CN108749578B - Emergency traction device and emergency vehicle trailer system - Google Patents
Emergency traction device and emergency vehicle trailer system Download PDFInfo
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- CN108749578B CN108749578B CN201811112242.4A CN201811112242A CN108749578B CN 108749578 B CN108749578 B CN 108749578B CN 201811112242 A CN201811112242 A CN 201811112242A CN 108749578 B CN108749578 B CN 108749578B
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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
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
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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
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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
- Y02T10/72—Electric energy management in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention provides a kind of emergency traction device and emergency vehicle trailer systems, are related to vehicle traction technique field, and emergency traction device is applied to vehicle, which includes: sequentially connected two-way DC/DC unit and dynamic lithium battery group；The external dc voltage received is transformed to preset first DC voltage, and preset first DC voltage is transported to dynamic lithium battery group for receiving external dc voltage by two-way DC/DC unit；The first DC voltage that dynamic lithium battery group is used to receive stores, and the first DC voltage is transported to two-way DC/DC unit under emergency rating, so that the first DC voltage conversion is preset second DC voltage by two-way DC/DC unit, and the second DC voltage is transported to the electrical equipment on vehicle.The present invention can effectively improve the utility ratio of emergency propulsive efficiency and battery.
Description
Technical field
The present invention relates to vehicle traction technique fields, more particularly, to a kind of emergency traction device and emergency vehicle traction system
System.
Background technique
Train when causing route high voltage supply to interrupt due to external factor, can only wait for rescue locomotive during operation
Rescue, during this period of time, the comfort level of passenger and safety can not ensure, it is most likely that cause it is unnecessary probably
Unbearably.To solve this problem, respectively traction supplier and main engine plants introduce battery traction technology.Currently, domestic and international urban rail car
Be exactly but the existing emergency traction device when train high voltage supply interrupts using the application scenarios of battery traction technology
It is able to achieve the short distance of vehicle, the emergency traction in small ramp, the speed of service and distance of train are lower, and there are battery applications
Rate is lower, the lower problem of propulsive efficiency when meeting an urgent need traction.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of emergency traction device and emergency vehicle trailer system, it can
Effectively improve the utility ratio of emergency propulsive efficiency and battery.
In a first aspect, the device is applied to vehicle, the device packet the embodiment of the invention provides a kind of emergency traction device
It includes: sequentially connected two-way DC/DC unit and dynamic lithium battery group；Two-way DC/DC unit, will for receiving external dc voltage
The external dc voltage received is transformed to preset first DC voltage, and preset first DC voltage is transported to power
Lithium battery group；Wherein, two-way DC/DC unit includes multiple full-bridge submodules, and multiple full-bridge submodule head and the tail are connected in series；Power
The first DC voltage that lithium battery group is used to receive stores, and is transported to the first DC voltage under emergency rating
Two-way DC/DC unit, so that the first DC voltage conversion is preset second DC voltage by two-way DC/DC unit, and by the
Two DC voltages are transported to the electrical equipment on vehicle.
With reference to first aspect, the embodiment of the invention provides the first possible embodiments of first aspect, wherein more
A full-bridge submodule is provided with bus capacitor, the last one concatenated full-bridge submodule is used to be remaining concatenated full-bridge submodule
Bus capacitor charging in block.
The possible embodiment of with reference to first aspect the first, the embodiment of the invention provides second of first aspect
Possible embodiment, wherein dynamic lithium battery group be arranged in the last one full-bridge submodule, and dynamic lithium battery group with most
Bus capacitor in the latter full-bridge submodule is in parallel；In remaining full-bridge submodule in addition to the last one full-bridge submodule
It is provided with the super capacitor for energy storage.
With reference to first aspect, the embodiment of the invention provides the third possible embodiments of first aspect, wherein on
Stating device further includes the traction convertor unit connecting with two-way DC/DC unit；Traction convertor unit is for receiving two-way DC/
Second DC voltage of DC unit transportation, and be default alternating voltage by the second DC voltage inversion received, output is default
Alternating voltage, so that the electrical equipment on vehicle uses.
With reference to first aspect, the embodiment of the invention provides the 4th kind of possible embodiments of first aspect, wherein double
To DC/DC unit further include with multiple full-bridge submodules be connected in series filter inductance and with multiple full-bridge submodules and filtering
The filter capacitor of inductance in parallel；Wherein, filter inductance and filter capacitor form filter circuit.
With reference to first aspect, the embodiment of the invention provides the 5th kind of possible embodiments of first aspect, wherein
It include multiple IGBT and multiple diodes, one diode of each IGBT inverse parallel in MMC topological structure.
With reference to first aspect, the embodiment of the invention provides the 6th kind of possible embodiments of first aspect, wherein double
Also it is connected to DC/DC unit with pantograph, to receive external dc voltage by pantograph.
With reference to first aspect, the embodiment of the invention provides the 7th kind of possible embodiments of first aspect, wherein dynamic
Power lithium battery group includes multiple lithium batteries.
Second aspect, the embodiment of the present invention also provides a kind of emergency vehicle trailer system, including vehicle, and is arranged in vehicle
On as any one of the 8th kind of possible embodiment of first aspect to first aspect emergency traction device；Answer jerk
Leading-in device is used to provide emergency power supply to vehicle.
The embodiment of the invention provides a kind of emergency traction device and emergency vehicle trailer system, which includes successively connecting
The two-way DC/DC unit and dynamic lithium battery group connect, two-way DC/DC unit receive external dc voltage, the outside that will be received
DC voltage conversion is preset first DC voltage, and preset first DC voltage is transported to dynamic lithium battery group, is moved
Power lithium battery group stores the first DC voltage received, and under emergency rating is transported to the first DC voltage double
To DC/DC unit, so that the first DC voltage conversion is preset second DC voltage by two-way DC/DC unit, and by second
DC voltage is transported to the electrical equipment on vehicle.Since the lithium battery in emergency traction device being capable of energy storage and in emergency rating
It is lower that first DC voltage is transformed to preset second DC voltage by two-way DC/DC unit, the second DC voltage is defeated
The electrical equipment being sent on vehicle, therefore the utility ratio of emergency propulsive efficiency and battery can be effectively improved.
Other features and advantages of the present invention will illustrate in the following description, also, partly become from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention are in specification, claims
And specifically noted structure is achieved and obtained in attached drawing.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment is cited below particularly, and cooperate
Appended attached drawing, is described in detail below.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 shows a kind of structural schematic diagram for traction device of meeting an urgent need provided by the embodiment of the present invention；
Fig. 2 shows the structural schematic diagrams of the emergency traction device of another kind provided by the embodiment of the present invention；
Fig. 3 shows the structural schematic diagram of the emergency traction device of another kind provided by the embodiment of the present invention；
Fig. 4 shows a kind of structural schematic diagram of two-way DC/DC unit provided by the embodiment of the present invention；
Fig. 5 shows the structural schematic diagram of the two-way DC/DC unit of another kind provided by the embodiment of the present invention；
Fig. 6 shows a kind of structural schematic diagram of emergency vehicle trailer system provided by the embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Technical solution be clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
Current existing vehicle, when train high voltage supply interrupts, can only realize vehicle using battery traction technical application
Short distance, small ramp emergency traction, the speed of service of train and distance are lower, are based on this, and the embodiment of the present invention provides
A kind of emergency traction device and emergency vehicle trailer system, the application of emergency propulsive efficiency and battery can be effectively improved
Rate.
For convenient for understanding the present embodiment, first to a kind of emergency traction device disclosed in the embodiment of the present invention into
Row is discussed in detail.
In one embodiment, the embodiment of the invention provides a kind of emergency traction device, which is applied to vehicle,
A kind of structural schematic diagram of emergency traction device shown in Figure 1, the device include sequentially connected two-way DC/DC unit 10
With dynamic lithium battery group 20.
The external dc voltage received is transformed to preset by two-way DC/DC unit for receiving external dc voltage
First DC voltage, and preset first DC voltage is transported to dynamic lithium battery group, two-way DC/DC unit includes multiple complete
Bridge submodule, multiple full-bridge submodule head and the tail are connected in series.Wherein, for sake of simplicity, not illustrating two-way DC/DC unit in power 1
Specific structure.
The first DC voltage that dynamic lithium battery group is used to receive stores, and straight by first under emergency rating
Galvanic electricity pressure is transported to two-way DC/DC unit, so that the first DC voltage conversion is preset second direct current by two-way DC/DC unit
Voltage, and the second DC voltage is transported to the electrical equipment on vehicle.
Above-mentioned emergency traction device provided in an embodiment of the present invention, including sequentially connected two-way DC/DC unit and power
Lithium battery group, two-way DC/DC unit receive external dc voltage, the external dc voltage received are transformed to preset first
DC voltage, and preset first DC voltage is transported to dynamic lithium battery group, dynamic lithium battery group will receive first
DC voltage is stored, and the first DC voltage is transported to two-way DC/DC unit under emergency rating, so that two-way DC/
First DC voltage conversion is preset second DC voltage by DC unit, and the second DC voltage is transported to the use on vehicle
Electric equipment.Due to the lithium battery in emergency traction device can energy storage and under emergency rating by the first DC voltage by two-way
DC/DC unit is transformed to preset second DC voltage, the second DC voltage is transported to the electrical equipment on vehicle, therefore
The utility ratio of emergency propulsive efficiency and battery can be effectively improved.
Specifically, the emergency traction device can be applied in railcar operation, do not need to answer in vehicle normal operation
When jerk leading-in device, two-way DC/DC unit receives external dc voltage, the external dc voltage received is transformed to preset
First DC voltage, and preset first DC voltage is transported to dynamic lithium battery group, dynamic lithium battery group will receive
First DC voltage is stored, and when the operation train in power grid excessively causes network voltage to reduce, dynamic lithium battery group can
The energy of storage to be released, to guarantee the stabilization of network voltage, i.e. the dynamic lithium battery group storage that is able to carry out energy
And release.Wherein, external dc voltage can be the network voltage of DC1500V, and preset first DC voltage can be 220V,
The network voltage of DC1500V can be transformed to 220V DC voltage and convey 220V DC voltage by i.e. two-way DC/DC unit
To dynamic lithium battery group, 220V DC voltage is stored by dynamic lithium battery group.It is interrupted in train high voltage supply and needs to answer
When jerk leading-in device is powered, the first DC voltage received is transported to two-way DC/DC unit by dynamic lithium battery group, so that double
By the first DC voltage conversion it is preset second DC voltage to DC/DC unit, and the second DC voltage is transported to vehicle
On electrical equipment, and be that preset alternating voltage is used with electricity supply and use equipment by the second DC voltage inversion by current transformer,
Wherein, the second DC voltage can be 0 DC voltage for arriving 1500V according to the concrete condition of vehicle, and preset alternating voltage can
To be 1200V, the electrical equipments such as traction electric machine on supply vehicle or line on other vehicles, and preset alternating voltage can root
Change amplitude according to duty requirements.Because of the high-energy density of lithium battery, high-discharge-rate performance, using lithium battery as traction power
High-power, heavy-current discharge can be provided for battery traction, greatly improve the performance indicator of battery traction.The emergency
Traction device has many advantages, such as utilization rate height, and hauling speed is fast, can preferably solve current subway train emergency hauling distance
Short, the problems such as speed is slow low with climbing capacity.
The structural schematic diagram of another emergency traction device shown in Figure 2 also illustrates on the basis of Fig. 1
Full-bridge submodule 101, bus capacitor 101a, super capacitor 101b, traction convertor unit 30, filter inductance 102, filter capacitor
103, IGBT101c, diode 101d, pantograph 40 and lithium battery 201, in order to make it easy to understand, below to emergency shown in Fig. 2
Traction device specific explanations are as follows:
Two-way DC/DC unit includes multiple full-bridge submodules, and multiple full-bridge submodule head and the tail are connected in series.Multiple full-bridge
Module is provided with bus capacitor, the last one concatenated full-bridge submodule is used for as the mother in remaining concatenated full-bridge submodule
Line capacitance charging.Dynamic lithium battery group is arranged in the last one full-bridge submodule, and dynamic lithium battery group is complete with the last one
Bus capacitor in bridge submodule is in parallel；Use is provided in remaining full-bridge submodule in addition to the last one full-bridge submodule
In the super capacitor of energy storage.
The device further includes the traction convertor unit connecting with two-way DC/DC unit；Traction convertor unit is for connecing
The second DC voltage of two-way DC/DC unit transportation is received, and is default alternating voltage by the second DC voltage inversion received,
Default alternating voltage is exported, so that the electrical equipments such as traction electric machine on vehicle use.Two-way DC/DC unit further include with it is multiple
The filter inductance and the filter capacitor in parallel with multiple full-bridge submodules and filter inductance that full-bridge submodule is connected in series；Its
In, filter inductance and filter capacitor form filter circuit.Including multiple IGBT and multiple diodes in full-bridge submodule, each
The transformation of DC to DC is realized in one diode of IGBT inverse parallel, multiple full-bridge submodule series connection, can be by dynamic lithium battery
The lower DC voltage conversion of voltage value of group storage is the higher DC voltage of voltage value, is set with supplying the electricity consumptions such as traction electric machine
It is standby, it can also be the lower DC voltage of voltage value by the higher DC voltage conversion of voltage value, dynamic lithium battery group is arrived in storage
In.Two-way DC/DC unit is also connected with pantograph, to receive external dc voltage by pantograph.Dynamic lithium battery group includes
Multiple lithium batteries.
Specifically, two-way DC/DC unit receives external dc voltage, the external dc voltage that will be received by pantograph
It is transformed to preset first DC voltage, and preset first DC voltage is transported to dynamic lithium battery group, dynamic lithium battery
Group stores the first DC voltage received, and the first DC voltage is transported to two-way DC/DC under emergency rating
First DC voltage conversion is preset second DC voltage, and the second DC voltage is conveyed by unit, two-way DC/DC unit
To traction convertor unit, traction convertor unit receives the second DC voltage of two-way DC/DC unit transportation, and will receive
The the second DC voltage inversion arrived is default alternating voltage, exports default alternating voltage, so that the traction electric machine etc. on vehicle is used
Electric equipment uses.In one embodiment, referring to the structural schematic diagram of another emergency traction device as shown in Figure 3, Fig. 3
In illustrate dynamic lithium battery group, two-way DC/DC unit, pantograph and traction convertor unit, the four-headed arrow table in Fig. 3
Show that voltage can have double slashes, diclinic on the four-headed arrow between dynamic lithium battery group and two-way DC/DC unit with two-way flow
Thick stick indicates that dynamic lithium battery group and two-way DC/DC unit are that double-circuit connects, two-way DC/DC unit and traction convertor unit it
Between four-headed arrow on double slashes indicate that two-way DC/DC unit with traction convertor unit is that double-circuit connects, answering in Fig. 3
Jerk leading-in device is mainly made of dynamic lithium battery group and two-way DC/DC unit, which can be directly accessed traction convertor list
At the DC bus of first front end, i.e., DC1500V pantograph, the device can realize energy between lithium battery group and DC1500V power grid
Two-way flow, i.e. the DC voltage of 1500V can be reduced to the lithium battery group by two-way DC/DC unit by DC1500V power grid
DC voltage needed for charging, the lithium battery group can also be risen to the voltage value of DC voltage by two-way DC/DC unit
1500V, so that energy is supplemented to DC1500V power grid, to promote the runnability of traction electric machine.
When subway train operation is when electric braking mode, energy is fed back to by traction electric machine by traction convertor
In DC1500V power grid, when having no other electricity consumption trains in power grid, extra energy can be deposited by two-way DC/DC unit
Storage is consumed into dynamic lithium battery group rather than by braking resistor；Excessively network voltage is caused to drop when runing train in power grid
When low, the energy in dynamic lithium battery can be released, to guarantee the stabilization of DC1500V network voltage.
When DC1500V power grid interrupts for some reason, power supply unit of the device as traction convertor unit, two-way DC/DC
Unit will be supplied to traction convertor unit after direct current electric boost that dynamic lithium battery group inputs, provide for battery traction dynamic
Power.The output voltage amplitude of the device can be adjusted according to the duty requirements of emergency traction.The adjustment of voltage magnitude is mainly used to
The amplitude of the direct current reactor electric current of traction convertor front end is matched so that reactor works in optimum state.Device output
Voltage adjusts each IGBT device turn-on time in the mainly switching and submodule by the full-bridge submodule of two-way DC/DC unit
To realize.
By taking the two-way DC/DC unit of three full-bridge submodules as an example, as Fig. 4 illustrates a kind of two-way DC/DC unit
Structural schematic diagram, through inductance L1 and capacitor after the DC/DC unit is concatenated using three groups of full-bridge submodule head and the tail as can be seen from Figure 4
It is exported after the LC filter circuit that C4 is constituted, two output ends are respectively the end A1 and the end A2.In the DC/DC unit each full-bridge submodule it
Between the mutual transmitting of energy may be implemented, that is, only using the dynamic lithium battery group at 3 DC side of full-bridge submodule can be completed entirely
The foundation of 2 DC voltage of bridge submodule 1 and full-bridge submodule.Full-bridge submodule 3 is filled to 2 DC bus capacitor C2 of full-bridge submodule
Electrical circuit are as follows: dynamic lithium battery group is through IGBT device VT9, IGBT device VT8 anti-paralleled diode, capacitor C2, IGBT device VT6
Anti-paralleled diode, IGBT device VT4 anti-paralleled diode, IGBT device VT1, inductance L1, bus capacitor C4 and IGBT device
VT11, wherein VT1 is constantly on state, and bus electricity is adjusted in the duty ratio for adjusting IGBT device VT9 and VT11 driving pulse
Hold the amplitude of C2 both end voltage, to realize that capacitor C2 both end voltage smoothly rises to expection voltage；Full-bridge submodule 3 gives full-bridge
1 DC bus capacitor C1 charge circuit of module are as follows: dynamic lithium battery group is through IGBT device VT9, two pole of IGBT device VT8 inverse parallel
Pipe, IGBT device VT5, IGBT device VT4 anti-paralleled diode, capacitor C1, IGBT device VT2 anti-paralleled diode, inductance L1,
Bus capacitor C4 and IGBT device VT11, wherein VT5 is constantly on state, and the duty ratio for adjusting VT9 driving pulse is adjustable
The amplitude of bus capacitor C2 both end voltage, to realize that capacitor C1 both end voltage smoothly rises to voltage rating.Full-bridge submodule 3 is given
1 DC bus capacitor C1 of full-bridge submodule and 2 DC bus capacitor C2 of full-bridge submodule charging refers to above-mentioned the last one full-bridge
Module is used to charge for the bus capacitor of remaining concatenated full-bridge submodule, and the full-bridge submodule 3 in Fig. 4 is above-mentioned last
One full-bridge submodule.
When dynamic lithium battery group carries out energy stores and release, three full-bridge submodules in two-way DC/DC unit are equal
It is in running order, full-bridge submodule 1 and full-bridge submodule 2 voltages for being responsible for matching full-bridge submodule 3 under the working condition
And it is not involved in energy storage, the storage of energy can be improved by way of increasing super capacitor or other energy storage devices in the module
The structural schematic diagram of amount, the two-way DC/DC unit after increasing super capacitor is as shown in Figure 5.As can be seen from Figure 5 in full-bridge submodule
Increase super capacitor storage unit at the DC bus of block 1 and full-bridge submodule 2, when meeting an urgent need traction, two-way DC/DC unit
In three full-bridge submodules working quantity by traction requirements of actually meeting an urgent need (comprising pull-in time, hauling speed etc.) depending on.
The driving pulse that the output voltage amplitude at the both ends A1 and A2 mainly passes through each IGBT device of full-bridge submodule in adjusting work accounts for
Empty ratio is to realize, to improve the efficiency of two-way DC/DC unit.It is simply introduced by taking the maximum exportable 500V of single submodule as an example double
To the working principle of DC/DC unit: when traction convertor unit input voltage range is 0~500V, at this time only at module 3
In working condition, remaining two module is in bypass condition；When traction convertor unit input voltage range is 500~1000V,
Module 3 and module 2 are in running order at this time, and module 1 is in bypass condition, and module 2 and 3 is now in common equal pressure condition,
So that the efficiency optimization of two submodules；When traction convertor unit input voltage range is 1000~1500V, three submodules
Block is in pressure working condition, so that the working efficiency of two-way DC/DC unit is optimal.
In conclusion above-mentioned emergency traction device provided in an embodiment of the present invention, two-way DC/DC unit are connect by pantograph
External dc voltage is received, the external dc voltage received is transformed to preset first DC voltage, and by preset first
DC voltage is transported to dynamic lithium battery group, and dynamic lithium battery group stores the first DC voltage received, and is answering
The first DC voltage is transported to two-way DC/DC unit under anxious state, so that two-way DC/DC unit is by the first DC voltage conversion
It for preset second DC voltage, and is default alternating voltage by the inversion of traction convertor unit by the second DC voltage, it is defeated
The electrical equipment being sent on vehicle, is used with electricity supply and use equipment.Due to emergency traction device in lithium battery can energy storage and
The first DC voltage is transformed to preset second DC voltage by two-way DC/DC unit under emergency rating, it is straight by second
Galvanic electricity pressure is transported to the electrical equipment on vehicle, therefore can effectively improve the utility ratio of emergency propulsive efficiency and battery.
The emergency traction device based on the above embodiment, the embodiment of the invention also provides a kind of tractions of emergency vehicle
System, including vehicle, and be arranged on vehicle such as above-mentioned emergency traction device, traction device of meeting an urgent need to vehicle for mentioning
For emergency power supply, a kind of structural schematic diagram of emergency vehicle trailer system provided in an embodiment of the present invention is shown referring to Fig. 6, is wrapped
Include vehicle 100, and be arranged on vehicle such as above-mentioned emergency traction device 200.
It should be appreciated that Fig. 6 is only a kind of structural schematic diagram of emergency vehicle trailer system, rather than emergency vehicle is drawn
The exclusive architecture of system can also include in actual use other function structure, specifically with reality in addition to structure shown in fig. 6
Subject to the service condition of border, it is not limited by the embodiments of the present invention.
Above-mentioned emergency vehicle trailer system provided in an embodiment of the present invention receives external dc by two-way DC/DC unit
The external dc voltage received is transformed to preset first DC voltage by voltage, and preset first DC voltage is defeated
It is sent to dynamic lithium battery group, dynamic lithium battery group stores the first DC voltage received, and will under emergency rating
First DC voltage is transported to two-way DC/DC unit, so that the first DC voltage conversion is preset the by two-way DC/DC unit
Two DC voltages, and the second DC voltage is transported to the electrical equipment on vehicle.Due to the lithium battery in emergency traction device
Energy storage and the first DC voltage can be transformed to preset second direct current by two-way DC/DC unit under emergency rating
Pressure, is transported to the electrical equipment on vehicle for the second DC voltage, therefore can effectively improve emergency propulsive efficiency and electric power storage
The utility ratio in pond.
In addition, in the description of the embodiment of the present invention unless specifically defined or limited otherwise, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside", " side ", "bottom" is orientation based on the figure or position
Relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have
There is specific orientation, be constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " the
One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
Finally, it should be noted that embodiment described above, only a specific embodiment of the invention, to illustrate the present invention
Technical solution, rather than its limitations, scope of protection of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, those skilled in the art should understand that: anyone skilled in the art
In the technical scope disclosed by the present invention, it can still modify to technical solution documented by previous embodiment or can be light
It is readily conceivable that variation or equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make
The essence of corresponding technical solution is detached from the spirit and scope of technical solution of the embodiment of the present invention, should all cover in protection of the invention
Within the scope of.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. a kind of emergency traction device, which is characterized in that described device is applied to vehicle, and described device includes: sequentially connected
Two-way DC/DC unit and dynamic lithium battery group；
The external dc voltage received is transformed to pre- by the two-way DC/DC unit for receiving external dc voltage
If the first DC voltage, and preset first DC voltage is transported to the dynamic lithium battery group；Wherein, described double
It include multiple full-bridge submodules to DC/DC unit, multiple full-bridge submodule head and the tail are connected in series；
The dynamic lithium battery group is used to store first DC voltage received, and by institute under emergency rating
It states the first DC voltage and is transported to the two-way DC/DC unit, so that the two-way DC/DC unit is by first DC voltage
It is transformed to preset second DC voltage, and second DC voltage is transported to the electrical equipment on the vehicle；
Multiple full-bridge submodules are provided with bus capacitor, the last one concatenated full-bridge submodule be used for for it is concatenated its
Bus capacitor charging in the remaining full-bridge submodule；The dynamic lithium battery group is arranged in the last one described full-bridge submodule
In, and the dynamic lithium battery group is in parallel with the bus capacitor in the last one described full-bridge submodule；
It is provided in remaining described full-bridge submodule in addition to the last one described full-bridge submodule for the super of energy storage
Capacitor.
2. the apparatus according to claim 1, which is characterized in that described device further includes connecting with the two-way DC/DC unit
The traction convertor unit connect；
The traction convertor unit is used to receive second DC voltage of the two-way DC/DC unit transportation, and will connect
The the second DC voltage inversion received is default alternating voltage, the default alternating voltage is exported, for the use on vehicle
Electric equipment uses.
3. the apparatus according to claim 1, which is characterized in that the two-way DC/DC unit further include with it is multiple described complete
The filter inductance and the filtered electrical in parallel with multiple full-bridge submodules and the filter inductance that bridge submodule is connected in series
Hold；Wherein, the filter inductance and the filter capacitor form filter circuit.
4. the apparatus according to claim 1, which is characterized in that include multiple IGBT and multiple two in the full-bridge submodule
Pole pipe, each one diode of the IGBT inverse parallel.
5. the apparatus according to claim 1, which is characterized in that the two-way DC/DC unit is also connected with pantograph, with logical
It crosses the pantograph and receives the external dc voltage.
6. the apparatus according to claim 1, which is characterized in that the dynamic lithium battery group includes multiple lithium batteries.
7. a kind of emergency vehicle trailer system, which is characterized in that including vehicle, and be arranged on the vehicle as right is wanted
Seek 1 to 6 described in any item emergency traction devices；The emergency traction device is used to provide emergency power supply to the vehicle.
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| CN105398353B (en) * | 2015-10-23 | 2019-01-08 | 惠州市亿能电子有限公司 | A kind of rail transit locomotive power-supply system and its control method |
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Denomination of invention: Emergency traction device and emergency traction system of vehicle Effective date of registration: 20191111 Granted publication date: 20181228 Pledgee: New United Group Co., Ltd. Pledgor: Xin Yu track traffic Science and Technology Ltd. Registration number: Y2019980000550 |
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Application publication date: 20181106 Assignee: Sou beautiful (Beijing) Technology Development Co., Ltd Assignor: Xin Yu track traffic Science and Technology Ltd. Contract record no.: X2020980000539 Denomination of invention: Emergency traction device and emergency traction system of vehicle Granted publication date: 20181228 License type: Common License Record date: 20200309 |
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