CN118636741A - Locomotive power change method and device, electric storage vehicle and electric locomotive - Google Patents
Locomotive power change method and device, electric storage vehicle and electric locomotive Download PDFInfo
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- CN118636741A CN118636741A CN202411117190.5A CN202411117190A CN118636741A CN 118636741 A CN118636741 A CN 118636741A CN 202411117190 A CN202411117190 A CN 202411117190A CN 118636741 A CN118636741 A CN 118636741A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
The embodiment of the application provides a locomotive power conversion method, a device, a power storage vehicle and an electric locomotive, wherein the locomotive comprises the power storage vehicle and a tractor, and the method comprises the following steps: under the condition of the electric shortage of the tractor, a separation signal of the electric storage vehicle and the electric shortage tractor is sent in a preset power exchange operation area, so that the electric storage vehicle continuously runs through a turnout based on the electric storage module, a driving-in signal of a charging special line is received, a connecting signal of the preset charging special line and the full electric tractor is sent to the electric storage vehicle, a preset switch is switched, the full electric tractor supplies power to the electric storage vehicle, after the electric storage vehicle is connected with the full electric tractor, a connecting signal of the charging special line and the electric shortage tractor is sent to the electric storage vehicle, a separation signal of the electric shortage tractor is sent to the electric storage vehicle, the electric shortage tractor is left on the charging special line for charging, the electric storage vehicle realizes quick power supply to the electric storage vehicle through power exchange, a contact net is not needed, a charging pile is also not needed, the cost is low, and the power supply efficiency is high.
Description
Technical Field
The application relates to the technical field of new energy, in particular to a locomotive power conversion method and device, a power storage car and an electric locomotive.
Background
Locomotives are classified into steam locomotives, diesel locomotives, gas turbine locomotives, and the like. The locomotives carry fuel and water, are locomotives with energy sources, can independently run, and have the problem of environmental pollution. Later, the electric locomotive is generated, but the current electric locomotive needs to erect the overhead contact system along the railway, the construction of the overhead contact system involves a large amount of construction engineering and cable consumables, and meanwhile, the overhead contact system also needs to be maintained regularly, so that the use cost is high.
Disclosure of Invention
The embodiment of the application provides a locomotive power conversion method and device, a power storage car and an electric locomotive.
In a first aspect of an embodiment of the present application, there is provided a locomotive power conversion method, the locomotive including a power storage car including a power storage module and a tractor including a plurality of battery packs, the tractor being connected to the power storage car, the method comprising:
under the condition that the tractor is under electricity, a separation signal of the electric storage vehicle and the under-electricity tractor is sent in a preset electricity changing operation area, so that the electric storage vehicle continuously runs through the turnout based on the electric storage module;
Receiving a charging special line entering signal, sending a connecting signal for entering a preset charging special line and a full-power tractor to a power storage vehicle, and switching a preset switch to enable the full-power tractor to supply power to the power storage vehicle;
After the electric storage car is connected with the full-electric traction car, a signal for connecting the special charging wire and the under-electric traction car is sent to the electric storage car, so that the full-electric traction car and the under-electric traction car are driven into the special charging wire by the electric storage car;
And sending a signal for separating the underrun tractor from the electric storage car to the electric storage car on the special charging wire, and keeping the underrun tractor on the special charging wire for charging, and waiting for the next electricity change after full charge.
In an alternative embodiment of the application, the distance between the preset charging dedicated line and the power plant and locomotive running rail is within a first preset distance range and a second preset distance range, respectively.
In an alternative embodiment of the present application, the leaving the under-powered tractor on the charging dedicated line for charging includes:
monitoring the power grid load of a power plant in real time, and charging the under-electric traction vehicle with the under-electric traction vehicle left on a charging special line as energy storage equipment under the condition that the power grid load is smaller than or equal to a preset load value;
And under the condition that the power grid load is larger than a preset load value, using the full-electric tractor in the special charging line as a standby battery to carry out peak and valley regulation on the power plant.
In an alternative embodiment of the application, the method further comprises:
acquiring a corresponding time period of the highest point and the lowest point of a power grid load curve of a power plant in historical data in one day;
and respectively taking the time periods corresponding to the highest point and the lowest point of the power grid load curve in one day as locomotive power change limiting time and optimal power change time, wherein the power change limiting time of the locomotive is that the number of the power-shortage tractors in the special charging line is not less than a preset number.
In an optional embodiment of the present application, the obtaining a time period corresponding to a highest point and a lowest point of a power grid load curve of the power plant in the historical data includes:
Predicting the power grid load curve of each day in the next year by taking the power grid load curves of the power plants of each day in a plurality of preset years as historical data;
and determining the corresponding time period of the highest point and the lowest point of the power grid load prediction curve in one day according to the power grid load prediction curve in one day.
In an optional embodiment of the present application, the determining, according to the power grid load prediction curve of each day, a time period corresponding to a highest point and a lowest point of the power grid load prediction curve of each day includes:
in a power grid load prediction curve of each day, respectively determining a first front balance point and a first rear balance point with the minimum absolute value of the moment difference between the first front balance point and the highest point before and after the highest point, and respectively determining a second front balance point and a second rear balance point with the minimum absolute value of the moment difference between the first front balance point and the lowest point before and after the lowest point, wherein the balance points are points of the power grid load which is generated by a power plant;
Taking the time period between the first front balance point and the first rear balance point as the corresponding time period of the highest point in the day;
the time period between the second front balance point and the second rear balance point is taken as the corresponding time period of the lowest point in the day.
In an alternative embodiment of the application, the method further comprises:
And determining a locomotive power change schedule according to the locomotive power change limit time and the optimal power change time so as to carry out peak and valley regulation on the power plant through a locomotive power change tractor.
In a second aspect of the embodiment of the present application, there is provided a locomotive power conversion device, including:
the first sending module is used for sending a separation signal of the electric storage vehicle and the underpowered tractor in a preset power exchange operation area under the condition that the tractor is underpowered, so that the electric storage vehicle continuously runs through the turnout based on the electric storage module;
The switching module is used for receiving a charging special line entering signal, sending a connecting signal of a preset charging special line and the full-power tractor to the electric storage car, and switching a preset switch to enable the full-power tractor to supply power to the electric storage car;
the second sending module is used for sending a connecting signal of the outgoing charging special line and the under-electric traction vehicle to the electric storage vehicle after the electric storage vehicle is connected with the full-electric traction vehicle, so that the electric storage vehicle pulls the full-electric traction vehicle and the under-electric traction vehicle into the charging special line;
And the third sending module is used for sending a signal for separating the underelectric traction vehicle from the electric storage vehicle to the electric storage vehicle when the special charging line is charged, and keeping the underelectric traction vehicle on the special charging line for charging, and waiting for the next power change after the electric storage vehicle is fully charged.
In a third aspect of the embodiment of the present application, there is provided a trolley bus comprising: the electric storage car comprises an electric storage module and the locomotive electric exchange device.
In a fourth aspect of the embodiment of the present application, there is provided an electric locomotive including the electric storage vehicle and a tractor, wherein the tractor includes a plurality of battery packs, and the tractor is connected to the electric storage vehicle.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is a flow chart of a locomotive power conversion method according to an embodiment of the present application;
FIG. 2 is a schematic illustration of a locomotive according to one embodiment of the present application;
FIG. 3 is a schematic diagram of a separation of an electric storage vehicle and an electric-powered tractor according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a train with a full electric traction vehicle according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a full electric traction vehicle and an under electric traction vehicle for a trolley according to one embodiment of the present application;
FIG. 6 is a schematic diagram of a charge station for a trolley and a full electric tractor according to an embodiment of the present application;
FIG. 7 is a schematic diagram of a locomotive power conversion device according to an embodiment of the present application;
FIG. 8 is a schematic bottom view of a partial structure of an energy storage system in an electric locomotive according to one embodiment of the present application;
fig. 9 is a schematic structural diagram of a lifting matching mechanism disposed on a bottom frame of an energy storage system in an electric locomotive according to an embodiment of the present application.
Detailed Description
In the process of realizing the application, the inventor discovers that the current electric locomotive needs to erect the overhead contact system along the railway, the construction of the overhead contact system involves a large amount of construction engineering and cable consumables, and meanwhile, the overhead contact system also needs to be maintained regularly, so that the use cost is high.
In view of the above problems, an embodiment of the present application provides a locomotive power-changing method, where the locomotive includes a power storage trolley and a tractor, the power storage trolley includes a power storage module, the tractor includes a plurality of battery packs, the tractor is connected to the power storage trolley, in the case of under-powering of the tractor, a signal for separating the power storage trolley from the under-powered tractor is sent in a preset power-changing operation area, so that the power storage trolley continues to travel over a switch based on the power storage module, a signal for entering a charging dedicated line is received, a signal for connecting the power storage trolley with a full-powered tractor is sent to the power storage trolley, a preset switch is switched, so that the full-powered tractor supplies power to the power storage trolley, after the power storage trolley is connected with the full-powered tractor, a signal for connecting the power storage trolley with the under-powered tractor is sent to the full-powered tractor, the power storage trolley is driven into the charging dedicated line, in the charging dedicated line is sent to the power storage trolley, the electric tractor is left in the charging dedicated line, after the power storage trolley continues to travel over the switch, the charging dedicated line is received, the power-powered trolley waits for the next time after the power storage trolley is fully charged, and under-powered down is not required, and the power-changing pile is not required to be replaced, so that the power-supplying efficiency is high.
In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following detailed description of exemplary embodiments of the present application is provided in conjunction with the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present application and not exhaustive of all embodiments. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.
Referring to fig. 1, the locomotive power conversion method provided by the embodiment of the application includes the following steps S1-S4, wherein, referring to fig. 2, the locomotive 120 includes a power storage car 1201 including a power storage module and a tractor 1202 including a plurality of battery packs, and the tractor is connected to the power storage car:
S1, under the condition that the tractor is underpowered, a separation signal of the electric storage vehicle and the underpowered tractor is sent in a preset power exchange operation area, so that the electric storage vehicle can continue to run through the turnout based on the electric storage module.
In an alternative embodiment of the application, referring to fig. 3, after the preset power change operation area sends a power storage car and power shortage tractor separation signal, the power shortage tractor is left in place as a battery car 1, and the power storage car continues to travel through the turnout as a locomotive.
S2, receiving a charging special line entering signal, sending a connecting signal for entering a preset charging special line and the full-power tractor to the electric storage car, and switching a preset switch to enable the full-power tractor to supply power for the electric storage car.
In an alternative embodiment of the application, see fig. 4, the electric storage vehicle is coupled as a pre-set charging dedicated line for the locomotive entering the charging station, with the full electric tractor as the battery car 2.
In an alternative embodiment of the present application, in the step S2, the distances between the preset charging dedicated line and the power plant and the locomotive running track are within the first preset distance range and the second preset distance range, respectively.
And S3, after the electric storage car is connected with the full-electric traction car, sending a connection signal of the special charging wire and the under-electric traction car to the electric storage car, so that the electric storage car pulls the full-electric traction car and the under-electric traction car into the special charging wire.
In an alternative embodiment of the application, see fig. 5, the electric storage vehicle is coupled as a locomotive with the battery car 2 and as an underrun tractor for the battery car 1 and then together driven into a preset charging dedicated line of the charging station.
And S4, sending a signal for separating the underelectric tractor from the electric storage car to the electric storage car on the special charging line, and keeping the underelectric tractor on the special charging line for charging, and waiting for the next power change after full charge.
In an alternative embodiment of the present application, referring to FIG. 2, electric storage vehicle 1201 may also be charged at charging station 110 by a pantograph, and locomotive 120 may also include a truck 1203.
In an alternative embodiment of the application, see fig. 6, the under-powered tractor as battery car 1 is left on the charging dedicated line for charging, and the electric storage car is driven out of the charging station as a locomotive together with battery car 2.
In an optional embodiment of the present application, in the step S4, the step of leaving the under-powered tractor on the charging dedicated line for charging includes:
monitoring the power grid load of a power plant in real time, and charging the under-electric traction vehicle with the under-electric traction vehicle left on a charging special line as energy storage equipment under the condition that the power grid load is smaller than or equal to a preset load value;
And under the condition that the power grid load is larger than a preset load value, using the full-electric tractor in the special charging line as a standby battery to carry out peak and valley regulation on the power plant.
In an alternative embodiment of the application, the method further comprises:
acquiring a corresponding time period of the highest point and the lowest point of a power grid load curve of a power plant in historical data in one day;
and respectively taking the time periods corresponding to the highest point and the lowest point of the power grid load curve in one day as locomotive power change limiting time and optimal power change time, wherein the power change limiting time of the locomotive is that the number of the power-shortage tractors in the special charging line is not less than a preset number.
In an optional embodiment of the present application, the obtaining a time period corresponding to a highest point and a lowest point of a power grid load curve of the power plant in the historical data includes:
Predicting the power grid load curve of each day in the next year by taking the power grid load curves of the power plants of each day in a plurality of preset years as historical data;
and determining the corresponding time period of the highest point and the lowest point of the power grid load prediction curve in one day according to the power grid load prediction curve in one day.
In an optional embodiment of the present application, the determining, according to the power grid load prediction curve of each day, a time period corresponding to a highest point and a lowest point of the power grid load prediction curve of each day includes:
in a power grid load prediction curve of each day, respectively determining a first front balance point and a first rear balance point with the minimum absolute value of the moment difference between the first front balance point and the highest point before and after the highest point, and respectively determining a second front balance point and a second rear balance point with the minimum absolute value of the moment difference between the first front balance point and the lowest point before and after the lowest point, wherein the balance points are points of the power grid load which is generated by a power plant;
Taking the time period between the first front balance point and the first rear balance point as the corresponding time period of the highest point in the day;
the time period between the second front balance point and the second rear balance point is taken as the corresponding time period of the lowest point in the day.
In an alternative embodiment of the application, the method further comprises:
And determining a locomotive power change schedule according to the locomotive power change limit time and the optimal power change time so as to carry out peak and valley regulation on the power plant through a locomotive power change tractor.
One embodiment of the present application provides a locomotive control method, including the steps of:
Acquiring power-on and power-off control environment data and high-voltage system state data through a sensor network, comprehensively analyzing to obtain a battery abnormal interference degree index of the electric locomotive, and processing to obtain a battery cluster abnormal degree evaluation threshold according to the battery abnormal interference degree index of the electric locomotive;
monitoring abnormal state data of each battery unit of the electric locomotive, and comprehensively analyzing to obtain an evaluation value of the abnormal degree of the battery cluster of the electric locomotive;
And comparing the battery cluster abnormality degree evaluation value of the electric locomotive with a battery cluster abnormality degree evaluation threshold, and if the battery cluster abnormality degree evaluation value of the electric locomotive is larger than the battery cluster abnormality degree evaluation threshold, powering down the electric locomotive.
In an optional embodiment of the present application, the comprehensive analysis obtains a battery abnormal interference index of the electric locomotive, and the specific analysis process is as follows:
Disposing a plurality of environment monitoring points, collecting the environment temperature, the environment humidity and the environment air pressure of each environment monitoring point, acquiring the environment temperature, the environment humidity and the environment air pressure which are suitable for reference from a motor vehicle change database, and processing to obtain an abnormal evaluation value of the power-on and power-off control environment;
Deploying a plurality of time monitoring points, collecting actual voltage and actual current of a high-voltage system at each time monitoring point, acquiring reference standard current of the high-voltage system from a motor vehicle change database, and processing to obtain a state abnormality evaluation value of the high-voltage system;
And comprehensively analyzing to obtain the battery abnormality interference index of the electric locomotive according to the power-on and power-off control environment abnormality evaluation value and the high-voltage system state abnormality evaluation value.
In an optional embodiment of the present application, the processing obtains a threshold value for evaluating abnormality degree of the battery cluster, which specifically includes:
Comparing the abnormal battery interference degree index of the electric locomotive with the abnormal battery cluster degree evaluation threshold compensation parameters corresponding to each abnormal battery interference degree index interval stored in the electric locomotive database to obtain the abnormal battery cluster degree evaluation threshold compensation parameters of the electric locomotive;
Acquiring a set reference battery cluster abnormality degree evaluation threshold value from a battery cluster electric locomotive database, and carrying out summation operation on a battery cluster abnormality degree evaluation threshold value compensation parameter of the battery cluster electric locomotive and the reference battery cluster abnormality degree evaluation threshold value to obtain the battery cluster abnormality degree evaluation threshold value.
In an optional embodiment of the present application, the comprehensive analysis obtains an evaluation value of the abnormality degree of the battery cluster of the electric locomotive, and the specific analysis process is as follows:
monitoring the voltage of each battery unit in a battery cluster of the electric locomotive, processing to obtain a time-dependent voltage change curve of each battery unit, and marking the time-dependent voltage change curve as a time-series voltage curve of each battery unit;
Acquiring the lengths of the voltage time series curves of all the battery units, mutually overlapping and comparing the voltage time series curves of all the battery units, extracting the overlapping lengths between the voltage time series curves of all the battery units, and constructing an overlapping length matrix D of the voltage time change curve, wherein the mathematical expression of the matrix D is as follows:
In the method, in the process of the invention, Representing the length of overlap between the r-th and t-th cell voltage time series curves, r representing the row number in the matrix, t representing the column number in the matrix, r=1, 2,3,..s, t=1, 2,3,..s, s representing the total number of cells;
and acquiring the temperature of each battery unit, and comprehensively analyzing to obtain an evaluation value of the abnormality degree of the battery cluster of the electric locomotive.
In an optional embodiment of the present application, the battery abnormality interference index of the electric locomotive is a quantization index obtained by analyzing an abnormal evaluation value of an up-down electric control environment and an abnormal evaluation value of a high-voltage system state, and is used for quantizing the interference degree of the up-down electric control environment data and the high-voltage system state data on abnormal evaluation of a battery cluster.
In an optional embodiment of the present application, the battery abnormal interference index of the electric locomotive is expressed by the following specific numerical expression:
In the method, in the process of the invention, An abnormal interference degree index of a battery of the electric locomotive is represented, e represents a natural constant,The power-on/power-off control environment abnormality evaluation value is represented,Shows an evaluation value of the abnormality of the high-voltage system,The battery abnormal interference degree influence factor corresponding to the set power-on and power-off control environment abnormal evaluation value is represented,And the battery abnormal interference degree influence factor corresponding to the set high-voltage system state abnormal evaluation value is represented.
In an optional embodiment of the present application, the specific numerical expression of the high-voltage system state anomaly evaluation value is:
In the method, in the process of the invention, Shows an evaluation value of the abnormality of the high-voltage system,Representing the actual voltage at the ith time monitoring point,Representing the actual current at the ith time monitoring point,Indicating that the high voltage system is referenced to a standard current,Indicating that the high voltage system is allowing a bias current,Indicating the abnormal influence factor of the state of the high-voltage system corresponding to the set voltage,The high-voltage system state abnormality influencing factor corresponding to the set current is represented, i represents the number of each time monitoring point, i=1, 2, 3.
In an optional embodiment of the present application, the power-off control of the electric locomotive includes power-off control of the locomotive under the condition that only auxiliary equipment is powered on, and the specific process is as follows:
The battery management system sends a power-down request instruction of the vehicle head, the vehicle head auxiliary equipment sends a power-down signal or a wake-up signal is lost three times continuously, and the secondary main control system receives the signals and immediately sends a water-cooling shutdown instruction;
The battery management system detects the total current of the loop, performs high-voltage reduction according to the current, and sequentially disconnects the total positive relay and the total negative relay in the battery clusters, so that all the battery clusters synchronously complete the high-voltage reduction.
In an optional embodiment of the present application, the power-off control of the electric locomotive includes the power-off control of the locomotive system in the high-voltage state, and the specific process is as follows:
the battery management system sends a headstock power-down request instruction, prepares to send headstock high-voltage power-down signals, and detects the total current of a loop if the headstock power-down and auxiliary power-down commands are continuously received for more than three times or three-level wake-up signals disappear, and carries out high-voltage power-down according to the current;
The three-stage main control gradually disconnects the load end and the direct current side breaker, the two-stage battery management system enables high-voltage power down, and sequentially disconnects the total positive relay and the total negative relay in the battery clusters, so that all the battery clusters synchronously finish the high-voltage power down.
In an alternative embodiment of the present application, the locomotive control method further includes powering up the electric locomotive, and the specific process is as follows:
the locomotive system enters a self-checking state, the battery management system cooperatively enters a wake-up mode after receiving a wake-up instruction, safety check and system communication establishment are carried out, and when the locomotive controller instructs auxiliary facilities to power up, the battery management system checks the health condition and the pressure difference of a battery cluster and gradually increases the voltage;
the three-stage main control operates the main circuit breaker, and after the main circuit breaker is successfully closed, the whole vehicle high-voltage system is electrified, and the safety and the order of the locomotive electrification operation are ensured through ending the message confirmation flow.
It should be understood that, although the steps in the flowchart are shown in sequence as indicated by the arrows, the steps are not necessarily performed in sequence as indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the figures may include multiple sub-steps or stages that are not necessarily performed at the same time, but may be performed at different times, nor does the order in which the sub-steps or stages are performed necessarily performed in sequence, but may be performed alternately or alternately with at least a portion of other steps or other steps.
Referring to fig. 7, an embodiment of the present application provides a locomotive power conversion device, including:
The first sending module 11 is configured to send a separation signal between the electric storage vehicle and the under-powered tractor in a preset power-change operation area under the condition that the tractor is under-powered, so that the electric storage vehicle continues to travel through the turnout based on the electric storage module;
The switching module 12 is configured to receive a charging dedicated line entering signal, send a signal to the electric storage vehicle to enter a preset charging dedicated line and connect with the full-power tractor, and switch the preset switch so that the full-power tractor supplies power to the electric storage vehicle;
A second transmitting module 13, configured to transmit a signal for coupling the electric storage vehicle with the full-power tractor to the electric storage vehicle after coupling the electric storage vehicle with the full-power tractor, so that the electric storage vehicle pulls the full-power tractor and the full-power tractor into the electric storage vehicle;
And the third sending module 14 is used for sending a signal for separating the underelectric tractor from the electric storage car to the electric storage car when the special charging wire is charged, and waiting for the next power change after the electric storage car is fully charged.
The specific limitation of the locomotive power exchanging device can be referred to the limitation of the locomotive power exchanging method, and the description is omitted herein. The modules in the locomotive power conversion device can be realized in whole or in part by software, hardware and a combination thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
One embodiment of the present application provides a storage trolley comprising: the electric storage car comprises an electric storage module and the locomotive electric exchange device.
An embodiment of the present application provides an electric locomotive, including the electric locomotive and a tractor, wherein the tractor includes a plurality of battery packs, and the tractor is connected to the electric locomotive.
Referring to fig. 8 and 9, an embodiment of the present application provides a tractor for facilitating lifting, comprising: a container 211 and a lifting engagement mechanism 219. The container 211 has a cavity in which a battery pack, a high-voltage tank, a DC-DC converter, and a bus bar are disposed, the battery pack being electrically connected to the high-voltage tank, the high-voltage tank being electrically connected to the DC-DC converter, and the bus bar being electrically connected to the DC-DC converter. The lifting matching mechanism 219 comprises a fixing portion 2191 and a movable portion 2192, the fixing portion 2191 is fixedly arranged on the container 211, the movable portion 2192 is movably connected to the fixing portion 2191, the lifting matching mechanism 219 has a storage state and a use state, the movable portion 2192 extends out of the fixing portion 2191 in the use state, the movable portion 2192 is used for connecting lifting equipment, and the movable portion 2192 is retracted into the fixing portion 2191 in the storage state, so that interference between the movable portion 2192 and an external structure is avoided.
The tractor convenient to hoist is provided with the hoisting matching mechanism 219, can be connected and matched with hoisting equipment, is convenient for the whole disassembly and assembly of the container 211, and improves the assembly efficiency. The lifting device may have a collar, which is sleeved on the extended movable portion 2192.
In some possible embodiments, the container 211 includes a top frame and a bottom frame 2111, a cavity is formed between the top frame and the bottom frame 2111, and a securing portion 2191 of the lifting engagement mechanism 219 is provided to the bottom frame 2111.
The lifting fit mechanism 219 is arranged on the bottom frame 2111, and the lifting device is directly connected to the lifting fit mechanism 219 on the bottom frame 2111, so that the stability and safety of lifting operation are improved.
In some possible embodiments, the moving direction of the movable portion 2192 is parallel to the width direction of the bottom frame 2111, and in the use state, the movable portion 2192 protrudes out of the bottom frame 2111 in the width direction of the bottom frame 2111, and in the storage state, the movable portion 2192 is retracted to one side of the bottom frame 2111. The movable portion 2192 extends along the width direction of the bottom frame 2111, and can be conveniently connected with a corresponding structure on the lifting device. The bottom frame 2111 may be provided with a plurality of lifting engaging mechanisms 219, and each lifting engaging mechanism 219 is disposed on two sides of the bottom frame 2111 in the width direction, and each lifting engaging mechanism 219 on the same side of the bottom frame 2111 is disposed in sequence along the length direction of the bottom frame 2111. Through setting up a plurality of hoist and mount mating mechanism 219, the joinder position of multiplicable bottom frame 2111 and lifting device has promoted lifting device and bottom frame 2111 connection structure stability, and the setting of a plurality of hoist and mount mating mechanism 219 does benefit to container 211 even atress, and container 211 gesture remains stable, is difficult for crookedly.
In some possible embodiments, the bottom frame 2111 includes a plurality of structural beams 21111, each structural beam 21111 being disposed in sequence along the length of the bottom frame 2111, each structural beam 21111 extending along the width of the frame, and the securing portion 2191 being located between each structural beam 21111 and being fixedly connected to the structural beam 21111.
Each of the lifting engagement mechanisms 219 is disposed in a space formed between two adjacent structural beams 21111, respectively, without occupying additional space of the bottom frame 2111. The embodiment of the application fully utilizes the bottom frame 2111, and adaptively designs the assembly structure of the lifting matching mechanism 219 according to the structural characteristics of the bottom frame 2111. The structural beam 21111 has high structural strength, the fixing portion 2191 is directly connected to the structural beam 21111, the structural strength is high, and the service life of the hoisting fitting mechanism 219 is long.
In some possible embodiments, the bottom frame 2111 includes a number of connectors 21112, the connectors 21112 being located between two adjacent structural beams 21111, and the connectors 21112 being welded to the two structural beams 21111 and the securing portion 2191 located between the two structural beams 21111, respectively. The connecting piece 21112 may be a metal structure, and may be a metal plate or a metal block, and the connecting piece 21112 is welded to the structural beam 21111 at two sides and the fixing portion 2191 in the middle, respectively, so as to connect the three into an integral structure.
When the fixing portion 2191 is cylindrical, the connecting member 21112 may be provided with a circular avoidance hole, the avoidance hole may be sleeved on the fixing portion 2191, and an inner end surface of the avoidance hole is attached to and welded to the surface of the fixing portion 2191.
In some possible embodiments, the bottom frame 2111 may include two side main beams 21113, the two side main beams 21113 are spaced apart, each of the structural beams 21111 is located between the two side main beams 21113, and two ends of the structural beam 21111 are connected to the two side main beams 21113, respectively, the side main beams 21113 have a through hole extending in a width direction of the bottom frame 2111, and the fixing portion 2191 is disposed through the through hole. The fixing portion 2191 may be a cylindrical body, and the fixing portion 2191 has a sliding groove extending in a direction perpendicular to the side main beam 21113, the sliding groove defining a moving direction of the moving portion 2192.
In some possible embodiments, the fixed portion 2191 has a through chute, the movable portion 2192 is disposed through the chute, two ends of the movable portion 2192 are respectively provided with a flange portion 21921, and an outer diameter of the flange portion 21921 is larger than an inner diameter of the chute. Flange portions 21921 are provided at both ends of the movable portion 2192, so that the sliding range of the movable portion 2192 is limited, and the movable portion 2192 is prevented from sliding out of the fixed portion 2191 as a whole.
In some possible embodiments, the movable portion 2192 is provided with a connection hole on the flange portion 21921 located outside the bottom frame 2111, and the stopper can be connected to the fixed portion 2191 or the bottom frame 2111 of the container 211 through the connection hole at one end, and is limited to the flange portion 21921 at the other end. The limiting part can comprise a cap body and a screw rod, the screw rod passes through the connecting hole and is in threaded connection with the fixed part 2191 or a threaded groove arranged on the container 211, and the cap body is limited on the flange part 21921, so that the position of the movable part 2192 is fixed, and the movable part 2192 is prevented from accidentally sliding out and colliding with an external structure.
While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (10)
1. A locomotive power conversion method, wherein the locomotive comprises a power storage car and a tractor, the power storage car comprises a power storage module, the tractor comprises a plurality of battery packs, the tractor is connected to the power storage car, the method comprises:
under the condition that the tractor is under electricity, a separation signal of the electric storage vehicle and the under-electricity tractor is sent in a preset electricity changing operation area, so that the electric storage vehicle continuously runs through the turnout based on the electric storage module;
Receiving a charging special line entering signal, sending a connecting signal for entering a preset charging special line and a full-power tractor to a power storage vehicle, and switching a preset switch to enable the full-power tractor to supply power to the power storage vehicle;
After the electric storage car is connected with the full-electric traction car, a signal for connecting the special charging wire and the under-electric traction car is sent to the electric storage car, so that the full-electric traction car and the under-electric traction car are driven into the special charging wire by the electric storage car;
And sending a signal for separating the underrun tractor from the electric storage car to the electric storage car on the special charging wire, and keeping the underrun tractor on the special charging wire for charging, and waiting for the next electricity change after full charge.
2. The method of claim 1, wherein the distance between the pre-set charging dedicated line and the power plant and locomotive operating track is within a first pre-set distance range and a second pre-set distance range, respectively.
3. The method of claim 2, wherein the leaving the under-powered tractor on the charging dedicated line for charging comprises:
monitoring the power grid load of a power plant in real time, and charging the under-electric traction vehicle with the under-electric traction vehicle left on a charging special line as energy storage equipment under the condition that the power grid load is smaller than or equal to a preset load value;
And under the condition that the power grid load is larger than a preset load value, using the full-electric tractor in the special charging line as a standby battery to carry out peak and valley regulation on the power plant.
4. A method according to claim 3, characterized in that the method further comprises:
acquiring a corresponding time period of the highest point and the lowest point of a power grid load curve of a power plant in historical data in one day;
and respectively taking the time periods corresponding to the highest point and the lowest point of the power grid load curve in one day as locomotive power change limiting time and optimal power change time, wherein the power change limiting time of the locomotive is that the number of the power-shortage tractors in the special charging line is not less than a preset number.
5. The method of claim 4, wherein the obtaining the time period corresponding to the highest point and the lowest point of the power plant load curve in the power plant in the history data comprises:
Predicting the power grid load curve of each day in the next year by taking the power grid load curves of the power plants of each day in a plurality of preset years as historical data;
and determining the corresponding time period of the highest point and the lowest point of the power grid load prediction curve in one day according to the power grid load prediction curve in one day.
6. The method of claim 5, wherein determining a time period corresponding to a highest point and a lowest point of the power grid load prediction curve in each day according to the power grid load prediction curve in each day comprises:
in a power grid load prediction curve of each day, respectively determining a first front balance point and a first rear balance point with the minimum absolute value of the moment difference between the first front balance point and the highest point before and after the highest point, and respectively determining a second front balance point and a second rear balance point with the minimum absolute value of the moment difference between the first front balance point and the lowest point before and after the lowest point, wherein the balance points are points of the power grid load which is generated by a power plant;
Taking the time period between the first front balance point and the first rear balance point as the corresponding time period of the highest point in the day;
the time period between the second front balance point and the second rear balance point is taken as the corresponding time period of the lowest point in the day.
7. The method according to claim 4, wherein the method further comprises:
And determining a locomotive power change schedule according to the locomotive power change limit time and the optimal power change time so as to carry out peak and valley regulation on the power plant through a locomotive power change tractor.
8. A locomotive power conversion device, comprising:
the first sending module is used for sending a separation signal of the electric storage vehicle and the underpowered tractor in a preset power exchange operation area under the condition that the tractor is underpowered, so that the electric storage vehicle continuously runs through the turnout based on the electric storage module;
The switching module is used for receiving a charging special line entering signal, sending a connecting signal of a preset charging special line and the full-power tractor to the electric storage car, and switching a preset switch to enable the full-power tractor to supply power to the electric storage car;
the second sending module is used for sending a connecting signal of the outgoing charging special line and the under-electric traction vehicle to the electric storage vehicle after the electric storage vehicle is connected with the full-electric traction vehicle, so that the electric storage vehicle pulls the full-electric traction vehicle and the under-electric traction vehicle into the charging special line;
And the third sending module is used for sending a signal for separating the underelectric traction vehicle from the electric storage vehicle to the electric storage vehicle when the special charging line is charged, and keeping the underelectric traction vehicle on the special charging line for charging, and waiting for the next power change after the electric storage vehicle is fully charged.
9. A trolley bus, comprising: the electric storage vehicle comprising an electric storage module and a locomotive power conversion device according to claim 8.
10. An electric locomotive comprising the electric storage vehicle of claim 9 and a tractor comprising a plurality of battery packs, the tractor being connected to the electric storage vehicle.
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| CN202411117190.5A CN118636741A (en) | 2024-08-15 | 2024-08-15 | Locomotive power change method and device, electric storage vehicle and electric locomotive |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202411117190.5A CN118636741A (en) | 2024-08-15 | 2024-08-15 | Locomotive power change method and device, electric storage vehicle and electric locomotive |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140031997A1 (en) * | 2012-07-24 | 2014-01-30 | International Business Machines Corporation | Predictive phase balancing for demand response |
| CN105162151A (en) * | 2015-10-22 | 2015-12-16 | 国家电网公司 | Intelligent energy storage system grid-connected real-time control method based on artificial fish swarm algorithm |
| US20190372350A1 (en) * | 2017-01-27 | 2019-12-05 | Kyocera Corporation | Power supply control method, power management server, control apparatus, and power supply control system |
| CN114566988A (en) * | 2022-01-07 | 2022-05-31 | 湘潭大学 | Energy storage access traction power supply system dual-application energy control strategy |
| EP4242048A1 (en) * | 2022-03-10 | 2023-09-13 | Libreo GmbH | Grid-saving charge management for a charging station |
| CN117565740A (en) * | 2023-12-25 | 2024-02-20 | 中车大连电力牵引研发中心有限公司 | Implementation method and system of electricity-exchanging type new energy freight traction locomotive |
-
2024
- 2024-08-15 CN CN202411117190.5A patent/CN118636741A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140031997A1 (en) * | 2012-07-24 | 2014-01-30 | International Business Machines Corporation | Predictive phase balancing for demand response |
| CN105162151A (en) * | 2015-10-22 | 2015-12-16 | 国家电网公司 | Intelligent energy storage system grid-connected real-time control method based on artificial fish swarm algorithm |
| US20190372350A1 (en) * | 2017-01-27 | 2019-12-05 | Kyocera Corporation | Power supply control method, power management server, control apparatus, and power supply control system |
| CN114566988A (en) * | 2022-01-07 | 2022-05-31 | 湘潭大学 | Energy storage access traction power supply system dual-application energy control strategy |
| EP4242048A1 (en) * | 2022-03-10 | 2023-09-13 | Libreo GmbH | Grid-saving charge management for a charging station |
| CN117565740A (en) * | 2023-12-25 | 2024-02-20 | 中车大连电力牵引研发中心有限公司 | Implementation method and system of electricity-exchanging type new energy freight traction locomotive |
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