CN207967973U - A kind of lithium-ion battery systems multiplex mode high efficiency energy balanced device - Google Patents
A kind of lithium-ion battery systems multiplex mode high efficiency energy balanced device Download PDFInfo
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- CN207967973U CN207967973U CN201820007005.0U CN201820007005U CN207967973U CN 207967973 U CN207967973 U CN 207967973U CN 201820007005 U CN201820007005 U CN 201820007005U CN 207967973 U CN207967973 U CN 207967973U
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 27
- 239000011159 matrix material Substances 0.000 claims abstract description 98
- 239000000203 mixture Substances 0.000 claims abstract description 26
- 238000004804 winding Methods 0.000 claims description 16
- 230000005611 electricity Effects 0.000 claims description 12
- 239000000178 monomer Substances 0.000 claims description 7
- 238000002955 isolation Methods 0.000 abstract description 2
- 238000004146 energy storage Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
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Abstract
The utility model is related to a kind of lithium-ion battery systems multiplex mode high efficiency energy balanced devices, the utility model balanced device 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, and upper bridge arm power switch matrix H and lower bridge arm power switch matrix S are the double-deck power switch matrix being made of to the power switch of differential concatenation m.The electrical isolation of battery pack may be implemented in the utility model, prevents influencing each other between different battery packs, the medium converted as energy using flyback transformer, reduces the volume of balanced device and topological circuit principle is simple.
Description
Technical field
The utility model is related to a kind of lithium-ion battery systems multiplex mode high efficiency energy balanced devices, belong to power electronics skill
Art 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 vehicle has received widespread attention,
It develops into inexorable trend.Since lithium ion battery has small, energy density is high and memory-less effect is 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, needs
A large amount of lithium ion battery is together in series use.During the use of accumulator group, due to battery itself difference and make
Lithium ion battery energy can be caused inconsistent with the difference of environment, to which overcharging and putting excessively for lithium ion battery can be caused, in turn
Lead to scrapping in advance for accumulator group.In order to solve the problems, such as that battery energy is inconsistent, it is necessary to take effective scheme pair
Accumulator group carries out balancing energy.
Currently, there are many accumulator group equalization scheme, including passive balanced and active equalization, passive equilibrium mainly pass through
The extra energy of accumulator is consumed by resistance to achieve the purpose that equilibrium, such equalization scheme energy loss are tight
Weight.Active equalization mainly shifts the extra energy of accumulator to achieve the purpose that equilibrium, equalization efficiency are 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 results in electric vehicle, widely to be developed, and it is expensive, because
This, the application of electric vehicle 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 extend for improving the charge/discharge capacity of lithium-ions battery group
Its service life cycle pushes new energy lithium ion battery energy storage system and New-energy electric vehicle development to have extremely important meaning
Justice, while to promoting the sustainable development of human society to have very important social value and realistic meaning.
Invention content
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 vehicle
Energy inconsistence problems between connection lithium ion single battery, it is high that the utility model provides a kind of lithium-ion battery systems multiplex mode
Efficiency amount balanced device.
The technical solution of the utility model is：A kind of lithium-ion battery systems multiplex mode high efficiency energy balanced device, for
The battery system that N number of battery pack of N*m battery unit Bij composition is constituted, balanced device is by N number of gating switch matrix, N number of electricity
Sense, N+1 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 is formed；Wherein gating switch matrix is by upper bridge arm bilayer
Power switch matrix H, lower bridge arm bilayer power switch matrix S are constituted, and each cell balancing modules A ij is opened by two power
Pass and an inductance L composition, upper bridge arm power switch matrix H and lower bridge arm power switch matrix S are by m to differential concatenation
The double-deck power switch matrix of power switch composition；
The upper end of m, the upper layer power switch of the upper bridge arm of N number of gating switch matrix draw N lead respectively with master
Control switch M1, M2 ..., one end of MN it is connected, master switch M1, M2 ..., the other end of MN and flyback transformer T primary sides
Upper end be connected；It draws N lead and is connected to one in the lower end of m power switch of lower layer of the lower bridge arm of N number of gating switch matrix
It rises, is connected jointly with the lower end of flyback transformer T primary sides；Capacitance C1, C2 ..., CN anode it is upper with upper bridge arm respectively
Lead-out wire is held to be connected, cathode 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 anode of voltage source E；The cathode of voltage source E and flyback transformer T secondary sides
Lower end be connected, the anode and cathode of capacitance C0 are connected with the positive and cathode 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.
The upper bridge arm power switch matrix H of gating switch matrix X by m to the double-deck power switch XH1j of differential concatenation and
XH2j is formed；The lower bridge arm power switch matrix S of gating switch matrix X by m to the double-deck power switch XS1j of differential concatenation and
XS2j is formed；Wherein, X=1,2 ... N；j=1,2,...m.
The voltage source E is provided by battery system by the accumulator group other than 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.
The utility model has the beneficial effects that：The electrical isolation of battery pack may be implemented in the utility model, prevents different electricity
Influencing each other between the group of pond, the medium converted as energy using flyback transformer are reduced the volume of balanced device and opened up
It is simple to flutter circuit theory.The utility model introduces double balancing energy strategy with two batteries for a battery unit,
The energy transfer efficiency that weighs is high, balancing speed is fast, strong to the control ability of euqalizing current, is realizing each battery list in every group of battery pack
Between member while balancing energy, the balancing energy between different battery packs and between the battery unit of different battery packs is also achieved.
Description of the drawings
Fig. 1 is the utility model topological circuit schematic diagram；
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.
Specific implementation mode
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 constituted, 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 are formed；Wherein gating switch matrix is by upper bridge arm bilayer power
Switch matrix H, lower bridge arm bilayer power switch matrix S are constituted, each cell balancing modules A ij by two power switch and
One inductance L composition, upper bridge arm power switch matrix H and lower bridge arm power switch matrix S are by m to the power of differential concatenation
Switch the double-deck power switch matrix of composition；The upper end of m, the upper layer power switch of the upper bridge arm of N number of gating switch matrix
Draw N lead respectively with master switch M1, M2 ..., one end of MN be connected, master switch M1, M2 ..., the other end of MN and
The upper end of flyback transformer T primary sides is connected；The lower end of m power switch of lower layer of the lower bridge arm of N number of gating switch matrix
It draws N lead to link together, be connected jointly with the lower end of flyback transformer T primary sides；Capacitance C1, C2 ..., CN just
Pole is connected with the upper end lead-out wire of upper bridge arm respectively, and cathode 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 anode of voltage source E；The cathode of voltage source E with
The lower ends of flyback transformer T secondary sides is connected, the anode and cathode of capacitance C0 respectively with the positive and cathode phase of voltage source E
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 power switch, the cell balancing mould work(in the block being arranged in the gating switch matrix
Rate switch Q, master switch M are inverse conductivity type device for power switching.
It is possible to further which pair of the upper bridge arm power switch matrix H of gating switch matrix X by m to differential concatenation is arranged
Layer power switch XH1j and XH2j composition；The lower bridge arm power switch matrix S of gating switch matrix X is by m to the double of differential concatenation
Layer power switch XS1j and XS2j composition；Wherein, X=1,2 ... N；j=1,2,...m.
It is provided by DC/DC by battery system it is possible to further which the voltage source E is arranged（Or voltage source E is by battery
Accumulator group other than system provides）.
Primary side it is possible to further which the flyback transformer is arranged is Multiple coil, each battery pack corresponds to
One winding, secondary side are simplex winding.
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 then highest electricity of N number of energy from N number of battery pack
Pool unit carries out balanced discharge as the power supply of flyback transformer primary side.
By taking the equilibrium of two groups of batteries 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., control 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, PWM controls are carried out 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, it is stored in anti-paralleled diode of the energy in transformer through M0
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
On the one hand unit while balanced discharge improve each battery pack and the charging capacity of entire 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 constituted, 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 are formed；Wherein gating switch matrix is by upper bridge arm bilayer power
Switch matrix H, lower bridge arm bilayer power switch matrix S are constituted, each cell balancing modules A ij by two power switch and
One inductance L composition, upper bridge arm power switch matrix H and lower bridge arm power switch matrix S are by m to the power of differential concatenation
Switch the double-deck power switch matrix of composition；The upper end of m, the upper layer power switch of the upper bridge arm of N number of gating switch matrix
Draw N lead respectively with master switch M1, M2 ..., one end of MN be connected, master switch M1, M2 ..., the other end of MN and
The upper end of flyback transformer T primary sides is connected；The lower end of m power switch of lower layer of the lower bridge arm of N number of gating switch matrix
It draws N lead to link together, be connected jointly with the lower end of flyback transformer T primary sides；Capacitance C1, C2 ..., CN just
Pole is connected with the upper end lead-out wire of upper bridge arm respectively, and cathode 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 anode of voltage source E；The cathode of voltage source E with
The lower ends of flyback transformer T secondary sides is connected, the anode and cathode of capacitance C0 respectively with the positive and cathode phase of voltage source E
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 power switch, the cell balancing mould work(in the block being arranged in the gating switch matrix
Rate switch Q, master switch M are inverse conductivity type device for power switching.
It is possible to further which pair of the upper bridge arm power switch matrix H of gating switch matrix X by m to differential concatenation is arranged
Layer power switch XH1j and XH2j composition；The lower bridge arm power switch matrix S of gating switch matrix X is by m to the double of differential concatenation
Layer power switch XS1j and XS2j composition；Wherein, X=1,2 ... N；j=1,2,...m.
It is provided by the accumulator group other than battery system it is possible to further which the voltage source E is arranged（Or voltage source E
It is provided by DC/DC by battery system）.
Primary side it is possible to further which the flyback transformer is arranged is Multiple coil, each battery pack corresponds to
One winding, secondary side are simplex winding.
When battery system is in discharge condition, the electricity of minimum energy in each battery pack is gated by gating switch matrix
Then pool unit carries out PWM controls to master switch M0, the battery unit of N number of minimum energy from N number of battery pack is as anti-
The output end for swashing formula transformer primary side is carried out at the same time equalizaing charge.
By taking the equilibrium of two groups of batteries 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., control 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, PWM controls are carried out to master switch M0, 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 simultaneously, on the one hand improves each battery pack and the discharge capacity of entire battery system, on the other hand
The energy between the single battery of the minimum energy from different battery packs in battery system is set to be equalized.
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 constituted, 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 are formed；Wherein gating switch matrix is by upper bridge arm bilayer power
Switch matrix H, lower bridge arm bilayer power switch matrix S are constituted, each cell balancing modules A ij by two power switch and
One inductance L composition, upper bridge arm power switch matrix H and lower bridge arm power switch matrix S are by m to the power of differential concatenation
Switch the double-deck power switch matrix of composition；The upper end of m, the upper layer power switch of the upper bridge arm of N number of gating switch matrix
Draw N lead respectively with master switch M1, M2 ..., one end of MN be connected, master switch M1, M2 ..., the other end of MN and
The upper end of flyback transformer T primary sides is connected；The lower end of m power switch of lower layer of the lower bridge arm of N number of gating switch matrix
It draws N lead to link together, be connected jointly with the lower end of flyback transformer T primary sides；Capacitance C1, C2 ..., CN just
Pole is connected with the upper end lead-out wire of upper bridge arm respectively, and cathode 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 anode of voltage source E；The cathode of voltage source E with
The lower ends of flyback transformer T secondary sides is connected, the anode and cathode of capacitance C0 respectively with the positive and cathode phase of voltage source E
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 power switch, the cell balancing mould work(in the block being arranged in the gating switch matrix
Rate switch Q, master switch M are inverse conductivity type device for power switching.
It is possible to further which pair of the upper bridge arm power switch matrix H of gating switch matrix X by m to differential concatenation is arranged
Layer power switch XH1j and XH2j composition；The lower bridge arm power switch matrix S of gating switch matrix X is by m to the double of differential concatenation
Layer power switch XS1j and XS2j composition；Wherein, X=1,2 ... N；j=1,2,...m.
It is provided by the accumulator group other than battery system it is possible to further which the voltage source E is arranged（Or voltage source E
It is provided by DC/DC by battery system）.
Primary side it is possible to further which the flyback transformer is arranged is Multiple coil, each battery pack corresponds to
One winding, secondary side are simplex winding.
When battery system is in static condition, by cell balancing module, two strings in each battery unit are realized
Join the balancing energy between single battery, equivalent equalizing circuit is typical stepping-up/stepping-down chopper circuit.
As shown in figure 4, by taking battery unit A11 as an example, it is assumed that in battery unit B11, single battery Cell11 energy is high.
When weighing apparatus, PWM controls are carried out to the switch 1Q1 in balance module A11：When switch 1Q1 is connected, 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
It moves.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 modules in system（Aij, i=1,2 ..., N, j=1,2 ..., m）Balancing principle is same as above.
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 constituted, 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 are formed；Wherein gating switch matrix is by upper bridge arm bilayer power
Switch matrix H, lower bridge arm bilayer power switch matrix S are constituted, each cell balancing modules A ij by two power switch and
One inductance L composition, upper bridge arm power switch matrix H and lower bridge arm power switch matrix S are by m to the power of differential concatenation
Switch the double-deck power switch matrix of composition；The upper end of m, the upper layer power switch of the upper bridge arm of N number of gating switch matrix
Draw N lead respectively with master switch M1, M2 ..., one end of MN be connected, master switch M1, M2 ..., the other end of MN and
The upper end of flyback transformer T primary sides is connected；The lower end of m power switch of lower layer of the lower bridge arm of N number of gating switch matrix
It draws N lead to link together, be connected jointly with the lower end of flyback transformer T primary sides；Capacitance C1, C2 ..., CN just
Pole is connected with the upper end lead-out wire of upper bridge arm respectively, and cathode 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 anode of voltage source E；The cathode of voltage source E with
The lower ends of flyback transformer T secondary sides is connected, the anode and cathode of capacitance C0 respectively with the positive and cathode phase of voltage source E
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 power switch, the cell balancing mould work(in the block being arranged in the gating switch matrix
Rate switch Q, master switch M are inverse conductivity type device for power switching.
It is possible to further which pair of the upper bridge arm power switch matrix H of gating switch matrix X by m to differential concatenation is arranged
Layer power switch XH1j and XH2j composition；The lower bridge arm power switch matrix S of gating switch matrix X is by m to the double of differential concatenation
Layer power switch XS1j and XS2j composition；Wherein, X=1,2 ... N；j=1,2,...m.
Passed through other than DC/DC offers or battery system by battery system it is possible to further which the voltage source E is arranged
Accumulator group provides.
Primary side it is possible to further which the flyback transformer is arranged is Multiple coil, each battery pack corresponds to
One winding, secondary side are simplex winding.
When battery pack is in charge or discharge state, if only the energy of some or several battery packs is inconsistent,
Only this one or several battery pack can be carried out balanced.In equilibrium, control corresponding matrix switch and master switch to
Realize the equilibrium of energy.
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, electricity
Energy storage in pool unit in the first side winding of flyback transformer T, when master switch M1, M2 ..., MN be in disconnect
When state, anti-paralleled diode of the energy through M0 being stored in flyback transformer T is transferred in voltage source E；It is equal in charging
In weighing apparatus, 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 PWM controls to master switch M0, and power supplys of the voltage source E as flyback transformer T secondary sides then comes
It is carried out at the same time equalizaing charge from the battery unit of N number of minimum energy of N number of battery pack；When master switch M0 is in opening state
When, the energy storage in voltage source E, when master switch M0 is closed, is stored in the secondary side winding of flyback transformer T
In energy transfer to battery pack in flyback transformer T in corresponding battery unit；In equalization discharge, the low battery of energy
The energy that unit is electrically charged is more.
The specific embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the utility model is not
It is limited to the above embodiment, within the knowledge of a person skilled in the art, this practicality can also be not being departed from
Various changes can be made under the premise of novel objective.
Claims (5)
1. a kind of 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 constituted, 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 constituted, and each cell balancing modules A ij is by two power switch and an inductance L
It constitutes, upper bridge arm power switch matrix H and lower bridge arm power switch matrix S are to be made of to the power switch of differential concatenation m
The double-deck power switch matrix；
It draws N lead and is opened respectively with master control in the upper end of m, the upper layer 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 layer of the lower bridge arm of N number of gating switch matrix draws N lead and links together, altogether
It is connected with the lower end of flyback transformer T primary sides；Capacitance C1, C2 ..., CN anode respectively with the upper end of upper bridge arm draw
Line is connected, and cathode 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 anode of voltage source E；The lower end of the cathode and flyback transformer T secondary sides of voltage source E
It is connected, the anode and cathode of capacitance C0 are connected with the anode and cathode of voltage source E respectively；Two in each battery unit Bij
Connect monomer battery lead 3 lead-out wires respectively with corresponding cell balancing mould two power switch in the block and one
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：Gating
The upper bridge arm power switch matrix H of switch matrix X is made of the double-deck power switch XH1j and XH2j of differential concatenation m；Gating
The lower bridge arm power switch matrix S of switch matrix X is made of the double-deck power switch XS1j and XS2j of differential concatenation m；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 accumulator group other than 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
Flyback transformer primary side be Multiple coil, each battery pack correspond to a winding, secondary side is simplex winding.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108039759A (en) * | 2018-01-03 | 2018-05-15 | 昆明理工大学 | A kind of lithium-ion battery systems multiplex mode high efficiency energy balanced device and its control method |
| CN113629811A (en) * | 2021-08-11 | 2021-11-09 | 傲普(上海)新能源有限公司 | Battery equalization circuit of inductive transformer |
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2018
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108039759A (en) * | 2018-01-03 | 2018-05-15 | 昆明理工大学 | A kind of lithium-ion battery systems multiplex mode high efficiency energy balanced device and its control method |
| CN108039759B (en) * | 2018-01-03 | 2024-03-26 | 昆明理工大学 | Multi-mode high-efficiency energy equalizer of lithium ion battery system and control method thereof |
| CN113629811A (en) * | 2021-08-11 | 2021-11-09 | 傲普(上海)新能源有限公司 | Battery equalization circuit of inductive transformer |
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