CN115891697A - Flexible charging method for tramcar - Google Patents
Flexible charging method for tramcar Download PDFInfo
- Publication number
- CN115891697A CN115891697A CN202310029713.XA CN202310029713A CN115891697A CN 115891697 A CN115891697 A CN 115891697A CN 202310029713 A CN202310029713 A CN 202310029713A CN 115891697 A CN115891697 A CN 115891697A
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- Prior art keywords
- tramcar
- vehicle
- charging
- lithium titanate
- management system
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- 238000007600 charging Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 19
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 25
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000003990 capacitor Substances 0.000 claims abstract description 25
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 25
- 238000004146 energy storage Methods 0.000 claims abstract description 16
- 238000002955 isolation Methods 0.000 claims abstract description 10
- 230000002035 prolonged effect Effects 0.000 claims abstract description 4
- 230000002457 bidirectional effect Effects 0.000 claims description 10
- 238000010248 power generation Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000005286 illumination Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010277 constant-current charging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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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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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a flexible charging method for a tramcar, and relates to the technical field of tramcar charging. The flexible charging method for the tramcar comprises a photo-thermal power station, a tramcar platform, a box-type substation, a vehicle-mounted super capacitor, a vehicle-mounted lithium titanate battery and a ground energy storage system, wherein the box-type substation comprises an EMS energy management system, a BMS battery management system, a direct-current switch cabinet, a transformer, a rectifier and a feeder isolation cabinet, the EMS energy management system can adjust the charging power of the tramcar under different car conditions, the service lives of the vehicle-mounted super capacitor and the vehicle-mounted lithium titanate battery are prolonged, the vehicle-mounted super capacitor ensures that the tramcar enters the station for 30 seconds and is fully filled, dynamic balance of vehicle energy consumption and supply is realized, the whole-course uninterrupted operation of the tramcar is ensured, and the vehicle-mounted lithium titanate battery can compensate and supply power for the tramcar under an emergency state.
Description
Technical Field
The invention relates to the technical field of tramcar charging, in particular to a flexible charging method for a tramcar.
Background
The tramcar has been widely popularized and applied due to the advantages of energy conservation, environmental protection, safety, convenience and the like.
The existing relatively perfect charging system of the tramcar in the present part of technology, this charging system mainly sets up in the station and fills electric pile, and after detecting the tramcar and entering the station through electronic tags, the pantograph that sets up supplies power for the energy memory on the tramcar, this charging system usually uses the constant current charging mode to upper limit with energy memory charging value operating voltage earlier, gets into the constant voltage mode of charging again, cuts off the power supply after the pressure differential satisfies the set value, charges and accomplishes.
However, in the prior art, the charging system has low charging efficiency when the tramcar is charged in a station, cannot supply power for compensation of the tramcar in an emergency state, and cannot adjust the charging power of the tramcar according to different vehicle conditions, so that the service lives of the vehicle-mounted super capacitor and the vehicle-mounted lithium titanate battery are greatly reduced.
Disclosure of Invention
The invention aims to provide a flexible charging method for a tramcar, which can solve the problems that the service life of a vehicle-mounted super capacitor and a vehicle-mounted lithium titanate battery is greatly shortened due to the fact that the charging efficiency is low when the tramcar is charged in a station, power cannot be compensated and supplied to the tramcar in an emergency state, and the charging power of the tramcar cannot be adjusted according to the tramcar under different vehicle conditions.
In order to achieve the purpose, the invention provides the following technical scheme: a flexible charging method for a tramcar comprises a photo-thermal power station, a tramcar platform, a box-type substation, a vehicle-mounted super capacitor, a vehicle-mounted lithium titanate battery and a ground energy storage system, wherein the box-type substation comprises an EMS energy management system, a BMS battery management system, a direct-current switch cabinet, a transformer, a rectifier and a feeder isolation cabinet, the EMS energy management system can comprehensively monitor the state of each accessed energy, a cluster communication and intelligent balance algorithm is adopted to determine each access proportion, and the EMS energy management system can also adjust the charging power of the tramcar under different car conditions, so that the service lives of the vehicle-mounted super capacitor and the vehicle-mounted lithium titanate battery are prolonged.
Preferably, the BMS battery management system adopts a bidirectional active equalization strategy, eliminates series loss, monitors the voltage and current of the vehicle-mounted super capacitor and the vehicle-mounted lithium titanate battery, avoids overcharge, overdischarge, overcurrent, overtemperature and short circuit, detects the safety state of the battery in real time, accurately estimates the SOC/SOH, and ensures efficient, reliable and safe operation of the energy storage system.
Preferably, the feeder isolation cabinet comprises a direct-current isolation switch and a contactor diode, and the feeder side can be isolated by on-off of the contactor for maintenance operation.
Preferably, the box-type substation can receive 10kV electric energy of a national grid, can also receive electric energy of the photo-thermal power station through a ground energy storage system, and can also receive electric energy of the photovoltaic power generation system through inverter transmission.
Preferably, the energy storage charging equipment internally comprises a bidirectional DC/DC and a contactor/diode, the bidirectional DC/DC and the contactor/diode are transmitted to a charging rail through a cable b, the contactor can receive signals to perform charging control, and when the tramcar enters the station, the electric energy of the charging rail is drawn through a pantograph at the top of the tramcar and is transmitted to a vehicle-mounted super capacitor and a vehicle-mounted lithium titanate battery to finish the charging of the station.
Preferably, the method is suitable for flexible charging of the tramcar, can ensure that the tramcar uses multiple new energy sources to access, stabilize new energy fluctuation, develop green energy, ensure that the vehicle is full of the vehicle in 30 seconds after entering the station by the vehicle-mounted super capacitor, realize vehicle energy consumption and supply dynamic balance, ensure the whole-course uninterrupted operation of the vehicle, the vehicle-mounted lithium titanate battery can compensate and supply power for the vehicle in an emergency state, and improve the emergency capacity of vehicle operation.
Compared with the prior art, the invention has the beneficial effects that:
the flexible charging method for the tramcar improves the service life of a vehicle-mounted super capacitor, prolongs the service life of a vehicle-mounted lithium titanate battery by 10 percent, improves the operation benefit by 15 percent, can adjust the charging power of the tramcar under different vehicle conditions by an EMS energy management system, improves the service life of the vehicle-mounted super capacitor and the vehicle-mounted lithium titanate battery, and ensures the efficient, reliable and safe operation of an energy storage system by accurately estimating the SOC/SOH by adopting a bidirectional active equalization strategy and eliminating the series loss by monitoring the voltage and the current of the vehicle-mounted super capacitor and the vehicle-mounted lithium titanate battery so as to avoid overcharge, overdischarge, overcurrent, overtemperature and short circuit.
Drawings
The invention is further illustrated with reference to the following figures and examples:
FIG. 1 is a schematic diagram of the general structure of the present invention;
fig. 2 is a schematic diagram of the box-type substation of the present invention.
Reference numerals are as follows: 1. a photo-thermal power station; 2. a ground energy storage system; 3. a photovoltaic power generation system; 4. a charging rail; 5. a vehicle-mounted super capacitor; 6. a pantograph; 7. a vehicle-mounted lithium titanate battery; 8. an energy storage charging device; 9. an inverter; 10. a tramcar platform; 11. a box-type substation; 12. a cable a; 13. a cable b; 14. a cable c; 15. a cable d; 16. a cable e; 17. a cable f; 101. an EMS energy management system; 102. a BMS battery management system; 103. a direct current switch cabinet; 104. a transformer; 105. a rectifier; 106. feeder isolation cabinet.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, greater than, less than, exceeding, etc. are understood as excluding the essential numbers, and above, below, within, etc. are understood as including the essential numbers. If there is a description of first and second for the purpose of distinguishing technical features only, this is not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.
In the description of the present invention, unless otherwise specifically limited, terms such as set, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention by combining the specific contents of the technical solutions.
Referring to fig. 1-2, the present invention provides a technical solution: a flexible charging method for a tramcar comprises a photo-thermal power station 1, a tramcar platform 10, a box-type substation 11, a vehicle-mounted super capacitor 5, a vehicle-mounted lithium titanate battery 7 and a ground energy storage system 2, wherein the box-type substation 11 comprises an EMS energy management system 101, a BMS battery management system 102, a direct-current switch cabinet 103, a transformer 104, a rectifier 105 and a feeder isolation cabinet 106, the EMS energy management system 101 can comprehensively monitor the state of each accessed energy, the access proportion is determined by adopting a cluster communication and intelligent balance algorithm, the EMS energy management system 101 can adjust the charging power of the tramcar under different car conditions, and the service lives of the vehicle-mounted super capacitor 5 and the vehicle-mounted lithium titanate battery 7 are prolonged.
The BMS battery management system 102 adopts a bidirectional active equalization strategy, eliminates series loss, monitors the voltage and current of the vehicle-mounted super capacitor 5 and the vehicle-mounted lithium titanate battery 7, avoids overcharge, overdischarge, overcurrent, overtemperature and short circuit, detects the safety state of the battery in real time, accurately estimates the SOC/SOH, and ensures the efficient, reliable and safe operation of the energy storage system;
The box-type substation 11 can receive electric energy of 10kV of a national grid, can also receive electric energy of the photothermal power station 1 through the ground energy storage system 2, and can also receive electric energy transmitted by the photovoltaic power generation system 3 through the inverter 9, and a cable a12, a cable b13, a cable c14, a cable d15, a cable e16 and a cable f17 are arranged on the tramcar platform.
The energy storage charging equipment 8 internally comprises a bidirectional DC/DC and a contactor/diode, the bidirectional DC/DC and the contactor/diode are transmitted to the charging rail 4 through a cable b13, the contactor can receive signals to perform charging control, and when the tramcar enters the station, the electric energy of the charging rail 4 is drawn through a pantograph 6 at the top of the tramcar and is transmitted to the vehicle-mounted super capacitor 5 and the vehicle-mounted lithium titanate battery 7 to finish the charging when the tramcar enters the station.
The method is suitable for flexible charging of the tramcar, and is used for guaranteeing access of the tramcar by using various new energy sources, fluctuation of the new energy sources is stabilized, green energy sources are developed, the vehicle-mounted super capacitor 5 guarantees that the vehicle is full in 30 seconds after entering the station, dynamic balance of vehicle energy consumption and supply is achieved, whole-course uninterrupted operation of the vehicle is guaranteed, the vehicle-mounted lithium titanate battery 7 can supply power for vehicle compensation in an emergency state, emergency capacity of vehicle operation is improved, and the method is suitable for modern tramcar projects with sufficient illumination, super capacitor and lithium titanate battery power supply and various new energy sources input.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (6)
1. The flexible charging method for the tramcar is characterized by comprising a photo-thermal power station (1), a tramcar platform (10), a box-type substation (11), a vehicle-mounted super capacitor (5), a vehicle-mounted lithium titanate battery (7) and a ground energy storage system (2), wherein the box-type substation (11) comprises an EMS energy management system (101), a BMS battery management system (102), a direct current switch cabinet (103), a transformer (104), a rectifier (105) and a feeder isolation cabinet (106), the EMS energy management system (101) can comprehensively monitor the state of each accessed energy, a cluster communication and intelligent balance algorithm is adopted to determine each access proportion, the EMS energy management system (101) can also adjust the charging power of the tramcar under different car conditions, and the service lives of the vehicle-mounted super capacitor (5) and the vehicle-mounted lithium titanate battery (7) are prolonged.
2. The flexible charging method for the tramcar according to claim 1, characterized in that: the BMS battery management system (102) adopts a bidirectional active equalization strategy, eliminates series loss, monitors the voltage and current of the vehicle-mounted super capacitor (5) and the vehicle-mounted lithium titanate battery (7), avoids overcharge, overdischarge, overcurrent, overtemperature and short circuit, detects the safety state of the battery in real time, accurately estimates the SOC/SOH, and ensures efficient, reliable and safe operation of the energy storage system.
3. The flexible charging method for the tramcar according to claim 1, characterized in that: the feeder isolation cabinet (106) comprises a direct-current isolation switch and a contactor diode, and the feeder side can be isolated by on-off of the contactor to carry out maintenance operation.
4. The flexible charging method for the tramcar according to claim 1, characterized in that: the box-type substation (11) can receive 10kV electric energy of a national grid, can also receive electric energy of the photo-thermal power station (1) through the ground energy storage system (2), and can also receive electric energy of the photovoltaic power generation system (3) through the transmission of the inverter (9).
5. The flexible charging method for the tramcar according to claim 1, characterized in that: the energy storage charging equipment (8) internally comprises a bidirectional DC/DC and a contactor/diode, the bidirectional DC/DC and the contactor/diode are transmitted to a charging rail (4) through a cable b (13), the contactor can receive signals to perform charging control, and when the tramcar enters a station, electric energy of the charging rail (4) is drawn through a pantograph (6) at the top of the tramcar and is transmitted to a vehicle-mounted super capacitor (5) and a vehicle-mounted lithium titanate battery (7) to finish charging when the tramcar enters the station.
6. The flexible charging method for trams according to any of claims 1-5, characterized in that: the method is suitable for flexible charging of the tramcar, and is suitable for modern tramcar projects with sufficient illumination, super-capacitor + lithium titanate battery power supply and various new energy input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310029713.XA CN115891697A (en) | 2023-01-09 | 2023-01-09 | Flexible charging method for tramcar |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310029713.XA CN115891697A (en) | 2023-01-09 | 2023-01-09 | Flexible charging method for tramcar |
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| Publication Number | Publication Date |
|---|---|
| CN115891697A true CN115891697A (en) | 2023-04-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310029713.XA Pending CN115891697A (en) | 2023-01-09 | 2023-01-09 | Flexible charging method for tramcar |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117549784A (en) * | 2023-12-11 | 2024-02-13 | 通号（长沙）轨道交通控制技术有限公司 | Light storage and charging integrated charging system and energy management method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319832A (en) * | 2014-10-13 | 2015-01-28 | 株洲时代装备技术有限责任公司 | Ground complete charging device for super-capacitor energy storage type tramcar |
| CN106740174A (en) * | 2016-11-23 | 2017-05-31 | 浙江大学 | The electric vehicle wireless charging system and method for a kind of utilization electric car pantograph |
| CN108512293A (en) * | 2018-01-23 | 2018-09-07 | 上海展枭新能源科技有限公司 | A kind of energy storage type quick charge device and charging method |
| CN108988447A (en) * | 2018-07-02 | 2018-12-11 | 国电南瑞科技股份有限公司 | A kind of method of supplying power to and charging unit for super capacitor energy-storage type tramcar |
| CN110254283A (en) * | 2019-04-30 | 2019-09-20 | 北京北交新能科技有限公司 | Tramcar wireless control charging system |
| WO2021238068A1 (en) * | 2020-05-29 | 2021-12-02 | 宁波中车新能源科技有限公司 | Power supply system for energy storage intermittent vehicle, and power supply method |
-
2023
- 2023-01-09 CN CN202310029713.XA patent/CN115891697A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104319832A (en) * | 2014-10-13 | 2015-01-28 | 株洲时代装备技术有限责任公司 | Ground complete charging device for super-capacitor energy storage type tramcar |
| CN106740174A (en) * | 2016-11-23 | 2017-05-31 | 浙江大学 | The electric vehicle wireless charging system and method for a kind of utilization electric car pantograph |
| CN108512293A (en) * | 2018-01-23 | 2018-09-07 | 上海展枭新能源科技有限公司 | A kind of energy storage type quick charge device and charging method |
| CN108988447A (en) * | 2018-07-02 | 2018-12-11 | 国电南瑞科技股份有限公司 | A kind of method of supplying power to and charging unit for super capacitor energy-storage type tramcar |
| CN110254283A (en) * | 2019-04-30 | 2019-09-20 | 北京北交新能科技有限公司 | Tramcar wireless control charging system |
| WO2021238068A1 (en) * | 2020-05-29 | 2021-12-02 | 宁波中车新能源科技有限公司 | Power supply system for energy storage intermittent vehicle, and power supply method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117549784A (en) * | 2023-12-11 | 2024-02-13 | 通号（长沙）轨道交通控制技术有限公司 | Light storage and charging integrated charging system and energy management method thereof |
| CN117549784B (en) * | 2023-12-11 | 2024-06-25 | 通号（长沙）轨道交通控制技术有限公司 | Light storage and charging integrated charging system and energy management method thereof |
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