CN109659988A - A kind of hybrid energy-storing charging system and method - Google Patents
A kind of hybrid energy-storing charging system and method Download PDFInfo
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- CN109659988A CN109659988A CN201710936495.2A CN201710936495A CN109659988A CN 109659988 A CN109659988 A CN 109659988A CN 201710936495 A CN201710936495 A CN 201710936495A CN 109659988 A CN109659988 A CN 109659988A
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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
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
-
- 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
- H02J15/00—Systems for storing electric energy
-
- 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
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
- H02M3/33576—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
- H02M3/33592—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer having a synchronous rectifier circuit or a synchronous freewheeling circuit at the secondary side of an isolation transformer
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention discloses a kind of hybrid energy-storing charging system and method, the system includes charger module, super-capacitor module and battery module, the high-pressure side of charger module is separately connected high voltage dc bus, super-capacitor module, low-pressure side is separately connected low-voltage direct bus, battery module, the control of charger module will be respectively super-capacitor module after high voltage dc bus voltage transformation, battery module charging, and control super-capacitor module electric discharge is to provide high-pressure side electric motor starting percussion power, battery module electric discharge is controlled to provide continuous power to high voltage dc bus；This method is the method using above-mentioned hybrid energy-storing charging system.The present invention merges battery and super capacitor and carries out hybrid energy-storing charging, and making it possible to meet high-pressure side simultaneously has the needs of greater impact power and low pressure survey smaller continuous power, and have many advantages, such as at low cost, utilization rate and it is high-efficient, volume weight is small.
Description
Technical field
The present invention relates to rail traffic vehicles technical field more particularly to a kind of hybrid energy-storing charging system and methods.
Background technique
In rail transit train, to meet different function needs, various direct-flow electricity utilization apparatus are generally equipped with, these
Electrical equipment namely for load；According to current characteristics and significance level, load can be divided into three types in train: the first is punching
Load is hit, such load needs very big dash current and percussion power when starting, and electric current and power are smaller after starting；Second
For permanent load, the electric current and power of such load are smaller, but importance is very high, need to guarantee to the greatest extent for electrically continuous
Property；The third is general load.
It is at present usually to be filled according to configuration charger as shown in Figure 1 and energy storage in train for the stable operation for ensureing load
It sets and carries out energy storage charge control, AC or DC input is changed into direct current output by charger when nominal situation and is supplied to load
Electricity, while charging to energy storage device, when charger failure, by energy storage device powering load；But due to energy storage device one
As be battery, and general accumulator internal resistance is larger, and when high and low pressure DC bus-bar voltage difference is larger, and there is motor in high-pressure side
When starting needs impacting start power, impacting start power is larger, when using above-mentioned energy storage charge control mode, is difficult to meet instantaneous
Heavy-current discharge demand.
At present it is usually to use following 2 kinds of modes for transient high-current needed for solving the problems, such as above-mentioned impact load:
(1) high magnification large-capacity battery is used, but the battery volume of large capacity is big, weight is big and the service life is low；
(2) high-power charger is used, but the utilization rate of high-power charger is low, low efficiency, and energy storage inductor difficult design.
Therefore it is urgent to provide a kind of energy storage charging system, method, making it possible to meet simultaneously high-pressure side has greater impact function
The demand of rate and smaller continuous power, and the volume weight that can reduce system cost of implementation, reduce system, improve system
Utilization rate and efficiency.
Summary of the invention
The technical problem to be solved in the present invention is that, for technical problem of the existing technology, the present invention provides one
Kind can merge battery and super capacitor carries out the hybrid energy-storing charging system and method for hybrid energy-storing charging, so that full simultaneously
There is a demand of greater impact power and smaller continuous power in sufficient high-pressure side, and realizes simple, at low cost, utilization rate and high-efficient
And volume weight is small.
In order to solve the above technical problems, technical solution proposed by the present invention are as follows:
A kind of hybrid energy-storing charging system, including charger module, super-capacitor module and battery module, charger module
High-pressure side be separately connected high voltage dc bus, super-capacitor module, low-pressure side is separately connected low-voltage direct bus, battery mould
Block, the control of charger module will respectively super-capacitor module, battery module charge after high voltage dc bus voltage transformation, with
And the control super-capacitor module electric discharge is to provide high-pressure side electric motor starting percussion power, the control battery module electric discharge
To provide continuous power to high voltage dc bus.
Further improvement as present system: the charger module includes the first converter unit, the second transformation list
Member, one end of first converter unit connect high voltage dc bus, and the other end connects the super-capacitor module, for controlling
The charge and discharge of the super-capacitor module；One end of second converter unit connects high voltage dc bus, and the other end connects respectively
Connect battery module, by the isolating diode D1 connection low-voltage direct bus, for control the filling of the battery module,
Electric discharge.
Further improvement as present system: first converter unit includes the control thyristor G1 being connected in parallel
And booster circuit, the anode of the control thyristor G1 are connect with the high voltage dc bus, cathode and the super capacitor
Module connection, the input terminal of the booster circuit connect the super-capacitor module, and output end connects the high voltage dc bus.
Further improvement as present system: the booster circuit includes filter capacitor C1, diode D2 and opens
Close pipe Q1, the collector of the switching tube Q1 connect with the anode of the diode D2 respectively, pass through inductance L1 with it is described super
Capacitance module connection, the cathode of the diode D2 are connected to the emitter of the switching tube Q1 by the filter capacitor C1.
Further improvement as present system: second converter unit is two-way changing circuit.
Further improvement as present system: the two-way changing circuit includes sequentially connected first two-way changing
Module M1, transformer T1 and the second two-way changing module M2, the first conversion module M1 are connect with high voltage dc bus, institute
The second conversion module M2 is stated to connect with the battery module.
Further improvement as present system: the first two-way changing module M1 is by switching tube Q2, switching tube
The half-bridge structure module that Q3 is constituted controls the energy of the first two-way changing module M1 by controlling the switching tube Q2, switching tube Q3
Measure transmission direction.
Further improvement as present system: the second conversion module M2 be four switching tube Q4, switching tube Q5,
The full bridge structure module that switching tube Q6 and switching tube Q7 is constituted, the full bridge structure module pass through control switch pipe Q4, switch
Pipe Q5, switching tube Q6 and switching tube Q7 control the energy transmission direction of the second conversion module M2.
Further improvement as present system: the charger module is additionally provided with for the battery mould to be isolated
The anode of the isolating diode D1, the isolating diode D1 of block and low-voltage direct bus connect second converter unit, yin
Pole connects low-voltage direct bus.
The present invention further provides the method using above-mentioned hybrid energy-storing charging system, step includes:
S1. the operating status of real-time detection high voltage dc bus, when nominal situation, the charger module accesses high voltage direct current
Busbar voltage is converted, and exports charge to the super-capacitor module, battery module respectively, and to low-voltage direct
Bussed supply；When high voltage dc bus power loss needs emergency service, it is transferred to and executes step S2；
S2. control super-capacitor module electric discharge, by the charger module for electric motor starting provide percussion power, with
And the control battery module electric discharge, continuous power is provided through the charger module for high voltage dc bus.
As the further improvement of the method for the present invention, in the step S1, especially by be connected to high voltage dc bus,
The turn on thyristors pulse that thyristor G1 is controlled in the first converter unit between super-capacitor module is controlled, to described super
Grade capacitance module charges；In the step S2 especially by first converter unit with the control thyristor G1
The switching tube pulse for the booster circuit being connected in parallel carries out boosting rectifier control and is provided with discharging super capacitor energy for electric motor starting
Percussion power.
As the further improvement of the method for the present invention, in the step S1, high voltage direct current mother is connected to especially by control
Switching tube in the second converter unit between line, the battery module so that energy be transferred to by high voltage dc bus it is described
Battery module charges to the battery module；In the step S2, especially by control second converter unit
Middle switching tube is provided for high voltage dc bus and is held so that energy is transferred to the high voltage dc bus by the battery module
Continuous power
Compared with the prior art, the advantages of the present invention are as follows:
1) present invention passes through while configuring super-capacitor module and battery module, constitutes hybrid energy-storing together with charger module
Charging system provides high-pressure side electric motor starting percussion power by super-capacitor module, and battery module provides high-pressure side and continues function
Rate, the advantages of can make full use of battery and super capacitor, so that high-pressure side electric motor starting can either be met simultaneously compared with favourable opposition
The demand of power is hit, the demand that low pressure surveys smaller continuous power, while the side mixed by super capacitor with battery are also able to satisfy
Formula, compared to the mode of traditional battery using high magnification large capacity, high-power charger, the realization of system is simple, at
This low, utilization rate and high-efficient and volume weight are small, can be preferably larger suitable for high and low pressure DC bus-bar voltage difference,
And high-pressure side has in the application of impacting start power；
2) present invention further divided by setting two the first converter unit, the second converter unit converter units by charger module
Not Kong Zhi super-capacitor module, battery module charge and discharge, super-capacitor module and the first converter unit are placed in high-pressure side, energy
It is enough that percussion power is provided nearby, and since percussion power is not required to reduce by the second converter unit to the second converter unit
The capacity requirement of power demand, battery module can be further reduced the volume weight of system, realize the lightweight of system；
3) further first converter unit of the present invention is constituted by control thyristor is in parallel with booster circuit, and structure is simple, is easy to real
Existing lightweight, and can effectively realize the charge and discharge control of super-capacitor module；
4) further second converter unit of the present invention uses full-bridge modules using half-bridge module, in low-pressure side in high-pressure side, passes through
Half-bridge module is used in high-pressure side, switching tube usage quantity can be reduced, be further simplified circuit, by using full-bridge in low-pressure side
Module is converted, switching tube loss and heat dissipation pressure when can be relieved low-voltage, high-current.
Detailed description of the invention
Fig. 1 is the principle schematic diagram of traditional rail traffic energy storage charging.
Fig. 2 is the principle schematic diagram of the present embodiment hybrid energy-storing charging system.
Fig. 3 is the structural schematic diagram of charger module in the present embodiment.
Fig. 4 is the particular circuit configurations schematic diagram of the first converter unit in the present embodiment.
Fig. 5 is the particular circuit configurations schematic diagram of the second converter unit in the present embodiment.
Timing schematic diagram when Fig. 6 is the second converter unit control battery module charging in the present embodiment.
Timing schematic diagram when Fig. 7 is the second converter unit control battery module electric discharge in the present embodiment.
Marginal data: 1, charger module；11, the first converter unit；12, the second converter unit；2, super-capacitor module；
3, battery module.
Specific embodiment
Below in conjunction with Figure of description and specific preferred embodiment, the invention will be further described, but not therefore and
It limits the scope of the invention.
As shown in Fig. 2, the present embodiment hybrid energy-storing charging system includes charger module 1, super-capacitor module 2 and stores
Battery module 3, the high-pressure side of charger module 1 are separately connected high voltage dc bus, super-capacitor module 2, and low-pressure side connects respectively
Low-voltage direct bus, battery module 3 are connect, the control of charger module 1 will be respectively super after high voltage dc bus voltage transformation
Capacitance module 2, battery module 3 charge, and the electric discharge of control super-capacitor module 2 is to provide electric motor starting percussion power, control
The electric discharge of battery module 3 processed is to provide continuous power to high voltage dc bus.
It is super-capacitor module 2 and battery by charger module 1 when above-mentioned hybrid energy-storing charging system works normally
Module 3 charges, and provides steady power for low-voltage direct load；When high and low pressure DC bus-bar voltage difference is larger, and high-pressure side
When having impacting start power, discharge from super-capacitor module 2, the charged machine of battery module 3 to motor load, wherein super electricity
Molar block 2, which provides, starts on high-tension side impacting start power, and battery module 3 provides high-pressure side continuous power.
The present embodiment is larger for high and low pressure DC bus-bar voltage difference, and there be the specific of impacting start power in high-pressure side
Application demand constitutes hybrid energy-storing with charger module 1 by configuring super-capacitor module 2 and battery module 3 simultaneously together
Charging system provides high-pressure side electric motor starting percussion power by super-capacitor module 2, and as impact load is powered, battery mould
Block 3 provides high pressure and surveys continuous power, that is, ensures the continual and steady power supply of permanent load, can make full use of battery and super electricity
The advantages of appearance so that can either meet the needs of high-pressure side electric motor starting greater impact power simultaneously, be also able to satisfy high pressure survey compared with
The demand of small continuous power, while the mode mixed by super capacitor with battery use high magnification great Rong compared to traditional
The mode of the battery of amount, high-power charger, the realization of system is simple, at low cost, utilization rate and high-efficient and volume weight
It is small, it is larger can be preferably suitable for high and low pressure DC bus-bar voltage difference, and there is the application of impacting start power in high-pressure side
In.
As shown in figure 3, in the present embodiment charger module 1 include the first converter unit 11, the second converter unit 12 and
Isolating diode D1, one end of the first converter unit 11 connect high voltage dc bus, and the other end connects super-capacitor module 2, use
In the charge and discharge of control super-capacitor module 2；One end of second converter unit 12 connects high voltage dc bus, other end difference
Battery module 3 is connected, by isolating diode D1 connection low-voltage direct bus, for controlling the filling of battery module 3, putting
Electricity, the anode of isolating diode D1 connect the second converter unit 12, and cathode connects low-voltage direct bus, passes through isolating diode D1
Realize the isolation of battery module 3 and low-voltage direct bus.
The present embodiment charger module 1 is single by two transformation of the first converter unit 11 of setting, the second converter unit 12
Member controls the charge and discharge of super-capacitor module 2, battery module 3, while super-capacitor module 2 and the first converter unit respectively
11 are placed in high-pressure side, can provide percussion power nearby, and since percussion power is not required to reduce by the second converter unit 12
To the capacity requirement of the power demand of the second converter unit 12, battery module 3, the volume weight of system can be further reduced
Amount, realizes the lightweight of system.
As shown in figure 4, the first converter unit 11 includes the control thyristor G1 being connected in parallel and boosting in the present embodiment
The anode of circuit, control thyristor G1 is connect with high voltage dc bus, and cathode is connect with super-capacitor module 2, booster circuit
Input terminal connects super-capacitor module 2, and output end connects high voltage dc bus.Control thyristor G1, which specifically can be used, can turn off crystalline substance
Brake tube.
As shown in figure 4, booster circuit includes filter capacitor C1, diode D2 and switching tube Q1, switch in the present embodiment
The collector of pipe Q1 connect with the anode of diode D2 respectively, is connect by inductance L1 with super-capacitor module 2, diode D2's
Cathode is connected to the emitter of switching tube Q1 by filter capacitor C1.
When controlling 2 charge and discharge of super-capacitor module by the first converter unit of above structure 11:
When super-capacitor module 2 charges, high voltage dc bus charges through control thyristor G1 to super capacitor, and charging current is by controlling
The control of combinations brake tube G1 conduction pulses；
Super-capacitor module 2 discharge when, super-capacitor module 2 with by inductance L1, switching tube Q1, diode D2, filter capacitor C1
The booster circuit of composition forms discharge loop, is realized and is boosted by control switch pipe Q1 pulse, to discharge super-capacitor module 2
Energy is supplied to high-pressure side electric motor starting percussion power.
Above-mentioned first converter unit 11 has the advantages of simple structure and easy realization lightweight, can effectively realize super-capacitor module 2
The control of charge and discharge.
In the present embodiment, the second converter unit 12 is two-way changing circuit, and the energy by controlling two-way changing circuit passes
Defeated direction controls energy by high voltage dc bus and is transferred to battery module 3, to charge to battery module 3, and control energy
Amount is transferred to high voltage dc bus by battery module 3, to discharge the energy of battery module 3.
As shown in figure 5, the two-way changing circuit of the second converter unit of the present embodiment 12 specifically includes sequentially connected first
Two-way changing module M1, transformer T1 and the second two-way changing module M2, the first conversion module M1 and high voltage dc bus connect
It connects, the second conversion module M2 is connect with battery module 3；First two-way changing module M1 is by switching tube Q2, switching tube Q3 structure
At half-bridge structure module can reduce switching tube usage quantity, further by being converted in high-pressure side using half-bridge module
Simplify circuit；Second conversion module M2 is the full-bridge that four switching tube Q4, switching tube Q5, switching tube Q6 and switching tube Q7 are constituted
Construction module, by being converted in low-pressure side using full-bridge modules, switching tube loss and heat dissipation when can be relieved low-voltage, high-current
Pressure.First two-way changing module M1 can also be constituted using multiple above-mentioned half-bridge module series stacks, the second conversion module M2,
Transformer T1 can also be made of multiple parallel stacks.
As shown in figure 5, the first conversion module M1 is specifically by filter capacity C2, C3, equalizing resistance R1, R2 in the present embodiment
And switching tube Q2, Q3 are constituted, by control switch pipe Q2, switching tube Q3, the energy for controlling the first two-way changing module M1 is passed
Defeated direction；Second conversion module M2 is made of switching tube Q4, Q5, Q6, Q7 and filter capacitor C4, by control switch pipe Q4, is opened
Pipe Q5, switching tube Q6 and switching tube Q7 are closed, the energy transmission direction of the second conversion module M2 is controlled.
When the second converter unit 12 carries out charge and discharge control to battery module 3 using the above structure:
When battery module 3 charges, control switch pipe Q3 advanced Q4, Q7 and switching tube Q2 advanced Q5, Q6 so that energy by
High voltage dc bus is transferred to battery, and the control sequential of each switching tube is as shown in Figure 6；
When battery module 3 discharges, the advanced Q3 of control switch pipe Q4, Q7 and the advanced Q2 of Q5, Q6, so that energy is by battery
It is transferred to high voltage dc bus, the control sequential of each switching tube is as shown in Figure 7.
The method that the present embodiment utilizes above-mentioned hybrid energy-storing charging system, step include:
S1. the operating status of real-time detection high voltage dc bus, when nominal situation, charger module 1 accesses high voltage dc bus
Voltage is converted, and exports charge to super-capacitor module 2, battery module 3 respectively, and is supplied to low-voltage direct bus
Electricity；When high voltage dc bus power loss needs emergency service, it is transferred to and executes step S2；
S2. control super-capacitor module 2 is discharged, and provides percussion power and control by charger module 1 for electric motor starting
Battery module 3 discharges, and charged machine module 1 provides continuous power for high voltage dc bus.
The present embodiment specifically in step S1 accidental conditions, controls super-capacitor module by the first converter unit 11
2 voltage follow high voltage dc bus voltage, with storage energy；High voltage dc bus voltage is turned by the second converter unit 12
It is changed to low-voltage to charge the battery, while through isolating diode D1 to low-voltage direct bussed supply；
In step S2 when high voltage dc bus power loss needs emergency service, super-capacitor module 2 is carried out through the first converter unit 11
Step-up discharge provides percussion power for electric motor starting, and battery carries out step-up discharge through the second converter unit 12, is high voltage bus
Continuous power is provided.
In the present embodiment, in step S1, it is connected between high voltage dc bus, super-capacitor module 2 especially by control
The first converter unit 11 in control thyristor G1 turn on thyristors pulse, charge to super-capacitor module 2；Step S2
In especially by the switching tube Q1 pulse of booster circuit being connected in parallel in the first converter unit 11 of control with control thyristor G1
It boosts, to discharge super capacitor energy, provides percussion power for electric motor starting.
In the present embodiment, in step S1, it is connected between high voltage dc bus, battery module 3 especially by control
Switching tube (Q2 ~ Q7) in second converter unit 12 gives electric power storage so that energy is transferred to battery module 3 by high voltage dc bus
Pond module 3 charges；In step S2, especially by switching tube in the second converter unit 12 of control, so that energy is by battery
Module is transferred to the high voltage dc bus, provides continuous power, specific control sequential such as Fig. 6,7 institutes for high voltage dc bus
Show.
Above-mentioned only presently preferred embodiments of the present invention, is not intended to limit the present invention in any form.Although of the invention
It has been disclosed in a preferred embodiment above, however, it is not intended to limit the invention.Therefore, all without departing from technical solution of the present invention
Content, technical spirit any simple modifications, equivalents, and modifications made to the above embodiment, should all fall according to the present invention
In the range of technical solution of the present invention protection.
Claims (12)
1. a kind of hybrid energy-storing charging system, it is characterised in that including charger module (1), super-capacitor module (2) and store
The high-pressure side of battery module (3), the charger module (1) is separately connected high voltage dc bus, the super-capacitor module
(2), low-pressure side is separately connected low-voltage direct bus, the battery module (3), and the charger module (1) controls high pressure
It is respectively the super-capacitor module (2), battery module (3) charging after DC bus-bar voltage transformation, and controls described super
Grade capacitance module (2) discharges to provide high-pressure side electric motor starting percussion power, the electric discharge of the control battery module (3) with to height
DC bus is pressed to provide continuous power.
2. hybrid energy-storing charging system according to claim 1, which is characterized in that the charger module (1) includes the
One end of one converter unit (11), the second converter unit (12), first converter unit (11) connects high voltage dc bus, separately
One end connects the super-capacitor module (2), for controlling the charge and discharge of the super-capacitor module (2)；Second transformation
One end of unit (12) connects high voltage dc bus, and the other end is separately connected battery module (3), low-voltage direct bus, is used for
Control the charge and discharge of the battery module (3).
3. hybrid energy-storing charging system according to claim 2, it is characterised in that: first converter unit (11) includes
The anode and the high voltage dc bus of the control thyristor G1 and booster circuit being connected in parallel, the control thyristor G1 connect
It connecing, cathode is connect with the super-capacitor module (2), and the input terminal of the booster circuit connects the super-capacitor module (2),
Output end connects the high voltage dc bus.
4. hybrid energy-storing charging system according to claim 3, it is characterised in that: the booster circuit includes filter capacitor
C1, diode D2 and switching tube Q1, the collector of the switching tube Q1 connect with the anode of the diode D2 respectively, pass through
Inductance L1 is connect with the super-capacitor module (2), and the cathode of the diode D2 is connected to institute by the filter capacitor C1
State the emitter of switching tube Q1.
5. according to hybrid energy-storing charging system described in Claims 2 or 3 or 4, it is characterised in that: second converter unit
It (12) is two-way changing circuit.
6. hybrid energy-storing charging system according to claim 5, it is characterised in that: the two-way changing circuit includes successively
Connection the first two-way changing module M1, transformer T1 and the second two-way changing module M2, the first conversion module M1 with
High voltage dc bus connection, the second conversion module M2 are connect with the battery module (3).
7. hybrid energy-storing charging system according to claim 6, which is characterized in that the first two-way changing module M1 is
The half-bridge structure module being made of switching tube Q2, switching tube Q3, by controlling the switching tube Q2, switching tube Q3, described in control
The energy transmission direction of first two-way changing module M1.
8. hybrid energy-storing charging system according to claim 6, which is characterized in that the second conversion module M2 is four
The full bridge structure module that switching tube Q4, switching tube Q5, switching tube Q6 and switching tube Q7 are constituted, the full bridge structure module are led to
Control switch pipe Q4, switching tube Q5, switching tube Q6 and switching tube Q7 are crossed, the energy transmission of the second conversion module M2 is controlled
Direction.
9. according to hybrid energy-storing charging system described in Claims 2 or 3 or 4, it is characterised in that: the charger module (1)
It is additionally provided with the isolating diode D1 for the battery module (3) Yu low-voltage direct bus to be isolated, the isolating diode
The anode of D1 connects second converter unit (12), and cathode connects low-voltage direct bus.
10. utilizing the method for hybrid energy-storing charging system described in any one of claim 1~9, which is characterized in that step packet
It includes:
S1. the operating status of real-time detection high voltage dc bus, when nominal situation, the charger module (1) accesses high straightening
Stream busbar voltage is converted, and exports charge to the super-capacitor module (2), battery module (3) respectively, Yi Jixiang
Low-voltage direct bussed supply；When high voltage dc bus power loss needs emergency service, it is transferred to and executes step S2；
S2. the super-capacitor module (2) electric discharge is controlled, provides ballistic work by the charger module (1) for electric motor starting
Rate and control battery module (3) electric discharge, provide lasting function through the charger module (1) for high voltage dc bus
Rate.
11. according to the method described in claim 10, it is characterized by: in the step S1, especially by being connected to high pressure
The turn on thyristors of control thyristor G1 in the first converter unit (11) between DC bus, the super-capacitor module (2)
Pulse is controlled, and is charged to the super-capacitor module (2)；Especially by first transformation in the step S2
Boosting rectifier control is carried out with the switching tube pulse of the control thyristor G1 booster circuit being connected in parallel in unit (11), with release
Super capacitor energy provides percussion power for electric motor starting.
12. method described in 0 or 11 according to claim 1, which is characterized in that in the step S1, connected especially by control
Switching tube in the second converter unit (12) between high voltage dc bus, the battery module (3), so that energy is by high pressure
DC bus is transferred to the battery module (3), charges to the battery module (3)；In the step S2, specifically
By controlling switching tube in second converter unit (12), so that energy is transferred to the high straightening by the battery module
Bus is flowed, provides continuous power for high voltage dc bus.
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