CN109888417A - A kind of direct balanced device composite structure of series connection accumulation power supply - Google Patents
A kind of direct balanced device composite structure of series connection accumulation power supply Download PDFInfo
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- CN109888417A CN109888417A CN201910280797.8A CN201910280797A CN109888417A CN 109888417 A CN109888417 A CN 109888417A CN 201910280797 A CN201910280797 A CN 201910280797A CN 109888417 A CN109888417 A CN 109888417A
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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
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- Y02E60/10—Energy storage using batteries
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Abstract
The present invention provides a kind of direct balanced device composite structure of series connection accumulation power supply, it include: the direct balance module of n monomer, n across group balance module and an energy-storage travelling wave tube, the direct balance module of n monomer is sequentially connected in series, n are connected in parallel to each other across a group balance module and are respectively connected to an energy-storage travelling wave tube both ends, the direct balance module of n monomer and n are a across a group balance module one-to-one correspondence, each direct balance module of monomer includes m monomer and the first inductance, m monomer series-connected, each monomer is connected with the first inductance, it include each the second inductance and two-way switch across group balance module, second inductance, two-way switch and energy-storage travelling wave tube series connection, a n the second inductance across in group balance module of n the first inductance and n in the direct balance module of n monomer correspond coupling setting, the present invention can be realized in module monomer to monomer Direct equilibrium, can also realize that the monomer between the energy storage monomer that two belong to the direct balance module of different monomers to the bidirectional equalization of monomer, shortens equilibrium path, improves equalization efficiency, be convenient for commercialization via energy-storage travelling wave tube.
Description
Technical field
The present invention relates to a kind of power supply equalization device structures, and in particular, to a kind of direct balanced device group of series connection accumulation power supply
Close structure.
Background technique
Voltage-type storage bodies based on power battery or supercapacitor are widely used in electric car, space power system, function
Rate pulser etc. needs the field of energy stores.No matter power battery or supercapacitor, the voltage and capacity of monomer
It is all restricted, it in many applications, need to be by several or even several hundred monomer series-connected composition energy storage groups, to meet voltage and energy
It is required that.Although as technological progress, the consistency of energy storage monomer is stepped up, but after long-time use, monomer parameter still has can
Larger difference can occur, occur the capacity of battery pack " bottleneck ", easily occur some or certain monomers overcharge or over-discharge is existing
As causing series connection accumulation pool-size and security performance to reduce, cycle life is reduced.Carrying out the balancing energy between storage bodies is to solve
A kind of inconsistent effective way for causing series-connected cell group working performance to reduce problem of monomer, therefore monomer balancing technique becomes string
Federal Reserve can organize one of key technology of practical application.
Currently, both at home and abroad there are many kinds of the balanced topological structure based on Switching Technique, can substantially be divided into
Lower three classes:
The first kind can be achieved on the flying capacitance formula equilibrium topological structure that monomer directly transmits monomer energy；
Second class can be achieved on the bi-directional of energy or multiple adjacent monomer single direction energy between two neighboring monomer
The balanced topological structure of amount successively transmitted；
Third class can be achieved on the energy transmission between monomer and series connection accumulation power supply group, i.e., part is arrived to whole or entirety
The balanced topological structure of the energy transmission of part.
First kind flying capacitance formula equilibrium topological structure can realize the direct transmitting of point-to-point energy, but switch and open moment
Electric current is very big, is easy to damage battery, and furthermore the structure is not easy to realize that modularization extends；And the second class equilibrium topological structure
In the transmitting of energy between carrying out non-adjacent monomer, in balancing procedure, equilibrium path is long, balancing speed is slow, set expandability is poor；
The monomer that third class equalizing structure cannot achieve energy transmits monomer great-leap-forward, and there are balanced energy weights in balancing procedure
Folded, equalization efficiency is low.
Patent CN201710695385.1 " a kind of series connection accumulation power supply multipath balancer and method " describes one kind
Series connection accumulation balancer, described in " for n series connection accumulation monomer B 1, B 2 ... B n, by 1 inductance L, 6
Switching tube S A1, S A2, S B1, S B2, S B3, S B4 and n+2 two-way switch Q A, 0 Q, Q 1, Q 2 ... Q n composition,
One end of two-way switch Q 0 is connected with the cathode of B 1, two-way switch Q 1, Q 2 ... Q n one end respectively with B 1, B
The anode of 2 ... B n is connected, and the other end marked as the two-way switch Q 0 of even number, Q 2, Q 4 ... is commonly connected to node
A, the other end marked as the two-way switch Q 1 of odd number, Q 3, Q 5 ... are commonly connected to node B, and the one of two-way switch Q A
End is connected with node A, and the other end is connected with the drain electrode of inductance L, switching tube S B3, the source electrode and switching tube S B4 of switching tube S B3
Source electrode be connected, the drain electrode of switching tube S B4 is connected with node B, and the drain electrode of switching tube S A1 is connected with node A, switching tube S A1
Source electrode be connected with the source electrode of switching tube S A2, the drain electrode of switching tube S A2 and the other end of inductance L and switching tube S B1's
Drain electrode connection, the source electrode of switching tube S B1 are connected with the source electrode of switching tube S B2, and the drain electrode of switching tube S B2 is connected with node B."
Balancer of the invention is realized based on independent inductance.
It is described in patent CN201611048419.X " series connection accumulation balancer and method with point-to-point path "
A kind of series connection accumulation balancer, described in " when energy storage amount of monomer be 2n when, n is positive integer, i.e., quantity be even number
When, it includes the identical coupling inductance of 2n the number of turns, 6n switch mosfet pipes；Energy storage monomer B2n-1 and B2n, coupling inductance
L2n-1 and L2n, switch mosfet pipe S2n-1, SL2n-1, SD2n-1, S2n, SL2n, SD2n constitute a group, share n group
Series connection；Specific connection in group are as follows: the anode of B2n-1 is connected with the drain electrode of S2n-1, the source electrode of the source electrode of S2n-1 and SL2n-1,
The drain electrode of the source electrode, S2n of SD2n is connected, and the source electrode of S2n is connected with the cathode of B2n, source electrode, the SD2n- of the anode and SL2n of B2n
1 source electrode, the cathode of B2n-1 are connected, and the drain electrode of SL2n-1 is connected with the Same Name of Ends of L2n-1, the different name end of L2n-1 and SD2n-1
Drain electrode be connected, the drain electrode of SD2n is connected with the different name end of L2n, and the Same Name of Ends of L2n is connected with the drain electrode of SL2n；When energy storage monomer
When quantity is 2n+1, n is positive integer, i.e., when quantity is odd number, it includes the identical coupling inductance of 2n+2 the number of turns, 6n+4 is a
Switch mosfet pipe；Its preceding n group with energy storage amount of monomer for 2n when connection it is identical；Energy storage monomer B2n+1, coupling inductance
L2n+1, L2n+2, switch mosfet pipe Sa, Sb, Sc, Sd form (n+1)th group；(n+1)th group specifically connects are as follows: B2n+1's
Anode is connected with the source electrode of the source electrode of Sa, Sc, and the drain electrode of Sa is connected with the Same Name of Ends of L2n+1, the different name end of L2n+1 and the leakage of Sb
Extremely it is connected, the source electrode of Sb is connected with the source electrode of the cathode of B2n+1, Sd, and the drain electrode of Sc is connected with the different name end of L2n+2, L2n+2's
Same Name of Ends is connected with the drain electrode of Sd." balancer of the invention realized based on coupling inductance.
Above-mentioned series connection accumulation balancer or other series connection accumulations can be used in the direct balance module of m monomer in the present invention
Balancer, the direct balance module of m monomer are that the monomer with the first inductance of coupling or independent first inductance is straight to monomer
Balanced device is connect, the direct balance module of m monomer is the prior art, therefore its specific structure and original are no longer discussed in detail in the present invention
Reason.
Summary of the invention
For the defects in the prior art, the object of the present invention is to provide a kind of direct balanced device combinations of series connection accumulation power supply
Structure asks monomer balancing energy path length and balancing energy low efficiency for solving existing energy storage monomer balancer monomer
Topic, DIRECT ENERGY is transmitted between any two energy storage monomer when the present invention can be realized long series-connected cell group grouping equilibrium, is shortened equal
Equalization efficiency is improved, and is convenient for the commercialization of equal balance system in weighing apparatus path.
The present invention provides a kind of direct balanced device composite structures of series connection accumulation power supply, comprising: the direct equilibrium model of n monomer
Block, n across group balance module and an energy-storage travelling wave tube, the direct balance module of n monomer is sequentially connected in series, and the n across group
Balance module is connected in parallel to each other and is respectively connected to an energy-storage travelling wave tube both ends, the direct balance module of n monomer and the n across
Group balance module is arranged in a one-to-one correspondence,
It include each the second inductance and two-way switch, second inductance, the two-way switch and institute across group balance module
It states an energy-storage travelling wave tube to be sequentially connected in series, the n in the direct balance module of n monomer the first inductance and the n are a equal across group
N the second inductance in the module that weighs correspond coupling setting,
N > 1, and be positive integer.
Further, n the first inductance are Multiple coil coupling inductance or independent winding inductance.
Further, the turn ratio of each second inductance and each first inductance is k:1, and wherein k=1,2 ... t, t are big
In the positive integer for being equal to 1.
Further, switching tube there are two being set in each two-way switch.
Further, the switching tube is metal-oxide-semiconductor.
Further, each across in group balance module, the drain electrode of described two switching tubes respectively with second inductance
Both ends connection, the source electrode of described two switching tubes connect with the both ends of one energy-storage travelling wave tube respectively.
Further, each across in group balance module, described two switching tubes are located at ipsilateral, the institute of second inductance
The source electrode for stating two switching tubes is connected with each other, and the drain electrode of one of switching tube is connect with one end of second inductance, another
The drain electrode of a switching tube is connect with one end of one energy-storage travelling wave tube, the other end of one energy-storage travelling wave tube and described second
The other end of inductance connects.
Further, one energy-storage travelling wave tube is capacitor.
Further, one energy-storage travelling wave tube is single battery.
Further, one energy-storage travelling wave tube is series-connected cell group.
Compared with prior art, the present invention have it is following the utility model has the advantages that
(1) in a kind of direct balanced device composite structure of series connection accumulation power supply proposed by the present invention, each direct equilibrium model of monomer
Block can be realized direct equilibrium of the monomer to monomer in module, also can realize two via an energy-storage travelling wave tube and belong to difference
The direct balance module of monomer energy storage monomer between monomer to the bidirectional equalization of monomer；
(2) in a kind of direct balanced device composite structure of series connection accumulation power supply proposed by the present invention, cross-module balancing procedure into
While row, the direct balance module of other monomers in addition to two direct balance modules of monomer of cross-module block balance can carry out group
Interior equilibrium；
(3) in a kind of direct balanced device composite structure of series connection accumulation power supply proposed by the present invention, series-connected cell quantity is to equal
The circuit complexity that weighs influences very little, and equalizing circuit extension is flexible；
(4) in a kind of direct balanced device composite structure of series connection accumulation power supply proposed by the present invention, the voltage of two-way switch is answered
Power is low.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is a kind of structural representation of an embodiment of the direct balanced device composite structure of series connection accumulation power supply of the invention
Figure；
Fig. 2 is a kind of structural representation of another embodiment of the direct balanced device composite structure of series connection accumulation power supply of the invention
Figure；
Fig. 3 is multiple direct equilibrium models of monomer in the direct balanced device composite structure of a kind of series connection accumulation power supply of the invention
Block works at the same time status diagram；
When Fig. 4 is that B1 battery releases energy, a kind of work shape of the direct balanced device composite structure of series connection accumulation power supply of the invention
State schematic diagram；
When Fig. 5 is the second inductance L1 energy storage, a kind of work of the direct balanced device composite structure of series connection accumulation power supply of the invention
Make status diagram；
When Fig. 6 is an energy-storage travelling wave tube energy storage, a kind of direct balanced device composite structure of series connection accumulation power supply of the invention
Working state schematic representation；
When Fig. 7 is that an energy-storage travelling wave tube releases energy to the second inductance L3, a kind of series connection accumulation power supply of the invention is directly balanced
The working state schematic representation of device composite structure；
Fig. 8 be battery B1 release can and the direct balance module 2 of monomer in monomer to monomer equilibrium when, a kind of series connection of the invention
The working state schematic representation of the direct balanced device composite structure of accumulation power supply；
When Fig. 9 is that monomer is to monomer equilibrium in the second inductance L1 energy storage and the direct balance module 2 of monomer, one kind of the invention
The working state schematic representation of the direct balanced device composite structure of series connection accumulation power supply；
It is of the invention when Figure 10 is that monomer is to monomer equilibrium in an energy-storage travelling wave tube energy storage and the direct balance module 2 of monomer
A kind of working state schematic representation of the direct balanced device composite structure of series connection accumulation power supply；
Figure 11 be energy-storage travelling wave tube to the second inductance L3 release can and the direct balance module 2 of monomer in monomer to monomer equilibrium
When, a kind of working state schematic representation of the direct balanced device composite structure of series connection accumulation power supply of the invention.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection scope.
Referring to Fig.1 shown in-Figure 11, a kind of direct balanced device composite structure of series connection accumulation power supply is provided, comprising: n single
The direct balance module of body, n across group balance module and an energy-storage travelling wave tube, the direct balance module of n monomer is sequentially connected in series, and n
The both ends of an energy-storage travelling wave tube are connected in parallel to each other and are respectively connected to across group balance module, and the direct balance module of n monomer and n are a across group
Balance module is arranged in a one-to-one correspondence,
It include each the second inductance and two-way switch, the second inductance, two-way switch and an energy storage member across group balance module
Part is sequentially connected in series, the n in the direct balance module of n monomer the first inductance and a n the second inductance across in group balance module of n
Coupling setting is corresponded,
N > 1, and be positive integer.
Specifically, in the present embodiment, a kind of direct balanced device composite structure of series connection accumulation power supply of the invention is due to adopting
It with modularization, therefore is highly convenient for increasing and tearing open subtracting module, is conveniently adjusted the size of entire composite structure.Wherein, of the invention
In the direct balance module of m monomer can be used existing series connection accumulation balancer, the direct balance module of m monomer is with coupling
The monomer of the first inductance or independent first inductance is closed to monomer direct equalizer, can be realized in module monomer to the straight of monomer
Connect equilibrium, due to the direct balance module of monomer be the prior art, be no longer discussed in detail in the present invention its specific structure and
Principle.Each direct balance module of monomer has m monomer, and m > 1 in the present invention, and is positive integer, and it is direct to share n monomer
Therefore balance module in a specific embodiment, when positioning m-th of monomer in n-th of module, then uses Bn,mTo indicate.
B1,1To Bn,mRespectively indicate the 1st to the m × n energy storage monomer, similarly, Q1To QnIndicate the 1st to n-th two-way switch, L1Extremely
LnIndicate the 1st to n-th combination connection coupling inductance.
When two monomers for participating in energy transmission belong in the direct balance module of the same monomer, balancing procedure is by place
The direct balance module of monomer oneself complete, at this point, the direct balanced device composite structure of series connection accumulation power supply of the invention is in mould
Monomer balanced mode in block, and simultaneously, each direct balance module of monomer can implement equilibrium simultaneously.Illustrate this reality referring to Fig. 3
Mode is applied, with monomer B1,1To monomer B1,2Transmit energy, monomer B2,1To monomer B2,mIllustrate in case where transmitting energy, it is single
The direct balance module 1 of body implements monomer B1,1To monomer B1,2Energy is transmitted, the direct balance module 2 of monomer implements monomer B2,1Xiang Dan
Body B2,mEnergy is transmitted, two modules can concurrently and independently implement energy transmission；
When two monomers for participating in energy transmission are belonging respectively to the direct balance module of different monomers, series connection of the invention
The direct balanced device composite structure of accumulation power supply is in intermodule monomer balanced mode, specific equalization methods are as follows: can store up via one
Energy element realizes that the great-leap-forward monomer of energy transmits monomer, in conjunction with Fig. 4-Fig. 7, with monomer B1,1To monomer Bn,mTransmit energy
Illustrate for situation, unmentioned two-way switch is in off state in the present embodiment.Monomer B1,1It is directly equal by monomer
Excess energy is transferred to the second inductance L by the module 1 that weighs1In, two-way switch Q is opened at this time1, the second inductance L1In energy transfer
Into an energy-storage travelling wave tube, two-way switch Q is then turned off1, open two-way switch Qn, the energy transfer in an energy-storage travelling wave tube is extremely
Second inductance LnIn, LnBy the direct balance module n of monomer by extra energy transmission to subject monomers Bn,mIn；
When two monomers for participating in energy transmission are belonging respectively to different monomers direct balance module, participate in energy transmission
When two monomers belong to two kinds of situations in the direct balance module of the same monomer and deposit, series connection accumulation power supply of the invention is directly equal
Weighing apparatus composite structure is in intermodule monomer balanced mode and organizes the operating mode that interior balanced mode coexists, method are as follows: implement mould
Between block two direct balance modules of monomer locating for two balanced monomers can not balancing procedure in starting group simultaneously, other monomers
Direct balance module can carry out equilibrium in group simultaneously, referring to Fig. 8-Figure 11, with monomer B1,1To monomer Bn,mTransmit energy, monomer
B2,1To monomer B2,mIllustrate in case where transmitting energy, unmentioned two-way switch is in off state.Monomer B1,1It is logical
It crosses 1, energy-storage travelling wave tube of the direct balance module of monomer and the direct balance module n of monomer transfers the energy to subject monomers Bm,nIn,
Realize that intermodule is balanced, the direct balance module 1 of monomer and the direct balance module n of monomer must not be carried out simultaneously between other monomers at this time
Module in it is balanced；Meanwhile monomer B2,1By the direct balance module 2 of monomer to monomer B2,mEnergy is transmitted, is realized in module
Weighing apparatus.
The present invention expands out one kind and has both balanced in module and difference on the basis of existing monomer directly organizes interior equilibrium
The balanced composite structure of intermodule monomer equilibrium, and both of which weighing apparatus mode can carry out simultaneously, enhance equalization efficiency significantly.
Referring to Fig.1 shown in-Figure 11, in the preferred embodiment of this part, n the first inductance are for Multiple coil coupling inductance or solely
Vertical winding inductance.
In the preferred embodiment of this part, the turn ratio of each second inductance and each first inductance is k:1, wherein k=
1,2 ... t, t are the positive integer more than or equal to 1.
Referring to Fig.1 shown in-Figure 11, in the preferred embodiment of this part, set in each two-way switch there are two switching tube.
In the preferred embodiment of this part, switching tube is metal-oxide-semiconductor.
Shown in referring to Fig.1, in the preferred embodiment of this part, each across in group balance module, the leakage of two switching tubes
Pole is connect with the both ends of the second inductance respectively, and the source electrode of two switching tubes is connect with the both ends of an energy-storage travelling wave tube respectively.
Referring to shown in Fig. 2, in the preferred embodiment of this part, each across in group balance module, two switching tubes are located at
Second inductance it is ipsilateral, the source electrode of two switching tubes is connected with each other, drain electrode and one end of the second inductance of one of switching tube
Connection, the drain electrode of another switching tube are connect with one end of an energy-storage travelling wave tube, the other end and the second electricity of an energy-storage travelling wave tube
The other end of sense connects.
In the preferred embodiment of this part, an energy-storage travelling wave tube is capacitor.
In the preferred embodiment of this part, an energy-storage travelling wave tube is single battery.
In the preferred embodiment of this part, an energy-storage travelling wave tube is series-connected cell group.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring substantive content of the invention.
Claims (10)
1. a kind of direct balanced device composite structure of series connection accumulation power supply characterized by comprising the direct balance module of n monomer,
N across group balance module and an energy-storage travelling wave tube, the direct balance module of n monomer is sequentially connected in series, and the n across a group equilibrium
Module is connected in parallel to each other and is respectively connected to one energy-storage travelling wave tube both ends, the direct balance module of n monomer and the n across
Group balance module is arranged in a one-to-one correspondence,
It include each the second inductance and two-way switch, second inductance, the two-way switch and described one across group balance module
A energy-storage travelling wave tube is sequentially connected in series, if the inductance in the direct balance module of each monomer is the first inductance, then the n monomer is direct
A n the second inductance across in group balance module of n the first inductance and the n in balance module correspond coupling setting,
N > 1, and be positive integer.
2. the direct balanced device composite structure of a kind of series connection accumulation power supply according to claim 1, which is characterized in that the n
A first inductance is Multiple coil coupling inductance or independent winding inductance.
3. the direct balanced device composite structure of a kind of series connection accumulation power supply according to claim 1, which is characterized in that Mei Ge
The turn ratio of two inductance and each first inductance is k:1, wherein k=1, and 2 ... t, t are the positive integer more than or equal to 1.
4. the direct balanced device composite structure of a kind of series connection accumulation power supply according to claim 1, which is characterized in that Mei Geshuan
Switching tube there are two being set into switch.
5. the direct balanced device composite structure of a kind of series connection accumulation power supply according to claim 4, which is characterized in that described to open
Guan Guanwei metal-oxide-semiconductor.
6. the direct balanced device composite structure of a kind of series connection accumulation power supply according to claim 4, which is characterized in that each
Across in group balance module, the drain electrode of described two switching tubes is connect with the both ends of second inductance respectively, described two switches
The source electrode of pipe is connect with the both ends of one energy-storage travelling wave tube respectively.
7. the direct balanced device composite structure of a kind of series connection accumulation power supply according to claim 4, which is characterized in that each
Across in group balance module, described two switching tubes are located at the ipsilateral of second inductance, and the source electrode of described two switching tubes is each other
It is connected, the drain electrode of one of switching tube is connect with one end of second inductance, the drain electrode of another switching tube and described one
One end of a energy-storage travelling wave tube connects, and the other end of one energy-storage travelling wave tube is connect with the other end of second inductance.
8. the direct balanced device composite structure of a kind of series connection accumulation power supply according to claim 6 or 7, which is characterized in that institute
Stating an energy-storage travelling wave tube is capacitor.
9. the direct balanced device composite structure of a kind of series connection accumulation power supply according to claim 6 or 7, which is characterized in that institute
Stating an energy-storage travelling wave tube is single battery.
10. the direct balanced device composite structure of a kind of series connection accumulation power supply according to claim 6 or 7, which is characterized in that institute
Stating an energy-storage travelling wave tube is series-connected cell group.
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Application publication date: 20190614 |