CN112078369A - Regenerative braking energy feedback device for urban rail transit train - Google Patents
Regenerative braking energy feedback device for urban rail transit train Download PDFInfo
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- CN112078369A CN112078369A CN202010784758.4A CN202010784758A CN112078369A CN 112078369 A CN112078369 A CN 112078369A CN 202010784758 A CN202010784758 A CN 202010784758A CN 112078369 A CN112078369 A CN 112078369A
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- 230000001172 regenerating effect Effects 0.000 title claims abstract description 47
- 238000004146 energy storage Methods 0.000 claims abstract description 198
- 239000000178 monomer Substances 0.000 claims abstract description 67
- 238000001816 cooling Methods 0.000 claims abstract description 24
- 238000009423 ventilation Methods 0.000 claims abstract description 18
- 230000003993 interaction Effects 0.000 claims abstract description 17
- 238000012544 monitoring process Methods 0.000 claims abstract description 13
- 238000001914 filtration Methods 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- 230000002457 bidirectional effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/10—Dynamic electric regenerative braking
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
- B60L50/66—Arrangements of batteries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
- B60L58/22—Balancing the charge of battery modules
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/30—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells
- B60L58/32—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells for controlling the temperature of fuel cells, e.g. by controlling the electric load
- B60L58/33—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells for controlling the temperature of fuel cells, e.g. by controlling the electric load by cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/545—Temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/547—Voltage
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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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a regenerative braking energy feedback device for an urban rail transit train, which comprises a plurality of energy storage modules, an energy storage cabinet body, a plurality of equalizing plates, a contactor, a ventilation cooling system, a human-computer interaction interface, a control management system, a fuse and a remote monitoring terminal, wherein the energy storage modules are arranged on the energy storage cabinet body; the plurality of equalizing plates are used for acquiring temperature data and voltage data of each energy storage module; the balancing plates are also used for balancing the voltage of the single body in each energy storage module; the control management system is also used for controlling the on-off of the contactor according to the voltage data acquired by each equalizing plate; in the regenerative braking energy feedback device, the voltage states of the single body, the energy storage module and the feedback device in the regenerative braking energy feedback device of the urban rail transit train can be monitored in real time and can also be monitored remotely; the disconnection of a single monomer in the regenerative braking energy feedback device of the urban rail transit train does not influence the operation of the whole feedback device.
Description
Technical Field
The invention relates to the technical field of ground energy storage devices, in particular to an energy storage device of a regenerative braking energy ground utilization system of an urban rail transit train.
Background
With the attention of the country and the industry on the aspects of green, energy conservation, environmental protection and the like, the ground utilization system applied to the regenerative braking energy of the urban rail transit train is gradually normalized. The system is characterized in that the standard of GB/T36287-2018 urban rail transit train regenerative braking energy ground utilization system formally implemented in 01.01.2019, wherein the urban rail transit regenerative braking energy ground utilization system is definitely divided into a feedback type regenerative braking energy ground utilization system, a storage type regenerative braking energy ground utilization system and a hybrid type regenerative braking energy utilization system; the method has a good promoting effect on industry standardized design.
In the current scheme, most schemes are used for explaining the whole device of the regenerative braking energy ground utilization system. For example, publication No. CN201410392198 discloses a line energy storage device, which is connected to a storage unit through a converter unit, the converter unit and the storage unit act together to store subway braking renewable energy, and the characteristic that a super capacitor formed by a second capacitor and a third capacitor has a high charging and discharging speed is utilized to realize that energy stored in the storage unit is preferentially compensated for a power grid when a subway vehicle starts and accelerates, and feed is stored through the storage unit when the vehicle decelerates and brakes, so as to realize energy recycling. The utility model with publication number CN201320349978 discloses a super capacitor line energy storage system, which comprises a signal input device, a variable flow control device and an energy storage device; the signal input device is used for inputting signals to the control converter device and controlling the start/stop of the converter control device; the variable-current control device comprises a main control module and a bidirectional DC-DC conversion module electrically connected with the main control module, and the energy storage device is electrically connected with the bidirectional DC-DC conversion module and used for storing/releasing electric energy.
The patent does not relate to the specific structure of the regenerative braking energy feedback energy storage device of the urban rail transit train and the specific concept of enabling the energy storage device to stably store energy; no feedback energy storage device is provided to meet the standard of GB/T36287-2018 ground utilization system for regenerative braking energy of urban rail transit trains.
Disclosure of Invention
Aiming at the defects in the prior art, the invention discloses a regenerative braking energy feedback device of an urban rail transit train, aiming at providing a specific structure of the regenerative braking energy feedback energy storage device of the urban rail transit train and a specific concept for enabling the energy storage device to stably store energy; and meets the standard of GB/T36287 and 2018 ground utilization system for regenerative braking energy of urban rail transit trains.
A regenerative braking energy feedback device for an urban rail transit train comprises:
the energy storage module is formed by connecting a plurality of monomer groups in series, and each monomer group is formed by connecting a plurality of monomers in parallel;
the energy storage cabinet body contains and fixes a plurality of energy storage modules which are connected in series through a connecting bus; the energy storage cabinet body is also provided with a cabinet door, and the width, depth and height of the energy storage cabinet body are respectively less than or equal to 1300mm, 1300m and 2500 mm; the opening angle of the cabinet door can be more than 120 degrees, and the width of the cabinet door is less than or equal to 800 mm;
the plurality of equalizing plates are used for acquiring temperature data and voltage data of each energy storage module; the balancing plates are also used for balancing the voltage of the single body in each energy storage module;
the contactor is arranged in the energy storage cabinet body and used for cutting off the operation of the regenerative braking energy feedback device of the urban rail transit train when the temperature in the energy storage module is overhigh or the voltage of the single body is overhigh;
the ventilation cooling system is arranged on the energy storage cabinet body and used for ventilating the interior of the energy storage cabinet body to cool each energy storage module;
the human-computer interaction interface is arranged on the energy storage cabinet body;
the control management system is arranged on the energy storage cabinet body and used for controlling the starting and stopping of the ventilation cooling system and controlling the on and off of the contactor according to the temperature data acquired by each balance plate; the control management system is also used for controlling the on-off of the contactor according to the voltage data acquired by each equalizing plate; and when the control management system receives the temperature data and the voltage data collected by each equalizing board, the temperature data and the voltage data are sent to a human-computer interaction interface for the human-computer interaction interface to display.
Preferably, the system further comprises a remote monitoring terminal for remotely monitoring the temperature and the voltage in each energy storage module; and when the control management system receives the temperature data and the voltage data collected by each equalizing board, the control management system also sends the temperature data and the voltage data to a remote monitoring terminal.
Preferably, in the energy storage module, three/four monomers are connected in parallel to form a monomer group, and eight/six energy storage modules are connected in series to form an energy storage module; the energy storage module further comprises an open type frame used for fixing the plurality of single bodies, and the single bodies in the energy storage module are provided with gaps.
Preferably, each parallel node of the single bodies in the energy storage module in parallel is provided with a voltage detection point, and the balancing board collects the voltage of each parallel node in real time to obtain the voltage of each single body group in the energy storage module.
Preferably, the control management system is further configured to control the balancing board to balance the voltage of each cell group in the energy storage module corresponding to the balancing board; the control management system acquires the maximum voltage difference between the monomer groups in the energy storage module according to the voltages of the parallel nodes acquired by the equalizing board, and if the maximum voltage difference is higher than a first preset threshold value, the control management system starts an equalizing circuit in the equalizing board to transfer the electric quantity in the monomer group with the highest voltage value in the energy storage module to the monomer group with the lowest voltage value in the energy storage module until the maximum voltage difference is lower than the first preset threshold value.
Preferably, the balancing resistors are arranged in the cell groups, the balancing board collects voltages of all parallel nodes in the energy storage module and obtains a maximum voltage difference between all cell groups in the energy storage module, and if the maximum voltage difference is higher than a second preset threshold, the balancing resistors are used for discharging to consume energy of the cell group with the highest voltage in the energy storage module until the voltage difference between the cell group with the highest voltage and the cell group with the lowest voltage in the energy storage module is smaller than the second preset threshold.
Preferably, the connection busbar is provided with a connection point which is connected with the energy storage module and faces the outer side of the energy storage cabinet body.
Preferably, the control management system further comprises a communication cable, and the control management system is connected with a plurality of the equalization boards through the communication cable.
Preferably, the ventilation cooling system comprises a dustproof filtering device, an air duct and a cooling fan; the cooling fan is arranged on the energy storage cabinet body and used for extracting hot air in the energy storage cabinet body, the air channel is arranged in the energy storage cabinet body, the dustproof filtering device is used for filtering air flow entering the energy storage cabinet body, and the air flow entering the energy storage cabinet body cools each energy storage module through air channel shunting.
Preferably, the human-computer interaction interface comprises an HMI display screen, a work indicator light and a display instrument, and the HMI display screen and the display instrument simultaneously display the voltage value and the current value of the regenerative braking energy feedback device of the urban rail transit train; the working indicator lamp comprises an operation indicator lamp and a fault indicator lamp, and the display instrument comprises a voltage instrument and a current instrument.
Compared with the prior art, the invention has at least the following beneficial effects:
1. the voltage states of the single bodies, the energy storage modules and the feedback device in the regenerative braking energy feedback device of the urban rail transit train can be monitored in real time and can also be monitored remotely.
2. The disconnection of a single monomer in the regenerative braking energy feedback device of the urban rail transit train does not influence the operation of the whole feedback device.
3. The regenerative braking energy feedback device of the urban rail transit train meets the standard of GB/T36287-2018 ground utilization system of regenerative braking energy of the urban rail transit train, which is formally implemented on 01.01.2019.
4. The energy storage module adopts an open type frame, and a gap is formed between the single bodies of the energy storage module, so that the heat dissipation of the energy storage module is facilitated.
5. The voltage among the monomers in the energy storage module can be actively or passively balanced, so that the maximum voltage difference in the energy storage module is within a preset range, and the operation stability of the feedback device is ensured.
6. The control management system, the contactor and the fuse are all arranged in the energy storage cabinet body and are positioned at the lower end of the energy storage cabinet body, when manual wiring or maintenance is needed, maintenance personnel can conveniently contact with maintenance parts, items among the energy storage modules are independent, and the peripheral energy storage modules are not affected when the energy storage modules are replaced; the maintenance work can be finished by a single person; the connecting busbar is provided with a connecting point which is connected with the energy storage module and faces the outer side of the energy storage cabinet body, so that the energy storage module is convenient to disassemble and assemble.
7. The hot air in the energy storage cabinet body can be pumped out through the ventilation cooling fan, and the service life of the feedback device is prolonged.
Drawings
Fig. 1 is a front view of an energy storage cabinet in an embodiment of the invention.
Fig. 2 is a layout view of the regenerative braking energy feedback device of the urban rail transit train in the embodiment of the invention.
Fig. 3 is a structural block diagram of operation control of the regenerative braking energy feedback device of the urban rail transit train in the embodiment of the invention.
Fig. 4 is a circuit diagram of the regenerative braking energy feedback device of the urban rail transit train in the embodiment of the invention.
Wherein, 1, the energy storage cabinet body; 2. an energy storage module; 3. a balancing plate; 4. a control management system; 5. connecting a busbar; 6. a contactor; 7. a fuse; 8. a communication cable; 9. a ventilation cooling system; 10. a dust-proof filtering device; 11. a human-computer interaction interface; 12. a work indicator light; 13. a display instrument; 14. a remote monitoring terminal; 15. an emergency control button; 2a, monomer group.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
Referring to the attached drawings 1-4, the invention discloses a regenerative braking energy feedback device of an urban rail transit train, which can realize regenerative braking energy feedback energy storage of the urban rail transit train functionally, the running state of the feedback device can be monitored in real time, the running states of monomers in an energy storage module 2 and even an energy storage module 2 in the feedback device can be monitored in real time, the real-time voltage and the real-time temperature of each monomer can be monitored through a balance plate, in order to ensure the stable running of each monomer in the energy storage module 2, the voltage of each monomer group 2a in the energy storage module 2 is balanced through a balance plate 3, the situation that part of the monomers are overcharged and the other part of the monomers are overcharged is avoided, and further part of the monomers are damaged or the service life of the part of the monomers is influenced; the running state of the feedback device and even the real-time temperature and the real-time voltage of each monomer in each energy storage module 2 can be monitored remotely.
The disconnection (open circuit) of a part of monomers in the feedback device can not damage other monomers, and the influence on the operation of the whole feedback device is small.
In order to ensure the operation safety and the operation temperature of the whole feedback device, the on-off of the contactor 6 can be controlled according to the real-time detected temperature data and voltage data, and if the detected voltage data or temperature data is overhigh, the contactor 6 in the feedback device can be automatically controlled to be switched off so as to protect the whole feedback device.
The feedback device is provided with a fuse 7, the fuse 7 can be actively fused, the feedback device is prevented from continuously operating when a short circuit occurs outside the feedback device, and the circuit safety of the whole feedback device is protected.
In order to improve the service life of the whole feedback device and the operation stability of the feedback device, the ventilation cooling system 9 is used for radiating the feedback device, so that the internal temperature of the feedback device in operation is stabilized within a preset temperature range.
A regenerative braking energy feedback device for an urban rail transit train comprises a plurality of energy storage modules 2, an energy storage cabinet body 1, a plurality of equalizing plates 3, a contactor 6, a ventilation cooling system 9, a human-computer interaction interface 11, a control management system 4, a fuse 7 and a remote monitoring terminal 14.
The energy storage modules 2 are arranged in the energy storage cabinet body 1 and are connected in series through a connecting bus bar 5; the connecting structure of the energy storage modules 2 in the energy storage cabinet body 1 is very simple, and particularly, the connecting bus bar 5 is provided with a connecting point which is connected with the energy storage modules 2 and faces the outer side of the energy storage cabinet body 1, so that the energy storage modules 2 are convenient to disassemble, assemble and maintain; when the energy storage module 2 in the energy storage cabinet body 1 is disassembled and assembled, the cabinet door of the energy storage cabinet body 1 is opened, and the energy storage module 2 in the energy storage cabinet body 1 can be directly disassembled and assembled, so that the disassembly and assembly are very convenient.
In this embodiment, the width, depth and height of the energy storage cabinet 1 are respectively less than or equal to 1300mm, 1300m and 2500 mm; the opening angle of the cabinet door can be more than 120 degrees, and the width of the cabinet door is less than or equal to 800 mm; the standard of GB/T36287-2018 urban rail transit train regenerative braking energy ground utilization system officially implemented on 01.01.2019 is met.
The energy storage module 2 is formed by connecting a plurality of monomer groups 2a in series, and each monomer group 2a is formed by connecting a plurality of monomers in parallel; in this embodiment, the monomers in the energy storage module 2 are connected in parallel and then connected in series, and a three-parallel-eight-series form is adopted, specifically, the plurality of monomers are divided into eight monomer groups 2a, the eight monomer groups 2a are connected in series to form the energy storage module 2, and each monomer group 2a is formed by connecting three monomers in parallel.
The single body in the energy storage module 2 disclosed in this embodiment adopts a three-parallel eight-string connection form, and the energy storage module 2 does not affect the working state of the whole energy storage module 2 and even the whole feedback device because the single body is electrically disconnected in a short time; for example, if a single body is electrically disconnected, the other two single bodies in the single body group 2a where the single body is located can still work normally, and therefore, the working state of the entire energy storage module 2 and even the entire feedback device is not affected.
The single bodies in the energy storage module 2 are connected in a parallel-series connection mode, so that the voltage of each single body in the whole energy storage module 2 is more stable; the three monomers are connected in parallel to form a monomer group 2a, and the voltages of the monomers in the monomer group 2a are equal, so that the voltage difference between the monomer groups 2a connected in series in the energy storage module 2 is smaller, in order to more clearly express the characteristic that the energy storage module 2 in this embodiment adopts three parallel eight series, compared with the common energy storage module 2 formed by connecting monomers in series, in the actually produced monomers, even if the single bodies with the same model number have different performances, the common energy storage module 2 is formed by connecting the single bodies in series, the differences among the single bodies can be completely displayed during charging and discharging, the performance of the common energy storage module 2 is unstable, in the energy storage module 2, three monomers are connected in parallel to form a monomer group 2a, and the voltage of the monomer group 2a is the voltage of the monomers, so that the voltage difference between the monomer groups 2a is weakened.
The energy storage module 2 can discharge electricity and meet the condition that the residual voltage is lower than 36V.
The plurality of equalizing plates 3 are used for acquiring temperature data and voltage data of each energy storage module 2; the balancing plates 3 are also used for balancing the voltage of the single body in each energy storage module 2; in this embodiment, the equalizing plate 3 is installed on the outer side facing the energy storage cabinet 1, and for accurate measurement, more than two paths of temperature measurement are generally set for measuring the temperature of each energy storage module 2.
In this embodiment, set up nine check points in energy storage module 2, detect eight monomer group 2 a's in the energy storage module 2 voltage through nine check points, the voltage of monomer group 2a also is monomeric voltage, this application sets up nine check points in energy storage module 2, equalizer plate 3 acquires the voltage of each monomer group 2a and the voltage of energy storage module 2 through nine check points in the energy storage module 2, wherein, the voltage of monomer group 2a equals with the voltage of the monomer in this monomer group 2a, consequently, equalizer plate 3 can monitor each monomeric voltage in energy storage module 2 and energy storage module 2 in real time.
In this embodiment, the equalizing board 3 sends the collected temperature data and voltage data of the energy storage module 2 to the control management system 4, and the control management system 4 sends the temperature data and the voltage data to the human-computer interaction interface 11 and the remote monitoring terminal 14.
The contactor 6 is arranged in the energy storage cabinet body 1, and the contactor 6 is connected with an energy storage module 2 in the energy storage cabinet body 1.
The condition that the contactor cuts off the operation of the regenerative braking energy feedback device of the urban rail transit train when the temperature in the energy storage module is too high or the voltage of the single body is too high is as follows:
when the equalizing plate 3 detects that the temperature in the energy storage module 2 is too high and is higher than a first preset temperature value, the control management system 4 controls the contactor 6 to be switched off; the contactor 6 can carry out main control when the energy storage device gives an alarm through a control system and an emergency control button 15, so that the fault is prevented from being enlarged.
When the equalizing board 3 detects that the voltage of the single body in the energy storage module 2 is too high and higher than a preset voltage, the control management system 4 controls the contactor 6 to be switched off; the invention protects the operation of the feedback device by arranging the contactor 6.
The ventilation cooling system 9 is arranged in the energy storage cabinet body 1, and the ventilation cooling system 9 is used for ventilating the interior of the energy storage cabinet body 1 to cool each energy storage module 2; when the equalizing plate 3 detects that the temperature in the energy storage modules 2 is higher than a second preset temperature value, the control and management system 4 controls the ventilation cooling system 9 to start so as to cool each energy storage module 2 in the energy storage cabinet body 1.
The human-computer interaction interface 11 is arranged on the energy storage cabinet body 1, so that an operator can conveniently input the operation parameters of the whole feedback device, the operation of the whole feedback device can be manually controlled, and the human-computer interaction interface 11 can also display the operation parameters of the feedback device, so that the operator can conveniently check the operation state of the feedback device.
The control management system 4 is used for controlling the start and stop of the ventilation cooling system 9 and controlling the on and off of the contactor 6 according to the temperature data collected by each balance plate 3; the control management system 4 is also used for controlling the on-off of the contactor 6 according to the voltage data collected by each equalizing plate 3; and when receiving the temperature data and the voltage data collected by each equalizing board 3, the control management system 4 sends the temperature data and the voltage data to the human-computer interaction interface 11 for the human-computer interaction interface 11 to display.
The remote monitoring terminal 14 remotely monitors the temperature and the voltage in each energy storage module 2; when receiving the temperature data and the voltage data collected by each balance board 3, the control management system 4 also sends the temperature data and the voltage data to the remote monitoring terminal 14.
The energy storage module 2 further comprises an open frame for fixing the plurality of monomers, the monomers in the energy storage module 2 are provided with gaps, and when the ventilation cooling system 9 is opened, the ventilation of each monomer in the energy storage module 2 can be facilitated, and the heat dissipation of the energy storage module 2 is facilitated.
In this embodiment, each parallel node of the energy storage module 2 in which the monomers are connected in parallel is provided with a voltage detection point, and the balancing board 3 collects the voltage at each parallel node in real time to obtain the voltage of each monomer group 2a in the energy storage module 2.
In this embodiment, the active equalization manner of the single body in the energy storage module 2: the control management system 4 is further configured to control the balancing board 3 to balance the voltage of each cell group 2a in the energy storage module 2 corresponding to the balancing board 3; the control management system 4 acquires the maximum voltage difference between the monomer groups 2a in the energy storage module 2 according to the voltages of the parallel nodes acquired by the balancing board 3, and if the maximum voltage difference is higher than a first preset threshold, the control management system 4 starts a balancing circuit in the balancing board 3 to transfer the electric quantity in the monomer group 2a with the highest voltage value in the energy storage module 2 to the monomer group 2a with the lowest voltage value in the energy storage module 2 until the maximum voltage difference is lower than the first preset threshold.
In this implementation is novel, the passive balanced mode of energy storage module 2: the cell group 2a is provided with a balancing resistor, and the balancing resistor is used for discharging to consume the energy of the cell group 2a with the highest voltage in the energy storage module until the voltage difference between the cell group 2a with the highest voltage and the cell group 2a with the lowest voltage in the energy storage module 2 is smaller than a second preset threshold value.
The feedback device further comprises a communication cable 8, the control management system 4 is connected with the equalization boards 3 through the communication cable 8, and the control management system 4 realizes signal transmission with the equalization boards 3 through the communication cable 8.
The ventilation cooling system 9 comprises a dustproof filtering device 10, an air duct and a cooling fan; the cooling fan sets up on the energy storage cabinet body 1 and is arranged in taking out the steam in the energy storage cabinet body 1, the wind channel sets up in the energy storage cabinet body 1, dustproof filter equipment 10 is used for filtering the air current that gets into the energy storage cabinet body 1, and the air current that gets into in the energy storage cabinet body 1 is through each energy storage module 2 of wind channel reposition of redundant personnel cooling.
The human-computer interaction interface 11 comprises an HMI display screen, a working indicator lamp 12 and a display instrument 13, wherein the HMI display screen and the display instrument 13 simultaneously display the voltage value and the current value of the regenerative braking energy feedback device of the urban rail transit train; the operation indicator lamp 12 includes an operation indicator lamp and a fault indicator lamp, and the display instrument 13 includes a voltage instrument and a current instrument.
In this embodiment, the energy storage cabinet 1 is provided with an emergency stop control button for controlling emergency stop of the feedback device in an emergency, and the emergency stop of the feedback device can be controlled by the remote monitoring terminal 14.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (10)
1. The utility model provides an urban rail transit train regenerative braking energy feedback device which characterized in that includes:
the energy storage module is formed by connecting a plurality of monomer groups in series, and each monomer group is formed by connecting a plurality of monomers in parallel;
the energy storage cabinet body contains and fixes a plurality of energy storage modules which are connected in series through a connecting bus; the energy storage cabinet body is also provided with a cabinet door, and the width, depth and height of the energy storage cabinet body are respectively less than or equal to 1300mm, 1300m and 2500 mm; the opening angle of the cabinet door can be more than 120 degrees, and the width of the cabinet door is less than or equal to 800 mm;
the plurality of equalizing plates are used for acquiring temperature data and voltage data of each energy storage module; the balancing plates are also used for balancing the voltage of the single body in each energy storage module;
the contactor is arranged in the energy storage cabinet body and used for cutting off the operation of the regenerative braking energy feedback device of the urban rail transit train when the temperature in the energy storage module is overhigh or the voltage of the single body is overhigh;
the ventilation cooling system is arranged on the energy storage cabinet body and used for ventilating the interior of the energy storage cabinet body to cool each energy storage module;
the human-computer interaction interface is arranged on the energy storage cabinet body;
the control management system is arranged on the energy storage cabinet body and used for controlling the starting and stopping of the ventilation cooling system and controlling the on and off of the contactor according to the temperature data acquired by each balance plate; the control management system is also used for controlling the on-off of the contactor according to the voltage data acquired by each equalizing plate; and when the control management system receives the temperature data and the voltage data collected by each equalizing board, the temperature data and the voltage data are sent to a human-computer interaction interface for the human-computer interaction interface to display.
2. The regenerative braking energy feedback device of the urban rail transit train according to claim 1, further comprising a remote monitoring terminal for remotely monitoring the temperature and voltage in each energy storage module; and when the control management system receives the temperature data and the voltage data collected by each equalizing board, the control management system also sends the temperature data and the voltage data to a remote monitoring terminal.
3. The regenerative braking energy feedback device of the urban rail transit train according to claim 1, wherein three/four monomers are connected in parallel to form a monomer group, and eight/six monomer groups are connected in series to form an energy storage module group in the energy storage module group; the energy storage module further comprises an open type frame used for fixing the plurality of single bodies, and the single bodies in the energy storage module are provided with gaps.
4. The regenerative braking energy feedback device for the urban rail transit train as claimed in claim 3, wherein each parallel node of the parallel connection of the single bodies in the energy storage module is provided with a voltage detection point, and the equalizing plate collects the voltage at each parallel node in real time to obtain the voltage of each single body group in the energy storage module.
5. The regenerative braking energy feedback device of the urban rail transit train according to claim 4, wherein the control management system is further configured to control the balancing board to balance the voltage of each single set in the energy storage module corresponding to the balancing board; the control management system acquires the maximum voltage difference between the monomer groups in the energy storage module according to the voltages of the parallel nodes acquired by the equalizing board, and if the maximum voltage difference is higher than a first preset threshold value, the control management system starts an equalizing circuit in the equalizing board to transfer the electric quantity in the monomer group with the highest voltage value in the energy storage module to the monomer group with the lowest voltage value in the energy storage module until the maximum voltage difference is lower than the first preset threshold value.
6. The regenerative braking energy feedback device of the urban rail transit train according to claim 4 or 5, wherein a balancing resistor is arranged in each single group, the balancing board collects the voltage of each parallel node in the energy storage module and obtains the maximum voltage difference between each single group in the energy storage module, and if the maximum voltage difference is higher than a second preset threshold, the balancing resistor is used for discharging to consume the energy of the single group with the highest voltage in the energy storage module until the voltage difference between the single group with the highest voltage and the single group with the lowest voltage in the energy storage module is smaller than the second preset threshold.
7. The regenerative braking energy feedback device of the urban rail transit train according to claim 1, wherein the connecting bus bar is provided with a connecting point which is connected with the energy storage module and faces the outside of the energy storage cabinet.
8. The regenerative braking energy feedback device for the urban rail transit train according to claim 1, further comprising a communication cable, wherein the control management system is connected to the plurality of equalizing plates through the communication cable.
9. The regenerative braking energy feedback device of the urban rail transit train according to claim 1, wherein the ventilation cooling system comprises a dustproof filtering device, an air duct and a cooling fan; the cooling fan is arranged on the energy storage cabinet body and used for extracting hot air in the energy storage cabinet body, the air channel is arranged in the energy storage cabinet body, the dustproof filtering device is used for filtering air flow entering the energy storage cabinet body, and the air flow entering the energy storage cabinet body cools each energy storage module through air channel shunting.
10. The regenerative braking energy feedback device of the urban rail transit train according to claim 1, wherein the human-computer interaction interface comprises an HMI display screen, a work indicator light and a display instrument, and the HMI display screen and the display instrument simultaneously display a voltage value and a current value of the regenerative braking energy feedback device of the urban rail transit train; the working indicator lamp comprises an operation indicator lamp and a fault indicator lamp, and the display instrument comprises a voltage instrument and a current instrument.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010784758.4A CN112078369A (en) | 2020-08-06 | 2020-08-06 | Regenerative braking energy feedback device for urban rail transit train |
| PCT/CN2021/094634 WO2022028040A1 (en) | 2020-08-06 | 2021-05-19 | Regenerative braking energy feedback device for urban rail transit train |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010784758.4A CN112078369A (en) | 2020-08-06 | 2020-08-06 | Regenerative braking energy feedback device for urban rail transit train |
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| CN112078369A true CN112078369A (en) | 2020-12-15 |
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| CN202010784758.4A Pending CN112078369A (en) | 2020-08-06 | 2020-08-06 | Regenerative braking energy feedback device for urban rail transit train |
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| WO (1) | WO2022028040A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022028040A1 (en) * | 2020-08-06 | 2022-02-10 | 宁波中车新能源科技有限公司 | Regenerative braking energy feedback device for urban rail transit train |
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| WO2022028040A1 (en) | 2022-02-10 |
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