CN110228372A - A kind of third rail and lithium battery hybrid power supply circuit - Google Patents
A kind of third rail and lithium battery hybrid power supply circuit Download PDFInfo
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- CN110228372A CN110228372A CN201910524925.9A CN201910524925A CN110228372A CN 110228372 A CN110228372 A CN 110228372A CN 201910524925 A CN201910524925 A CN 201910524925A CN 110228372 A CN110228372 A CN 110228372A
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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
- B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
- B60L5/38—Current collectors for power supply lines of electrically-propelled vehicles for collecting current from conductor rails
- B60L5/39—Current collectors for power supply lines of electrically-propelled vehicles for collecting current from conductor rails from third rail
-
- 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
-
- 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
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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)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
A kind of third rail and lithium battery hybrid power supply circuit, third rail without network pressure in emergency circumstances, electric energy needed for emergency vehicle is drawn draws lithium battery power supply by emergency；Also, third rail and lithium battery power supply are converted to be controlled by switch box.Technical solution of the present invention realizes city rail vehicle lithium battery emergency traction power supply, plurality of advantages based on lithium battery, the emergency traction energy requirements that heavy-current discharge for a long time can be met, solve special non-Electric region (in such as section, knife and fork crossing) traction, the traction of emergency operating condition, complicated ramp operating condition traction problem.The hybrid power supply circuit safety is higher, and in supply network failure, vehicle can voluntarily draw to neighbouring station and unload passenger and Hui Ku, rescues without towing vehicle, it can be achieved that vehicle self-rescue function.
Description
Technical field
The present invention relates to city rail vehicle power supply technique field more particularly to a kind of third rails and lithium battery hybrid power supply electricity
Road.
Background technique
Currently, city rail vehicle is mainly powered by contact net or the single mode of third rail, which has maturation
Reliably, the features such as mounting arrangement facilitates, but the electric network fault occurred in current car operation, special non-Electric region can not be solved
The vehicle traction problems of (library, intersection etc. are moved in section).Current existing emergency traction protocols are only applicable in short distance flat line
Road is unable to satisfy the emergency traction requirements of ramp and complex working condition, and has many restrictions requirement to vehicle.
In a kind of emergency traction protocols of the prior art, using the scheme of third rail and alkaline storage battery hybrid power supply,
The program is by way of increasing vehicle battery capacity, and auxiliary vehicle is applicable in non-Electric region by non-Electric region, the usual program
The shorter level tangent track of distance.And since the program has selected alkaline storage battery as power source, master the shortcomings that alkaline storage battery
It to include that energy density is low, power density is low, cycle life is short, bulking value is larger, so railcar emergency can not be applicable in
The long distance running of traction, the requirement frequently used.
In another emergency traction protocols of the prior art, using the scheme of surface power supply and super capacitor hybrid power supply,
There are three types of charging modes for the program: (1) vehicle utilizes terminus and the energy storage of intermediate station stopping for charging, the charging of (2) terminus, (3)
Surface power supply is completely used, and is charged to super capacitor；Power supply mode was intersection only with super capacitor power supply (off-line
Operation), other operating conditions are run using surface power supply mode.Using this emergency traction protocols, more charging station, base are needed to have
It builds at high cost；And frequent charge is needed, the super capacitor service life is short, frequently replaces, at high cost；Additionally, due to larger capacity need to be configured,
Cause volume weight big；And due to the technical restriction of super capacitor itself, current super capacitor is not suitable for railcar progress
Prolonged heavy-current discharge, can not draw over long distances, be only loaded on tramcar at present.
Based on this, the prior art still has much room for improvement.
Summary of the invention
In order to solve the above technical problems, the embodiment of the present invention proposes a kind of third rail and lithium battery hybrid power supply circuit,
Third-rail feeding mode can be used for the power supply of the vehicle of normal operation and in the case where third-rail feeding interrupts, led to
Crossing the energy stored by lithium battery drives vehicle low speed mobile, makes vehicle from traction to required station or carries out moving library operation.
A kind of third rail and lithium battery hybrid power supply circuit disclosed in the embodiment of the present invention comprising:
Third rail without network pressure in emergency circumstances, emergency vehicle draw needed for electric energy by emergency draw lithium battery power supply；
Also,
Third rail and lithium battery power supply are converted to be controlled by switch box.
Further, in third rail without network pressure in emergency circumstances, vehicle assisted system emergency load is by alkaline storage battery
Power supply.
Further, in the switch box, the K1 in powering mode switch is for connecting three rail positions；Powering mode is opened
The K2 in the Central Shanxi Plain is for connecting lithium battery position.
Further, the switch box is arranged on motor-car.
Further, behind the K2 connection lithium battery position in powering mode switch, after lithium battery box is boosted by current transformer, lead to
It crosses auxiliary disconnecting switch case to be connected on vehicle bus, power for pulling equipment.
Further, the lithium battery is arranged on trailer, and the current transformer and auxiliary disconnecting switch case setting exist
On trailer.
Further, include: that electric current flows into high-voltage electrical box and filter reactor for pulling equipment power supply, be then input to
Traction invertor, electric current needed for exporting traction electric machine after over commutation, provides kinetic energy for traction electric machine.
Further, behind the K2 connection lithium battery position in powering mode switch, braking resistor blower contactor is disconnected, braking
Resistance box exits work.
Further, it stops in vehicle or inert stage is lithium battery charging.
Further, third rail electric current accesses current transformer through auxiliary disconnecting switch case, fills after rectified transformation for lithium battery
Electricity.
By adopting the above technical scheme, the present invention at least has the following beneficial effects:
Technical solution of the present invention realizes city rail vehicle lithium battery emergency traction power supply, many excellent based on lithium battery
Point, can meet for a long time heavy-current discharge emergency traction energy requirements, solve special non-Electric region (as in section, knife and fork crossing
Deng) traction, the traction of emergency operating condition, complicated ramp operating condition traction problem.The hybrid power supply circuit safety is higher, in power supply network
When network failure, vehicle can voluntarily draw to neighbouring station and unload passenger and Hui Ku, without towing vehicle rescue, it can be achieved that vehicle from
Rescue function.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
The third rail and the third-rail feeding energy flow diagram in lithium battery hybrid power supply that Fig. 1 is one embodiment of the invention；
The third rail and the lithium battery power supply energy flow diagram in lithium battery hybrid power supply that Fig. 2 is one embodiment of the invention；
The third rail and the lithium battery rechargeable energy flow graph in lithium battery hybrid power supply that Fig. 3 is one embodiment of the invention；
Fig. 4 is the third rail and lithium battery hybrid power supply circuit diagram of one embodiment of the invention；
Fig. 5 is the third rail and lithium battery hybrid power supply circuit diagram of one embodiment of the invention；
Fig. 6 is the third rail and lithium battery hybrid power supply circuit diagram of one embodiment of the invention；
Fig. 7 is the third rail and lithium battery hybrid power supply circuit diagram of one embodiment of the invention.
Wherein:
IVS: auxiliary disconnecting switch case, IVHB: auxiliary high-speed circuit breaker, SIV: subordinate inverter, BCG: battery charging
Device case, BATB: accumulator box, MS: main disconnecting switch case, CS: switch box, MF: main fuse case, HB: high-speed circuit breaker
Case, VVVF: traction invertor, BT: traction lithium battery box, DC/DC:DC/DC current transformer, BHB: bus box of the circuit breaker, BF: bus
Fuse box, CCD: pantagraph current collector, ARR: arrester, HV: high-voltage electrical box, FL: filter reactor, IM: traction electric machine, BR: system
Dynamic resistance box, BFANC: braking resistor blower contactor.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
The embodiment of the present invention is further described in attached drawing.
It should be noted that all statements for using " first " and " second " are for differentiation two in the embodiment of the present invention
The non-equal entity of a same names or non-equal parameter, it is seen that " first " " second " only for the convenience of statement, does not answer
It is interpreted as the restriction to the embodiment of the present invention, subsequent embodiment no longer illustrates this one by one.
As shown in Figures 1 to 6, the embodiment of the invention discloses a kind of third rails and lithium battery hybrid power supply circuit,
In emergency circumstances without network pressure, electric energy needed for emergency vehicle is drawn draws lithium battery power supply by emergency to three rails；Also, third rail with
Lithium battery power supply conversion is controlled by switch box.
Technical solution of the present invention uses lithium battery (preferably lithium titanate battery) and is used as power battery, by two-way
DC/DC current transformer realizes that the energy stores of lithium battery and output are converted, come towing vehicle operation of meeting an urgent need.Lithium titanate battery has energy
The advantage that metric density is high, power density is big, cycle life, cryogenic property, in terms of all show superior, can satisfy
The emergency of heavy-current discharge draws energy requirements for a long time.
The emergency traction course of work of lithium battery power supply can be with are as follows: vehicle is static on straight track, and driver passes through activation
Powering mode switch on console, makes trailer system be converted to lithium battery power supply mode by third-rail feeding mode, allows vehicle
It is voluntarily drawn in the case where no high input voltage, to realize that vehicle moves library transport function.Lithium battery is become by increasing apparatus DC/DC
Device is flowed to provide voltage needed for traction power source, lithium battery emergency only guarantees the basic trailer system loaded work piece of vehicle when drawing,
Lithium battery power supply mode is mainly used in section and ramp non-Electric region.
Hybrid power supply circuit disclosed in the embodiment of the present invention mainly realizes the emergency traction function of vehicle, completes two kinds of confessions
The safety conversion of power mode, rationally controls electric energy transmission.When power grid fault-free, when vehicle runs on main track, supplied using third rail
Power mode, electric energy are transferred on traction invertor by third rail, are rectified into traction electric machine power supply by traction invertor, another
Part electric energy is stored in lithium battery after passing through DC/DC current transformer transformation, and power flow is as shown in Figure 1.
In hybrid power supply circuit disclosed in the embodiment of the present invention, no high pressure or pass through special section when vehicle breaks down
When domain, by activating lithium battery powering mode, lithium battery becomes electrical source of power, passes through the boosting of DC/DC current transformer and reverse transfer
Electric energy is powered to traction invertor after traction invertor rectification for traction electric machine, driving vehicle low speed operation, current direction is as schemed
Shown in 2.
In hybrid power supply circuit disclosed in the embodiment of the present invention, after the completion of emergency traction, lithium battery charge state SOC
Lower, i.e., remaining capacity is less, and power supply network needs to supplement energy (for example stop or coasting stage) to battery after restoring electricity, this
When energy flow diagram it is as shown in Figure 3.
As shown in Figure 4-Figure 6, hybrid power supply circuit disclosed in one embodiment of the invention, when starting third-rail feeding,
It is needed first by powering mode switch rotary to three rail positions, electric current enters M/M1 vehicle bus box of the circuit breaker by pantagraph current collector (CCD)
(BHB), and then three rail circuits of switch box (CS) are connected to, as shown in Figure 5.At this point, the switch box (CS) in Fig. 4
K1 contact closure, electric current flows into high-voltage electrical box (HV) and filter reactor (FL), is input to traction invertor (VVVF), warp
Electric current needed for exporting traction electric machine after over commutation provides kinetic energy, traction electric machine (IM) starting, driving vehicle fortune for traction electric machine
Row.Braking resistor box (BR) is connected to traction invertor (VVVF) for feedback regeneration braking energy.
When starting lithium battery emergency service, needed first by powering mode switch rotary to battery position, positioned at the lithium electricity of T vehicle
Pond case (BT) boosts to 750V voltage by DC/DC current transformer (DC/DC), and by assisting disconnecting switch case (IVS) to be transferred to
On vehicle bus, power for pulling equipment.Then, as shown in figure 4, lithium battery, which draws bus, is transferred to leading for M/M1 vehicle from T vehicle
Draw major loop, and access the battery circuit of the switch box (CS) of M/M1 vehicle, K2 contact closure, electric current flows into high-voltage electrical box
(HV) and filter reactor (FL) it, is input to traction invertor (VVVF), electric current needed for exporting traction electric machine after over commutation is
Traction electric machine provides kinetic energy, traction electric machine (IM) starting, driving vehicle operation.Under lithium battery emergency service operating condition, braking resistor
Case (BR) exits work, and braking resistor blower contactor (BFANC) disconnects.
When lithium battery charging, third rail electric current is through assisting disconnecting switch case (IVS) to access to DC/DC current transformer (DC/
DC), charge after rectifier transformer for lithium battery.
In some embodiments of the invention, urgent traction is arranged under T vehicle vehicle with lithium battery group, and battery pack is voltage rating
The lithium titanate battery of DC607V.Third rail without network pressure in emergency circumstances, vehicle assisted system emergency load is by being installed on Tc
Electric energy needed for two groups of alkaline storage battery groups of vehicle are powered, and emergency vehicle is drawn is supplied by the emergency traction lithium battery for being installed on T vehicle
Electricity.The conversion of two kinds of operating conditions passes through the DC/DC unsteady flow of T vehicle by the switch box control under each motor-car vehicle, the conversion of voltage
Device is realized.
Lithium battery power supply circuit is by change-over switch and emergency traction mode switch CS activation, positioned at the DC/DC unsteady flow of T vehicle
Lithium battery voltage is boosted and draws required voltage for traction invertor VVVF by device, and is sent by train bus to each traction invertor
VVVF。
In hybrid power supply circuit disclosed in the embodiment of the present invention, in addition to conventional third rail trailer system equipment, third rail
Configuration switch box, auxiliary disconnecting switch case, DC/DC current transformer, traction lithium battery box, height are also needed with lithium battery hybrid circuit
Press coupling box (one), powering mode switch, control breaker, workshop high-tension connector, high pressure coupling box (two).
Each composition component function is as follows:
(1) switch box
Change-over switch box function is that major loop bus is switched to lithium battery power supply from third-rail feeding.Work as third-rail feeding
When normal, switch is placed in " three rails " position in switch box, and 750V bus is connected to conversion through bus fuse, bus breaker
Switch-box is followed by other high-voltage electrical boxes, finally powers to traction electric machine.
When third rail is without high pressure, switch gets to " battery " position in switch box, and lithium battery gives traction system by bus
System power supply.
(2) disconnecting switch case is assisted
Assist the work of disconnecting switch box function connection between disjunction 750V high voltage bus and DC/DC current transformer case
With.When vehicle operates normally, disconnecting switch case is assisted to provide the positive negative wire in the circuit 750V for DC/DC current transformer case, DC/DC becomes
It flows device and the voltage is down to lithium battery charging DC voltage.
When equipment needs to overhaul, auxiliary disconnecting switch is placed in " isolation " position, the dimension such as inspection and pressure resistance is carried out to equipment
Shield test.After completing maintenance and test job, switch is restored to normal " RUN " position.
(3) DC/DC current transformer case
The effect of DC/DC current transformer case is divided to two kinds of operating conditions:
When nominal situation, DC/DC current transformer case by the voltage transformation obtained from 750V bus to lithium battery charge electricity consumption
Pressure provides electric energy for lithium battery charging.
Third rail fault condition or pass through special non-Electric region when, lithium battery voltage is boosted to 750V by DC/DC current transformer case
Afterwards, the traction invertor for passing to each motor-car provides energy needed for emergency vehicle is drawn.
(4) lithium battery box is drawn
The effect for drawing lithium battery box is to provide DC voltage by traction lithium battery under third rail electroless state, via
DC/DC current transformer case transformation is 750V, and then provides emergency power for traction energy for motor-car traction invertor.
(5) high pressure coupling box (one)
The effect of high pressure coupling box (one) be breakout is provided on 750V bus, and for auxiliary disconnecting switch case input terminal
Wiring point is provided.
(6) workshop high-tension connector
Workshop high-tension connector function is to connect the high voltage bus in two section compartments, forms complete auxiliary power supply bus
Route.It is all the mounting means of connector using both-end, both ends all connect on socket when normal operation；It will even when vehicle solution is compiled
Plug and line collection, fast and easy solution are compiled.
(7) high pressure coupling box (two)
High pressure coupling box (two) function is to provide breakout for lithium battery power supply bus, and switch box is connected to auxiliary
On main circuit power supply.
Embodiment
Scheme introduction is now carried out so that three dynamic three drag marshalling city rail vehicle as an example, make-up type is-Tc+M+M-T+M+Tc-.When
When vehicle is in lithium battery emergency traction, change-over switch is arranged power needed for permutation vehicle provides train traction as three section motor-cars
In M M1 on tri- section motor-car of M, lithium battery box BT, DC/DC current transformer and auxiliary disconnecting switch case IVS are arranged on trailer T, phase
It is connected between mutually by high voltage bus, hybrid power supply circuit topological structure is as shown in Figure 7.
The battery emergency traction condition of city rail vehicle storage is as follows:
Condition one: (1) 20 ‰ gradient 325m (AW3)+straight road 500m (AW3)；
Condition two :+3.5 ‰ gradient 150m (AW3) of (2) 24.2 ‰ gradient 200m (AW3)+straight road 150m
In view of one state of condition is more difficult than condition two, therefore an entire lithium battery emergency traction protocols according to condition design,
Condition one can meet completely emergency traction needs.
In addition to configuring conventional third rail trailer system equipment, lithium battery pulliung circuit also needs to configure following equipment the vehicle,
See Table 1 for details.
1 lithium battery power supply device configuration of table
The design key of main circuit is the control mode of high-tension circuit conversion, and two kinds of powering modes pass through switch box CS
Carry out conversion and control.
When third-rail feeding, 750V high voltage bus is exported by bus box of the circuit breaker BHB, passes through main disconnecting switch case
Traction current after MS, switch box CS, high-voltage electrical box HV, filter reactor FL, traction invertor VVVF output rectification,
Kinetic energy is provided for traction electric machine, driving vehicle operation, circuit is as shown in figure 5, lithium battery traction bus and third rail 750V bus
Parallel connection accesses to switch box CS.
When lithium battery emergency service, vehicle obtains lithium battery energy by switch box CS, as shown in fig. 6, lithium is electric
Pond traction bus will be located at M M1 the switch box CS of tri- section motor-car of M and the DC/DC current transformer of T vehicle be commonly connected to 750V
On circuit, by the lithium battery box BT of T vehicle and DC/DC current transformer output driving electric energy, by bus pass to M M1 tri- section of M
On motor-car.
For the main circuit design of lithium battery power supply as shown in figure 4, when emergency traction, lithium battery box passes through DC/DC current transformer
Inversion boosting is powered to 750V voltage, and by assisting disconnecting switch case IVS to be transferred on bus for pulling equipment.When lithium electricity
When pond is charged, electric current accesses to DC/DC current transformer by bus auxiliary disconnecting switch case IVS, is lithium electricity after rectifier transformer
Pond charging.
In conclusion hybrid power supply circuit disclosed in the embodiment of the present invention, solves city railway vehicle and powers off in third rail
Or by the way that in the case where special non-Electric region, emergency towing vehicle moves the conjunction of library and power supply mode by long range ramp, safety
The technical issues of reason control.Solve that energy-storage travelling wave tube cycle life is short, energy density is low, volume weight is big, power density is low simultaneously
The problems such as, rationally control energy-storage travelling wave tube energy stores and output.
It is important to note that the various components or step in above-mentioned each embodiment can intersect, replace,
Increase, delete, therefore, these reasonable permutation and combination transformation should also be as belonging to the scope of protection of the present invention, and should not be by this
The protection scope of invention is confined on the embodiment.
It is exemplary embodiment disclosed by the invention above, the disclosed sequence of the embodiments of the present invention is just to retouching
It states, does not represent the advantages or disadvantages of the embodiments.It should be noted that the discussion of any of the above embodiment is exemplary only, it is not intended that
Imply that range disclosed by the embodiments of the present invention (including claim) is limited to these examples, what is limited without departing substantially from claim
Under the premise of range, it may be many modifications and modify.According to the claim to a method of open embodiment described herein
Function, step and/or movement are not required to the execution of any particular order.In addition, although element disclosed by the embodiments of the present invention can be with
It is described or is required in the form of individual, but be unless explicitly limited odd number, it is understood that be multiple.
It should be understood by those ordinary skilled in the art that: the discussion of any of the above embodiment is exemplary only, not
It is intended to imply that range disclosed by the embodiments of the present invention (including claim) is limited to these examples；In the think of of the embodiment of the present invention
Under road, it can also be combined between the technical characteristic in above embodiments or different embodiments, and exist as described above
Many other variations of the different aspect of the embodiment of the present invention, for simplicity, they are not provided in details.Therefore, all at this
Within the spirit and principle of inventive embodiments, any omission, modification, equivalent replacement, improvement for being made etc. should all be included in this hair
Within the protection scope of bright embodiment.
Claims (10)
1. a kind of third rail and lithium battery hybrid power supply circuit characterized by comprising
Third rail without network pressure in emergency circumstances, emergency vehicle draw needed for electric energy by emergency draw lithium battery power supply；Also,
Third rail and lithium battery power supply are converted to be controlled by switch box.
2. circuit according to claim 1, which is characterized in that third rail without network pressure in emergency circumstances, vehicle auxiliary
System emergency load is powered by alkaline storage battery.
3. circuit according to claim 1, which is characterized in that lithium battery draws bus access institute in parallel with third rail bus
It states in switch box, in the switch box, the K1 in powering mode switch is for connecting three rail positions；Powering mode switch
In K2 for connecting lithium battery position.
4. circuit according to claim 3, which is characterized in that the switch box is arranged on motor-car.
5. circuit according to claim 3, which is characterized in that behind the K2 connection lithium battery position in powering mode switch, lithium
After battery case is boosted by current transformer, by assisting disconnecting switch case to be connected on vehicle bus, power for pulling equipment.
6. circuit according to claim 5, which is characterized in that the lithium battery is arranged on trailer, the current transformer and
The auxiliary disconnecting switch case is arranged on trailer.
7. circuit according to claim 5, which is characterized in that powering for pulling equipment includes: that electric current flows into High-Voltage Electrical Appliances
Case and filter reactor, are then input to traction invertor, electric current needed for exporting traction electric machine after over commutation, are traction electric machine
Kinetic energy is provided.
8. circuit according to claim 4, which is characterized in that behind the K2 connection lithium battery position in powering mode switch, system
Dynamic resistance blower contactor disconnects, and braking resistor box exits work.
9. circuit according to claim 1, which is characterized in that stop in vehicle or inert stage is lithium battery charging.
10. circuit according to claim 1, which is characterized in that third rail electric current accesses unsteady flow through auxiliary disconnecting switch case
Device is charged for lithium battery after rectified transformation.
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| CN112622631A (en) * | 2019-10-09 | 2021-04-09 | 株洲中车时代电气股份有限公司 | Storage battery traction control method, system, equipment and storage medium |
| CN113060172A (en) * | 2021-03-10 | 2021-07-02 | 交控科技股份有限公司 | Air conditioning system of wisdom train high pressure energy storage formula power supply |
| CN113665361A (en) * | 2020-04-30 | 2021-11-19 | 比亚迪股份有限公司 | Vehicle high-voltage power supply system, control method thereof and vehicle |
| CN114013294A (en) * | 2021-10-19 | 2022-02-08 | 中车永济电机有限公司 | High-voltage electrical appliance box |
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| CN207257658U (en) * | 2017-09-04 | 2018-04-20 | 中建空列（北京）工程设计研究院有限公司 | The power set and system of monorail train, monorail train and monorail train system |
| CN109367398A (en) * | 2018-11-13 | 2019-02-22 | 中国铁路总公司 | DC auxiliary power system |
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| CN113665361B (en) * | 2020-04-30 | 2023-05-09 | 比亚迪股份有限公司 | Vehicle high-voltage power supply system, control method thereof and vehicle |
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