CN107733055B - Charging system for vehicle-mounted power battery of oil-electricity hybrid power locomotive - Google Patents
Charging system for vehicle-mounted power battery of oil-electricity hybrid power locomotive Download PDFInfo
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- CN107733055B CN107733055B CN201711220438.0A CN201711220438A CN107733055B CN 107733055 B CN107733055 B CN 107733055B CN 201711220438 A CN201711220438 A CN 201711220438A CN 107733055 B CN107733055 B CN 107733055B
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- power battery
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- power
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- 230000003137 locomotive effect Effects 0.000 title claims abstract description 62
- 239000003990 capacitor Substances 0.000 claims abstract description 13
- 238000009499 grossing Methods 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 230000005284 excitation Effects 0.000 claims abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002860 competitive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
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- 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
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
- H02J7/1415—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle with a generator driven by a prime mover other than the motor of a vehicle
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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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
- B60L53/24—Using the vehicle's propulsion converter for charging
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- H02J7/022—
-
- 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
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
- H02J7/04—Regulation of charging current or voltage
-
- 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
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
- H02J7/1469—Regulation of the charging current or voltage otherwise than by variation of field
- H02J7/1492—Regulation of the charging current or voltage otherwise than by variation of field by means of controlling devices between the generator output and the battery
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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
- B60L2200/00—Type of vehicles
- B60L2200/26—Rail vehicles
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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
-
- 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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- 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
- Y02T10/72—Electric energy management in electromobility
-
- 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
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Abstract
The invention discloses a charging system for a vehicle-mounted power battery of an oil-electricity hybrid locomotive, which is characterized in that an AC/DC converter and a supporting capacitor rectify and filter three-phase alternating current or ground alternating current generated by a main generator of a diesel generator set into direct current, a positive circuit of the direct current is connected with the positive electrode of the power battery after passing through a high-voltage chopper electronic switch and a smoothing reactor, a negative circuit of the direct current is connected with the negative electrode of the power battery, a locomotive microcomputer controls an excitation driving module of the main generator according to information of a power battery management system so as to control the output power of the main generator, and a DCU controller controls the high-voltage chopper electronic switch according to a control instruction sent by the locomotive microcomputer so as to control the optimal charging current of the power battery. The invention has the beneficial effects that: the diesel generator set and the ground power supply can charge the power battery pack quickly; the ground only needs to be provided with a small volume A voltage conversion device is inexpensive and highly reliable.
Description
Technical Field
The invention relates to a charging system for a vehicle-mounted power battery of an oil-electricity hybrid power locomotive, belonging to the technical field of rail transit.
Background
The prior art for charging a power battery by a domestic and foreign oil-electricity hybrid locomotive is shown in fig. 1: the power battery is directly connected in parallel with the middle direct current link of the traction converter of the main transmission system of the locomotive, and the ground power source is adopted by the ground charger to charge the power battery between the positive electrode and the negative electrode of the power battery. This solution has several disadvantages:
1. the three-phase alternating current generated by the diesel generator set is rectified into direct current through the AC/DC converter of the traction converter and then is directly connected with the power battery in parallel, when the charging current of the diesel generator set to the power battery is controlled, the charging current of the main generator is only regulated, but the actual control is very difficult, and the fluctuation of the rotating speed of the diesel engine, the power of the diesel engine and the charging current of the power battery is very easy to cause;
2. when the braking energy of the locomotive is recovered, the charging current of the power battery during the braking of the locomotive can be controlled only by a DC/AC electronic switch in the traction converter, the current fluctuation is large, and the control is unstable;
3. the power battery of the locomotive is 300-1500 kW.h, the nominal capacity is 200-1000 Ah, the nominal voltage is 500-1500V, the locomotive operation unit hopes that the power battery can be filled up rapidly to improve the locomotive operation efficiency, but the ground charger has huge volume and high cost if the quick charge is required, so that the requirement of low-current slow charge can only be met if the ground charger is adopted to charge the locomotive power battery.
Disclosure of Invention
The invention aims at: in order to solve the problems, a charging system for a vehicle-mounted power battery of an oil-electricity hybrid power locomotive is provided.
The technical scheme adopted by the invention is as follows:
the charging system comprises a locomotive microcomputer, a traction converter and a locomotive power battery system, wherein the traction converter comprises an AC/DC converter device, a supporting capacitor, a DCU controller and a high-voltage chopping electronic switch, the locomotive power battery system comprises a power battery and a power battery management system, the traction converter further comprises a smoothing reactor, the AC/DC converter device and the supporting capacitor rectify and filter three-phase alternating current or ground alternating current generated by a main generator of a diesel generator set into direct current, an anode circuit of the direct current is connected with an anode of the power battery after passing through the high-voltage chopping electronic switch and the smoothing reactor, a cathode circuit of the direct current is connected with a cathode of the power battery, the locomotive microcomputer controls an excitation driving module of the main generator according to information of the power battery management system so as to control output power of the main generator, and the DCU controller controls the high-voltage chopping electronic switch according to control instructions sent by the locomotive microcomputer so as to control optimal charging current of the power battery.
Preferably, the alternating current generated by the main generator and the three-phase alternating current obtained by the ground power supply through the voltage conversion device are subjected to interlocking switching through the change-over switches 1 and 2, and then the three-phase alternating current is rectified into direct current through the AC/DC converter and the supporting capacitor.
Preferably, when the alternating current generated by the main generator charges the power battery, the locomotive microcomputer controls the power output by the diesel generator set by controlling the excitation driving module of the main generator according to the information provided by the power battery management system, and on the other hand, the locomotive microcomputer sends a control command to the DCU controller according to the charging characteristic of the power battery and the locomotive operating characteristics, and the DCU controller controls the high-voltage chopper electronic switch to control the optimal charging current of the power battery.
Preferably, a switch 3 is arranged on the circuit between the smoothing reactor and the power battery.
Preferably, when the ground alternating current charges the power battery, the locomotive microcomputer sends a control command to the DCU controller according to the information provided by the power battery management system, and the DCU controller controls the high-voltage chopper electronic switch to control the optimal charging current of the power battery.
Preferably, the traction converter further comprises a DC/AC electronic switch, the two poles of the direct-current end of the DC/AC electronic switch are correspondingly connected with the two poles of the supporting capacitor, and the alternating-current end of the DC/AC electronic switch is connected with the traction motor. The preferred mode can achieve rapid charging of the power battery by recovered braking energy during dynamic braking of the locomotive. When the locomotive is in dynamic braking, alternating current generated by the traction motor is converted into direct current through the DC/AC electronic switch and is added to the middle direct current link of the traction converter, and the locomotive microcomputer sends a command of a dynamic braking force value to the DCU controller according to information provided by the power battery management system in combination with locomotive braking force requirements, and the DCU controller controls the high-voltage chopper electronic switch to control the optimal charging current of the power battery.
The key improvement point of the invention is that the high-voltage chopping electronic switch of the chopper circuit is controlled in the traction converter to be connected with the power battery through the smoothing reactor (the high-voltage chopping electronic switch is connected with the chopping resistor to form a high-voltage protection circuit of the intermediate direct current link of the main transmission circuit of the locomotive, in the invention, the chopping resistor is eliminated, the smoothing reactor is used for replacing, and meanwhile, the high-voltage chopping electronic switch is reserved. After the technical means is adopted, the locomotive diesel generator set and the ground power supply can charge the power battery through the charging system, the ground power supply can rapidly charge the power battery pack, and charging current is completely controlled according to the characteristics of the power battery. And the ground only needs to be provided with a voltage conversion device to convert the ground 10kV or 380V three-phase alternating current power supply into a three-phase alternating current power supply matched with the charging voltage of the locomotive power battery, and the voltage conversion device has the advantages of small volume, low price and high reliability, and has very competitive power compared with the mode that the ground charger has to be made to be huge and expensive in order to realize quick charging in the prior art.
Drawings
Fig. 1 is a schematic block diagram of a prior art charging technique.
Fig. 2 is a functional block diagram of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
Examples:
as shown in fig. 2, the charging system for the vehicle-mounted power battery of the oil-electricity hybrid locomotive comprises a locomotive microcomputer, a traction converter and a locomotive power battery system, wherein the traction converter comprises an AC/DC converter device, a supporting capacitor, a DCU controller and a high-voltage chopper electronic switch, the locomotive power battery system comprises a power battery and a power battery management system, the traction converter further comprises a smoothing reactor, the AC/DC converter device and the supporting capacitor rectify and filter three-phase alternating current or ground alternating current generated by a main generator of a diesel generator set into direct current, an anode circuit of the direct current is connected with an anode of the power battery after passing through the high-voltage chopper electronic switch and the smoothing reactor, a cathode circuit of the direct current is connected with a cathode of the power battery, the locomotive microcomputer controls an excitation driving module of the main generator according to information of the power battery management system so as to control output power of the main generator, and the DCU controller controls the high-voltage chopper electronic switch according to control instructions sent by the locomotive microcomputer so as to control optimal charging current of the power battery.
The alternating current generated by the main generator and the three-phase alternating current obtained by the ground power supply through the voltage conversion device are subjected to interlocking switching through the change-over switches 1 and 2, and then the three-phase alternating current is rectified into direct current through the AC/DC converter and the supporting capacitor.
When the alternating current generated by the main generator charges the power battery: the locomotive microcomputer controls the exciting current of the exciting driving module of the main generator to control the power output by the diesel generator set according to the maximum allowable charging current value of the power battery provided by the power battery management system on one hand, and sends a control command to the DCU controller according to the charging characteristic of the power battery and the locomotive application characteristic on the other hand, and the DCU controller controls the high-voltage chopper electronic switch to charge the power battery according to the charging characteristic of the power battery by using the optimal charging current.
And a switch 3 is arranged on a circuit between the smoothing reactor and the power battery.
When charged by a ground power supply: the ground 10kV or 380V three-phase alternating current power supply is changed into a three-phase alternating current power supply matched with the charging voltage of the power battery through a voltage conversion device arranged on the ground, the three-phase alternating current power supply is input into an AC/DC converter, a locomotive microcomputer collects information of a power battery management system through a network system, and sends out a maximum charging current instruction to a DCU controller according to the state of the power battery so as to control a high-voltage chopper electronic switch to achieve the aim of controlling the rapid charging of the power battery.
The traction converter further comprises a DC/AC electronic switch, the two poles of the direct-current end of the DC/AC electronic switch are correspondingly connected with the two poles of the supporting capacitor, and the alternating-current end of the DC/AC electronic switch is connected with the traction motor. When the locomotive is in dynamic braking, alternating current generated by the traction motor is converted into direct current through the DC/AC electronic switch and is added to the middle direct current link of the traction converter, and the locomotive microcomputer sends a command of a dynamic braking force value to the DCU controller according to information provided by the power battery management system in combination with locomotive braking force requirements, and the DCU controller controls the high-voltage chopper electronic switch to control the optimal charging current of the power battery.
Claims (7)
1. The utility model provides a charging system for on-vehicle power battery of oil-electricity hybrid locomotive, includes locomotive microcomputer, traction current transformer and locomotive power battery system triplex, traction current transformer includes AC/DC converter, supporting capacitor, DCU controller and high-voltage chopper electronic switch, locomotive power battery system includes power battery and power battery management system, its characterized in that: the traction converter further comprises a smoothing reactor, the AC/DC converter and the supporting capacitor rectify and filter three-phase alternating current or ground alternating current generated by a main generator of the diesel generator set into direct current, a positive circuit of the direct current is connected with the positive electrode of the power battery after passing through the high-voltage chopping electronic switch and the smoothing reactor, a negative circuit of the direct current is connected with the negative electrode of the power battery, the locomotive microcomputer controls an excitation driving module of the main generator according to information of the power battery management system so as to control output power of the main generator, and the DCU controller controls the high-voltage chopping electronic switch according to a control instruction sent by the locomotive microcomputer so as to control optimal charging current of the power battery.
2. A charging system for an on-board power cell of an oil-electric hybrid locomotive according to claim 1, wherein: the alternating current generated by the main generator and the three-phase alternating current obtained by the ground power supply through the voltage conversion device are subjected to interlocking switching through the change-over switches 1 and 2, and then the three-phase alternating current is rectified into direct current through the AC/DC converter and the supporting capacitor.
3. A charging system for an on-board power cell of an oil-electric hybrid locomotive according to claim 1, wherein: when the alternating current generated by the main generator charges the power battery, the locomotive microcomputer controls the power output by the diesel generator set by controlling the excitation driving module of the main generator according to the information provided by the power battery management system, and on the other hand, the locomotive microcomputer sends a control command to the DCU controller according to the charging characteristic of the power battery and the locomotive application characteristic, and the DCU controller controls the high-voltage chopper electronic switch to control the optimal charging current of the power battery.
4. A charging system for an on-board power battery of an oil-electric hybrid locomotive according to claim 1, 2 or 3, characterized in that: and a switch 3 is arranged on a circuit between the smoothing reactor and the power battery.
5. A charging system for an on-board power cell of an oil-electric hybrid locomotive according to claim 1, wherein: when the power battery is charged by the ground alternating current, the locomotive microcomputer sends a control command to the DCU controller according to the information provided by the power battery management system, and the DCU controller controls the high-voltage chopper electronic switch to control the optimal charging current of the power battery.
6. A charging system for an on-board power cell of an oil-electric hybrid locomotive according to claim 1, wherein: the traction converter further comprises a DC/AC electronic switch, the two poles of the direct-current end of the DC/AC electronic switch are correspondingly connected with the two poles of the supporting capacitor, and the alternating-current end of the DC/AC electronic switch is connected with the traction motor.
7. A charging system for an on-board power cell of an oil-electric hybrid locomotive as claimed in claim 6, wherein: when the locomotive is in dynamic braking, alternating current generated by the traction motor is converted into direct current through the DC/AC electronic switch and is added to the middle direct current link of the traction converter, and the locomotive microcomputer sends a command of a dynamic braking force value to the DCU controller according to information provided by the power battery management system in combination with locomotive braking force requirements, and the DCU controller controls the high-voltage chopper electronic switch to control the optimal charging current of the power battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711220438.0A CN107733055B (en) | 2017-11-29 | 2017-11-29 | Charging system for vehicle-mounted power battery of oil-electricity hybrid power locomotive |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711220438.0A CN107733055B (en) | 2017-11-29 | 2017-11-29 | Charging system for vehicle-mounted power battery of oil-electricity hybrid power locomotive |
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| Publication Number | Publication Date |
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| CN107733055A CN107733055A (en) | 2018-02-23 |
| CN107733055B true CN107733055B (en) | 2023-10-10 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109435978A (en) * | 2018-11-12 | 2019-03-08 | 中车资阳机车有限公司 | A kind of electric hybrid vehicle energy management control system and control method |
| CN109829259B (en) * | 2019-03-29 | 2023-01-24 | 中车资阳机车有限公司 | Hybrid power train operation simulation calculation method |
| CN110254294B (en) * | 2019-07-05 | 2022-06-24 | 中车资阳机车有限公司 | Power battery grouping topological structure of oil-electricity hybrid power locomotive |
| DE102019007347B4 (en) * | 2019-10-21 | 2021-12-16 | Vitesco Technologies GmbH | Vehicle electrical system |
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2017
- 2017-11-29 CN CN201711220438.0A patent/CN107733055B/en active Active
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| CN102935812A (en) * | 2012-09-18 | 2013-02-20 | 北京理工大学 | Motor driving-charging integrated device with 220 volt alternating current (VAC)/380VAC charging function |
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| CN206487580U (en) * | 2016-08-04 | 2017-09-12 | 中车戚墅堰机车有限公司 | Exchange diesel engine of diesel locomotive variable frequency starting circuit is realized based on four quadrant convertor |
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| CN107733055A (en) | 2018-02-23 |
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