single-pole double-throw switch SW2 is connected to the second current collector 22. In this embodiment, the first switch assembly 31 includes a stationary terminal and a first moving terminal of a first single pole double throw switch SW1, and a stationary terminal and a second moving terminal of a second single pole double throw switch SW 2; the second switch assembly 32 includes a stationary terminal and a second moving terminal of a first single pole double throw switch SW1, and a stationary terminal and a first moving terminal of a second single pole double throw switch SW 2.
Further, as shown in fig. 5 to 7, the charging device 100 further includes a second switching circuit 50.
Referring to fig. 5-7, a second switching circuit 50 is connected between the first switching circuit 30 and the current supply device 20, wherein the controller 40 is also used to control the closing and opening of the second switching circuit 50.
Further, in one example of the present invention, as shown in fig. 5 to 7, the second switching circuit 50 includes a fifth switch SO1 and a sixth switch SO 2.
Referring to fig. 5 to 7, one end of the fifth switch SO1 is connected to the first node a, and the other end of the fifth switch SO1 is connected to the first current supplier 21; one end of the sixth switch SO2 is connected to the second node b, and the other end of the sixth switch SO2 is connected to the second current supply 22. Wherein the controller 40 is used for controlling the fifth switch SO1 and the sixth switch SO2 to be closed and opened.
The fifth switch SO1 and the sixth switch SO2 can both adopt contactors.
Further, as shown in fig. 5 to 7, the charging device 100 further includes a voltage detector 60. One end of the voltage detector 60 is connected to the first node a, the other end of the voltage detector 60 is connected to the second node b, and the voltage detector 60 is used to detect the polarity of the output voltage on the dc side of the charger 10.
In this embodiment, the controller 40 is further configured to control the fifth switch SO1 and the sixth switch SO2 to be closed when the driving direction of the rail vehicle is a first direction and the polarity of the output voltage is a first polarity, and to control the fifth switch SO1 and the sixth switch SO2 to be closed when the driving direction of the rail vehicle is a second direction and the polarity of the output voltage is a second polarity. Therefore, double guarantees can be provided for accurate connection of the power battery and the charging device.
Alternatively, the voltage detector 60 may employ a voltage hall sensor.
In one embodiment of the present invention, as shown in fig. 5 to 7, the charging device 100 further includes a diode D, wherein when the first terminal of the charger 10 is positive, an anode of the diode D is connected to the positive terminal of the charger 10, and a cathode of the diode D is connected to one end of the first switch KM1 and one end of the third switch KM3, respectively. In this way, due to the unidirectional conductivity of the diode D, the accuracy of the charging device 100 for charging rail vehicles can be further ensured.
The operation principle of the charging device 100 according to the embodiment of the present invention is described below with reference to fig. 2 to 3 and fig. 5 to 8.
As shown in fig. 2, when the rail vehicle travels to the right, the traveling direction signal is defined as 01. When the rail vehicle is charged in the charging station, the positive electrode of the current collector is connected to the positive electrode side of the power supply device 100, and the negative electrode of the current collector is connected to the negative electrode side of the power supply device 100.
As shown in fig. 3, when the rail vehicle travels leftward, the traveling direction signal is defined as 02. When the rail vehicle is charged in the charging station, the position of the current collector is changed when the positive electrode and the negative electrode of the current collector run rightwards compared with those shown in fig. 2, and the polarity of the positive electrode and the negative electrode of the power supply of the charging device 100 side is exchanged for normal charging, so that the charging requirement is met.
It can be seen that, after the running direction of the rail vehicle changes, when the charging station charges, the positive and negative poles of the current collector on the rail vehicle are exchanged, and simultaneously, the positive and negative poles of the charging device 100 are also exchanged synchronously, which benefits from the current commutation control strategy on the output side of the charger 10.
In one embodiment, as shown in fig. 5, when the rail vehicle is moving to the right, that is, the driving direction signal is 01, and the charger 10 interacts with information of the entire vehicle, the controller 40 controls the first switch KM1 and the second switch KM2 to be closed when the driving direction signal 01 sent by the entire vehicle is received, the voltage detector 50 collects positive voltage, and the charging terminal is consistent with the polarity of the battery, so that the charging terminal can be charged. When the rail vehicle is moving left, that is, the driving direction signal is 02, the controller 40 controls the third switch KM3 and the fourth switch KM4 to be turned on, the voltage collected by the voltage detector 50 is 0, and the charging terminal is consistent with the polarity of the battery, so that the rail vehicle can be charged.
Specifically, as shown in fig. 8, when the rail vehicle reaches the charging station, the entire vehicle sends a driving direction signal to the controller 40, and the controller 40 controls the corresponding contactor to pull in after receiving the interaction signal. At this time, the voltage signal collected by the voltage detector 50 should be the output voltage of the charger, but the fifth switch S01 and the sixth switch S02 are not attracted yet, and the charging loop is not turned on yet.
If the driving direction signal is 01, the rail vehicle is driven to the right, the controller 40 controls the first switch KM1 and the second switch KM2 to be closed, at this time, if the voltage detector 50 collects a positive voltage, the controller 40 controls the fifth switch SO1 and the sixth switch SO2 to be closed, and the charging device 100 outputs a voltage for charging. If the traveling direction signal is 02 and the rail vehicle travels left, the controller 40 controls the third switch KM3 and the fourth switch KM4 to be turned on, and at this time, if the voltage detected by the voltage detector 50 is 0, the controller 40 controls the fifth switch SO1 and the sixth switch SO2 to be turned on, and the charging device 100 outputs a voltage for charging.
It should be understood that after the first switch KM1 and the second switch KM2 are closed, if the voltage detector 50 collects that the voltage is 0, the controller 40 does not control the fifth switch SO1 and the sixth switch SO2 to be closed, and the charging is ended. Accordingly, after the third and fourth switches KM3 and KM4 are closed, if the voltage detector 50 collects a positive voltage, the controller 40 does not control the fifth and sixth switches SO1 and SO2 to be closed, and the charging is completed.
In another embodiment, as shown in fig. 6, when the rail vehicle is moving to the right, that is, when the driving direction signal is 01, and the charger 10 interacts with the information of the entire vehicle, the controller 40 controls the stationary terminal of the first single-pole double-throw switch SW1 to be connected to the first movable terminal, the stationary terminal of the second single-pole double-throw switch SW2 to be connected to the second movable terminal, and the voltage detector 50 collects positive voltages, and the charging terminal is in accordance with the polarity of the battery, so that the charging can be performed. As shown in fig. 7, when the rail vehicle is traveling to the left, that is, the traveling direction signal is 02, the controller 40 controls the stationary terminal of the first single-pole double-throw switch SW1 to be connected to the second movable terminal, the stationary terminal of the second single-pole double-throw switch SW2 to be connected to the first movable terminal, the voltage collected by the voltage detector 50 is 0, and the charging terminal is in accordance with the polarity of the battery, so that the rail vehicle can be charged.
Specifically, as shown in fig. 8, when the rail vehicle reaches the charging station, the entire vehicle sends a driving direction signal to the controller 40, and the controller 40 receives the interaction signal and controls the stationary terminals of the first single-pole double-throw switch SW1 and the second single-pole double-throw switch SW2 to be connected with the corresponding movable terminals. At this time, the voltage signal collected by the voltage detector 50 should be the output voltage of the charger, but the fifth switch S01 and the sixth switch S02 are not attracted yet, and the charging loop is not turned on yet.
If the traveling direction signal is 01, the rail vehicle travels to the right, the controller 40 controls the stationary end of the first single-pole double-throw switch SW1 to be connected with the first moving end, the stationary end of the second single-pole double-throw switch SW2 to be connected with the second moving end, at this time, if the voltage detector 50 collects a positive voltage, the controller 40 controls the fifth switch SO1 and the sixth switch SO2 to be closed, and the charging device 100 outputs a voltage for charging. If the traveling direction signal is 02, the rail vehicle travels leftwards, the controller 40 controls the stationary end of the first single-pole double-throw switch SW1 to be connected with the second movable end, the stationary end of the second single-pole double-throw switch SW2 to be connected with the first movable end, at this time, if the voltage acquired by the voltage detector 50 is 0, the controller 40 controls the fifth switch SO1 and the sixth switch SO2 to be closed, and the charging device 100 outputs voltage for charging.
It should be understood that after the stationary terminal of the first single-pole double-throw switch SW1 is connected to the first moving terminal and the stationary terminal of the second single-pole double-throw switch SW2 is connected to the second moving terminal, if the voltage detected by the voltage detector 50 is 0, the controller 40 does not control the fifth switch SO1 and the sixth switch SO2 to be closed, and the charging is finished. Accordingly, after the stationary terminal of the first single-pole double-throw switch SW1 is connected to the second movable terminal and the stationary terminal of the second single-pole double-throw switch SW2 is connected to the first movable terminal, if the voltage detector 50 collects a positive voltage, the controller 40 does not control the fifth switch SO1 and the sixth switch SO2 to be closed, and the charging is completed.
In summary, according to the charging device of the embodiment of the invention, when the rail vehicle is charged, only the first switch component or the second switch component in the charging device needs to be controlled, so that the polarity of the output end of the charger on the direct current side can be kept consistent with the positive and negative polarities of the power battery, the phenomenon of wrong charging when the rail vehicle runs in different directions is avoided, the charging reliability of the rail vehicle is improved, and the structure of the rail vehicle does not need to be changed.
Fig. 9 is a block schematic diagram of a rail vehicle charging system according to an embodiment of the invention.
As shown in fig. 9, the rail vehicle charging system 1000 includes a rail vehicle 200 and the charging device 100 according to the above-described embodiment of the present invention.
In this embodiment, the rail vehicle 200 includes a flow collector 210. The current supply device of the charging device 100 is used for connecting the current collector 210, and the charging device 100 is used for charging the rail vehicle 200.
It should be noted that, for other specific implementations of the rail vehicle charging system according to the embodiment of the present invention, reference may be made to specific implementations of the charging device according to the above-described embodiment of the present invention.
According to the rail vehicle charging system provided by the embodiment of the invention, when the charging device in the embodiment is adopted to charge the rail vehicle, the polarity of the output end at the direct current side of the charger can be kept consistent with the positive and negative polarities of the power battery only by controlling the first switch component or the second switch component in the charging device, so that the phenomenon of wrong charging when the rail vehicle runs in different directions is avoided, the charging reliability of the rail vehicle is improved, and the structure of the rail vehicle does not need to be changed.
Based on the charging device of the above embodiment, the invention also provides a control method of the charging device.
Fig. 10 is a flowchart of a control method of a charging device according to an embodiment of the present invention.
As shown in fig. 10, the control method of the charging device includes the steps of:
and S101, acquiring the running direction of the rail vehicle.
And S102, controlling the first switch component to be closed or controlling the second switch component to be closed according to the driving direction so as to enable the polarity of the charger to be consistent with the polarity of the current collector.
In this embodiment, the current supply means in the charging device includes a first current supply and a second current supply.
Specifically, if the traveling direction is the first direction, the first switch component is controlled to be closed, so that the first pole of the charger is connected with the first pole of the current taking device of the railway vehicle through the first current supply device, and the second pole of the charger is connected with the second pole of the current taking device through the second current supply device. If the driving direction is the second direction, the second switch component is controlled to be closed, so that the first pole of the charger is connected with the first pole of the current collector through the second current supply device, and the second pole of the charger is connected with the second pole of the current collector through the first current supply device.
In one embodiment of the invention, the charging device further comprises a second switching circuit connected between the first switching circuit and the current supply device, and after the first switching component or the second switching component is closed, the polarity of the output voltage on the direct current side of the charging device is acquired, and whether to control the second switching circuit to be closed is determined according to the polarity of the output voltage.
For other specific embodiments of the control method of the charging device according to the embodiment of the present invention, reference may be made to the specific embodiments of the charging device according to the above-described embodiment of the present invention.
According to the control method of the charging device, when the charging device charges the rail vehicle, the polarity of the output end of the direct current side of the charger can be consistent with the positive polarity and the negative polarity of the power battery only by controlling the first switch assembly or the second switch assembly in the charging device, the phenomenon that the rail vehicle is charged in different directions in a wrong mode is avoided, the charging reliability of the rail vehicle is improved, and the structure of the rail vehicle does not need to be changed.
It should be noted that in the description of the present specification, reference to the description of the term "one embodiment", "some embodiments", "an example", "a specific example", or "some examples", etc., means 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 present 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.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., 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. 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.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
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.
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 (12)

1. A charging device, comprising:
the charger is used for providing electric energy required by charging for the rail vehicle;
the current supply device is used for connecting a current extractor of the rail vehicle when the rail vehicle is charged;
one end of the first switch circuit is connected with the charger, the other end of the first switch circuit is connected with the current supply device, and the first switch circuit comprises a first switch component and a second switch component;
the controller is respectively connected with the first switch component and the second switch component, and is used for acquiring the traveling direction of the railway vehicle and controlling the first switch component to be closed or controlling the second switch component to be closed according to the traveling direction so as to enable the polarity of the charger to be consistent with the polarity of the current collector.
2. The charging device of claim 1, wherein the current supply device comprises a first current supply and a second current supply, and the controller is specifically configured to:
when the traveling direction of the railway vehicle is a first direction, controlling the first switch component to be closed so that a first pole of the charger is connected with a first pole of the current collector through the first current supply device, and a second pole of the charger is connected with a second pole of the current collector through the second current supply device, wherein the first pole of the charger and the first pole of the current collector have the same polarity, and the second pole of the charger and the second pole of the current collector have the same polarity; and
and when the running direction of the railway vehicle is a second direction, controlling the second switch component to be closed so as to enable the first pole of the charger to be connected with the first pole of the current collector through the second current supply device, and the second pole of the charger to be connected with the second pole of the current collector through the first current supply device, wherein the second direction and the first direction are opposite.
3. The charging device of claim 2, wherein the first switching component comprises:
one end of the first switch is connected with a first pole of the charger, and the other end of the first switch is connected with the first current supply device and forms a first node;
one end of the second switch is connected with a second pole of the charger, and the other end of the second switch is connected with the second current supply and forms a second node;
wherein the controller is configured to control the first switch and the second switch to be closed and opened.
4. A charging arrangement as claimed in claim 3, in which the second switch assembly comprises:
one end of the third switch is connected with the first node, and the other end of the third switch is connected with a second pole of the charger;
one end of the fourth switch is connected with the first pole of the charger, and the other end of the fourth switch is connected with the second node;
wherein the controller is configured to control the third switch and the fourth switch to be turned on and off.
5. The charging device of claim 4, further comprising:
a second switching circuit connected between the first switching circuit and the current supply device;
wherein the controller is further configured to control the closing and opening of the second switching circuit.
6. The charging device of claim 5, wherein the second switching circuit comprises:
one end of the fifth switch is connected with the first node, and the other end of the fifth switch is connected with the first current supply device;
one end of the sixth switch is connected with the second node, and the other end of the sixth switch is connected with the second current supply device;
wherein the controller is configured to control the fifth switch and the sixth switch to be turned on and off.
7. The charging device of claim 6, further comprising:
one end of the voltage detector is connected with the first node, the other end of the voltage detector is connected with the second node, and the voltage detector is used for detecting the polarity of output voltage on the direct current side of the charger;
the controller is further configured to control the fifth switch and the sixth switch to be turned on and off when the driving direction of the rail vehicle is a first direction and the polarity of the output voltage is a first polarity, and control the fifth switch and the sixth switch to be turned on and off when the driving direction of the rail vehicle is a second direction and the polarity of the output voltage is a second polarity.
8. The charging device of claim 7, wherein the voltage detector is a voltage hall sensor.
9. The charging apparatus as claimed in claim 4, further comprising a diode, wherein when the first electrode of the charger is an anode, an anode of the diode is connected to the anode of the charger, and a cathode of the diode is connected to one end of the first switch and one end of the third switch, respectively.
10. A rail vehicle charging system, comprising:
a rail vehicle comprising a flow extractor;
the charging device according to any one of claims 1 to 9, which is connected to the tapping device via the current supply device, the charging device being used for charging the rail vehicle.
11. A control method of a charging device according to any one of claims 1 to 9, characterized by comprising the steps of:
acquiring the running direction of the rail vehicle;
and controlling the first switch component to be closed or controlling the second switch component to be closed according to the driving direction, so that the polarity of the charger is consistent with that of the current collector.
12. The control method of a charging device according to claim 11, wherein the charging device further includes a second switching circuit connected between the first switching circuit and the current supply device, the control method further comprising:
and after the first switch component or the second switch component is closed, the polarity of the output voltage at the direct current side of the charging device is also acquired, and whether the second switch circuit is controlled to be closed or not is determined according to the polarity of the output voltage.
CN201810835741.XA 2018-07-26 2018-07-26 Charging device, control method thereof and rail vehicle charging system Pending CN110758169A (en)

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BR112021001325-3A BR112021001325A2 (en) 2018-07-26 2019-07-26 charging apparatus and method of controlling it and rail vehicle charging system
PCT/CN2019/097832 WO2020020326A1 (en) 2018-07-26 2019-07-26 Charging apparatus and control method therefor, and rail vehicle charging system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111775741A (en) * 2020-07-10 2020-10-16 中车株洲电力机车有限公司 Rail vehicle, charging system thereof and charging polarity adjusting method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008139522A1 (en) * 2007-04-27 2008-11-20 Takashi Umemori Vehicle operation system, charge system and vehicle
CN102496923A (en) * 2011-11-14 2012-06-13 株洲南车时代电气股份有限公司 Input circuit with reverse connection preventing protection
CN105914824A (en) * 2016-05-13 2016-08-31 深圳市科陆电子科技股份有限公司 Direct current non-polarized frame type charging device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK2616268T5 (en) * 2010-09-14 2019-04-29 Innovametall Stahl Und Metallbau Ges M B H Device for recharging electric batteries for single track vehicles, especially bicycles having an electric auxiliary motor
CN102891613A (en) * 2011-07-21 2013-01-23 台达电子企业管理（上海）有限公司 Alternating current (AC) to direct current (DC) power converter and DC charging station
CN104242421A (en) * 2013-06-20 2014-12-24 中国北车股份有限公司 Railway vehicle charger system and railway vehicle
CN103545901B (en) * 2013-11-14 2016-01-27 北京先行电气股份有限公司 The high-power charging device of a kind of tramcar
CN106505679A (en) * 2016-11-28 2017-03-15 中车大连电力牵引研发中心有限公司 Rail vehicle charger
CN206401922U (en) * 2016-11-28 2017-08-11 中车大连电力牵引研发中心有限公司 Rail vehicle charger

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008139522A1 (en) * 2007-04-27 2008-11-20 Takashi Umemori Vehicle operation system, charge system and vehicle
CN102496923A (en) * 2011-11-14 2012-06-13 株洲南车时代电气股份有限公司 Input circuit with reverse connection preventing protection
CN105914824A (en) * 2016-05-13 2016-08-31 深圳市科陆电子科技股份有限公司 Direct current non-polarized frame type charging device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111775741A (en) * 2020-07-10 2020-10-16 中车株洲电力机车有限公司 Rail vehicle, charging system thereof and charging polarity adjusting method

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