CN109904909A - A kind of energy storage charging system - Google Patents
A kind of energy storage charging system Download PDFInfo
- Publication number
- CN109904909A CN109904909A CN201910307939.5A CN201910307939A CN109904909A CN 109904909 A CN109904909 A CN 109904909A CN 201910307939 A CN201910307939 A CN 201910307939A CN 109904909 A CN109904909 A CN 109904909A
- Authority
- CN
- China
- Prior art keywords
- energy storage
- bus
- transformation
- energy
- way
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
-
- 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
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Landscapes
- 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 invention discloses a kind of energy storage charging system, two-way DC/DC converting means and DC bus comprising high-frequency isolation transformation, AC/DC converting means and DC bus comprising high-frequency isolation transformation include charging system of electric powercar.Two-way the first tie point of DC/DC device is connected to energy storage device；Second tie point is connected to DC bus, and the electric energy of energy storage device is carried out two-way exchange with DC bus after high-frequency isolation converts by two-way DC/DC device；The first tie point of AC/DC device is connected to power grid；Second tie point is connected to identical DC bus.The high-frequency isolation transformer of the two-way changing device of energy storage device of the invention with DC bus Jing Guo high-frequency isolation is isolated, adjust the electric energy by transformer, to adjust DC bus to the charging voltage and electric current of energy storage device, and energy storage device is adjusted to the discharge voltage and electric current of DC bus, achieve the purpose that charge to electric vehicle.
Description
Technical field
The present invention relates to a kind of charging systems, and in particular to a kind of energy storage charging system.
Background technique
General charging system of electric powercar takes electricity, but the limitation due to AC network in power offer from AC network, special
It is not that the capacity that single case becomes is limited, it is impossible to which access is more than the charging system of its capacity.AC network is in different periods simultaneously
Electricity cost on there are difference, and electric vehicle charging is the electricity consumption of a randomness, so exist using the wave crest electricity charge, or
Can not full power charging the case where.
In addition, in multiple energy storage device access systems, since the voltage of single energy storage device is different, the electricity of internal element
Press unbalanced, may cause multiple energy storage devices can not be directly in parallel, or in parallel is used for a long time that there are hidden danger.Especially lithium ion
Battery, when forming large-scale energy-storage system, series-parallel battery is too many, the unbalanced technology used as its extensive energy storage of battery
Bottleneck.
It is more outstanding to be, retired battery be used as energy storage when, the difference of different battery packs is bigger, can not directly parallel connection make
With charge and discharge process needs to be treated differently.
At present in the energy-storage system used, when energy storage device is connect with DC bus, there are short-circuit protections
Problem.Namely side generation short circuit, the electricity of energy storage device are connect with DC bus when short-circuit or converting means occurs for DC bus
It can be discharged into short dot also by circuit, this just causes the risk of fault spread.Traditional solution is in inversion system
It exchanges side and increases isolating transformer, since frequency is lower, the electric energy across transformer is still very big, and in DC bus, do not have
The electric energy of effective method limitation energy storage device release.
To the charge and discharge application with impact feature, it is all restricted to directly adopt a kind of energy storage mode.Such as energy
The large current charge for measuring recycling, cost or the volume for directlying adopt a kind of battery are larger, and solution is using different energy storage
Mode combines, and big multiplying power short time energy storage uses super capacitor or big multiplying power energy-storage battery, and long-time energy storage uses general lithium
Ion battery combines, and cannot flexibly carry out energy conversion.
Summary of the invention
The technical problem to be solved by the present invention is to a kind of energy storage charging systems, and different energy storage devices are treated with a certain discrimination, point
Not carry out charge and discharge electric treatment, be isolated between energy storage device and DC bus by high frequency transformer, energy storage device is limited when short-circuit
System, effective widened risk of accident prevention effectively solve many deficiencies in the prior art.
The present invention is achieved through the following technical solutions: a kind of energy storage charging system, A: converting comprising high-frequency isolation
Two-way DC/DC converting means and DC bus；Two-way the first tie point of DC/DC device is connected to energy storage device；Second connects
Contact is connected to DC bus, two-way DC/DC device by the electric energy of energy storage device after high-frequency isolation converts with DC bus
Carry out two-way exchange；
B: AC/DC converting means and DC bus comprising high-frequency isolation transformation；The connection of the first tie point of AC/DC device
To AC network；Second tie point is connected to DC bus, and AC/DC device is by power grid electric energy to straight after high-frequency isolation converts
It flows bus and carries out electric energy supplement；
C: comprising the device to charge to electric vehicle, first tie point of device DC bus thus, the second tie point
For electric vehicle charging port, according to electric vehicle demand voltage and electric current, the charging of the dynamic regulation busbar voltage and electric vehicle is electric
Stream.
As a preferred technical solution, comprising high-frequency isolation transformation two-way DC/DC converting means include the first order transformation,
High-frequency isolation transformer, second level transformation, first order transformation connection energy storage device, second level transformation connection DC bus, high frequency
Isolating transformer connects first order transformation and second level transformation.
The two-way DC/DC transformation of high-frequency isolation as a preferred technical solution, has both direction transformation, and first direction becomes
Change: the direct current energy of energy-storage units becomes high-frequency electrical energy by the first order, passes through the change of the high-frequency isolation transformer
It changes, is transformed to the high-frequency electrical energy of different voltages, become direct current by the second level, be output to DC bus；
Second direction transformation: DC bus converts input direct-current electric energy to the second level, becomes high frequency by the second level
Electric energy becomes the high-frequency electrical energy of different voltages by high-frequency isolation transformer, becomes direct current energy, input storage from the first order
It can device.
The electric energy of high-frequency isolation transformer two sides is isolated by high-frequency isolation transformer as a preferred technical solution, and two
Side electric conductor is not connected directly；High-frequency electrical energy is transferred to the other side from side by electromagnetic induction.
Two-way DC/DC converting means as a preferred technical solution, converts control unit, DC/DC control comprising DC/DC
Unit internally controls first order transformation, second level transformation, high-frequency isolation transformer work, externally has one or more communications total
Line: the first communication bus connection system master unit, the second communication bus can be directly connected to energy storage device, or not
Connection, is that energy storage device is connected directly to system master unit, is communicated by system control unit with the DC/DC, to control
Make the charge or discharge to energy storage device.
DC/DC converting means control unit is according to the first communication bus and energy storage device as a preferred technical solution,
The information of the energy storage obtained is communicated, the second communication bus obtains energy-storage system and controls require information, and passes through internal sample electricity
The DC bus-bar voltage information of road acquisition controls the changing direction of two-way DC/DC converting means, transform power and transformation energy
Amount.
DC/DC converting means control unit is according to the second communication bus and energy storage device as a preferred technical solution,
The information of the energy storage obtained, and the DC bus information acquired by internal sample circuit are communicated, while according to current
Electric vehicle charge requirement and current electric grid situation control the changing direction of the two-way DC/DC converting means, transform power；
Alternatively, DC/DC converting means control unit accepts master control according to the first communication bus and system master unit communication
Order adjusts the changing direction of two-way DC/DC converting means, transform power, and system master passes through and energy storage device communication obtains
The information of energy storage, and according to current electric vehicle charge requirement and current electric grid situation, it is comprehensive to obtain reasonable two-way DC/
The changing direction of DC converting means, transform power.
DC bus includes positive electrode bus and negative electrode bus as a preferred technical solution, and positive and negative anodes bus is separately connected
To the two-way DC/DC converting means of high-frequency isolation described in one or more, while by input and output access point, it is connected to other
Device.
Energy storage device inputs by DC bus and by bidirectional DC/DC and stores bus as a preferred technical solution,
Electric energy, or release storage electric energy to bus, in the input/output procedure of electric energy, the voltage and current of electric energy is become
Change；Alternatively, two-way DC/DC converting means, connects a variety of energy storage devices, different types of energy storage device or multiple identical energy storage
Device is connected to the same bus, carries out electric energy exchange by connecting the two-way DC/DC converting means.
It is connected to the different energy storage devices of DC bus as a preferred technical solution, first and second change direction
Power is different, and the power of transformation receives the control of system control main control unit, and system master unit is changed direction and second according to first
The characteristic of the power requirement and energy storage device changed direction, according to preset optimal control mode control transformation function
Rate.
AC/DC converting means as a preferred technical solution, comprising high-frequency isolation transformation includes first order transformation, high frequency
Isolating transformer, second level transformation, first order transformation connection AC network, second level transformation connection DC bus, high-frequency isolation
Transformer connects first order transformation and second level transformation.
The electric energy of high-frequency isolation transformer two sides is isolated by high-frequency isolation transformer as a preferred technical solution, and two
Side electric conductor is not connected directly；High-frequency electrical energy is transferred to the other side from side by electromagnetic induction.
AC/DC converting means as a preferred technical solution, converts control unit, AC/DC control unit comprising AC/DC
The internally transformation of the control first order, second level transformation, high-frequency isolation transformer work, externally have communication bus: communication bus connects
Welding system main control unit is communicated by system master unit with the AC/DC, is turned to control from electric energy of the power grid to DC bus
It changes.
System master obtains current electric vehicle charge requirement, energy storage device by communication as a preferred technical solution,
Information and current electric grid situation net interior other charging system working conditions, control the transform power of the AC/DC converting means,
Meet optimal power conversion value.
DC bus includes positive electrode bus and negative electrode bus as a preferred technical solution, and positive and negative anodes bus is separately connected
To high-frequency isolation AC/DC converting means described in one or more, while by input and output access point, it is connected to other dresses
It sets.
It is connected to the AC/DC device of DC bus as a preferred technical solution, the power of transformation receives system master list
Member control, system master unit is according to the charge requirement of current electric vehicle, the power of current electric grid and expense situation, current electric grid
The characteristic of remaining interior charging equipment power demand conditions and energy storage device is controlled according to preset optimal control mode
Transform power.
As a preferred technical solution, comprising the related device to charge to electric vehicle and logic, charging interface quantity is one
More than a, power adjustment and switching are carried out between the different DC bus that each charge port is connected, system master is according to electronic
The charge requirement of vehicle, by AC/DC, the control of two-way DC/DC, to reach the voltage and current control to DC bus.
System master is a single integrated integrated form master control or layer architecture as a preferred technical solution,
More control units combine the collecting and distributing type master control of composition.
The beneficial effects of the present invention are: the multiple energy storage devices of the present invention and two-way changing of the DC bus Jing Guo high-frequency isolation
The high-frequency isolation transformer of device is isolated, and limitation is reached by the electric energy of transformer to reduce the fault current of DC bus
Safeguard protection purpose, multiple groups energy storage device access bus, different energy storage devices by two-way isolated variable device independent
Between difference no longer influence each other or even energy storage device of different nature can be applied in combination.Simultaneously DC bus with exchange
Power grid also by the ACDC converting means of high-frequency isolation carry out electric energy supplement and DC bus directly with electric vehicle charging interface
It is connected, system master is according to current electric vehicle charge requirement, the power storage state of energy storage device, the shape of AC network
State carries out optimal charge control.
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.
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is the structural schematic diagram of the embodiment of the present invention one；
Fig. 3 is the structural schematic diagram of the embodiment of the present invention two.
Specific embodiment
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
Any feature disclosed in this specification (including any accessory claim, abstract and attached drawing), except non-specifically chatting
It states, can be replaced by other alternative features that are equivalent or have similar purpose.That is, unless specifically stated, each feature is only
It is an example in a series of equivalent or similar characteristics.
In the description of the present invention, it is to be understood that, term " one end ", " other end ", " outside ", "upper", " inside ",
The orientation or positional relationship of the instructions such as "horizontal", " coaxial ", " center ", " end ", " length ", " outer end " is based on shown in attached drawing
Orientation or positional relationship, be merely for convenience of description of the present invention and simplification of the description, rather than the device of indication or suggestion meaning
Or element must have a particular orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, in the description of the present invention, the meaning of " plurality " is at least two, such as two, three etc., unless otherwise
Clear specific restriction.
The term for the representation space relative position such as "upper", " top ", "lower", " lower section " that the present invention uses be for
A unit as shown in the drawings or feature are described relative to another unit or the relationship of feature convenient for the purpose of explanation.
The term of relative space position can be intended to include not Tongfang of the equipment in use or work other than orientation as shown in the figure
Position.For example, being described as being located at the unit of other units or feature " below " or " under " if the equipment in figure overturn
Other units or feature " top " will be located at.Therefore, exemplary term " lower section " can include above and below both orientation.
Equipment can otherwise be directed (be rotated by 90 ° or other directions), and used herein and space correlation is interpreted accordingly
Description language.
In the present invention unless specifically defined or limited otherwise, term " setting ", " socket ", " connection ", " running through ",
Terms such as " grafting " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be with
It is mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside a element, unless otherwise restricted clearly.For the common of this field
For technical staff, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
As shown in Figure 1, two-way DC/DC converting means 1 and DC bus 11 comprising high-frequency isolation transformation；Two-way DC/
The first tie point of DC device is connected to energy storage device 8；Second tie point is connected to DC bus 11, and two-way DC/DC device will store up
The electric energy of energy device 8 carries out two-way exchange with DC bus 11 after high-frequency isolation converts.
Comprising high-frequency isolation transformation two-way DC/DC converting means 1 include the first order transformation 2, high-frequency isolation transformer 4,
Second level transformation 3,2 connection energy storage device 8 of first order transformation, 2 connection DC bus 11 of second level transformation, high-frequency isolation transformer
4 connection first order transformation 2 and second level transformation 3.
In the present embodiment, the two-way DC/DC transformation of high-frequency isolation has both direction transformation, first direction transformation: energy storage list
The direct current energy of member becomes high-frequency electrical energy by the first order, by the transformation of the high-frequency isolation transformer, is transformed to
The high-frequency electrical energy of different voltages becomes direct current by the second level, is output to DC bus；
Second direction transformation: DC bus 11 converts 3 input direct-current electric energy to the second level, becomes by second level transformation 3
High-frequency electrical energy becomes the high-frequency electrical energy of different voltages by high-frequency isolation transformer, becomes direct current energy from the first order, defeated
Enter energy storage device.
In the present embodiment, the electric energy of 4 two sides of high-frequency isolation transformer is isolated by high-frequency isolation transformer, two sides electric conductor
It is not connected directly；High-frequency electrical energy is transferred to the other side from side by electromagnetic induction.
In the present embodiment, two-way DC/DC converting means includes DC/DC converting means control unit 5, DC/DC control unit
Internally control first order transformation 2, second level transformation 3, high-frequency isolation transformer 4 work, and externally have one or more communications total
Line: the first communication bus 6 connects system master, the energy storage device 8 that the second communication bus 9 can be also directly connected to.
In the present embodiment, DC/DC converting means control unit 5 is obtained according to the first communication bus 6 and the communication of system master
The information of the energy storage taken, the second communication bus 9, which can also be communicated directly with energy-storage system, obtains energy-storage system information, while by interior
The DC bus-bar voltage information of portion's sample circuit acquisition, controls the changing direction of two-way DC/DC converting means, transform power
And transformation energy.
In the present embodiment, DC bus 11 includes positive electrode bus and negative electrode bus, and positive and negative anodes bus is connected respectively to one
Or multiple two-way DC/DC converting means of high-frequency isolation, while by input and output access point, it is connected to other devices.
In the present embodiment, energy storage device 8 inputs the electric energy of the extraneous input of storage by direct current, or is put by direct current output
Electric energy out, in the input/output procedure of electric energy, the voltage and current of electric energy is varied；Alternatively, two-way DC/DC transformation dress
It sets, connects a variety of energy storage devices, different types of energy storage device or multiple identical energy storage devices, by two-way described in connection
DC/DC converting means is connected to each and every one same bus, carries out electric energy exchange.
In the present embodiment, it is connected to the different energy storage devices of DC bus, the first and second function changed direction
Rate is different, and the power of transformation receives system control unit control, and system control unit is changed direction and the second transformation according to first
The power requirement in direction and the characteristic of energy storage device control transform power according to preset optimal control mode.
In the present embodiment, AC energy is converted to direct current by high-frequency isolation AC/DC converting means 20 by AC network 12
For electric energy to DC bus 11, high-frequency isolation AC/DC converting means completes electric energy conversion by high-frequency isolation shown in 15 and 16, and 14
It for ACDC control unit, is communicated by communication bus 13 with system master, the control of system master is received, according to preset
Optimal control mode controls transform power.
In the present embodiment, DC bus 11 is connected with electric vehicle charging interface 17, the charge requirement voltage of electric vehicle and
Electric current is communicated by bus 18 with system master, and system master passes through the charge requirement information of electric vehicle, passes through AC/DC and DC/
The optimum control of DC adjusts DC bus-bar voltage and electric current, meets the charge requirement of optimal utilization of power and electric vehicle.
In the present embodiment, system master 10 collects energy storage device information by communication bus, electric vehicle charge information, and
In conjunction with the state of AC network, and the power rating of other interior charging systems is netted, the AC power by controlling AC/DC obtains
It takes, and controls the power direction and watt level of energy storage device by two-way DC/DC, adjust DC bus-bar voltage and electricity
Stream, meets the charge requirement of optimal utilization of power and electric vehicle.
Embodiment 1:
As the two-way DC/DC of attached drawing 2, a kind of high-frequency isolation two-way changing energy storage charging system, the transformation containing high-frequency isolation becomes
Changing device, DC bus, battery pack, two-way AC/DC inverter 20.
High-frequency isolation two-way changing energy-storage system includes the two-way change of multiple groups high-frequency isolation that multiple groups battery pack is connected with battery
Changing device is connected to DC bus.Two-way inverter connection DC bus and AC network connect.
The energy of multiple groups battery is converted by two-way DC/DC, two-way DC/AC is converted and discharged to power grid, while power grid passes through
The converting means charges to battery pack.
Meanwhile the program is also used to realize V2G function, i.e., the energy stored battery of electric vehicle passes through DC bus
11 and two-way AC/DC converting means 20, feed back to power grid 12.
Present embodiment is applied to battery and power grid carries out energy exchange or V2G is applied.
Embodiment 2:
Such as attached drawing 3, photovoltaic array A is connected to DC bus, while high frequency by MPPT maximal power tracing converting means B
Two-way changing energy-storage system is isolated, multiple groups battery pack is accessed into DC bus, while DC bus is connected to electric vehicle charge port,
It charges to electric vehicle.
Above embodiment is a kind of photovoltaic energy storage charging system, and electric energy can be supplemented by photovoltaic array, is led to
Maximal power tracing is crossed to DC bus powered, gives DC charging equipment to power by bus, extra electric energy passes through energy-storage system
It is stored in battery pack.When not having solar energy or solar energy is inadequate, alternating current or battery power discharge are recycled, provides electricity to bus
Energy.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
The change or replacement expected without creative work, should be covered by the protection scope of the present invention.Therefore, of the invention
Protection scope should be determined by the scope of protection defined in the claims.
Claims (18)
1. a kind of energy storage charging system, it is characterised in that:
A: two-way DC/DC converting means and DC bus comprising high-frequency isolation transformation；Two-way the first tie point of DC/DC device
It is connected to energy storage device；Second tie point is connected to DC bus, and the electric energy of energy storage device is passed through high frequency by two-way DC/DC device
Two-way exchange is carried out with DC bus after isolated variable；
B: AC/DC converting means and DC bus comprising high-frequency isolation transformation；The first tie point of AC/DC device is connected to friendship
Galvanic electricity net；Second tie point is connected to DC bus, and AC/DC device is by power grid electric energy to direct current mother after high-frequency isolation converts
Line carries out electric energy supplement；
C: comprising the device to charge to electric vehicle, DC bus, the second tie point are electricity to first tie point of device thus
Motor-car charging port, according to electric vehicle demand voltage and electric current, the charging current of the dynamic regulation busbar voltage and electric vehicle.
2. energy storage charging system as described in claim 1, it is characterised in that: the two-way DC/DC comprising high-frequency isolation transformation becomes
Changing device includes first order transformation, high-frequency isolation transformer, second level transformation, first order transformation connection energy storage device, the second level
Transformation connection DC bus, high-frequency isolation transformer connect first order transformation and second level transformation.
3. energy storage charging system as described in claim 1, it is characterised in that: there are two the two-way DC/DC transformation tools of high-frequency isolation
Direction transformation, first direction transformation: the direct current energy of energy-storage units becomes high-frequency electrical energy by the first order, by described
The transformation of high-frequency isolation transformer is transformed to the high-frequency electrical energy of different voltages, becomes direct current by the second level, is output to straight
Flow bus；
Second direction transformation: DC bus converts input direct-current electric energy to the second level, becomes high-frequency electrical energy by the second level,
The high-frequency electrical energy for becoming different voltages by high-frequency isolation transformer becomes direct current energy, input energy storage dress from the first order
It sets.
4. energy storage charging system as described in claim 1, it is characterised in that: the electric energy of high-frequency isolation transformer two sides passes through height
The isolation of frequency isolating transformer, two sides electric conductor are not connected directly；High-frequency electrical energy is transferred to the other side from side by electromagnetic induction.
5. energy storage charging system as described in claim 1, it is characterised in that: two-way DC/DC converting means becomes comprising DC/DC
Control unit is changed, DC/DC control unit internally controls first order transformation, second level transformation, high-frequency isolation transformer work, externally
With one or more communication bus: the first communication bus connection system master unit, the second communication bus can be direct
Energy storage device is connected, or is not connected to, is that energy storage device is connected directly to system master unit, passes through system control unit
It is communicated with the DC/DC, to control the charge or discharge to energy storage device.
6. energy storage charging system as described in claim 1, it is characterised in that: DC/DC converting means control unit is according to first
The information for the energy storage that communication of the communication bus with energy storage device obtains, the second communication bus obtain energy-storage system control and require letter
Breath, and the DC bus-bar voltage information acquired by internal sample circuit, control the transformation of two-way DC/DC converting means
Direction, transform power and transformation energy.
7. energy storage charging system as described in claim 1, it is characterised in that: DC/DC converting means control unit is according to second
The information for the energy storage that communication of the communication bus with energy storage device obtains, and it is female by the direct current that internal sample circuit acquires
Line information, while according to current electric vehicle charge requirement and current electric grid situation, control the two-way DC/DC converting means
Change direction, transform power；
Alternatively, DC/DC converting means control unit accepts master control order according to the first communication bus and system master unit communication
Adjust the changing direction of two-way DC/DC converting means, transform power, the energy storage that system master passes through and energy storage device communication obtains
Information, it is comprehensive to show that reasonable two-way DC/DC becomes and according to current electric vehicle charge requirement and current electric grid situation
The changing direction of changing device, transform power.
8. energy storage charging system as described in claim 1, it is characterised in that: DC bus includes that positive electrode bus and cathode are female
Line, positive and negative anodes bus is connected respectively to the two-way DC/DC converting means of high-frequency isolation described in one or more, while passing through input
Access point is exported, other devices are connected to.
9. energy storage charging system as described in claim 1, it is characterised in that: energy storage device is by DC bus and by two-way
DCDC, inputs and stores the electric energy of bus, or releases the electric energy of storage to bus, electric in the input/output procedure of electric energy
The voltage and current of energy is varied；Alternatively, two-way DC/DC converting means, connects a variety of energy storage devices, different types of energy storage
Device or multiple identical energy storage devices are connected to the same bus by the connection two-way DC/DC converting means, into
The exchange of row electric energy.
10. energy storage charging system as described in claim 1, it is characterised in that: the different energy storage devices of DC bus are connected to,
The first and second power differences changed direction, the power of transformation receive the control of system control main control unit, system master unit root
It changes direction according to first the characteristic of the power requirement and energy storage device changed direction with second, according to preset optimal
Control mode control transform power.
11. energy storage charging system as described in claim 1, it is characterised in that: the AC/DC comprising high-frequency isolation transformation converts dress
It sets including first order transformation, high-frequency isolation transformer, second level transformation, first order transformation connection AC network, second level transformation
DC bus is connected, high-frequency isolation transformer connects first order transformation and second level transformation.
12. energy storage charging system as described in claim 1, it is characterised in that: the electric energy of high-frequency isolation transformer two sides passes through
High-frequency isolation transformer isolation, two sides electric conductor are not connected directly；High-frequency electrical energy is transferred to by electromagnetic induction from side another
Side.
13. energy storage charging system as described in claim 1, it is characterised in that: AC/DC converting means includes AC/DC transformation control
Unit processed, AC/DC control unit internally control first order transformation, second level transformation, high-frequency isolation transformer work, externally have
Communication bus: communication bus connects system master unit, is communicated by system master unit with the AC/DC, to control from power grid
Electric energy conversion to DC bus.
14. energy storage charging system as described in claim 1, it is characterised in that: system master is obtained current electronic by communication
Vehicle charge requirement, the information of energy storage device and current electric grid situation net interior other charging system working conditions, control the AC/
The transform power of DC converting means meets optimal power conversion value.
15. energy storage charging system as described in claim 1, it is characterised in that: DC bus includes that positive electrode bus and cathode are female
Line, positive and negative anodes bus is connected respectively to high-frequency isolation AC/DC converting means described in one or more, while passing through input and output
Access point is connected to other devices.
16. energy storage charging system as described in claim 1, it is characterised in that: be connected to the AC/DC device of DC bus, become
The power changed receives the control of system master unit, and system master unit is according to the charge requirement of current electric vehicle, current electric grid
The characteristic of remaining charging equipment power demand conditions and energy storage device in power and expense situation, current electric grid, according to preparatory
The optimal control mode of setting controls transform power.
17. energy storage charging system as described in claim 1, it is characterised in that: comprising the related device that charges to electric vehicle and
Logic, charging interface quantity be more than one, between the different DC bus that each charge port is connected carry out power adjustment and
Switching, system master is according to the charge requirement of electric vehicle, by AC/DC, the control of two-way DC/DC, to reach to direct current mother
The voltage and current of line controls.
18. energy storage charging system as described in claim 1, it is characterised in that: system master is single integrated one integrated
More control units of formula master control or layer architecture combine the collecting and distributing type master control of composition.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910307939.5A CN109904909A (en) | 2019-04-17 | 2019-04-17 | A kind of energy storage charging system |
| PCT/CN2020/082282 WO2020211631A1 (en) | 2019-04-17 | 2020-03-31 | Energy storage charging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910307939.5A CN109904909A (en) | 2019-04-17 | 2019-04-17 | A kind of energy storage charging system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109904909A true CN109904909A (en) | 2019-06-18 |
Family
ID=66955950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910307939.5A Pending CN109904909A (en) | 2019-04-17 | 2019-04-17 | A kind of energy storage charging system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109904909A (en) |
| WO (1) | WO2020211631A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110450667A (en) * | 2019-07-29 | 2019-11-15 | 深圳英飞源技术有限公司 | A kind of energy storage charging pile |
| CN110729910A (en) * | 2019-11-26 | 2020-01-24 | 贵州电网物资有限公司 | Isolated bidirectional AC/DC converter suitable for V2G behaviors |
| WO2020211631A1 (en) * | 2019-04-17 | 2020-10-22 | 深圳英飞源技术有限公司 | Energy storage charging system |
| WO2021073049A1 (en) * | 2019-10-18 | 2021-04-22 | 深圳英飞源技术有限公司 | Centralized energy storage charging pile |
| CN113178912A (en) * | 2021-04-28 | 2021-07-27 | 华南理工大学 | Retired power battery charging and discharging system for energy storage power station and control method of retired power battery charging and discharging system |
| CN113794218A (en) * | 2021-10-13 | 2021-12-14 | 王勇 | Electric motor car decommissioning battery reutilization system based on buck-boost circuit |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070126377A1 (en) * | 2005-10-07 | 2007-06-07 | Alstom Transport Sa | Method and system for supplying electrical power to a supply bus for an electric vehicle, recording medium, and vehicle for this method |
| WO2008113242A1 (en) * | 2007-03-16 | 2008-09-25 | Huawei Technologies Co., Ltd. | A switched dc-dc conversion system for isolating high frequency and a method thereof |
| CN103929064A (en) * | 2014-03-24 | 2014-07-16 | 江苏固德威电源科技有限公司 | Isolated two-way DC/DC converter and control method thereof |
| KR20150025598A (en) * | 2013-08-29 | 2015-03-11 | 공주대학교 산학협력단 | An energy storage system using high frequency link type dc-dc converter |
| KR20150079256A (en) * | 2013-12-31 | 2015-07-08 | 공주대학교 산학협력단 | High reliabel battery energy storage system |
| CN107465205A (en) * | 2017-09-20 | 2017-12-12 | 重庆聚陆新能源有限公司 | A kind of direct current micro-grid system based on DC/DC converter time-sharing multiplexs |
| CN108631357A (en) * | 2018-04-03 | 2018-10-09 | 阳光电源股份有限公司 | A kind of mesohigh energy conversion system |
| CN108695874A (en) * | 2018-06-26 | 2018-10-23 | 易事特集团股份有限公司 | A kind of composite energy storage type bi-directional power conversion device |
| CN209545204U (en) * | 2019-04-17 | 2019-10-25 | 深圳英飞源技术有限公司 | A kind of energy storage charging system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109904909A (en) * | 2019-04-17 | 2019-06-18 | 深圳英飞源技术有限公司 | A kind of energy storage charging system |
-
2019
- 2019-04-17 CN CN201910307939.5A patent/CN109904909A/en active Pending
-
2020
- 2020-03-31 WO PCT/CN2020/082282 patent/WO2020211631A1/en active Application Filing
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070126377A1 (en) * | 2005-10-07 | 2007-06-07 | Alstom Transport Sa | Method and system for supplying electrical power to a supply bus for an electric vehicle, recording medium, and vehicle for this method |
| WO2008113242A1 (en) * | 2007-03-16 | 2008-09-25 | Huawei Technologies Co., Ltd. | A switched dc-dc conversion system for isolating high frequency and a method thereof |
| KR20150025598A (en) * | 2013-08-29 | 2015-03-11 | 공주대학교 산학협력단 | An energy storage system using high frequency link type dc-dc converter |
| KR20150079256A (en) * | 2013-12-31 | 2015-07-08 | 공주대학교 산학협력단 | High reliabel battery energy storage system |
| CN103929064A (en) * | 2014-03-24 | 2014-07-16 | 江苏固德威电源科技有限公司 | Isolated two-way DC/DC converter and control method thereof |
| CN107465205A (en) * | 2017-09-20 | 2017-12-12 | 重庆聚陆新能源有限公司 | A kind of direct current micro-grid system based on DC/DC converter time-sharing multiplexs |
| CN108631357A (en) * | 2018-04-03 | 2018-10-09 | 阳光电源股份有限公司 | A kind of mesohigh energy conversion system |
| CN108695874A (en) * | 2018-06-26 | 2018-10-23 | 易事特集团股份有限公司 | A kind of composite energy storage type bi-directional power conversion device |
| CN209545204U (en) * | 2019-04-17 | 2019-10-25 | 深圳英飞源技术有限公司 | A kind of energy storage charging system |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020211631A1 (en) * | 2019-04-17 | 2020-10-22 | 深圳英飞源技术有限公司 | Energy storage charging system |
| CN110450667A (en) * | 2019-07-29 | 2019-11-15 | 深圳英飞源技术有限公司 | A kind of energy storage charging pile |
| WO2021017508A1 (en) * | 2019-07-29 | 2021-02-04 | 深圳英飞源技术有限公司 | Energy storage charging pile |
| WO2021073049A1 (en) * | 2019-10-18 | 2021-04-22 | 深圳英飞源技术有限公司 | Centralized energy storage charging pile |
| CN110729910A (en) * | 2019-11-26 | 2020-01-24 | 贵州电网物资有限公司 | Isolated bidirectional AC/DC converter suitable for V2G behaviors |
| CN113178912A (en) * | 2021-04-28 | 2021-07-27 | 华南理工大学 | Retired power battery charging and discharging system for energy storage power station and control method of retired power battery charging and discharging system |
| CN113794218A (en) * | 2021-10-13 | 2021-12-14 | 王勇 | Electric motor car decommissioning battery reutilization system based on buck-boost circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020211631A1 (en) | 2020-10-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109904909A (en) | A kind of energy storage charging system | |
| CN106033904B (en) | The charging method of matrix form flexibility charging heap and dynamically distributes power | |
| CN109687722B (en) | Integrated multi-mode power converter for electric automobile and control method thereof | |
| US20220209545A1 (en) | Energy storage charging system | |
| CN102842731B (en) | Battery capacity grading and forming system | |
| CN209545204U (en) | A kind of energy storage charging system | |
| CN104218805B (en) | Unipolar-bipolar convertible direct-current converter | |
| US20220200314A1 (en) | Energy storage system | |
| CN110450667A (en) | A kind of energy storage charging pile | |
| CN205724930U (en) | A kind of mixing inverter system | |
| CN112671018A (en) | Station network interaction type optical storage and charging intelligent charging station based on direct-current micro-network and control method | |
| CN106230045A (en) | A kind of based on the two-way active equalization circuit synchronizing flyback DC/DC changer | |
| CN109249834A (en) | A kind of fast charge electric power station system | |
| CN108777479B (en) | DC bus micro-grid system | |
| CN110626203A (en) | Centralized energy storage charging pile | |
| CN202888862U (en) | Energy storage inverter suitable for distributed new energy power | |
| CN103117595A (en) | Distributed direct current independent power supply system | |
| CN209929995U (en) | Energy storage charging system | |
| CN109672260A (en) | A kind of energy-storage system of high-frequency isolation transformation | |
| CN209948772U (en) | High-frequency isolation and transformation energy storage system | |
| CN111478616A (en) | Subway traction power supply system and bidirectional converter device | |
| CN105652116A (en) | Back-to-back testing circuit based on DC/DC converter | |
| CN210309975U (en) | Energy storage charging pile | |
| CN106385193B (en) | The changeable low-voltage direct side topology of electric power electric transformer alternating current-direct current capacity | |
| CN203119615U (en) | Distributed direct-current independent power supply system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |