CN111017724A - Power supply device for track crane and control method thereof - Google Patents
Power supply device for track crane and control method thereof Download PDFInfo
- Publication number
- CN111017724A CN111017724A CN201911135010.5A CN201911135010A CN111017724A CN 111017724 A CN111017724 A CN 111017724A CN 201911135010 A CN201911135010 A CN 201911135010A CN 111017724 A CN111017724 A CN 111017724A
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- CN
- China
- Prior art keywords
- battery pack
- power supply
- track
- crane
- track crane
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/12—Arrangements of means for transmitting pneumatic, hydraulic, or electric power to movable parts of devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/10—Parallel operation of dc sources
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
Abstract
The invention discloses a power supply device for a track crane and a control method thereof.A power supply mode with a hydrogen fuel battery pack as a main battery pack and an energy storage battery pack as an auxiliary battery pack is adopted to provide power for the operation of the track crane, and the energy storage battery pack is subjected to concomitant charging through a sliding contact device and a current collector during the loading and unloading operation process or waiting state of the track crane; during the process of providing power for the track crane, the electric quantity of the battery pack is always kept within an allowable range by analyzing the electric energy consumed by completing the operation instruction of the track crane and adopting the modes of common power supply of the hydrogen fuel battery pack and the energy storage battery pack, power supply of the hydrogen fuel battery pack or power supply of the energy storage battery pack for the operation instructions of different loads, so that the condition of power shortage cannot occur; compared with the conventional power supply mode of the track crane, the structural design of the track crane is optimized, the weight of the whole equipment is reduced, the complexity and the maintenance amount of the mechanism are reduced, and zero emission of the track crane is realized.
Description
Technical Field
The invention belongs to the technical field of automatic container terminal design, and particularly relates to a rail crane power supply device and a control method thereof.
Background
Automated container terminal yards are typically of a vertical type layout, i.e., the containers are stacked perpendicular to the terminal quay wall in the stacking direction of the yard. The yard adopts totally enclosed management, and the rail crane is used as the key equipment of the yard loading and unloading operation, and is responsible for the interactive operation with the horizontal transportation equipment at the two ends of the sea and land sides of the yard, and is responsible for the turning and tamping operation of the containers in the yard.
The traditional power supply mode of a high-voltage cable reel is mostly adopted by the current automatic track crane.
The reel power supply mode is an alternating current independent power supply system, each track crane is powered by an alternating current power supply and is provided with an independent voltage transformation system, a rectification system and an inversion system, each track crane needs to be provided with a special installation base of a transformer, a high-voltage cabinet, a rectification inversion system and the like, the mechanical structure is complex, the cable reel needs to keep high-speed synchronous operation with the track crane, the requirement on the performance of a control system for the operation of the reel is high, the rotational inertia is large when the reel mechanism is started and accelerated and decelerated, the impact on a high-voltage cable, the reel mechanism and a reduction gearbox is large, the abrasion is severe, and the service life is short; the reel mechanism speed reducer, the slip ring box and the like need to be regularly maintained and the accessories need to be replaced, the whole set of reel mechanism is large in maintenance amount, the service life of a common cable reel (including a high-voltage cable) is about 5 years, and the later operation and maintenance cost of the high-voltage cable reel is huge.
Disclosure of Invention
The application provides a power supply device for a track crane and a control method thereof, which provide power for the operation of the track crane through the discharge of a hydrogen fuel battery pack and an energy storage battery pack, and realize the adjoint charging of the energy storage battery pack in the loading and unloading operation based on a sliding contact device and a current collector.
The method is realized by adopting the following technical scheme:
the utility model provides a track hangs power supply unit, is applied to the track on the track and hangs, includes: the hydrogen fuel cell stack is arranged on the rail crane; the hydrogen in the hydrogen storage tank enters the fuel cell stack to react with oxygen to generate electric energy for the rail crane to use; the energy storage battery pack is arranged on the track crane; a ground power supply device; the sliding contact device is connected with the output of the ground power supply device; the current collector is arranged on the track crane and is connected with the energy storage battery pack; the current collector is in contact with the sliding contact device through a brush, so that the output of the ground power supply device charges the stored energy battery pack through the sliding contact device, the brush and the current collector.
Further, the power supply device for the track crane further comprises: the power utilization distribution module is used for analyzing the electric energy consumed by the track crane to complete the operation instruction, and distributing the hydrogen fuel battery pack and the energy storage battery pack to supply power together for the operation instruction with the consumed electric energy larger than the limited load; distributing the hydrogen fuel cell stack to supply power for the operation instruction with the consumed electric energy less than or equal to the limit load and greater than the minimum limit load; and distributing the energy storage battery pack to supply power for the work instruction with the consumed electric energy less than or equal to the minimum limit load.
Further, the power utilization distribution module is further configured to distribute the power supplied by the hydrogen fuel cell stack for an operation command that is less than or equal to a limit load and greater than a minimum limit load, and use the surplus power generated by the hydrogen fuel cell stack for charging the energy storage cell stack.
Further, the power supply device for the track crane further comprises: and the energy feedback module is used for storing feedback electric quantity into the energy storage battery pack when the track crane decelerates and the lifting mechanism descends.
Further, the power supply device for the track crane further comprises: the adjoint charging control module is used for controlling the output of the ground power supply device to charge the energy storage battery pack through the sliding contact device, the electric brush and the current collector when the rail crane is hung at the end part of the rail to carry out loading and unloading operation; or, when the track crane is in a standby state, the track crane is controlled to run to the end part of the track, and the output of the ground power supply device is controlled to charge the energy storage battery pack through the sliding contact device, the electric brush and the current collector.
Further, the trolley device includes: the sliding contact device comprises a sliding contact support and a sliding contact guide rail arranged on the sliding contact support; the output of the ground power supply device is connected with the sliding contact guide rail, and the collector is in contact with the sliding contact guide rail through an electric brush.
Further, the sliding contact support is an inverted L-shaped support; the upper end of the inverted L-shaped sliding contact support is provided with the sliding contact guide rail.
A control method of a power supply device of a track crane is provided, which is applied to the power supply device of the track crane and comprises the following steps: analyzing the electric energy consumed by the track crane to complete the operation instruction; when the consumed electric energy is larger than a limited load, controlling the hydrogen fuel battery pack and the energy storage battery pack to jointly supply power to the track crane; when the consumed electric energy is less than or equal to a limit load and greater than a minimum limit load, controlling the hydrogen fuel cell stack to supply power to the rail crane; and when the consumed electric energy is less than or equal to the lowest limit load, controlling the energy storage battery pack to supply power to the track crane.
Further, the method further comprises: when the track crane is in a standby state, controlling the track crane to run to the end part of a track, and controlling the output of the ground power supply device to charge the energy storage battery pack through the sliding contact device, the electric brush and the current collector; and/or when the track crane is arranged at the end part of the track to carry out loading and unloading operation, controlling the output of the ground power supply device to charge the energy storage battery pack through the sliding contact device, the electric brush and the current collector.
Further, the method further comprises: and when the hydrogen fuel in the hydrogen storage tank of the hydrogen fuel battery pack is lower than the limit value, sending out early warning information, and controlling the rail crane to operate to a maintenance area to fill the hydrogen fuel.
Compared with the prior art, the application has the advantages and positive effects that: in the power supply device and the control method for the rail crane, a power supply mode with a hydrogen fuel battery pack as a main battery pack and an energy storage battery pack as an auxiliary battery pack is adopted to provide power for operation of the rail crane, and the energy storage battery pack is subjected to concomitant charging through a sliding contact device and a current collector during the loading and unloading operation process or waiting state of the rail crane; during the process of providing power for the track crane, the electric quantity of the battery pack is always kept within an allowable range by analyzing the electric energy consumed by completing the operation instruction of the track crane and adopting the modes of common power supply of the hydrogen fuel battery pack and the energy storage battery pack, power supply of the hydrogen fuel battery pack or power supply of the energy storage battery pack for the operation instructions of different loads, so that the condition of power shortage cannot occur; compared with the existing power supply mode of the track crane, the power supply mode of the track crane cancels a cable reel, a voltage transformation and rectification inverter, a reel mechanism and the like, optimizes the structural design of the track crane, lightens the weight of the whole equipment, optimizes the structural design of the whole machine, reduces the complexity and the maintenance of the mechanism, realizes zero emission of the track crane and does not pollute the environment.
Furthermore, when the rail is hung to be treated or the end part of the rail is subjected to loading and unloading operation, the energy storage battery pack is charged through the sliding contact device and the current collector, electric energy consumed during operation in a storage yard is quickly supplemented, the battery is protected from being excessively charged and discharged, and the safe operation of the energy storage battery pack is ensured.
Furthermore, when the rail crane decelerates and the lifting mechanism descends, feedback electric quantity is stored in the energy storage battery pack, the hydrogen fuel battery pack is adopted to supply power under the condition that the electric energy consumed for finishing the operation instruction is less than or equal to the limit load and greater than the minimum limit load, meanwhile, redundant electric quantity generated by the hydrogen fuel battery pack is used for charging the energy storage battery pack, the electric energy consumed for operation in the storage yard is further supplemented, and the battery is further protected from being overcharged and overcharged.
Other features and advantages of the present application will become more apparent from the detailed description of the embodiments of the present application when taken in conjunction with the accompanying drawings.
Drawings
Fig. 1 is a device architecture diagram of a power supply device of a track crane according to the present application;
fig. 2 is a schematic structural diagram of a sliding contact device in a power supply device of a track crane according to the present application;
fig. 3 is a flowchart of a method for controlling a power supply device of a track crane according to the present application.
Detailed Description
The following describes embodiments of the present application in further detail with reference to the accompanying drawings.
The invention aims to provide a power supply device for a track crane, which optimizes the structural design of the track crane, eliminates the structures such as a cable reel, a reel mechanism, a voltage transformation, rectification, an inverter and the like in the conventional power supply structure of the track crane, lightens the whole weight of equipment, and reduces the complexity and the maintenance of the mechanism.
As shown in fig. 1, the power supply device for the rail crane provided by the invention comprises a hydrogen fuel battery pack 1, an energy storage battery pack 2, a ground power supply device 3, a sliding contact device 4 and a current collector 5; the hydrogen fuel cell set 1 is arranged on the rail crane and comprises a fuel cell set and a hydrogen storage tank, wherein hydrogen in the hydrogen storage tank enters the fuel cell set to react with oxygen to generate electric energy for the rail crane; the energy storage battery pack 2 is also arranged on the track crane; the ground power supply device 3 is arranged on the ground at two sides or two ends of the track; the sliding contact device 4 is connected with the output of the ground power supply device 3; the current collector 5 is mounted on the rail crane, connected to the energy storage battery 2, and contacts with the sliding contact device 4 through a brush (not shown in the figure), so that the output of the ground power supply device 3 charges the energy storage battery 2 through the sliding contact device 4, the brush and the current collector 5.
Based on the power supply device for the track crane, the hydrogen fuel battery pack 1 is taken as a main part, the energy storage battery pack 2 is taken as an auxiliary part, and the power supply device is jointly used for supplying power for the operation of the track crane.
The energy storage battery pack 2, such as a lithium battery pack, provided by the invention can be charged based on the electric connection of the ground power supply device 3, the sliding contact device 4, the electric brush and the current collector 5 in the loading and unloading process, so that the electric energy consumed in the operation in a storage yard can be quickly supplemented, the over-charge and over-discharge of the energy storage battery pack can be avoided, and the safe operation of the battery can be ensured.
In a preferred embodiment of the present invention, the ground power supply devices 3 are provided at both ends of the track, and when the track crane is attached to and detached from either end of the track, the output of the ground power supply devices 3 is charged to the energy storage battery pack 2 through the sliding contact device 4, the brushes, and the current collector 5 by the control of the accompanying charging control module 6. Or when the track crane is in a waiting state without loading and unloading operation, the accompanying type charging control module 6 controls the track crane to run to any end part of the track in a nearby principle, and then the output of the ground power supply device 3 is used for charging the energy storage battery pack 2 through the sliding contact device 4, the electric brush and the current collector 5.
The power supply device for the track crane further comprises an energy feedback module 7, and the energy feedback module is used for storing feedback electric quantity into the energy storage battery pack 2 when the track crane decelerates and a lifting mechanism of the track crane descends.
The invention provides a power supply device for a track crane, which takes a hydrogen fuel battery pack 1 as a main part and an energy storage battery pack 2 as an auxiliary part to jointly supply power for the operation of the track crane, and specifically is implemented by an electricity distribution module 8, during the operation of the track crane, the electricity distribution module 8 is used for analyzing the electric energy consumed by the track crane to complete an operation instruction, and different power supply modes are distributed according to different consumed electric energy: for the operation command larger than the limited load, distributing the hydrogen fuel battery pack 1 and the energy storage battery pack 2 to supply power together; distributing the power supply of the hydrogen fuel cell stack 1 for the operation command which is less than or equal to the limit load and greater than the minimum limit load; and distributing the power supply 2 of the energy storage battery pack for the operation command less than or equal to the lowest limited load, so that the electric quantity of the hydrogen fuel battery pack 1 and the electric quantity of the energy storage battery pack 2 are always kept within an allowable range, and the condition of power shortage cannot occur. The electricity distribution module 8 is also used for distributing the power supply of the hydrogen fuel cell stack 1 and charging the energy storage cell stack 2 with the excess electricity generated by the hydrogen fuel cell stack 1 when the work instruction is less than or equal to the limit load and greater than the minimum limit load, so that the hydrogen fuel is fully utilized, the utilization rate of the hydrogen fuel is improved, and useless consumption is avoided.
The power supply device of the track crane further comprises a hydrogen fuel self-supplementing device 9 and a solar power supply set 10, wherein the solar power supply set 10 collects and stores solar energy to provide a working power supply for the hydrogen fuel self-supplementing device 9, the hydrogen fuel self-supplementing device 9 is installed on the ground or the track crane and comprises a water tank and a water molecule ionization set, water is filled in the water tank, and the separated hydrogen is injected into a hydrogen storage tank by ionizing hydrogen atoms in water molecules by the water molecule ionization set.
As shown in fig. 2, the sliding contact device according to the present invention includes a sliding contact support 41 and a sliding contact guide rail 42 disposed on the sliding contact support 41, wherein an output of the ground power supply device 3 is connected to the sliding contact guide rail 42, and the current collector 5 contacts the sliding contact guide rail 42 through the brush, so as to form a charging path from the ground power supply device 3, the sliding contact guide rail 42, the brush, the current collector 5 to the energy storage battery pack 2.
The sliding contact bracket 41 is preferably an inverted L-shaped bracket; the upper end of the inverted L-shaped sliding contact support is provided with a sliding contact guide rail 42.
Based on the power supply device for the track crane, as shown in fig. 3, the invention further provides a control method for the power supply device for the track crane, which includes:
step S31: and analyzing the electric energy consumed by the track crane to complete the operation instruction.
Corresponding to the electricity distribution module 8, the electric energy consumed by the track crane to complete the work order is analyzed during the operation of the track crane.
Step S32: and when the consumed electric energy is larger than the limited load, controlling the hydrogen fuel battery pack and the energy storage battery pack to jointly supply power to the track crane.
And when the consumed electric energy required for finishing the current operation instruction is more than the limited load, controlling the hydrogen fuel battery pack and the energy storage battery pack to jointly supply power to the track crane.
Step S33: and when the consumed electric energy is less than or equal to the limit load and greater than the minimum limit load, controlling the hydrogen fuel cell stack to supply power to the rail crane.
And for the condition that the electric energy consumed for completing the current operation instruction is between the limited load and the lowest limited load, controlling the hydrogen fuel battery pack 1 to independently supply power to the rail crane, and controlling the energy storage battery pack 2 not to supply power.
Step S34: and when the consumed electric energy is less than or equal to the minimum limit load, controlling the energy storage battery pack to supply power to the track crane.
And when the consumed electric energy required for finishing the current operation instruction is less than or equal to the minimum limit load, the energy storage battery pack is controlled to independently supply power to the rail crane, and the hydrogen fuel battery pack does not supply power.
Based on the analysis of the consumed electric energy for completing the operation instruction, the power supply of the battery packs can be reasonably distributed, excessive discharge or insufficient power supply of any battery pack is avoided, and the energy waste is also avoided for ensuring the operation stability.
Further, when the track crane is in a standby state, the track crane is controlled to run to the end part of the track, and the output of the ground power supply device is controlled to charge the energy storage battery pack through the sliding contact device, the electric brush and the current collector; and/or when the rail crane is arranged at the end part of the rail to carry out loading and unloading operation, controlling the output of the ground power supply device to charge the energy storage battery pack through the sliding contact device, the electric brush and the current collector; the energy storage battery pack is charged in an adjoint mode in the operation process of the rail crane, excessive charging and discharging of the energy storage battery pack are avoided, and the service life of the energy storage battery is prolonged.
The hydrogen storage tank of the hydrogen fuel cell stack 1 is internally provided with devices such as a sensor and the like, the storage amount or the usage amount of the hydrogen fuel is detected, when the hydrogen fuel is lower than the limit value, early warning information is sent out in time, the rail crane is controlled to run to a maintenance area to be filled with the hydrogen fuel, or the hydrogen fuel is supplemented based on a hydrogen fuel self-supplementing device.
It should be noted that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art should also make changes, modifications, additions or substitutions within the spirit and scope of the present invention.
Claims (10)
1. The utility model provides a track hangs power supply unit, is applied to the track on the track and hangs which characterized in that includes:
the hydrogen fuel cell stack is arranged on the track crane and is used for supplying power to the track crane; the hydrogen in the hydrogen storage tank enters the fuel cell stack to react with oxygen to generate electric energy for the rail crane to use;
the energy storage battery pack is arranged on the track crane and supplies power for the track crane in an auxiliary way;
a ground power supply device;
the sliding contact device is connected with the output of the ground power supply device;
the current collector is arranged on the track crane and is connected with the energy storage battery pack;
the current collector is in contact with the sliding contact device through a brush, so that the output of the ground power supply device charges the stored energy battery pack through the sliding contact device, the brush and the current collector.
2. The trolley power supply of claim 1 further comprising:
the power utilization distribution module is used for analyzing the electric energy consumed by the track crane to complete the operation instruction, and distributing the hydrogen fuel battery pack and the energy storage battery pack to supply power together for the operation instruction with the consumed electric energy larger than the limited load; distributing the hydrogen fuel cell stack to supply power for the operation instruction with the consumed electric energy less than or equal to the limit load and greater than the minimum limit load; and distributing the energy storage battery pack to supply power for the work instruction with the consumed electric energy less than or equal to the minimum limit load.
3. The power supply device for the track crane according to claim 2, wherein the power distribution module is further configured to distribute the power supply of the hydrogen fuel battery pack for the operation command which is less than or equal to a limit load and greater than a minimum limit load, and use the surplus power generated by the hydrogen fuel battery pack for charging the energy storage battery pack.
4. The trolley power supply of claim 1 further comprising:
and the energy feedback module is used for storing feedback electric quantity into the energy storage battery pack when the track crane decelerates and the lifting mechanism descends.
5. The trolley power supply of claim 1 further comprising:
the adjoint charging control module is used for controlling the output of the ground power supply device to charge the energy storage battery pack through the sliding contact device, the electric brush and the current collector when the rail crane is hung at the end part of the rail to carry out loading and unloading operation; or, when the track crane is in a standby state, the track crane is controlled to run to the end part of the track, and the output of the ground power supply device is controlled to charge the energy storage battery pack through the sliding contact device, the electric brush and the current collector.
6. The power supply unit of a track crane according to claim 1, wherein the trolley comprises:
the sliding contact device comprises a sliding contact support and a sliding contact guide rail arranged on the sliding contact support;
the output of the ground power supply device is connected with the sliding contact guide rail, and the collector is in contact with the sliding contact guide rail through an electric brush.
7. The trolley power supply of claim 1 further comprising:
the hydrogen fuel self-replenishing device comprises a water tank and a water molecule ionization group, and is connected with the hydrogen storage tank;
and the solar power supply set is used for supplying power to the hydrogen fuel replenishing device through solar energy.
8. A control method of a power supply device of a track crane, which is applied to the power supply device of the track crane of claim 1, comprises the following steps:
analyzing the electric energy consumed by the track crane to complete the operation instruction;
when the consumed electric energy is larger than a limited load, controlling the hydrogen fuel battery pack and the energy storage battery pack to jointly supply power to the track crane;
when the consumed electric energy is less than or equal to a limit load and greater than a minimum limit load, controlling the hydrogen fuel cell stack to supply power to the rail crane;
and when the consumed electric energy is less than or equal to the lowest limit load, controlling the energy storage battery pack to supply power to the track crane.
9. The method of controlling a power supply for a track-bound crane according to claim 8, further comprising:
when the track crane is in a standby state, controlling the track crane to run to the end part of a track, and controlling the output of the ground power supply device to charge the energy storage battery pack through the sliding contact device, the electric brush and the current collector; and/or the presence of a gas in the gas,
and when the rail crane is arranged at the end part of the rail to carry out loading and unloading operation, the output of the ground power supply device is controlled to charge the energy storage battery pack through the sliding contact device, the electric brush and the current collector.
10. The method of controlling a power supply for a track-bound crane according to claim 8, further comprising:
and when the hydrogen fuel in the hydrogen storage tank of the hydrogen fuel cell stack is lower than the limit value, sending out early warning information, and controlling the rail crane to operate to a maintenance area to fill the hydrogen fuel or to supplement the hydrogen fuel through a hydrogen fuel self-supplement device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911135010.5A CN111017724A (en) | 2019-11-19 | 2019-11-19 | Power supply device for track crane and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911135010.5A CN111017724A (en) | 2019-11-19 | 2019-11-19 | Power supply device for track crane and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111017724A true CN111017724A (en) | 2020-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911135010.5A Withdrawn CN111017724A (en) | 2019-11-19 | 2019-11-19 | Power supply device for track crane and control method thereof |
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| Country | Link |
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| CN (1) | CN111017724A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112671093A (en) * | 2021-01-28 | 2021-04-16 | 青岛港国际股份有限公司 | Power supply device and power supply control method for air rail collection and distribution system |
-
2019
- 2019-11-19 CN CN201911135010.5A patent/CN111017724A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112671093A (en) * | 2021-01-28 | 2021-04-16 | 青岛港国际股份有限公司 | Power supply device and power supply control method for air rail collection and distribution system |
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Application publication date: 20200417 |
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