CN108281993A - A kind of improved striding capacitance equalizing circuit and its equalization methods - Google Patents
A kind of improved striding capacitance equalizing circuit and its equalization methods Download PDFInfo
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- CN108281993A CN108281993A CN201711298804.4A CN201711298804A CN108281993A CN 108281993 A CN108281993 A CN 108281993A CN 201711298804 A CN201711298804 A CN 201711298804A CN 108281993 A CN108281993 A CN 108281993A
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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
- H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
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Abstract
The invention discloses a kind of improved striding capacitance equalizing circuit and its equalization methods, including series battery, single-pole double-throw switch (SPDT) group, several LC series connection accumulations circuits, 1 switch controller, several way switch driving circuits；Series battery is composed in series by several batteries, and the battery in series battery can be any one in secondary cell, including lithium ion battery, lead-acid battery, ultracapacitor or Ni-MH battery, is to receive balanced main body.The present invention is by using LC series circuits, and equalizing circuit switching frequency is controlled according to practical situation, realize that switch open and close moment circuital current is zero, switching loss is substantially reduced, equalization efficiency is improved, series-connected cell is placed under charging voltage, single-pole double-throw switch (SPDT) is controlled by master switch, the equilibrium to battery is realized in the charge and discharge process of LC series circuits, is suitable for field of lithium, it is safe and efficient.
Description
Technical field
The present invention relates to field of lithium, more particularly to a kind of improved striding capacitance equalizing circuit and its equilibrium side
Method.
Background technology
Lithium battery is increasingly being used for as a kind of widely used energy source in daily life, but single battery
Energy storage is limited or the charging time is long, so multiple battery combinations would generally be used for battery pack, in addition to being convenient for changing,
It is relatively reliable outer, the charging time is greatly saved, extends battery.But its problem is it is also obvious that power battery pack
After multiple charge and discharge cycles, the distribution of the residual capacity of each battery cell will substantially will appear the case where height differs,
If not being subject to balancing battery group due to internal resistance difference etc., will appear the non-uniform problem of charging when in use will be susceptible to
It overcharges and crosses and put phenomenon and then make battery-heating, energy loss influences service life and even causes fire, in order to improve battery
The problem of inconsistency of group, improves the overall performance of battery pack, then needs to use Balance route,
In existing balanced charging method, using capacitance transfer energy, but in the balanced topology of the striding capacitance, exist
, switching loss relatively high problem larger with shutdown moment electric current, single pulse width modulation period are opened during weighing apparatus
Interior, it is less that capacitance can transmit energy, the longer disadvantage of the balanced topological generally existing time for balance of capacitance, and because in balancing procedure
In, there are higher switching losses in traditional striding capacitance equalizing circuit, so in single pulse width modulation period, capacitance passes
The energy passed will have quite a few consumption on switch, therefore practical time for balance is longer than theoretical time for balance.
Invention content
For prior art disadvantage, one kind is provided switch may be implemented and opened and shutdown moment, the equilibrium that electric current is zero
Circuit and balanced way can substantially reduce switching loss, improve equalization efficiency.
A kind of improved striding capacitance equalizing circuit, including series battery, single-pole double-throw switch (SPDT) group, several LC series connection
Accumulator, 1 switch controller (main control unit, master controller), several way switch driving circuits；Series battery is by several
Battery Bi (i=1,2,3 ... ..., n) is composed in series, and the battery Bi (i=1,2,3 ... ..., n) in series battery can be two
Any one in primary cell, including lithium ion battery, lead-acid battery, ultracapacitor or Ni-MH battery is to receive balanced master
Body；
Single-pole double-throw switch (SPDT) group is composed in series by several single-pole double-throw switch (SPDT) Si；Single-pole double-throw switch (SPDT) Si is by two N-channels
MOSFET pipe series aiding connections form, and the drain D of the first MOSFET pipes is the first Static Contact terminal of single-pole double-throw switch (SPDT) Si
Sia, the source S of the 2nd MOSFET pipes are the second Static Contact list Sib of Si, and the tie point of two MOSFET pipes is the choosing of Si
Select terminal Sic；
Single-pole double-throw switch (SPDT) Si is made of two N-channel MOS FET pipe series aiding connections, and there are three contact terminals, including switch
First Static Contact terminal Sia, the second Static Contact list Sib selects terminal Sic.
LC series connection accumulation circuits are operated under quasi-resonance state, the switching frequency fs of equalizing circuit, according in equalizing circuit
Lumped parameter R, L, C determine, it is ensured that LC series circuits are operated in quasi-resonance state, in each switching time LC series circuits
Current reduction is zero.
Series battery, if being composed in series by dry cell Bi.
Single-pole double-throw switch (SPDT) group shares several single-pole double-throw switch (SPDT) Si, and there are three contact jaws by wherein single-pole double-throw switch (SPDT) Si
Sub switch the first Static Contact terminal Sia, the second Static Contact list Sib select terminal Sic.Single-pole double-throw switch (SPDT) Si is by two
A N-channel MOS FET pipe series aiding connections composition, the source S of the first MOSFET pipes are connected with the drain D of the 2nd MOSFET pipes, hilted broadsword
The drain D of the first MOSFET pipes of the first Static Contact terminal Sia connections of commutator Si, the second of single-pole double-throw switch (SPDT) Si are quiet
State contacts the source S of the 2nd MOSFET pipes of list Sib connections, and single-pole double-throw switch (SPDT) Si's selects terminal Sic for two MOSFET
The tie point (the drain D junction of the source S and the 2nd MOSFET pipes of the first MOSFET pipes) of pipe.The first Static Contact of switch
Terminal Sia is connected with the anode of battery Bi, and the second Static Contact list Sib is connected with the cathode of battery Bi.Select terminal Sic with
LC series connection accumulation circuits are connected.Selection terminal Sic is connect with capacitance Ci and inductance Li-1.
LC series connection accumulations circuit is composed in series by a capacitance Ci and an inductance Li.The one end capacitance Ci and selection terminal
Sic, inductance Li-1 connections, the capacitance Ci other ends are connected with inductance Li.
The grid G of first MOSFET pipes, the grid G of the 2nd MOSFET pipes are controlled by switch driving circuit and switch respectively
Device (main control unit, master controller) connects.
Further, in some embodiments, the series battery is made of concatenated 4 batteries B1, B2, B3, B4,
Single-pole double-throw switch (SPDT) group is made of concatenated 4 single-pole double-throw switch (SPDT)s S1, S2, S3, S4, and LC series connection accumulations circuit is by concatenated 3
A concatenated lc circuit C1+L1, C2+L2, C3+ L3 composition (capacitance C series inductance L), 1 switch controller, 4 way switch drive
Dynamic circuit；
The first unit of LC series connection accumulation circuits is composed in series by capacitance C1 and inductance L1 (C1+L1), the one end capacitance C1 with
The selection terminal S1c connections of single-pole double-throw switch (SPDT) S1, the capacitance C1 other ends are connected with inductance L1；Inductance L1 is far from capacitance C1's
The other end connects the selection terminal S2c of capacitance C2 and single-pole double-throw switch (SPDT) S2；The second Static Contact list of single-pole double-throw switch (SPDT) S1
Sub- S1b connections battery B1 cathode, the first Static Contact terminal S1a connections battery B1 anodes and hilted broadsword of single-pole double-throw switch (SPDT) S1 are double
The second Static Contact list S2b of throw switch S2；
The second unit of LC series connection accumulation circuits is composed in series by capacitance C2 and inductance L2 (C2+L2), the one end capacitance C2 with
Terminal S2c, inductance L1 connections, the capacitance C2 other ends is selected to be connected with inductance L2；Other end connections of the inductance L2 far from capacitance C2
Select terminal S3c and capacitance C3；The second Static Contact list S2b connection battery B2 cathode of single-pole double-throw switch (SPDT) S2, hilted broadsword are double
Second Static Contact list of the first Static Contact terminal S2a connections battery B2 anodes and single-pole double-throw switch (SPDT) S3 of throw switch S2
S3b；
The third unit of LC series connection accumulation circuits is composed in series by capacitance C3 and inductance L3, the one end capacitance C3 and selection terminal
S3c, inductance L2 connections, the capacitance C3 other ends are connected with inductance L3；Other end connection selection terminals of the inductance L3 far from capacitance C3
S4c；The second Static Contact list S4b connection battery B4 cathode of single-pole double-throw switch (SPDT) S4, the first Static Contact terminal S4a connect
Connect battery B4 anodes；Second Static Contact list S3b connection battery B3 cathode, the first Static Contact terminal S3a connection batteries B3
Anode；
The grid G of all single-pole double-throw switch (SPDT) Si passes through switch driving circuit connecting valve controller, switch control respectively
Device is equipped with independent control module 104-a, 104-b etc..
Switch controller can acquire each cell voltage, send out pwm signal, drive conducting and the closure of single-pole double-throw switch (SPDT),
The contact of control selections terminal Sic and the first Static Contact terminal Sia, the second Static Contact list Sib of switch.
By controlling the conducting and shutdown of single-pole double-throw switch (SPDT) group difference switch, energy between arbitrary two batteries may be implemented
Amount exchanges.
A kind of equalization methods of improved striding capacitance equalizing circuit, method are as follows：
Cell voltage is measured, in N batteries, when Bj voltage highests, battery Bi minimum energies (assuming that N>=j>i>=
1), single-pole double-throw switch (SPDT) Sj and Si (control switchs) throw its high contact terminal (i.e. Sjc and Sja are closed, and selection terminal Sic and is opened
The first Static Contact terminal Sia is closed to be closed), circuit (Ci+Li ... ... Cj-1+Lj-1) and series electrical in LC series connection accumulation circuits
Battery (Bi+1 ..Bj) is in parallel in the group of pond, LC series connection accumulation circuit energy storage；
After half of PWM cycle, Sj and Si are thrown low contact terminal, and (i.e. Sjc and Sjb is closed, and selects terminal Sic and second
Static Contact list Sib is closed), in LC series connection accumulation circuits circuit (Ci+ Li ... ... Cj-1+Lj-1) in series battery
Battery (Bi ... Bj-1) is in parallel, and LC series connection accumulation circuits release energy；In this PWM cycle, battery Bj is by energy transmission
LC series connection accumulation circuits are given, then LC series connection accumulations circuit transfers energy to battery Bi, realizes energy from the highest Bj of voltage
Pass to the minimum battery Bi of voltage.
Above-mentioned steps are iteratively repeated, are achieved the effect that battery balanced.
Mark Bi (i=1,2,3 ... ..., n), Si (i=1,2,3 ... ..., n) if indicate dry cell, single-pole double-throw switch (SPDT),
Bi, Si is marked to indicate that i-th of battery, single-pole double-throw switch (SPDT), label Bj, Sj indicate j-th of battery, single-pole double-throw switch (SPDT)；
Label i+1, j-1 are respectively digital number, and i+1 indicates that numerical value i adds 1, j-1 to indicate that numerical value j subtracts 1.
The present invention controls equalizing circuit switching frequency by using LC series circuits, and according to practical situation, realizes switch
Open and close moment circuital current is zero, substantially reduces switching loss, improves equalization efficiency.Series-connected cell is placed in charging electricity
Pressure, single-pole double-throw switch (SPDT) is controlled by master switch, and the equilibrium to battery is realized in the charge and discharge process of LC series circuits.It is suitable
It is safe and efficient for field of lithium.
Description of the drawings
Fig. 1 is traditional striding capacitance circuit diagram；
Fig. 2 is the circuit diagram of the present invention；
Fig. 3 is the single-pole double-throw switch (SPDT) structural schematic diagram of circuit of the present invention；
Fig. 4 is the lc circuit structural schematic diagram of circuit of the present invention；
Current flow paths figure when Fig. 5 is circuit charging of the present invention；
Fig. 6 is the current flow paths figure of the LC accumulator balancing procedures of circuit of the present invention；
Fig. 7 is the voltage and current variation diagram of traditional striding capacitance circuit；
Fig. 8 is the voltage and current variation diagram of circuit of the present invention；
Fig. 9 is the voltage change figure of traditional striding capacitance circuit battery；
Figure 10 is the voltage change figure of circuit battery of the present invention.
Specific implementation mode
For that can further appreciate that the feature, technological means and the specific purposes reached, function of the present invention, with reference to
Attached drawing is described in further detail the present invention with specific implementation mode.
It please referring to Fig.1, Fig. 2, Fig. 3, Fig. 4, the present embodiment includes series battery 101, single-pole double-throw switch (SPDT) group 102, if
Dry LC series connection accumulations 103,1 switch controller 104 (main control unit) of circuit, several way switch driving circuits 105.
Battery Bi (i=1,2,3 ... ..., n) in series battery 101, can be secondary cell, including lithium ion battery,
Any one in lead-acid battery, ultracapacitor or Ni-MH battery.
Single-pole double-throw switch (SPDT) group 102 is made of several single-pole double-throw switch (SPDT) Si (i=1,2,3 ... ..., n), and single-pole double throw is opened
Si is closed to be made of two MOSFET pipe series aiding connections, there are three contact terminal, including switch the first Static Contact terminal Sia, the
Two Static Contact list Sib select terminal Sic.The drain D of first MOSFET pipes is that the first static state of single-pole double-throw switch (SPDT) Si connects
The sub- Sia of contravention, the source S of the 2nd MOSFET pipes are the second Static Contact list Sib of Si, and the tie point of two MOSFET pipes is
The selection terminal Sic of Si.Switch controller 104 is equipped with independent control module 104-a, 104-b etc., the first MOSFET pipes
Grid G link control module 104-a, the grid G link control module 104-b of the 2nd MOSFET pipes.
LC series connection accumulations circuit 103 is operated under quasi-resonance state, the switching frequency fs of equalizing circuit, according to equalizing circuit
In lumped parameter R, L, C determine, it is ensured that LC series connection accumulations circuit 103 is operated in quasi-resonance state, in each switching time LC
The current reduction of series connection accumulation circuit 103 is zero.
Series battery 101 is composed in series by several batteries.
Single-pole double-throw switch (SPDT) group 102 shares several switches.There are three contact terminals by wherein single-pole double-throw switch (SPDT) Si：First is quiet
State contact terminal Sia, the second Static Contact list Sib select terminal Sic.Single-pole double-throw switch (SPDT) Si is by two N-channels
MOSFET pipes are composed in series, and the source S of the first MOSFET pipes is connected with the drain D of the 2nd MOSFET pipes, and the first static state of switch connects
The drain D of sub- the first MOSFET pipes of Sia connections of contravention, the source S of the 2nd MOSFET pipes of the second Static Contact list Sib connections,
Select terminal Sic for the linking point of two MOSFET pipes.The positive phase of the first Static Contact terminal Sia and battery Bi of switch
Even, the second Static Contact list Sib is connected with the cathode of battery Bi.Selection terminal Sic is connected with LC series connection accumulations circuit 103.
Selection terminal Sic is connect with capacitance Ci and inductance Li-1.
LC series connection accumulations circuit 103 is composed in series by a capacitance Ci and an inductance Li.The one end capacitance Ci and selection end
Sub- Sic, inductance Li-1 connections, the capacitance Ci other ends are connected with inductance Li.
Switch controller 104 includes battery voltage acquisition device and PWM signal generator, is used for control selections terminal Sic
With the contact of switch the first Static Contact terminal Sia, the second Static Contact list Sib, to drive single-pole double-throw switch (SPDT) Si's
Conducting and closure.
By controlling the conducting and shutdown of the different switches of single-pole double-throw switch (SPDT) group 102, may be implemented arbitrary two batteries it
Between energy exchange.
To understand the balanced way of invention, Fig. 5, Fig. 6 are please referred to：
The first step measures cell voltage, in N batteries, when Bj voltage highests, battery Bi minimum energies (assuming that N>
=j>i>=1), single-pole double-throw switch (SPDT) Sj and Si (control switchs) throws its high contact terminal (i.e. Sjc and Sja closures, selection end
Sub- Sic and switch the first Static Contact terminal Sia closures), circuit (Ci+Li ... ... the Cj-1 in LC series connection accumulations circuit 103
+ Lj-1), LC series connection accumulation circuit 103 circuit energy storage in parallel with battery (Bi+1 ..Bj) in series battery 101.
Second step, after half of PWM cycle, Sj and Si are thrown low contact terminal, and (i.e. Sjc and Sjb is closed, and selects terminal
Sic and the second Static Contact list Sib are closed).Circuit (Ci+Li ... ... Cj-1+Lj-1) in LC series connection accumulations circuit 103
In parallel with battery in series battery 101 (Bi ... Bj-1), LC series connection accumulations circuit 103 releases energy.At this PWM weeks
In phase, battery Bj transfers energy to LC series connection accumulations circuit 103, and then LC series connection accumulations circuit 103 transfers energy to electricity
Pond Bi realizes that energy passes to the minimum battery Bi of voltage from the highest Bj of voltage.
Above-mentioned steps are iteratively repeated, are achieved the effect that battery balanced.
To show the specific effect of the present invention, Fig. 7, Fig. 8, Fig. 9, Figure 10 are please referred to：
In connecting and disconnecting of the circuit, circuital current size suddenly change can be seen original striding capacitance circuit in the figure 7
Go out, size of current directly reaches 0.15 ampere, and circuital current size is also then quickly to reduce；In fig. 8, same balanced
Under the conditions of, using circuit of the present invention, size of current is 0 when connecting and disconnecting of the circuit, and generate electricity curve relative smooth, and circuital current size becomes
Change smaller.
The present invention controls equalizing circuit switching frequency by using LC accumulators, and according to practical situation, realizes switch
Open and close moment circuital current is zero, substantially reduces switching loss, improves equalization efficiency.Dongguan is obtained in present invention research and development
Introduction innovation Research Team of city programme support (project number:2014607119) Supported by DongGuan
Innovative Research team(NO.2014607119)。
In a wherein specific embodiment, series battery 101 is made of concatenated 4 batteries B1, B2, B3, B4,
Single-pole double-throw switch (SPDT) group 102 is made of concatenated 4 single-pole double-throw switch (SPDT)s S1, S2, S3, S4, LC series connection accumulations circuit 103 by
Concatenated 3 concatenated lc circuit C1+L1, C2+ L2, C3+L3 compositions (capacitance C series inductance L), 1 switch controller 104,
4 way switch driving circuits 105；
The first unit of LC series connection accumulations circuit 103 is composed in series by capacitance C1 and inductance L1 (C1+L1), the one end capacitance C1
It is connect with the selection terminal S1c of single-pole double-throw switch (SPDT) S1, the capacitance C1 other ends are connected with inductance L1；Inductance L1 is far from capacitance C1's
The other end connects the selection terminal S2c of capacitance C2 and single-pole double-throw switch (SPDT) S2；The second Static Contact list of single-pole double-throw switch (SPDT) S1
Sub- S1b connections battery B1 cathode, the first Static Contact terminal S1a connections battery B1 anodes and hilted broadsword of single-pole double-throw switch (SPDT) S1 are double
The second Static Contact list S2b of throw switch S2；
The second unit of LC series connection accumulations circuit 103 is composed in series by capacitance C2 and inductance L2 (C2+L2), the one end capacitance C2
It is connect with selection terminal S2c, inductance L1, the capacitance C2 other ends are connected with inductance L2；The other ends of the inductance L2 far from capacitance C2 connects
Terminal S3c and capacitance C3 are selected in selecting；The second Static Contact list S2b connection battery B2 cathode of single-pole double-throw switch (SPDT) S2, hilted broadsword
Second Static Contact list of the first Static Contact terminal S2a connections battery B2 anodes and single-pole double-throw switch (SPDT) S3 of commutator S2
Sub- S3b；
The third unit of LC series connection accumulations circuit 103 is composed in series by capacitance C3 and inductance L3, the one end capacitance C3 and selection
Terminal S3c, inductance L2 connections, the capacitance C3 other ends are connected with inductance L3；Other end connection selections of the inductance L3 far from capacitance C3
Terminal S4c；The second Static Contact list S4b connection battery B4 cathode of single-pole double-throw switch (SPDT) S4, the first Static Contact terminal S4a
Connect battery B4 anodes；Second Static Contact list S3b connection battery B3 cathode, the first Static Contact terminal S3a connection batteries
B3 anodes；
The grid G of all single-pole double-throw switch (SPDT) Si passes through 105 connecting valve controller 104 of switch driving circuit respectively.
In addition, balanced, time for balance 0.995s is carried out using traditional two battery of striding capacitance circuit pair in fig.9,
In Fig. 10, using same condition, but the equalizing circuit and equalization methods of the present invention is used, time for balance is reduced to
0.735s, the efficiency for improving 26% more originally.
The present invention controls equalizing circuit switching frequency by using LC series circuits, and according to practical situation, realizes switch
Open and close moment circuital current is zero, substantially reduces switching loss, improves equalization efficiency.Including series battery, hilted broadsword
Series-connected cell is placed in charging by commutator group, several LC series circuits, 1 switch controller, several way switch driving circuits
Under voltage, single-pole double-throw switch (SPDT) is controlled by master switch, the equilibrium to battery is realized in the charge and discharge process of LC series circuits.
It is therefore seen that the present invention is safer, and equalization efficiency is high.
One embodiment of the present invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Cannot the limitation to the scope of the claims of the present invention therefore be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (3)
1. a kind of improved striding capacitance equalizing circuit, which is characterized in that including series battery (101), single-pole double-throw switch (SPDT)
Group (102), several LC series connection accumulations circuits (103), 1 switch controller (104), several way switch driving circuits (105), string
Join battery pack (101) if being composed in series by dry cell Bi (i=1,2,3 ..., n)；
Single-pole double-throw switch (SPDT) group (102) is composed in series by several single-pole double-throw switch (SPDT) Si (i=1,2,3 ..., n)；Single-pole double throw
Switch Si is made of two N-channel MOS FET pipe series aiding connections, and the drain Ds of the first MOSFET pipes is the of single-pole double-throw switch (SPDT) Si
One Static Contact terminal Sia, the second Static Contact list Sib that the source Ss of the 2nd MOSFET pipes is Si, two MOSFET pipes
Tie point is the selection terminal Sic of Si；
The source S of first MOSFET pipes is connected with the drain D of the 2nd MOSFET pipes, the first Static Contact of single-pole double-throw switch (SPDT) Si
The drain D of the first MOSFET pipes of terminal Sia connections, the second Static Contact list Sib connections second of single-pole double-throw switch (SPDT) Si
The source S of MOSFET pipes, single-pole double-throw switch (SPDT) Si's selects terminal Sic for the linking point of two MOSFET pipes；Switch first is quiet
State contact terminal Sia is connected with the anode of battery Bi, and the second Static Contact list Sib is connected with the cathode of battery Bi；Select end
Sub- Sic is connected with LC series connection accumulations circuit (103), and terminal Sic is selected to be connect with capacitance Ci；
The grid G of first MOSFET pipes, the grid G of the 2nd MOSFET pipes are controlled by switch driving circuit (105) and switch respectively
Device (104) connection processed；
The LC series connection accumulations circuit (103) is composed in series by a capacitance Ci and an inductance Li, the one end capacitance Ci and selection
Terminal Sic, inductance Li-1 connections, the capacitance Ci other ends are connected with inductance Li；
The switch controller (104) includes battery voltage acquisition device and PWM signal generator, is used for control selections terminal
The contact of Sic and the first Static Contact terminal Sia, the second Static Contact list Sib, to drive leading for single-pole double-throw switch (SPDT) Si
Logical and closure.
2. a kind of balanced way of improved striding capacitance equalizing circuit according to claim 1, which is characterized in that described
Series battery (101) is made of concatenated 4 batteries B1, B2, B3, B4, and single-pole double-throw switch (SPDT) group (102) is by concatenated 4
Single-pole double-throw switch (SPDT) S1, S2, S3, S4 composition, LC series connection accumulations circuit (103) by concatenated 3 concatenated lc circuit C1+L1,
C2+L2, C3+L3 are formed, 1 switch controller (104), 4 way switch driving circuits (105)；
The first unit of LC series connection accumulations circuit (103) is composed in series by capacitance C1 and inductance L1 (C1+L1), the one end capacitance C1 with
The selection terminal S1c connections of single-pole double-throw switch (SPDT) S1, the capacitance C1 other ends are connected with inductance L1；Inductance L1 is another far from capacitance C1's
One end connects the selection terminal S2c of capacitance C2 and single-pole double-throw switch (SPDT) S2；The second Static Contact list of single-pole double-throw switch (SPDT) S1
S1b connection battery B1 cathode, the first Static Contact terminal S1a connection batteries B1 anodes and single-pole double throw of single-pole double-throw switch (SPDT) S1
The second Static Contact list S2b of switch S2；
The second unit of LC series connection accumulations circuit (103) is composed in series by capacitance C2 and inductance L2 (C2+L2), the one end capacitance C2 with
Terminal S2c, inductance L1 connections, the capacitance C2 other ends is selected to be connected with inductance L2；Other end connections of the inductance L2 far from capacitance C2
Select terminal S3c and capacitance C3；The second Static Contact list S2b connection battery B2 cathode of single-pole double-throw switch (SPDT) S2, hilted broadsword are double
Second Static Contact list of the first Static Contact terminal S2a connections battery B2 anodes and single-pole double-throw switch (SPDT) S3 of throw switch S2
S3b；
The third unit of LC series connection accumulations circuit (103) is composed in series by capacitance C3 and inductance L3, the one end capacitance C3 and selection end
Sub- S3c, inductance L2 connections, the capacitance C3 other ends are connected with inductance L3；Other end connection selection ends of the inductance L3 far from capacitance C3
Sub- S4c；The second Static Contact list S4b connection battery B4 cathode of single-pole double-throw switch (SPDT) S4, the first Static Contact terminal S4a connect
Connect battery B4 anodes；Second Static Contact list S3b connection battery B3 cathode, the first Static Contact terminal S3a connection batteries B3
Anode；
The selection terminal Sic of all single-pole double-throw switch (SPDT) Si passes through switch driving circuit (105) connecting valve controller respectively
(104)。
3. a kind of equalization methods using improved striding capacitance equalizing circuit described in claim 1~2, method is as follows：
Cell voltage is measured, in N batteries, when Bj voltage highests, battery Bi minimum energies, single-pole double-throw switch (SPDT) Sj and Si
Its high contact terminal is thrown, LC series connection accumulations circuit (103) is in parallel with series battery, LC series connection accumulations circuit (103) energy storage；
After half of PWM cycle, Sj and Si are thrown into low contact terminal, LC series connection accumulations circuit (103) is in parallel with battery pack, LC strings
Connection accumulator (103) releases energy, and in this PWM cycle, battery Bj transfers energy to LC series connection accumulation circuits
(103), then LC series connection accumulations circuit (103) transfers energy to battery Bi, realizes that energy is passed to from the highest Bj of voltage
The minimum battery Bi of voltage；
It is iteratively repeated the above-mentioned first step and second step, is achieved the effect that battery balanced.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711298804.4A CN108281993B (en) | 2017-12-08 | 2017-12-08 | Improved flying capacitor equalization circuit and equalization method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711298804.4A CN108281993B (en) | 2017-12-08 | 2017-12-08 | Improved flying capacitor equalization circuit and equalization method thereof |
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| CN108281993A true CN108281993A (en) | 2018-07-13 |
| CN108281993B CN108281993B (en) | 2021-06-18 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112838624A (en) * | 2019-11-22 | 2021-05-25 | 圣邦微电子（北京）股份有限公司 | Power supply circuit |
| CN114643869A (en) * | 2022-02-16 | 2022-06-21 | 清华大学 | Battery pack and management method of battery pack |
| US20220247310A1 (en) * | 2021-01-30 | 2022-08-04 | Ernest Henry Wittenbreder, Jr. | Zero Voltage Switching Flying Capacitor Power Converters |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105576719A (en) * | 2014-10-08 | 2016-05-11 | 香港理工大学 | Voltage balancing circuit |
-
2017
- 2017-12-08 CN CN201711298804.4A patent/CN108281993B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105576719A (en) * | 2014-10-08 | 2016-05-11 | 香港理工大学 | Voltage balancing circuit |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112838624A (en) * | 2019-11-22 | 2021-05-25 | 圣邦微电子（北京）股份有限公司 | Power supply circuit |
| CN112838624B (en) * | 2019-11-22 | 2024-02-06 | 圣邦微电子（北京）股份有限公司 | Power supply circuit |
| US20220247310A1 (en) * | 2021-01-30 | 2022-08-04 | Ernest Henry Wittenbreder, Jr. | Zero Voltage Switching Flying Capacitor Power Converters |
| US11515789B2 (en) * | 2021-01-30 | 2022-11-29 | Ernest Henry Wittenbreder, Jr. | Zero voltage switching flying capacitor power converters |
| CN114643869A (en) * | 2022-02-16 | 2022-06-21 | 清华大学 | Battery pack and management method of battery pack |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108281993B (en) | 2021-06-18 |
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