CN110549892A - Charging method and charging system for rail transit vehicle - Google Patents

Charging method and charging system for rail transit vehicle Download PDF

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Publication number
CN110549892A
CN110549892A CN201810555018.6A CN201810555018A CN110549892A CN 110549892 A CN110549892 A CN 110549892A CN 201810555018 A CN201810555018 A CN 201810555018A CN 110549892 A CN110549892 A CN 110549892A
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China
Prior art keywords
charging
vehicle
power supply
control unit
energy storage
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CN201810555018.6A
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CN110549892B (en
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不公告发明人
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BYD Co Ltd
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BYD Co Ltd
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Priority to CN201810555018.6A priority Critical patent/CN110549892B/en
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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44Methods for charging or discharging
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L2200/00Type of vehicles
    • B60L2200/26Rail vehicles
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies relating to charging of electric vehicles
    • Y02T90/12Electric charging stations

Abstract

The invention discloses a charging method and a charging system for rail transit vehicles, wherein the charging method comprises the following steps: when a vehicle arrives at a station, receiving a charging instruction sent by a vehicle-mounted central control unit through a power carrier; and controlling the power supply equipment to charge the vehicle-mounted energy storage device according to the charging instruction. Therefore, the charging method provided by the embodiment of the invention not only can ensure that the rail transit vehicle is convenient and reliable to charge, but also is convenient to operate, so that the charging process of the rail transit vehicle is optimized.

Description

Charging method and charging system for rail transit vehicle
Technical Field
The invention relates to the technical field of rail transit, in particular to a charging method of a rail transit vehicle, a station control unit, a vehicle-mounted central control unit and a charging system of the rail transit vehicle.
Background
In the related technology, a tram station charging system is disclosed, which comprises a suspension type contact net, an insulator, and an insulator support post fixed on a platform, wherein the suspension type contact net is suspended on the insulator support post through the insulator and is insulated by the insulator, the end of the contact net close to a station entrance is bent upwards into an arc shape, the highest point of the arc shape is higher than the lifting height of a tram pantograph, the extension length of the contact net in the station exit direction is greater than the extension length of the tram in the station entrance direction, in addition, a signal transmitter is arranged in front of the station entrance direction of the contact net, a signal receiver is arranged on the tram, when the signal receiver receives the signal of the signal transmitter, the tram decelerates in advance and lifts the pantograph, so that the pantograph and the contact net can safely and reliably contact, and the capacity of a vehicle-mounted energy storage device is, thereby reducing the dead weight of the tramcar and saving energy.
However, this form of charging system has the following problems: firstly, the station type charging system of the tramcar adopts a contact network type for power supply, is an overhead rigid network, has poor elasticity, is easy to cause an arc discharge problem between a pantograph and a contact network, and has more insulator faults and large environmental influence due to hardness; secondly, according to the station area type charging system for the tramcar, a supporting column and a contact network are erected beside a platform by adopting a contact network type power supply, so that the voltage level is high, the danger coefficient is high, and the urban attractiveness is influenced.
Disclosure of Invention
the present invention is directed to solving, at least to some extent, one of the technical problems in the art described above.
therefore, a first object of the present invention is to provide a method for charging a rail transit vehicle, which not only can facilitate and reliably charge the rail transit vehicle, but also is convenient to operate, so that the charging process of the rail transit vehicle is optimized.
The second purpose of the invention is to provide another charging method for rail transit vehicles.
A third object of the present invention is to propose a station control unit.
a fourth object of the invention is to propose an on-board central control unit.
A fifth object of the present invention is to provide a charging system for rail transit vehicles.
A sixth object of the present invention is to provide a charging method of a charging system of a rail transit vehicle.
In order to achieve the above object, a first embodiment of the present invention provides a charging method for a rail transit vehicle, including the following steps: when a vehicle arrives at a station, receiving a charging instruction sent by a vehicle-mounted central control unit through a power carrier; and controlling the power supply equipment to charge the vehicle-mounted energy storage device according to the charging instruction.
According to the charging method of the rail transit vehicle, when the vehicle arrives at the station, the charging instruction sent by the vehicle-mounted central control unit through the power carrier wave is received, and the power supply equipment is controlled to charge the vehicle-mounted energy storage device according to the charging instruction. Therefore, the charging method not only can enable the rail transit vehicle to be charged conveniently and reliably, but also is convenient to operate, and enables the charging flow of the rail transit vehicle to be optimized.
In addition, the charging method for the rail transit vehicle according to the embodiment of the invention may further have the following additional technical features:
In an embodiment of the present invention, the receiving a charging instruction sent by an on-board central control unit through a power carrier includes: and monitoring the charging instruction on a preset carrier frequency to acquire the charging instruction.
In an embodiment of the present invention, before controlling, according to the charging instruction, the power supply device to charge the vehicle-mounted energy storage device, the method further includes: acquiring a coding algorithm of the vehicle-mounted central control unit according to the identification information of the vehicle; and decoding the charging instruction by adopting a decoding algorithm matched with the coding algorithm.
In an embodiment of the present invention, after decoding the charging instruction, the method further includes: acquiring state information of the energy storage device; according to the state information, judging whether the energy storage device needs to be charged or not, and controlling a path between power supply equipment and a charging rail arranged on a track to be conducted when the energy storage device needs to be charged, so that the energy storage device is charged through the charging rail; when charging, the charging knife on the vehicle extends out and is electrically connected with the charging rail; the charging knife is electrically connected with the energy storage device.
In an embodiment of the present invention, the charging method for rail transit vehicles further includes: when the vehicle leaves the station, a charging end instruction sent by the vehicle-mounted central control unit through a power carrier wave is received, and the access is controlled to be disconnected according to the charging end instruction.
In an embodiment of the present invention, before receiving a charging instruction sent by an on-board central control unit through a power carrier when a vehicle arrives at a station, the method further includes: receiving arrival reminding information sent by the vehicle-mounted central control unit through the power line carrier; controlling to pre-charge the power supply equipment according to the arrival reminding information; and stopping precharging the power supply equipment after receiving the charging command.
In order to achieve the above object, a second embodiment of the present invention provides a charging method for a rail transit vehicle, including the following steps: when the vehicle arrives at the station, generating a charging instruction; and sending a charging instruction to power supply equipment through the power carrier so that the power supply equipment charges the vehicle-mounted energy storage device according to the charging instruction.
According to the charging method of the rail transit vehicle, when the vehicle arrives at the station, a charging instruction is generated, and the charging instruction is sent to the power supply equipment through the power carrier, so that the power supply equipment charges the vehicle-mounted energy storage device according to the charging instruction. Therefore, the charging method not only can enable the rail transit vehicle to be charged conveniently and reliably, but also is convenient to operate, and enables the charging flow of the rail transit vehicle to be optimized.
In addition, the charging method for the rail transit vehicle according to the embodiment of the invention may further have the following additional technical features:
In an embodiment of the present invention, before the generating the charging instruction, the method further includes: acquiring state information of the energy storage device; and determining that the energy storage device needs to be charged according to the state information.
In an embodiment of the present invention, after the generating the charging instruction, the method further includes: controlling a charging knife on the vehicle to extend out and be electrically connected with a charging rail arranged on the track; when the charging device is charged, the charging knife is electrically connected with the energy storage device, and the charging rail is electrically connected with the power supply equipment.
In an embodiment of the present invention, the generating the charging instruction includes: coding the charging instruction by adopting a coding algorithm stored in the vehicle-mounted central control unit; the sending of the charging instruction to the power supply device through the power carrier includes: and sending the coded charging instruction to the power supply equipment through a power carrier wave of a preset carrier frequency.
In an embodiment of the present invention, the charging method for rail transit vehicles further includes: when the vehicle leaves the station, the charging knife of the vehicle is controlled to be disconnected with the charging rail.
In an embodiment of the present invention, before generating the charging instruction when the vehicle arrives at the station, the method further includes: and sending arrival reminding information to the power supply equipment through the power carrier so that the power supply equipment performs pre-charging according to the arrival reminding information.
In order to achieve the above object, a third embodiment of the present invention provides a station control unit, including: the receiving module is used for receiving a charging instruction sent by the vehicle-mounted central control unit through a power carrier when a vehicle arrives; and the charging module is used for controlling the power supply equipment to charge the vehicle-mounted energy storage device according to the charging instruction.
according to the station control unit provided by the embodiment of the invention, when a vehicle arrives at the station, the receiving module receives the charging instruction sent by the vehicle-mounted central control unit through the power carrier, and the charging module controls the power supply equipment to charge the vehicle-mounted energy storage device according to the charging instruction. Therefore, the rail transit vehicle charging device can not only enable the rail transit vehicle to be convenient and reliable to charge, but also be convenient to operate, and enables the charging process of the rail transit vehicle to be optimized.
in order to achieve the above object, a fourth aspect of the present invention provides an in-vehicle central control unit, including: the generating module is used for generating a charging instruction when the vehicle arrives at the station; the transmitting module is used for transmitting a charging instruction to the power supply equipment through the power carrier so that the power supply equipment can charge the vehicle-mounted energy storage device according to the charging instruction.
According to the vehicle-mounted central control unit provided by the embodiment of the invention, the generation module generates the charging instruction when a vehicle arrives, and controls the sending module to send the charging instruction to the power supply equipment through the power carrier, so that the power supply equipment charges the vehicle-mounted energy storage device according to the charging instruction. Therefore, the rail transit vehicle charging device can not only enable the rail transit vehicle to be convenient and reliable to charge, but also be convenient to operate, and enables the charging process of the rail transit vehicle to be optimized.
In order to achieve the above object, a fifth embodiment of the present invention provides a charging system for rail transit vehicles, including: a first device arranged on a vehicle and a second device arranged at a station; the first device and the second device communicate over a power carrier; wherein the first apparatus comprises: the on-vehicle central control unit and the energy storage device according to the fourth aspect embodiment of the invention, the second device includes: a station control unit and a power supply apparatus as described in the embodiment of the third aspect of the present invention.
According to the rail transit vehicle charging system provided by the embodiment of the invention, the first device arranged on the vehicle and the second device arranged at the station are arranged, so that the rail transit vehicle is convenient and reliable to charge and convenient to operate, and the charging process of the rail transit vehicle is optimized.
In order to achieve the above object, a sixth aspect of the present invention provides a charging method for a charging system of a rail transit vehicle, including the following steps: when a vehicle arrives at a station, the vehicle-mounted central control unit generates a charging instruction and transmits the charging instruction to the power supply equipment through a power carrier; and the station control unit receives a charging instruction sent by the vehicle-mounted central control unit through a power line carrier, and controls the power supply equipment to charge the energy storage device according to the charging instruction.
According to the charging method of the charging system of the rail transit vehicle, when the vehicle arrives at the station, the vehicle-mounted central control unit generates the charging instruction and sends the charging instruction to the power supply equipment through the power carrier, and then the station control unit receives the charging instruction sent by the vehicle-mounted central control unit through the power carrier and controls the power supply equipment to charge the energy storage device according to the charging instruction. Therefore, the rail transit vehicle charging device can not only enable the rail transit vehicle to be convenient and reliable to charge, but also be convenient to operate, and enables the charging process of the rail transit vehicle to be optimized.
advantages of additional aspects 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 flow chart of a method of charging a rail transit vehicle according to one embodiment of the invention;
FIG. 2 is a structural topology of a rail transit vehicle charging system according to one embodiment of the present invention;
Fig. 3 is a flow chart of a method of charging a rail transit vehicle according to another embodiment of the invention;
Fig. 4 is a block schematic diagram of a station control unit according to an embodiment of the present invention;
FIG. 5 is a block schematic diagram of an on-board central control unit according to one embodiment of the present invention;
FIG. 6 is a block schematic diagram of a rail transit vehicle charging system according to one embodiment of the present invention; and
Fig. 7 is a flowchart of a charging method of a charging system of a rail transit 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 charging method of a rail transit vehicle, a station control unit, an on-vehicle central control unit, a charging system of a rail transit vehicle, an electronic device, and a non-transitory computer-readable storage medium according to embodiments of the present invention are described below with reference to the accompanying drawings.
Fig. 1 is a flowchart of a method of charging a rail transit vehicle according to one embodiment of the present invention. In embodiments of the invention, the vehicles for rail transit may include vehicles for straddle monorail, vehicles for light urban rail transit, and the like.
It should be noted that the particularity of the rail transit described in this embodiment is that the vehicle travels on a fixed route, and the vehicle operation control parameters on the route, the environment of the route, and the position of the surrounding building are relatively stable.
As shown in fig. 1, the charging method for rail transit vehicles according to the embodiment of the present invention includes the following steps:
and S1, when the vehicle arrives at the station, receiving a charging instruction sent by the vehicle-mounted central control unit through the power carrier wave.
In an embodiment of the present invention, receiving the charging instruction sent by the vehicle-mounted central control unit through the power carrier may include monitoring the charging instruction at a preset carrier frequency to obtain the charging instruction. The preset carrier frequency can be calibrated according to actual conditions, and the preset carrier frequency can be the same as the carrier frequency of the power carrier signal sent by the vehicle.
specifically, as shown in fig. 2, the control unit of the Power supply device may control a built-in PLC (Power line Communication, Power carrier) device to monitor the charging command at a preset carrier frequency, that is, broadcast and monitor. When a vehicle running on a fixed line enters a monitoring (broadcast) range of a PLC device built in the power supply apparatus (for example, the vehicle arrives at a station), if an on-board central Control unit ecu (electronic Control unit) of the vehicle generates a charging command, the PLC device built in the vehicle is controlled to transmit the charging command to the power supply apparatus (for example, the power supply apparatus provided at the station) through a power carrier.
the PLC device built in the power supply apparatus can monitor the power carrier signal (i.e., the power carrier signal including the charging command) transmitted by the PLC device built in the vehicle.
in other embodiments of the present invention, a PLC device built in a power supply apparatus may be installed in the middle of a platform, and the PLC device may be plural, thereby increasing a communication range of a power carrier.
And S2, controlling the power supply equipment to charge the vehicle-mounted energy storage device according to the charging instruction. Wherein the energy storage device may comprise an on-board battery.
It should be noted that the charging instruction described in this embodiment may include state information of an energy storage device in the vehicle corresponding to the charging instruction (for example, current electric storage amount information of the on-vehicle battery, usage information of the on-vehicle battery, and the like). Specifically, as shown in fig. 2, before generating the charging instruction, the vehicle-mounted central control unit of the vehicle may obtain current information of the power storage amount of the vehicle-mounted battery, information of the usage condition of the vehicle-mounted battery, and determine whether the energy storage device needs to be charged according to the information, and after determining that the energy storage device needs to be charged, may generate the charging instruction according to the information and a preset encoding algorithm. The preset encoding algorithm may be calibrated according to actual conditions, for example, the preset encoding algorithm may be set in a storage space of the vehicle by a manufacturer of the vehicle when the vehicle leaves a factory, or may be set in advance by a user according to an operation specification.
Further, before controlling the power supply equipment to charge the vehicle-mounted energy storage device according to the charging instruction, the method can also comprise the steps of acquiring a coding algorithm of the vehicle-mounted central control unit according to the identification information of the vehicle, and decoding the charging instruction by adopting a decoding algorithm matched with the coding algorithm.
After the charging instruction is decoded, the state information of the energy storage device can be acquired, whether the energy storage device needs to be charged is judged according to the state information, and when the energy storage device needs to be charged is judged, the controllable power supply equipment is conducted with a path between charging rails arranged on the rail, so that the energy storage device is charged through the charging rails. When charging, the charging knife on the vehicle stretches out and is electrically connected with the charging rail, and the charging knife is electrically connected with the energy storage device.
Specifically, as shown in fig. 2, the PLC device built in the power supply device may monitor a charging instruction sent by the PLC device built in the vehicle, and then send the charging instruction to the control unit of the power supply device through an RJ45/RJ232 interface or a CAN (Controller Area Network). After receiving the charging instruction, the control unit may obtain, through the power carrier, identification information of the vehicle that sent the charging instruction, and obtain, according to the identification information of the vehicle, a coding algorithm (i.e., the above-mentioned preset coding algorithm) of an on-vehicle central control unit of the vehicle.
Then, the control unit can call out a corresponding relation table of the coding algorithm and the decoding algorithm from the storage space of the power supply equipment, acquire the decoding algorithm matched with the coding algorithm according to the table, and decode the charging instruction with the decoding algorithm to acquire the state information of the energy storage device of the vehicle.
then, the control unit may determine whether the energy storage device needs to be charged according to the state information of the energy storage device of the vehicle (e.g., current electric energy storage information of the on-board battery, usage information of the on-board battery, etc.), and when it is determined that the energy storage device needs to be charged, may control the power supply device to be in communication with a path between the charging rails disposed on the track, so as to charge the on-board battery in the energy storage device through the charger and the charging rails.
It should be noted that, after generating the charging command, the vehicle-mounted central control unit of the vehicle described in this embodiment may control the charging blade on the vehicle to extend out and electrically connect to the charging rail disposed on the track, where the charging blade is electrically connected to the energy storage device during charging and the charging rail is electrically connected to the power supply equipment.
In addition, the charging rail described in the embodiment is arranged in the rail beam in front of the platform, the length only needs to be matched with the charging blade, the charging rail does not need to be long, the cost can be greatly saved, the charging rail is directly powered by power supply equipment of the platform, the wiring is short, the risk caused by overlong lines can be reduced, and the safety performance is good.
the following describes in detail how the energy storage device of the vehicle is charged by means of the charging blade and the charging rail:
When the energy storage device needs to be charged and the vehicle arrives at the station, the vehicle-mounted central control unit of the vehicle can control the charging knife to extend out and be electrically connected with the charging rail arranged on the rail, the control unit of the power supply equipment in the station can control the power supply equipment to be conducted with a passage between the charging rails arranged on the rail, and the charging rail is electrically connected with the power supply equipment of the station. It should be noted that the term "vehicle arrives at a station" is understood to mean a state where the vehicle enters a corresponding station, and the vehicle may run slowly or stop. When the vehicle arrives at a station, the charging knife is electrically connected with the charging rail to realize the electrical connection of the energy storage device and the power supply equipment, so that the power supply equipment can be controlled to charge the energy storage device.
further, the charging method of the rail transit vehicle can further comprise the step of receiving a charging end instruction sent by the vehicle-mounted central control unit through the power carrier when the vehicle leaves the station, and controlling the path to be disconnected according to the charging end instruction.
Specifically, when the vehicle leaves the station, the on-board central control unit of the vehicle may transmit a charge end instruction through the power carrier, and may control the charging blade to retract to disconnect the electrical connection with the charging rail provided on the track. After receiving the charging end command, the control unit in the power supply equipment arranged on the platform can control the path between the power supply equipment and the charging rail arranged on the track to be disconnected according to the charging end command, and close the power supply equipment. It should be noted that "vehicle leaving" here may be understood as a state when the vehicle leaves the station, for example, from a vehicle stop state to a vehicle acceleration operation stage. Therefore, the connection between the charging knife and the charging rail is disconnected under the control, so that the energy storage device is disconnected from the power supply equipment, and the charging of the energy storage device can be conveniently finished.
That is, when it is determined that the energy storage device needs to be charged and the vehicle arrives at the station, the charging knife can be electrically connected with the charging rail and control the power supply device to charge the energy storage device; and when the station leaves the station, the charging knife of the vehicle is controlled to be disconnected from the electric connection with the charging rail, so that the charging of the energy storage device is finished. Therefore, the rail transit vehicle can be charged conveniently and reliably. In addition, the charging device (such as the charging knife and the charging rail) of the rail transit vehicle is simple in structure, good in current collection stability, high in reliability, high in safety and convenient to operate, and the charging process of the rail transit vehicle is optimized.
In addition. In the embodiment of the invention, when the energy storage device is judged not to be charged and the vehicle arrives at the station, the vehicle-mounted central control unit of the vehicle can control the charging knife not to extend out, so that the energy storage device is not electrically connected with the power supply equipment and is not charged. Therefore, the problem of charging the energy storage device when the electric quantity of the energy storage device is sufficient can be avoided, and the charging of the rail transit vehicle is more intelligent.
In an embodiment of the invention, when a vehicle arrives at a station, before receiving a charging instruction sent by the vehicle-mounted central control unit through the power carrier, the method may further include receiving arrival reminding information sent by the vehicle-mounted central control unit through the power carrier, controlling to precharge the power supply equipment according to the arrival reminding information, and stopping precharging the power supply equipment after receiving the charging instruction.
It should be noted that "pre-charging" described herein may be understood as charging a large capacitor on the output side of the power supply equipment of the station, so that the input side of the power supply equipment is charged, and the output side outputs a voltage, but does not output a current, thereby reducing spark arcing when the charging blade contacts the charging rail, reducing impact, and increasing safety. Thus, the charging of the vehicle to the station can be prepared, and the charging preparation time of the power supply equipment is shortened.
Specifically, a vehicle running on a fixed line may detect a distance from the vehicle to a station to which the vehicle is about to arrive by using a camera or a distance sensor, and when the distance from the vehicle to the station to which the vehicle is about to arrive is detected to be less than a preset distance (for example, 100 meters), the vehicle-mounted central control unit of the vehicle may generate the station arrival reminding information, and may control the PLC device on the vehicle to transmit the station arrival reminding information to the power supply apparatus provided on the station by using a power carrier. The preset distance can be calibrated according to actual conditions, and the preset distance can be smaller than or equal to the monitoring (broadcasting) range of the PLC device at the station.
After the power supply equipment receives the arrival reminding information, the control unit of the power supply equipment can control the power supply equipment to be precharged according to the arrival reminding information, and the control unit stops precharging the power supply equipment after receiving the charging instruction. It should be noted that the arrival reminding information described in this embodiment is generated by the vehicle-mounted central control unit before the charging instruction is generated.
in summary, according to the charging method for the rail transit vehicle in the embodiment of the invention, when the vehicle arrives at the station, the charging instruction sent by the vehicle-mounted central control unit through the power carrier is received, and the vehicle-mounted energy storage device is charged according to the charging instruction. Therefore, the charging method not only can enable the rail transit vehicle to be charged conveniently and reliably, but also is convenient to operate, and enables the charging flow of the rail transit vehicle to be optimized.
Fig. 3 is a flowchart of a method of charging a rail transit vehicle according to another embodiment of the present invention.
As shown in fig. 3, the charging method for rail transit vehicles according to the embodiment of the present invention includes the following steps:
And S101, when the vehicle arrives at the station, generating a charging command.
S102, sending a charging instruction to power supply equipment through the power carrier, so that the power supply equipment charges the vehicle-mounted energy storage device according to the charging instruction.
In an embodiment of the present invention, generating the charging instruction further includes: acquiring state information of an energy storage device; and determining that the energy storage device needs to be charged according to the state information.
in an embodiment of the present invention, after the generating the charging instruction, the method further includes: controlling a charging knife on the vehicle to extend out and be electrically connected with a charging rail arranged on the rail; when charging, the charging knife is electrically connected with the energy storage device, and the charging rail is electrically connected with the power supply equipment.
in one embodiment of the invention, generating a charging instruction comprises: coding the charging instruction by adopting a coding algorithm stored in the vehicle-mounted central control unit; sending a charging instruction to a power supply device through a power carrier, comprising: and sending the coded charging instruction to the power supply equipment through a power carrier wave of a preset carrier frequency.
In an embodiment of the present invention, the charging method for rail transit vehicles further includes: when the vehicle leaves the station, the charging blade of the vehicle is controlled to be disconnected with the charging rail.
In one embodiment of the present invention, before generating the charging instruction when the vehicle arrives at the station, the method further includes: and sending arrival reminding information to the power supply equipment through the power carrier so that the power supply equipment performs pre-charging according to the arrival reminding information.
It should be noted that details not disclosed in the method for charging a rail transit vehicle according to the embodiment of the present invention refer to details disclosed in the method for charging a rail transit vehicle described in the embodiments of fig. 1 and fig. 2, and details disclosed in how to charge an energy storage device of a vehicle through a charging blade and a charging rail described in the above detailed description, and are not repeated herein.
In summary, according to the charging method for the rail transit vehicle in the embodiment of the invention, when the vehicle arrives at a station, the charging instruction is generated, and the charging instruction is sent to the power supply equipment through the power carrier, so that the power supply equipment charges the vehicle-mounted energy storage device according to the charging instruction. Therefore, the charging method not only can enable the rail transit vehicle to be charged conveniently and reliably, but also is convenient to operate, and enables the charging flow of the rail transit vehicle to be optimized.
Fig. 4 is a block schematic diagram of a station control unit according to one embodiment of the present invention.
As shown in fig. 4, a station control unit 100 according to an embodiment of the present invention includes: a receiving module 110 and a charging module 120.
the receiving module 110 is configured to receive a charging instruction sent by the vehicle-mounted central control unit through a power carrier when a vehicle arrives at a station.
The charging module 120 is configured to control the power supply device to charge the vehicle-mounted energy storage device according to the charging instruction.
It should be noted that, for details that are not disclosed in the station control unit according to the embodiment of the present invention, please refer to details disclosed in the charging method for rail transit vehicles described in the embodiments of fig. 1 and fig. 2, and details disclosed in how to charge the energy storage device of the vehicle through the charging blade and the charging rail described in the above detailed description, which are not repeated herein.
To sum up, the station control unit according to the embodiment of the present invention receives a charging instruction sent by the vehicle-mounted central control unit through the power line carrier when a vehicle arrives at the station through the receiving module, and charges the vehicle-mounted energy storage device through the charging module according to the charging instruction. Therefore, the rail transit vehicle charging device can not only enable the rail transit vehicle to be convenient and reliable to charge, but also be convenient to operate, and enables the charging process of the rail transit vehicle to be optimized.
FIG. 5 is a block schematic diagram of an on-board central control unit according to one embodiment of the present invention.
As shown in fig. 5, the vehicle-mounted central control unit 200 of the embodiment of the present invention includes: a generation module 210 and a sending module 220.
The generating module 210 is configured to generate a charging instruction when the vehicle arrives at the station.
the sending module 220 is configured to send a charging instruction to the power supply device through the power carrier, so that the power supply device charges the vehicle-mounted energy storage device according to the charging instruction.
It should be noted that, for details not disclosed in the vehicle-mounted central control unit according to the embodiment of the present invention, please refer to details disclosed in the charging method for rail transit vehicles described in the embodiments of fig. 1 and fig. 2, and details disclosed in how to charge the energy storage device of the vehicle through the charging blade and the charging rail described in the above detailed description, which are not repeated herein.
To sum up, the vehicle-mounted central control unit of the embodiment of the present invention generates a charging instruction when a vehicle arrives at a station through the generation module, and controls the transmission module to transmit the charging instruction to the power supply device through the power carrier, so that the power supply device charges the vehicle-mounted energy storage device according to the charging instruction. Therefore, the rail transit vehicle charging device can not only enable the rail transit vehicle to be convenient and reliable to charge, but also be convenient to operate, and enables the charging process of the rail transit vehicle to be optimized.
fig. 6 is a block schematic diagram of a charging system for rail transit vehicles in accordance with one embodiment of the present invention.
as shown in fig. 6, the charging system for a rail transit vehicle according to the embodiment of the present invention includes: a first device 1000 and a second device 2000, the first device 1000 being installed on a vehicle, the second device 2000 being installed at a station, and the first device 1000 and the second device 200 communicating via a power carrier.
Wherein, the first device 1000 includes the vehicle-mounted central control unit 200 and the energy storage device 10 of the above-described embodiment, and the second device 2000 includes the station control unit 100 and the power supply apparatus 20 of the above-described embodiment.
It should be noted that details not disclosed in the charging system for a rail transit vehicle according to the embodiment of the present invention refer to details disclosed in the charging method for a rail transit vehicle described in the embodiments of fig. 1 and fig. 2, and details disclosed in how to charge the energy storage device of the vehicle through the charging blade and the charging rail described in the above detailed description, and are not repeated herein.
In summary, the charging system for the rail transit vehicle according to the embodiment of the invention, by arranging the first device on the vehicle and the second device arranged at the station, not only can the charging of the rail transit vehicle be convenient and reliable, but also the operation is convenient, and the charging process of the rail transit vehicle is optimized.
fig. 7 is a flowchart of a charging method of a charging system of a rail transit vehicle according to an embodiment of the present invention.
As shown in fig. 7, the charging method of the charging system of the rail transit vehicle according to the embodiment of the present invention includes the following steps:
S10, when the vehicle arrives at the station, the vehicle-mounted central control unit generates a charging instruction and transmits the charging instruction to the power supply apparatus through the power carrier.
and S20, the station control unit receives a charging instruction sent by the vehicle-mounted central control unit through the power carrier, and controls the power supply equipment to charge the energy storage device according to the charging instruction.
It should be noted that details not disclosed in the charging method of the charging system of the rail transit vehicle according to the embodiment of the present invention refer to details disclosed in the charging method of the rail transit vehicle described in the embodiments of fig. 1 and fig. 2, and details disclosed in how to charge the energy storage device of the vehicle through the charging blade and the charging rail in the above detailed description, which are not repeated herein. In summary, according to the charging method of the charging system of the rail transit vehicle in the embodiment of the invention, when the vehicle arrives at the station, the vehicle-mounted central control unit generates the charging instruction and sends the charging instruction to the power supply equipment through the power carrier, and then the station control unit receives the charging instruction sent by the vehicle-mounted central control unit through the power carrier and controls the power supply equipment to charge the energy storage device according to the charging instruction. Therefore, the rail transit vehicle charging device can not only enable the rail transit vehicle to be convenient and reliable to charge, but also be convenient to operate, and enables the charging process of the rail transit vehicle to be optimized.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined 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; either directly or indirectly through intervening media, either internally or in any other relationship. 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.
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 are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
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 charging method of a rail transit vehicle is characterized by comprising the following steps:
When a vehicle arrives at a station, receiving a charging instruction sent by a vehicle-mounted central control unit through a power carrier;
and controlling the power supply equipment to charge the vehicle-mounted energy storage device according to the charging instruction.
2. the method of claim 1, wherein the receiving of the charging instruction sent by the on-board central control unit via the power carrier comprises:
And monitoring the charging instruction on a preset carrier frequency to acquire the charging instruction.
3. the method according to claim 1, wherein before controlling the power supply device to charge the vehicle-mounted energy storage device according to the charging instruction, the method further comprises:
acquiring a coding algorithm of the vehicle-mounted central control unit according to the identification information of the vehicle;
And decoding the charging instruction by adopting a decoding algorithm matched with the coding algorithm.
4. The method of claim 3, wherein after decoding the charging instruction, further comprising:
Acquiring state information of the energy storage device;
Judging whether the energy storage device needs to be charged or not according to the state information;
When the energy storage device needs to be charged, controlling the power supply equipment to be conducted with a path between charging rails arranged on a track so as to charge the energy storage device through the charging rails;
When charging, the charging knife on the vehicle extends out and is electrically connected with the charging rail; the charging knife is electrically connected with the energy storage device.
5. The method of claim 4, further comprising:
when the vehicle leaves the station, a charging end instruction sent by the vehicle-mounted central control unit through a power carrier wave is received, and the access is controlled to be disconnected according to the charging end instruction.
6. the method according to claim 1, wherein before receiving the charging instruction sent by the vehicle-mounted central control unit through the power carrier when the vehicle arrives at the station, the method further comprises:
Receiving arrival reminding information sent by the vehicle-mounted central control unit through the power line carrier;
Controlling to pre-charge the power supply equipment according to the arrival reminding information;
And stopping precharging the power supply equipment after receiving the charging command.
7. a charging method of a rail transit vehicle is characterized by comprising the following steps:
when the vehicle arrives at the station, generating a charging instruction;
And sending a charging instruction to power supply equipment through the power carrier so that the power supply equipment charges the vehicle-mounted energy storage device according to the charging instruction.
8. The method of claim 7, wherein generating the charging instruction is preceded by:
Acquiring state information of the energy storage device;
And determining that the energy storage device needs to be charged according to the state information.
9. The method of claim 8, wherein after generating the charging instruction, further comprising:
Controlling a charging knife on the vehicle to extend out and be electrically connected with a charging rail arranged on the track; when the charging device is charged, the charging knife is electrically connected with the energy storage device, and the charging rail is electrically connected with the power supply equipment.
10. the method of claim 7, wherein the generating the charging instruction comprises:
Coding the charging instruction by adopting a coding algorithm stored in the vehicle-mounted central control unit;
The sending of the charging instruction to the power supply device through the power carrier includes:
And sending the coded charging instruction to the power supply equipment through a power carrier wave of a preset carrier frequency.
11. The method of claim 10, further comprising:
when the vehicle leaves the station, the charging knife of the vehicle is controlled to be disconnected with the charging rail.
12. The method of claim 7, wherein before generating the charging instruction when the vehicle arrives at the station, further comprising:
And sending arrival reminding information to the power supply equipment through the power carrier so that the power supply equipment performs pre-charging according to the arrival reminding information.
13. A station control unit, comprising:
the receiving module is used for receiving a charging instruction sent by the vehicle-mounted central control unit through a power carrier when a vehicle arrives;
And the charging module is used for controlling the power supply equipment to charge the vehicle-mounted energy storage device according to the charging instruction.
14. An on-board central control unit, comprising:
The generating module is used for generating a charging instruction when the vehicle arrives at the station;
The transmitting module is used for transmitting a charging instruction to the power supply equipment through the power carrier so that the power supply equipment can charge the vehicle-mounted energy storage device according to the charging instruction.
15. A rail transit vehicle charging system, comprising: a first device arranged on a vehicle and a second device arranged at a station; the first device and the second device communicate over a power carrier;
Wherein the first apparatus comprises: the on-board central control unit and energy storage device of claim 14, said second means comprising: the station control unit and the power supply device as claimed in claim 13.
16. A charging method of a charging system of a rail transit vehicle according to claim 15, characterized by comprising the steps of:
when a vehicle arrives at a station, the vehicle-mounted central control unit generates a charging instruction and transmits the charging instruction to the power supply equipment through a power carrier;
And the station control unit receives a charging instruction sent by the vehicle-mounted central control unit through a power line carrier, and controls the power supply equipment to charge the energy storage device according to the charging instruction.
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