CN108039759A - A kind of lithium-ion battery systems multiplex mode high efficiency energy balanced device and its control method - Google Patents
A kind of lithium-ion battery systems multiplex mode high efficiency energy balanced device and its control method Download PDFInfo
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- CN108039759A CN108039759A CN201810003626.6A CN201810003626A CN108039759A CN 108039759 A CN108039759 A CN 108039759A CN 201810003626 A CN201810003626 A CN 201810003626A CN 108039759 A CN108039759 A CN 108039759A
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000011159 matrix material Substances 0.000 claims abstract description 101
- 239000000203 mixture Substances 0.000 claims abstract description 28
- 238000004804 winding Methods 0.000 claims description 20
- 230000005611 electricity Effects 0.000 claims description 11
- 238000004146 energy storage Methods 0.000 claims description 11
- 239000000178 monomer Substances 0.000 claims description 7
- 230000003068 static effect Effects 0.000 claims description 4
- 238000002955 isolation Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
- B60L58/22—Balancing the charge of battery modules
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M10/4264—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing with capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/46—Accumulators structurally combined with charging apparatus
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using 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
- Y02T10/70—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
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
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- Engineering & Computer Science (AREA)
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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention relates to a kind of lithium-ion battery systems multiplex mode high efficiency energy balanced device and its control method, balanced device of the present invention is by N number of gating switch matrix, N number of inductance, N+1 the master switch Mk with anti-paralleled diode Dk, a flyback transformer T, N+1 capacitance Ck, a voltage source E and N*m battery unit Bij and cell balancing modules A ij compositions；Wherein gating switch matrix is made of upper bridge arm bilayer power switch matrix H, lower bridge arm bilayer power switch matrix S, each cell balancing modules A ij is made of two power switch and an inductance L, double-deck power switch matrixes of upper bridge arm power switch matrix H and lower bridge arm power switch the matrix S to be made of m to the power switch of differential concatenation.The present invention can realize the electrical isolation of battery pack, prevent influencing each other between different battery packs, the medium changed using flyback transformer as energy, and volume and the topological circuit principle for reducing balanced device are simple.
Description
Technical field
The present invention relates to a kind of lithium-ion battery systems multiplex mode high efficiency energy balanced device and its control method, belongs to electricity
Power electronic technology and battery energy equalization technique field.
Background technology
With the aggravation of environmental problem and energy crisis, green and environmental protection are widely paid close attention to, and each state all advocates development
Green energy resource, reduces the use of fossil fuel.As a kind of new energy vehicles, electric automobile has received widespread attention,
It develops into inexorable trend.Since lithium ion battery has small, energy density is high and memory-less effect is so as in electricity
Electrical automobile field is widely used.But the rated voltage of lithium ion battery is relatively low, in order to meet the requirement of voltage, it is necessary to
Substantial amounts of lithium ion battery is together in series use.During the use of storage battery group, due to the difference of battery in itself and make
With the difference of environment lithium ion battery energy can be caused inconsistent, so that overcharging and putting excessively for lithium ion battery can be caused, and then
Cause scrapping in advance for storage battery group.In order to solve the problems, such as that battery energy is inconsistent, it is necessary to take effective scheme pair
Storage battery group carries out balancing energy.
At present, there are a variety of storage battery group equalization schemes, including passive balanced and active equalization, passive equilibrium mainly passes through
The unnecessary energy of storage battery is subjected to consumption so as to achieve the purpose that equilibrium by resistance, such a equalization scheme energy loss is tight
Weight.The unnecessary energy of storage battery is mainly carried out transfer so as to achieve the purpose that equilibrium by active equalization, and equalization efficiency is higher simultaneously
And energy loss is smaller.The equalization efficiency of existing equalization scheme is generally relatively low, and largely uses switching device, switching frequency
Height, energy loss are serious.
The limitation of battery equalisation technology, which result in electric automobile, widely to be developed, and its is expensive, because
This, the application of electric automobile becomes highly difficult, in order to improve equalization efficiency and reduce energy loss, solves Development of Electric Vehicles
Limitation problem, it is necessary to seek a kind of efficient equalization scheme.The high actual effect balanced device of lithium-ions battery group is studied, solves to be connected into
Energy inconsistence problems between the lithium ion single battery of group, the charge/discharge capacity for improving lithium-ions battery group, extend
Its service life cycle, promotes new energy lithium ion battery energy storage system and New-energy electric vehicle development to have extremely important meaning
Justice, while the sustainable development to promoting human society has very important social value and realistic meaning.
The content of the invention
For largely being gone here and there in extensive lithium ion battery energy storage system and the vehicle-mounted lithium-ion power battery system of electric automobile
Energy inconsistence problems between connection lithium ion single battery, the present invention provides a kind of lithium-ion battery systems multiplex mode is high-effect
Measure balanced device and its control method.
The technical scheme is that：A kind of lithium-ion battery systems multiplex mode high efficiency energy balanced device, for N*m
The battery system that N number of battery pack of battery unit Bij compositions is formed, balanced device is by N number of gating switch matrix, N number of inductance, N+1
A master switch Mk with anti-paralleled diode Dk, flyback transformer a T, N+1 capacitance Ck, a voltage source E and
N*m battery unit Bij and cell balancing modules A ij compositions；Wherein gating switch matrix is opened by upper bridge arm bilayer power
Matrix H, lower bridge arm bilayer power switch matrix S compositions are closed, each cell balancing modules A ij is by two power switch and one
A inductance L is formed, and upper bridge arm power switch matrix H and lower bridge arm power switch matrix S is that the power of differential concatenation is opened by m
Close the double-deck power switch matrix of composition；
The upper end of m, the upper strata power switch of the upper bridge arm of N number of gating switch matrix draw N bars lead respectively with master
Control switch M1, M2 ..., one end of MN be connected, master switch M1, M2 ..., the other end of MN and flyback transformer T primary sides
Upper end be connected；Draw N bar leads and be connected to one in the lower end of m power switch of lower floor of the lower bridge arm of N number of gating switch matrix
Rise, the lower end with flyback transformer T primary sides is connected jointly；Capacitance C1, C2 ..., the cathode of CN it is upper with upper bridge arm respectively
End lead-out wire is connected, and anode is connected with the lower end lead-out wire of lower bridge arm respectively；One end of master switch M0 and flyback transformer T
Secondary side upper end be connected, the other end is connected with the cathode of voltage source E；The anode of voltage source E and flyback transformer T secondary sides
Lower end be connected, the cathode and anode of capacitance C0 are connected with the cathode and anode of voltage source E respectively；In each battery unit Bij
Two series connection monomer battery lead 3 lead-out wires respectively with corresponding cell balancing mould two power switch in the block
It is connected with one end of an inductance L, the other end of two power switch and an inductance L link together；
Wherein, k=0,1,2 ..., N；I=1,2 ... N；J=1,2 ... m.
Power switch, cell balancing mould power switch Q in the block, master switch M in the gating switch matrix
It is inverse conductivity type device for power switching.
Double-deck power switch XH1j of the upper bridge arm power switch matrix H of the gating switch matrix X by m to differential concatenation
Formed with XH2j；Double-deck power switch of the lower bridge arm power switch matrix S of the gating switch matrix X by m to differential concatenation
XS1j and XS2j compositions；Wherein, X=1,2 ... N；J=1,2 ... m.
The voltage source E is provided by battery system by the storage battery group beyond DC/DC offers or battery system.
The primary side of the flyback transformer is Multiple coil, each battery pack corresponds to a winding, and secondary side is
Simplex winding.
A kind of control method of lithium-ion battery systems multiplex mode high efficiency energy balanced device,
When battery system is in charged state, the highest battery unit of energy is put by equilibrium at the same time in each battery pack
Electricity；When battery system is in discharge condition, the battery unit of minimum energy is by equalizaing charge at the same time in each battery pack；Work as electricity
When cell system is in static condition, each cell balancing module realizes the balancing energy between two single batteries.
In the charge and discharge equilibrium of battery pack, the equilibrium of energy can be carried out to one of them or several battery packs.
When battery system is in charged state, the highest electricity of energy in each battery pack is gated by gating switch matrix
Pool unit, then to master switch M1, M2 ..., MN carry out PWM controls, the highest battery of N number of energy from N number of battery pack
Unit is carried out at the same time balanced discharge as the power supply of flyback transformer primary side；
When master switch is in opening state, the primary side of energy storage in battery unit in flyback transformer T
In winding, when master switch M1, M2 ..., MN be off when, be stored in the energy in flyback transformer T through M0's
Anti-paralleled diode is transferred in voltage source E；In charge balancing, the energy that the high battery unit of energy is released is more.
When battery system is in discharge condition, the electricity of minimum energy in each battery pack is gated by gating switch matrix
Pool unit, then carries out master switch M0 PWM controls, power supplys of the voltage source E as flyback transformer T secondary sides, then come
Equalizaing charge is carried out at the same time from the battery unit of N number of minimum energy of N number of battery pack；
When master switch M0 is in opening state, the secondary side of energy storage in voltage source E in flyback transformer T
In winding, when master switch M0 is closed, the corresponding battery into battery pack of the energy transfer in flyback transformer T is stored in
In unit；In equalization discharge, the energy that the low battery unit of energy is electrically charged is more.
When battery system is in static condition, by cell balancing module, two are realized in each battery unit
Balancing energy between series connection single battery；By the control to respective switch Q in equilibrium, make the energy between two single batteries
Amount is shifted by inductance, and the high single battery of energy is the low charging of energy.
The beneficial effects of the invention are as follows：The present invention can realize the electrical isolation of battery pack, prevent between different battery packs
Influence each other, the medium changed using flyback transformer as energy, volume and the topological circuit for reducing balanced device be former
Reason is simple.The present invention introduces double balancing energy strategy, balanced energy transfer effect by a battery unit of two batteries
Rate is high, balancing speed is fast, strong to the control ability of euqalizing current, is realizing per balancing energy between each battery unit in Battery pack group
While, also achieve the balancing energy between different battery packs and between the battery unit of different battery packs.
Brief description of the drawings
Fig. 1 is topological circuit schematic diagram of the present invention；
Equivalent circuit diagram when Fig. 2 is battery system charge balancing；
Equivalent circuit diagram when Fig. 3 is battery system equalization discharge；
Fig. 4 is battery unit equalizing circuit figure when battery system stands balanced.
Embodiment
Embodiment 1：As shown in Figs 1-4, a kind of lithium-ion battery systems multiplex mode high efficiency energy balanced device, for N*m
The battery system that N number of battery pack of a battery unit Bij compositions is formed, balanced device is by N number of gating switch matrix, N number of inductance, N+
1 master switch Mk with anti-paralleled diode Dk, flyback transformer a T, N+1 capacitance Ck, a voltage source E, with
And N*m battery unit Bij and cell balancing modules A ij compositions；Wherein gating switch matrix is by upper bridge arm bilayer power
Switch matrix H, lower bridge arm bilayer power switch matrix S are formed, each cell balancing modules A ij by two power switch and
One inductance L is formed, and upper bridge arm power switch matrix H and lower bridge arm power switch matrix S is the power by m to differential concatenation
Switch the double-deck power switch matrix of composition；The upper end of m, the upper strata power switch of the upper bridge arm of N number of gating switch matrix
Draw N bars leads respectively with master switch M1, M2 ..., one end of MN be connected, master switch M1, M2 ..., the other end of MN with
The upper end of flyback transformer T primary sides is connected；The lower end of m power switch of lower floor of the lower bridge arm of N number of gating switch matrix
Draw N bar leads to link together, the lower end with flyback transformer T primary sides is connected jointly；Capacitance C1, C2 ..., CN just
Pole is connected with the upper end lead-out wire of upper bridge arm respectively, and anode is connected with the lower end lead-out wire of lower bridge arm respectively；Master switch M0's
One end is connected with the secondary side upper end of flyback transformer T, and the other end is connected with the cathode of voltage source E；The anode of voltage source E with
The lower end of flyback transformer T secondary sides is connected, the cathode and anode of capacitance the C0 cathode and anode phase with voltage source E respectively
Even；3 lead-out wires of two series connection monomer battery leads in each battery unit Bij respectively with corresponding cell balancing
One end of mould two power switch in the block and an inductance L are connected, the other end connection of two power switch and an inductance L
Together；Wherein, k=0,1,2 ..., N；I=1,2 ... N；J=1,2 ... m.
It is possible to further set power switch, the cell balancing mould work(in the block in the gating switch matrix
Rate switch Q, master switch M are inverse conductivity type device for power switching.
It is possible to further set the upper bridge arm power switch matrix H of the gating switch matrix X by m to differential concatenation
Double-deck power switch XH1j and XH2j composition；The lower bridge arm power switch matrix S of the gating switch matrix X is by m to reverse
Double-deck power switch XS1j and the XS2j composition of series connection；Wherein, X=1,2 ... N；J=1,2 ... m.
It is possible to further set the voltage source E to be provided by DC/DC by battery system, (or voltage source E is by battery
Storage battery group beyond system provides).
It is Multiple coil it is possible to further set the primary side of the flyback transformer, each battery pack corresponds to
One winding, secondary side are simplex winding.
A kind of control method of lithium-ion battery systems multiplex mode high efficiency energy balanced device, when battery system is in charging
During state, the highest battery unit of energy in each battery pack is gated by gating switch matrix, then to master switch M1,
M2 ..., MN carry out PWM controls, then the highest battery unit of N number of energy from N number of battery pack is as flyback transformer one
The power supply of secondary side carries out balanced discharge.
By taking the equilibrium of two Battery packs as an example, as shown in Fig. 2, when battery system is in charged state, it is assumed that two battery packs
The middle highest battery unit of energy is respectively B11, B22.When balanced, first by gating switch matrix gate battery unit B11,
B22, i.e., controlling switch 1H11,1S11,2H12 and 2S12 is in the conduction state respectively.Made by balanced battery unit B11, B22
Balanced discharge is carried out for the power supply of flyback transformer primary side.When balanced, carry out PWM controls to master switch M1 and M2, then 2
A battery unit passes through flyback transformer balanced discharge.When M1 and M2 are on, the energy storage from battery unit
In the first side winding of transformer, when M1 and M2 is turned off, anti-paralleled diode of the energy in transformer through M0 is stored in
It is transferred in voltage source E.By the balance policy under battery system charged state, make the highest battery of energy in each battery pack
Unit while balanced discharge, on the one hand improve each battery pack and the charging capacity of whole battery system, on the other hand also make electricity
The energy between the highest single battery of energy from different battery packs in cell system is equalized.
Embodiment 2：As shown in Figs 1-4, a kind of lithium-ion battery systems multiplex mode high efficiency energy balanced device, for N*m
The battery system that N number of battery pack of a battery unit Bij compositions is formed, balanced device is by N number of gating switch matrix, N number of inductance, N+
1 master switch Mk with anti-paralleled diode Dk, flyback transformer a T, N+1 capacitance Ck, a voltage source E, with
And N*m battery unit Bij and cell balancing modules A ij compositions；Wherein gating switch matrix is by upper bridge arm bilayer power
Switch matrix H, lower bridge arm bilayer power switch matrix S are formed, each cell balancing modules A ij by two power switch and
One inductance L is formed, and upper bridge arm power switch matrix H and lower bridge arm power switch matrix S is the power by m to differential concatenation
Switch the double-deck power switch matrix of composition；The upper end of m, the upper strata power switch of the upper bridge arm of N number of gating switch matrix
Draw N bars leads respectively with master switch M1, M2 ..., one end of MN be connected, master switch M1, M2 ..., the other end of MN with
The upper end of flyback transformer T primary sides is connected；The lower end of m power switch of lower floor of the lower bridge arm of N number of gating switch matrix
Draw N bar leads to link together, the lower end with flyback transformer T primary sides is connected jointly；Capacitance C1, C2 ..., CN just
Pole is connected with the upper end lead-out wire of upper bridge arm respectively, and anode is connected with the lower end lead-out wire of lower bridge arm respectively；Master switch M0's
One end is connected with the secondary side upper end of flyback transformer T, and the other end is connected with the cathode of voltage source E；The anode of voltage source E with
The lower end of flyback transformer T secondary sides is connected, the cathode and anode of capacitance the C0 cathode and anode phase with voltage source E respectively
Even；3 lead-out wires of two series connection monomer battery leads in each battery unit Bij respectively with corresponding cell balancing
One end of mould two power switch in the block and an inductance L are connected, the other end connection of two power switch and an inductance L
Together；Wherein, k=0,1,2 ..., N；I=1,2 ... N；J=1,2 ... m.
It is possible to further set power switch, the cell balancing mould work(in the block in the gating switch matrix
Rate switch Q, master switch M are inverse conductivity type device for power switching.
It is possible to further set the upper bridge arm power switch matrix H of the gating switch matrix X by m to differential concatenation
Double-deck power switch XH1j and XH2j composition；The lower bridge arm power switch matrix S of the gating switch matrix X is by m to reverse
Double-deck power switch XS1j and the XS2j composition of series connection；Wherein, X=1,2 ... N；J=1,2 ... m.
It is possible to further set the voltage source E to provide (or voltage source E by the storage battery group beyond battery system
There is provided by battery system by DC/DC).
It is Multiple coil it is possible to further set the primary side of the flyback transformer, each battery pack corresponds to
One winding, secondary side are simplex winding.
A kind of control method of lithium-ion battery systems multiplex mode high efficiency energy balanced device, when battery system is in electric discharge
During state, the battery unit of minimum energy in each battery pack is gated by gating switch matrix, then to master switch M0 into
Row PWM is controlled, the output terminal of the battery unit of N number of minimum energy from N number of battery pack as flyback transformer primary side
It is carried out at the same time equalizaing charge.
By taking the equilibrium of two Battery packs as an example, as shown in figure 3, when battery system is in discharge condition, it is assumed that two battery packs
The battery unit of middle minimum energy is respectively B12, B21.When balanced, first by gating switch matrix gate battery unit B12,
B21, i.e., controlling switch 1H22,1S22,2H21 and 2S21 is in the conduction state respectively.Made by balanced battery unit B12, B21
For flyback transformer primary side output by carry out equalizaing charge.When balanced, to master switch M0 carry out PWM controls, then 2
Battery unit is by flyback transformer by equalizaing charge.When M0 is on, the energy storage from voltage source is in transformation
In the secondary side winding of device, when M0 is turned off, anti-paralleled diode of the energy through M1 and M2 being stored in transformer is transferred to
In battery unit B12 and B21.By the balance policy under battery system discharge condition, make minimum energy in each battery pack
Battery unit equalizaing charge at the same time, on the one hand improves each battery pack and the discharge capacity of whole battery system, on the other hand
It is equalized the energy between the single battery of the minimum energy from different battery packs in battery system.
Embodiment 3：As shown in Figs 1-4, a kind of lithium-ion battery systems multiplex mode high efficiency energy balanced device, for N*m
The battery system that N number of battery pack of a battery unit Bij compositions is formed, balanced device is by N number of gating switch matrix, N number of inductance, N+
1 master switch Mk with anti-paralleled diode Dk, flyback transformer a T, N+1 capacitance Ck, a voltage source E, with
And N*m battery unit Bij and cell balancing modules A ij compositions；Wherein gating switch matrix is by upper bridge arm bilayer power
Switch matrix H, lower bridge arm bilayer power switch matrix S are formed, each cell balancing modules A ij by two power switch and
One inductance L is formed, and upper bridge arm power switch matrix H and lower bridge arm power switch matrix S is the power by m to differential concatenation
Switch the double-deck power switch matrix of composition；The upper end of m, the upper strata power switch of the upper bridge arm of N number of gating switch matrix
Draw N bars leads respectively with master switch M1, M2 ..., one end of MN be connected, master switch M1, M2 ..., the other end of MN with
The upper end of flyback transformer T primary sides is connected；The lower end of m power switch of lower floor of the lower bridge arm of N number of gating switch matrix
Draw N bar leads to link together, the lower end with flyback transformer T primary sides is connected jointly；Capacitance C1, C2 ..., CN just
Pole is connected with the upper end lead-out wire of upper bridge arm respectively, and anode is connected with the lower end lead-out wire of lower bridge arm respectively；Master switch M0's
One end is connected with the secondary side upper end of flyback transformer T, and the other end is connected with the cathode of voltage source E；The anode of voltage source E with
The lower end of flyback transformer T secondary sides is connected, the cathode and anode of capacitance the C0 cathode and anode phase with voltage source E respectively
Even；3 lead-out wires of two series connection monomer battery leads in each battery unit Bij respectively with corresponding cell balancing
One end of mould two power switch in the block and an inductance L are connected, the other end connection of two power switch and an inductance L
Together；Wherein, k=0,1,2 ..., N；I=1,2 ... N；J=1,2 ... m.
It is possible to further set power switch, the cell balancing mould work(in the block in the gating switch matrix
Rate switch Q, master switch M are inverse conductivity type device for power switching.
It is possible to further set the upper bridge arm power switch matrix H of the gating switch matrix X by m to differential concatenation
Double-deck power switch XH1j and XH2j composition；The lower bridge arm power switch matrix S of the gating switch matrix X is by m to reverse
Double-deck power switch XS1j and the XS2j composition of series connection；Wherein, X=1,2 ... N；J=1,2 ... m.
It is possible to further set the voltage source E to provide (or voltage source E by the storage battery group beyond battery system
There is provided by battery system by DC/DC).
It is Multiple coil it is possible to further set the primary side of the flyback transformer, each battery pack corresponds to
One winding, secondary side are simplex winding.
A kind of control method of lithium-ion battery systems multiplex mode high efficiency energy balanced device, battery system, which is in, stands shape
During state, by cell balancing module, the balancing energy between two series connection single batteries in each battery unit is realized, etc.
The equalizing circuit of effect is typical stepping-up/stepping-down chopper circuit.
As shown in figure 4, by taking battery unit B11 as an example, it is assumed that in battery unit B11, single battery Cell11 energy is high.
During weighing apparatus, PWM controls are carried out to the switch 1Q1 in balance module A11：When switching 1Q1 conductings, 1. circuit is activated, monomer electricity
Pond Cell11 discharges, inductance L energy storage；When 1Q1 is turned off, 2. circuit is activated, and the energy in inductance L turns to single battery Cell12
Move.When similarly carrying out PWM controls to switch 1Q2, energy will be shifted from single battery Cell12 to single battery Cell11.Battery
Other cell balancing module (Aij, i=1,2 ..., N, j=1,2 ..., m) balancing principles are same as above in system.
Embodiment 4：As shown in Figs 1-4, a kind of lithium-ion battery systems multiplex mode high efficiency energy balanced device, for N*m
The battery system that N number of battery pack of a battery unit Bij compositions is formed, balanced device is by N number of gating switch matrix, N number of inductance, N+
1 master switch Mk with anti-paralleled diode Dk, flyback transformer a T, N+1 capacitance Ck, a voltage source E, with
And N*m battery unit Bij and cell balancing modules A ij compositions；Wherein gating switch matrix is by upper bridge arm bilayer power
Switch matrix H, lower bridge arm bilayer power switch matrix S are formed, each cell balancing modules A ij by two power switch and
One inductance L is formed, and upper bridge arm power switch matrix H and lower bridge arm power switch matrix S is the power by m to differential concatenation
Switch the double-deck power switch matrix of composition；The upper end of m, the upper strata power switch of the upper bridge arm of N number of gating switch matrix
Draw N bars leads respectively with master switch M1, M2 ..., one end of MN be connected, master switch M1, M2 ..., the other end of MN with
The upper end of flyback transformer T primary sides is connected；The lower end of m power switch of lower floor of the lower bridge arm of N number of gating switch matrix
Draw N bar leads to link together, the lower end with flyback transformer T primary sides is connected jointly；Capacitance C1, C2 ..., CN just
Pole is connected with the upper end lead-out wire of upper bridge arm respectively, and anode is connected with the lower end lead-out wire of lower bridge arm respectively；Master switch M0's
One end is connected with the secondary side upper end of flyback transformer T, and the other end is connected with the cathode of voltage source E；The anode of voltage source E with
The lower end of flyback transformer T secondary sides is connected, the cathode and anode of capacitance the C0 cathode and anode phase with voltage source E respectively
Even；3 lead-out wires of two series connection monomer battery leads in each battery unit Bij respectively with corresponding cell balancing
One end of mould two power switch in the block and an inductance L are connected, the other end connection of two power switch and an inductance L
Together；Wherein, k=0,1,2 ..., N；I=1,2 ... N；J=1,2 ... m.
It is possible to further set power switch, the cell balancing mould work(in the block in the gating switch matrix
Rate switch Q, master switch M are inverse conductivity type device for power switching.
It is possible to further set the upper bridge arm power switch matrix H of the gating switch matrix X by m to differential concatenation
Double-deck power switch XH1j and XH2j composition；The lower bridge arm power switch matrix S of the gating switch matrix X is by m to reverse
Double-deck power switch XS1j and the XS2j composition of series connection；Wherein, X=1,2 ... N；J=1,2 ... m.
It is possible to further set the voltage source E to be passed through by battery system beyond DC/DC offers or battery system
Storage battery group provides.
It is Multiple coil it is possible to further set the primary side of the flyback transformer, each battery pack corresponds to
One winding, secondary side are simplex winding.
A kind of control method of lithium-ion battery systems multiplex mode high efficiency energy balanced device, when battery pack be in charging or
During discharge condition, if only had, the energy of some or several battery packs is inconsistent, can be only to this one or several battery pack
Carry out balanced.In equilibrium, the equilibrium of corresponding matrix switch and master switch so as to fulfill energy is controlled.
It is possible to further set when battery system is in charged state, each electricity is gated by gating switch matrix
The highest battery unit of energy in the group of pond, then to master switch M1, M2 ..., MN carry out PWM controls, from N number of battery pack
N number of highest battery unit of energy is carried out at the same time balanced discharge as the power supply of flyback transformer primary side；Work as master switch
During in opening state, the energy storage in battery unit works as master switch in the first side winding of flyback transformer T
M1, M2 ..., MN is when being off, anti-paralleled diode of the energy through M0 being stored in flyback transformer T is transferred to
In voltage source E；In charge balancing, the energy that the high battery unit of energy is released is more.
It is possible to further set when battery system is in discharge condition, each electricity is gated by gating switch matrix
The battery unit of minimum energy in the group of pond, then carries out PWM controls, voltage source E is as flyback transformer T to master switch M0
The power supply of secondary side, then the battery unit of N number of minimum energy from N number of battery pack be carried out at the same time equalizaing charge；Work as master control
When switch M0 is in opening state, the energy storage in voltage source E works as master control in the secondary side winding of flyback transformer T
When switching M0 and closing, the energy transfer in flyback transformer T is stored in into battery pack in corresponding battery unit；Discharging
In equilibrium, the energy that the low battery unit of energy is electrically charged is more.
The embodiment of the present invention is explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned
Embodiment, within the knowledge of a person skilled in the art, can also be before present inventive concept not be departed from
Put that various changes can be made.
Claims (10)
- A kind of 1. lithium-ion battery systems multiplex mode high efficiency energy balanced device, it is characterised in that：For N*m battery unit The battery system that N number of battery pack of Bij compositions is formed, balanced device are anti-simultaneously by N number of gating switch matrix, N number of inductance, N+1 band The master switch Mk of union II pole pipe Dk, flyback transformer a T, N+1 capacitance Ck, a voltage source E and N*m electricity Pool unit Bij and cell balancing modules A ij compositions；Wherein gating switch matrix by upper bridge arm bilayer power switch matrix H, Lower bridge arm bilayer power switch matrix S is formed, and each cell balancing modules A ij is by two power switch and an inductance L Form, upper bridge arm power switch matrix H and lower bridge arm power switch matrix S is that the power switch of differential concatenation is made of m Double-deck power switch matrix；Draw N bar leads and opened respectively with master control in the upper end of m, the upper strata power switch of the upper bridge arm of N number of gating switch matrix Close M1, M2 ..., one end of MN be connected, master switch M1, M2 ..., the other end of MN it is upper with flyback transformer T primary sides End is connected；The lower end of m power switch of lower floor of the lower bridge arm of N number of gating switch matrix draws N bar leads and links together, altogether It is connected with the lower end with flyback transformer T primary sides；Capacitance C1, C2 ..., the upper end of the cathode of CN respectively with upper bridge arm draws Line is connected, and anode is connected with the lower end lead-out wire of lower bridge arm respectively；One end of master switch M0 is secondary with flyback transformer T's Side upper end is connected, and the other end is connected with the cathode of voltage source E；The anode of voltage source E and the lower end of flyback transformer T secondary sides It is connected, the cathode and anode of capacitance C0 are connected with the cathode and anode of voltage source E respectively；Two in each battery unit Bij Connect 3 lead-out wires two power switch in the block with corresponding cell balancing mould and one respectively of monomer battery lead One end of inductance L is connected, and the other end of two power switch and an inductance L link together；Wherein, k=0,1,2 ..., N；I=1,2 ... N；J=1,2 ... m.
- 2. lithium-ion battery systems multiplex mode high efficiency energy balanced device according to claim 1, it is characterised in that：It is described Power switch, cell balancing mould power switch Q in the block, master switch M in gating switch matrix are inverse conductivity type work( Rate switching device.
- 3. lithium-ion battery systems multiplex mode high efficiency energy balanced device according to claim 1, it is characterised in that：It is described The upper bridge arm power switch matrix H of gating switch matrix X is made of the double-deck power switch XH1j and XH2j of differential concatenation m； Double-deck power switch XS1js and XS2j group of the lower bridge arm power switch matrix S of the gating switch matrix X by m to differential concatenation Into；Wherein, X=1,2 ... N；J=1,2 ... m.
- 4. lithium-ion battery systems multiplex mode high efficiency energy balanced device according to claim 1, it is characterised in that：It is described Voltage source E is provided by battery system by the storage battery group beyond DC/DC offers or battery system.
- 5. lithium-ion battery systems multiplex mode high efficiency energy balanced device according to claim 1, it is characterised in that：It is described The primary side of flyback transformer be Multiple coil, each battery pack corresponds to a winding, and secondary side is simplex winding.
- 6. a kind of control lithium-ion battery systems multiplex mode high efficiency energy balanced device any one of claim 1-5 Method, it is characterised in that：When battery system is in charged state, the highest battery unit of energy is by balanced discharge at the same time in each battery pack；When When battery system is in discharge condition, the battery unit of minimum energy is by equalizaing charge at the same time in each battery pack；When battery system When system is in static condition, each cell balancing module realizes the balancing energy between two single batteries.
- 7. according to the method described in claim 6, it is characterized in that：, can be to one of them in the charge and discharge equilibrium of battery pack Or several battery packs carry out the equilibrium of energy.
- 8. according to the method described in claim 6, it is characterized in that：When battery system is in charged state, the highest battery list of energy in each battery pack is gated by gating switch matrix Member, then to master switch M1, M2 ..., MN carry out PWM controls, the highest battery unit of N number of energy from N number of battery pack Power supply as flyback transformer primary side is carried out at the same time balanced discharge；When master switch is in opening state, the first side winding of energy storage in battery unit in flyback transformer T In, when master switch M1, M2 ..., MN be off when, be stored in the energy in flyback transformer T through M0 it is anti-simultaneously Union II pole pipe is transferred in voltage source E；In charge balancing, the energy that the high battery unit of energy is released is more.
- 9. according to the method described in claim 6, it is characterized in that：When battery system is in discharge condition, the battery list of minimum energy in each battery pack is gated by gating switch matrix Member, then carries out PWM controls, power supplys of the voltage source E as flyback transformer T secondary sides, then from N number of to master switch M0 The battery unit of N number of minimum energy of battery pack is carried out at the same time equalizaing charge；When master switch M0 is in opening state, the secondary side winding of energy storage in voltage source E in flyback transformer T In, when master switch M0 is closed, it is stored in the corresponding battery unit into battery pack of the energy transfer in flyback transformer T In；In equalization discharge, the energy that the low battery unit of energy is electrically charged is more.
- 10. according to the method described in claim 6, it is characterized in that：When battery system is in static condition, by cell balancing module, two series connection in each battery unit are realized Balancing energy between single battery；By the control to respective switch Q in equilibrium, lead to the energy between two single batteries Cross inductance to be shifted, the high single battery of energy is the low charging of energy.
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