CN209217739U - A kind of active equalization of battery device containing AC module - Google Patents
A kind of active equalization of battery device containing AC module Download PDFInfo
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- CN209217739U CN209217739U CN201821639486.3U CN201821639486U CN209217739U CN 209217739 U CN209217739 U CN 209217739U CN 201821639486 U CN201821639486 U CN 201821639486U CN 209217739 U CN209217739 U CN 209217739U
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Abstract
The utility model proposes a kind of active equalization of battery device containing AC module, including battery pack, inversion unit, balanced unit, the inversion unit input terminal is connected with the anode B+ of battery pack and battery cathode B-, the input terminal of the output end of inversion unit and all balanced units is connected in series, forming circuit；The cathode output end and cathode output end of balanced unit are connected with the positive and negative anodes of wanted balanced battery cell respectively；The structure of inversion unit is bridge inverter main circuit, semibridge system inversion single channel, recommends inverse formula power transformation road and other kinds of single-phase inversion circuit；Balanced unit is the rectification circuit containing half-wave rectifying circuit, full-wave rectifying circuit, full bridge rectifier and other types.The device can carry out simultaneously Balance route to any number of single batteries, and equalization efficiency is high, in addition to inversion unit；High-speed power switching device is not needed, at low cost, control simple and flexible, fever are low, it is only necessary to controllable switch identical with single battery quantity.
Description
Technical field
The utility model relates to a kind of active equalization of battery device containing AC module, belongs to the associated batteries such as lithium battery
Management system especially connects to multiple single batteries and carries out balanced equalizing circuit.
Background technique
With the development of lithium battery and energy storage technology, the requirement to battery management system is also higher and higher.Multiple monomer electricity
Pond series connection can lead to the problem of unbalanced since the performance of single battery itself is inconsistent in charge and discharge process, will cause battery
Aging, influence service life and the safety of battery.
Carrying out balanced method to battery at present mainly has passive type equalization methods and active equalization methods.It is wherein passive
Formula equalization methods are mainly resistance consuming type, and in an each single battery shunt resistance in parallel, energy consumption equilibrium is exactly that will hold
Extra energy consumption is fallen in the more battery of amount, realizes the equilibrium of whole group cell voltage.Such as Chinese patent CN102457078A,
CN106329667A, CN102195314A, CN107492924A, CN108063473A individually disclose several various forms of consumptions
It can formula equalizing circuit and its control method.Consuming type equilibrium, which can not only consume valuable energy, can also cause system heat generation.
Active equalization method be by monomer energy it is high to be transferred to monomer energy low, or with whole group energy supplement to monomer
Minimum battery needs an energy storage link in implementation process, energy is allowed to re-start distribution by this link well.It is Chinese special
Sharp CN 207098716U, CN103248077A, CN105391130A, CN102111003A, CN104113110A disclose several
Kind use inductive energy storage battery equalizing circuit, and CN107994651A,
CN103051029A, CN107579575A, CN107317376A, CN106816930A disclose several using capacitor
The battery equalizing circuit of energy storage.No matter using inductive energy storage or using capacitive energy storage, the power of multiple high-speed switches is required
Switching device, higher cost, control are complicated, and cannot carry out Balance route, therefore equalization efficiency to any single battery simultaneously
It is lower.
Chinese patent CN104577227A, CN104201743, CN107785957A, CN107834655A disclose several
Using transformer isolation or DC/DC converter centralization active equalization circuit is used, due to only with a transformer equilibrium
All single batteries, therefore transformer tapping is more, fabrication and installation are difficult, the variation of improper battery pack.Furthermore it needs multiple high
Fast device for power switching, control at high cost are complicated.And multiple any single batteries cannot be carried out simultaneously balanced.
In conclusion passive type equalizing circuit has the energy that can not only consume preciousness in the prior art, but also can draw
Play the problems such as system heat generation.Active equalization needs multiple high-speed power switching devices, and at high cost, control complexity needs to dissipate
Heat, cannot multiple any single batteries balanced simultaneously, equalization efficiency it is low.
Utility model content
The purpose of this utility model is to provide for a kind of battery balanced device containing AC module, with prior art phase
Than can any number of single batteries be carried out with Balance route simultaneously, equalization efficiency is high, in addition to inversion unit, does not need high speed
Device for power switching, at low cost, control simple and flexible, fever are low, it is only necessary to which controllable switch identical with single battery quantity is
It can.
The technical solution that the utility model is taken are as follows:
In order to achieve the above object, a kind of battery balanced device containing AC module of the utility model, including battery pack,
Inversion unit, balanced unit, battery pack include anode B+, battery cathode B-, which is characterized in that the battery pack is also wrapped
Include detection line, equilibrium line；The inversion unit includes input, output end, the anode B+ and electricity of input terminal and battery pack
Pond cathode B- is connected；The balanced unit includes input terminal, cathode output end, cathode output end, the output end of inversion unit
It is connected in series with the input terminal of all balanced units, forming circuit；The cathode output end and cathode output end of the balanced unit
It is connected respectively with the positive and negative anodes of wanted balanced battery cell；The structure of the inversion unit is bridge inverter main circuit, half-bridge
Formula inversion single channel recommends inverse formula power transformation road and other kinds of single-phase inversion circuit；The balanced unit is whole containing half-wave
Current circuit, full-wave rectifying circuit, full bridge rectifier and other types rectification circuit.
The bridge type inverse unit further includes the first power switch, the second power switch, third power switch, the 4th power
Switch, current sensor, outputting inductance；First power switch, the second power switch, third power switch, the 4th power
Switch composition single-phase bridge inverter circuit, current sensor detect the output electric current on outputting inductance, carry out Current Feedback Control.
The semibridge system inversion unit further includes the first power switch, the second power switch, current sensor, the first electricity
Hold, the second capacitor, outputting inductance；First power switch, the second power switch and first capacitor, the second capacitor composition are single-phase
Half bridge inverter circuit, current sensor detect the output electric current on outputting inductance, carry out Current Feedback Control.
The full-wave rectifying type balanced unit further includes transformer, the first rectifier diode, the second rectifier diode, filtering
Inductance, bypass controllable switch；It is connected after the primary side parallel connection bypass controllable switch of the transformer with input terminal, bypass is controllably opened
When closing connection, the primary side of transformer is bypassed, the subcarrier band centre cap of transformer, the primary side of the transformer and each secondary side
The number of turns it is identical, with the first rectifier diode, the second rectifier diode form full-wave rectifying circuit, the anode of the rectification circuit
Output end is connected after filter inductance with cathode output end, and the cathode of the rectification circuit is connected with cathode output end.
The full-bridge rectification formula balanced unit further includes transformer, the first rectifier diode, the second rectifier diode, filtering
Inductance, bypass controllable switch, third rectifier diode, the 4th rectifier diode；The primary side parallel connection bypass of the transformer is controllable
It is connected after switch with input terminal 36, when bypass controllable switch is connected, the primary side of transformer is bypassed, the secondary Bian Yu of transformer
One rectifier diode, the second rectifier diode, third rectifier diode, the 4th rectifier diode form full bridge rectifier, institute
The cathode output end for stating rectification circuit is connected after filter inductance with cathode output end, the cathode of the rectification circuit and negative
Pole output end is connected.
The bypass controllable switch is in parallel with the primary side of transformer, is mounted between the primary side of transformer and rectification circuit,
When road controllable switch is connected, the primary side of transformer is shorted.
Forming circuit is connect with the output end of inversion unit after the primary side series connection of all transformers in the balanced unit；
Bypass controllable switch in the balanced unit is stopped by the control to bypass controllable switch when bypassing controllable switch and connecting
The only equalization operation to the battery cell connected carries out the battery cell connected when bypassing controllable switch and disconnecting balanced
Charging.
The inversion unit carries out current feedback by current sensor, to control euqalizing current size.
By the control to balanced unit, Balance route can be carried out to 1 to n-1 battery cell simultaneously, wherein n is
Battery cell number, n are the integer more than or equal to 1.
The input terminal of the inversion unit can also be connected with independent external power supply.
The beneficial effects of the utility model are:
The battery balanced device containing AC module is reduced energy content of battery loss, is reduced using active equalization control mode
Equalizing resistance fever；Balance route is carried out using AC module, a small number of high frequency power switching devices are used only, cost drops significantly
It is low, control simple and flexible；Each balanced unit uses independent high frequency transformer, and structure is simple, easy for installation, can be arbitrarily more
A battery series connection is balanced, realizes the electrical isolation of active equalization power supply and single battery, more securely and reliably；It can be to any 1
Equalization operation is carried out simultaneously to n-1 single battery, wherein n is the number of single battery in battery pack；Utilize the controllable of low frequency
Switch even relay etc. can bypass balanced unit, without using high frequency power switching device to equalizing circuit
It is controlled, makes to control greatly simplified, reduce system cost；To battery carry out Balance route while, can continue to
Battery pack electric energy supplement, makes battery while reaching equilibrium, also reaches full state.
Detailed description of the invention
Fig. 1 tradition consuming type equalizing circuit schematic diagram；
Fig. 2 traditional inductance stored energy transfer formula equalizing circuit schematic diagram；
Fig. 3 traditional capacitance stored energy transfer formula equalizing circuit schematic diagram；
Fig. 4 conventional monomer to group an energy transfer formula equalizing circuit schematic diagram；
Fig. 5 traditional group is to monomer energy transfer formula equalizing circuit schematic diagram；
Fig. 6 is the utility model equalizing circuit schematic diagram；
Fig. 7 is bridge-type inversion unit schematic diagram in the utility model；
Fig. 8 is semibridge system inversion unit schematic diagram in the utility model；
Fig. 9 is the full-wave rectifying type balanced unit schematic diagram that can be bypassed in the utility model；
Figure 10 is the full-bridge rectification formula balanced unit schematic diagram that primary side can bypass in the utility model；
Figure 11 is the full-bridge rectification formula balanced unit schematic diagram that secondary side can bypass in the utility model；
Figure 12 is active equalization device application example in the utility model；
Figure 13 is that independent external power supply application example is connect in the utility model.
In attached drawing, component representated by each label:
1, battery pack, 2, inversion unit, 3, balanced unit, 4, external power supply, 101, detection line；102, equilibrium line, 201,
First power switch, 202 second power switch, 203, third power switch, the 204, the 4th power switch, 205, current sense
Device；206, input terminal one, 207, output terminal, 208, first capacitor, the 209, second capacitor, 210, outputting inductance, 301, transformation
Device, the 302, first rectifier diode, the 303, second rectifier diode, 304, filter inductance, 305, bypass controllable switch, 306,
Input terminal two, 307, cathode output end, 308, cathode output end, 309, third rectifier diode, the 310, the 4th rectifier diode.
Specific embodiment
The utility model is described further with reference to the accompanying drawing.
In the battery management system (bms) that lithium battery is representative, Balance route is single battery equalizaing charge, makes electricity
Each battery all reaches balanced consistent state in the group of pond.Balanced unit is the core component of battery management system.Battery is being made
It makes and the inconsistent phenomenon of performance can be generated in use process, performance is inconsistent to will lead to service life reduction and reliability reduction.Tradition
Balanced unit be divided into active equalization and passive balanced two major class.Passive balanced mainly resistance consuming type, in each list
A body battery shunt resistance in parallel, it is exactly to fall energy consumption extra in the battery more than capacity that energy consumption is balanced, realizes whole group
The equilibrium of cell voltage.Traditional consuming type equalizing circuit schematic diagram as shown in Figure 1, battery pack 1 by n single battery series connection group
At the detection line 101 being attached thereto detects the voltage of single battery by detection unit, controls equilibrium line by voltage detecting
102 balanced units connected.Consuming type balanced unit in Fig. 1 is made of bleeder resistance R (i) and control switch S (i),
The wherein n of i=1,2,3 ....Monomer battery voltage is obtained using detection unit, its control switch S is connected to the higher battery of voltage
(i) and by R (i) electric energy it releases, keeps the voltage of the single battery consistent with other monomers cell voltage.It is thus white
It is white to consume the electric energy stored in battery, so that bleeder resistance R (i) is generated heat.
Fig. 2 is traditional inductance stored energy transfer formula equalizing circuit schematic diagram, and S (i) therein is high frequency power switching device, work
Make under HF switch state, usual switching frequency is greater than 10kHz, therefore S (i) has biggish switching loss, and fever is serious.
The equalizing circuit can only carry out electric voltage equalization between two neighboring single battery.For example, if B1 voltage is higher than B2 voltage, just
It controls S1 and carries out chop control, be stored into the electric energy on B1 in L1, and be filled in B2 by D2, it therefore, can only be successively to phase
Adjacent two batteries carry out balanced.If B1 voltage highest, Bn voltage is minimum, then balancing procedure is just very long, equalization efficiency is non-
It is often low, and a large amount of electric energy can be lost in balancing procedure.
It is similar with inductive energy storage for capacitive energy storage transfer type equalizing circuit, see Fig. 3.The energy-storage travelling wave tube of the circuit is capacitor
C(i).S (i) therein is high frequency power switching device, is worked under HF switch state, and usual switching frequency is greater than 10kHz,
Therefore S (i) has biggish switching loss, and fever is serious.The equalizing circuit can only carry out electricity between two neighboring single battery
Pressure is balanced.For example, just controlling S1, S3 and S2 if B1 voltage is higher than B2 voltage, S4 replaces fast conducting.When S1, S3 are connected
When, B1 voltage and the C1 balance of voltage, energy are passed to C1.When S1, S3 are disconnected, and S2, S4 are connected, B2 voltage and C1 voltage are flat
Weighing apparatus, electric energy are passed to B2 by C1, so alternately B1 are back and forth made to reach balanced with B2 voltage.Therefore, changing circuit can only be successively to adjacent
Two batteries carry out balanced.If B1 voltage highest, Bn voltage is minimum, then balancing procedure is just very long, equalization efficiency is very
It is low, and a large amount of electric energy can be lost in balancing procedure.Furthermore if can draw when two neighboring monomer battery voltage difference is larger
Biggish euqalizing current is played, the requirement of requirement and capacitor to device for power switching is all very high.
Fig. 4 is conventional monomer to group energy transfer formula equalizing circuit schematic diagram, and each single battery passes through connected
Converter, be filled with entire battery pack after extra electric energy is boosted.But in order to realize the control of multiple single batteries, become
Depressor production is extremely complex, as soon as each single battery requires a winding, such transformer winding number determines battery
Number, if changing the concatenated number of battery, it is necessary to remake transformer.And the installation of transformer is extremely difficult, around
The consistency of group is also difficult to ensure very much.
Fig. 5 is traditional group to monomer energy transfer formula equalizing circuit schematic diagram, is that the energy of battery pack is passed through converter
It is filled with single battery respectively, thus Balance route selectively cannot be carried out to any battery, so control effect is poor.And
And it is also similar with circuit shown in Fig. 4, there is transformer production difficulty, winding consistency is looked into, the bad problem of portfolio effect.
In order to overcome the above problem, the utility model carries out Balance route to single battery using AC converter respectively,
Its transformer is mutually indepedent, and simple and reliable, makes and easy for installation, flexible.Pass through capacity lagging each into battery pack 1
Battery cell electric energy supplement reaches balanced purpose, and after the completion of battery pack balancing, all battery cells have reached full state.
The present embodiment as shown in fig. 6, the input terminal of inversion unit 2 is connected with the positive and negative anodes of battery pack 1, can also directly with
The positive and negative anodes of charger are connected, and are high-frequency alternating current by DC inverter, then with the input terminal of the balanced unit of series connection 3
It is connected, forms a circuit.The number of balanced unit 3 is identical as the single battery number n in battery pack 1, and balanced unit
3 output end is connected with the positive and negative anodes of corresponding single battery respectively.
In one embodiment, inversion unit 2 uses bridge inverter main circuit, as shown in Figure 7.The bridge type inverse unit 2
Including the first power switch 201, the second power switch 202, third power switch 203, the 4th power switch 204, current sense
Device 205, input terminal 1, output terminal 207, outputting inductance 210.Wherein, power switch can be MOSFET, IGBT or
Other power electronic devices, in the present embodiment, it is only necessary to 4 high-frequency power devices, than the power in traditional equalizing circuit
Device is few very much.First power switch 201, the second power switch 202, third power switch 203, the 4th power switch
204 composition single-phase bridge inverter circuits can be with by current sensor 205 the DC inverter of input at high-frequency alternating current
The output electric current on outputting inductance 210 is detected, according to the electric current fed back, the duty ratio by controlling power switch be can control
The size for exporting electric current is allowed to consistent with to constant current, reaches optimal equalization state.
In one embodiment, inversion unit 2 uses half bridge inverter circuit, as shown in Figure 8.The semibridge system inversion list
Member 2 include the first power switch 201, the second power switch 202, current sensor 205, input terminal 1, output terminal 207,
First capacitor 208, the second capacitor 209, outputting inductance 210.First power switch 201, the second power switch 202 composition
One bridge arm generates high frequency square wave voltage by PWM control mode, and the first capacitor 208, the second capacitor 209 use capacity
Biggish electrolytic capacitor series connection is connected on DC bus, and mid-point voltage approximation is kept constant, and overflows an output from its midpoint
Terminal 207.Current sensor 205 detects the output electric current on outputting inductance 210, carries out Current Feedback Control.Due to the first electricity
Hold the width for the square-wave voltage that the 208, second capacitor 209 divides DC bus composed by input terminal 1, therefore exports
Value is the half of one 206 both end voltage of input terminal, therefore the voltage stress that the device that can reduce balanced unit 3 is born.By
Bridge arm is controlled in only one, therefore there are two required high frequency power switching devices, cost is reduced.
Fig. 9 is the full-wave rectifying type balanced unit schematic diagram bypassed in the present embodiment, and the full-wave rectifying type is balanced
Unit 3, including transformer 301, the first rectifier diode 302, the second rectifier diode 303, filter inductance 304, bypass are controllably
Switch 305, input terminal 2 306, cathode output end 307, cathode output end 308.It takes out at the subcarrier band center of the transformer 301
Head, primary side and it is each it is secondary while identical, or both the number of turns of the number of turns it is close and while primary side the number of turns is more than secondary slightly, to guarantee every
The Balance route of a circuit can be gone on smoothly.The transformer 301 primary side parallel connection bypass controllable switch 305 after with input
2 306 are held to be connected.The bypass controllable switch 305 can be semi-conductor electricity sub switch, be also possible to mechanical relay or
Person's reed switch relay etc..It can control the turn-on and turn-off of bypass controllable switch 305 by controlling signal.Make when by control
When bypassing the connection of controllable switch 305, the primary side of transformer 301 is bypassed, then the monomer electricity that 3 output end of balanced unit is connected
Pond B (i) is without equalization operation.When make to bypass controllable switch 305 by control disconnect when, high frequency that inversion unit 2 is exported
Alternating voltage is transmitted to secondary side by transformer 301, is made into direct current to 3 company, output end institute of balanced unit using rectifying part
The single battery B (i) connect carries out equalization operation.The subcarrier band centre cap of transformer 301, with the first rectifier diode 302,
Two rectifier diodes 303 form full-wave rectifying circuit, and the cathode output end of the rectification circuit is after filter inductance 304 and just
Pole output end 307 is connected.The secondary side centre cap of the transformer 301 is connected with cathode output end 308.
In one embodiment, balanced unit 3 is the full-bridge rectification formula equalizing circuit that primary side can bypass, and sees Figure 10.It is described
The full-bridge rectification formula balanced unit 3 that primary side can bypass, including transformer 301, the first rectifier diode 302, second rectify two poles
Pipe 303, filter inductance 304, bypass controllable switch 305, input terminal 2 306, cathode output end 307, cathode output end 308, the
Three rectifier diodes 309, the 4th rectifier diode 310.The number of turns of the primary and secondary side of the transformer 301 is identical or two
Person's the number of turns is close and primary side the number of turns is more than secondary side slightly.To guarantee that the Balance route of each circuit can be gone on smoothly.It is described
It is connected after the primary side parallel connection bypass controllable switch 305 of transformer 301 with input terminal 2 306.The bypass controllable switch 305 can
To be semi-conductor electricity sub switch, it is also possible to mechanical relay or reed switch relay etc..It can be controlled by controlling signal
The turn-on and turn-off of system bypass controllable switch 305.When making to bypass the connection of controllable switch 305 by control, by transformer 301
Primary side bypass, then the single battery B (i) that 3 output end of balanced unit is connected is without equalization operation.Make side when passing through control
When road controllable switch 305 disconnects, the high-frequency ac voltage that inversion unit 2 is exported is transmitted to secondary side by transformer 301, then passes through
Over commutation part is made into the single battery B (i) that direct current connects 3 output end of balanced unit and carries out equalization operation.It is described whole
Stream part includes the first rectifier diode 302, the second rectifier diode 303, two poles of the rectification of third rectifier diode the 309, the 4th
Pipe 310 forms single phase bridge type rectifier circu, the cathode parallel connection warp of first rectifier diode 302, third rectifier diode 309
It is connected after crossing filter inductance 304 with cathode output end 307, the second rectifier diode the 303, the 4th rectification of the rectification circuit
The anode parallel connection of diode 310 is connected with cathode output end 308.
In one embodiment, the bypass controllable switch 305 of the balanced unit 3 is in parallel with the secondary side of transformer 301,
Between the secondary side of transformer 301 and rectifying part.It can be to the secondary side of transformer 301, that is, the input terminal of rectifying part
It is bypassed.Its effect is in parallel with the primary side of transformer 301 with bypass controllable switch 305, it can control to being connected
Single battery B (i) Balance route, as shown in figure 11.
In the present embodiment, inversion unit 2 and balanced unit 3 as shown in FIG. 6 can use different element circuits, see
Fig. 7,8,9,10,11.In one embodiment, using bridge type inverse unit 2 and 3 institute of full-wave rectifying type balanced unit that can be bypassed
The active equalization device of composition is as shown in figure 12.Wherein active equalization device, it is only necessary to 1 inversion unit 2 and n balanced list
3, n of member is the number of single battery in battery pack 1.The primary side of each balanced unit 3 is connected, and output end is separately connected corresponding
Single battery realizes equalization function.When using Balance route, while the monomer number for carrying out equalization operation is less than n.
In one embodiment, the input terminal of inversion unit 2 can connect independent external power supply 4, see Figure 13.
The balancer of the utility model also constantly supplements during carrying out equalization operation to single battery for battery
Energy, when n single batteries all in battery pack 1 reach equilibrium, the electric energy of battery pack 1 is also just filled with.
Claims (10)
1. a kind of active equalization of battery device containing AC module, including battery pack (1), inversion unit (2), balanced unit (3),
Battery pack (1) includes anode B+, battery cathode B-, which is characterized in that the battery pack (1) further include detection line (101),
Equilibrium line (102)；The inversion unit (2) includes input terminal one (206), output end (207), input terminal one (206) and battery
The anode B+ of group (1) is connected with battery cathode B-；The balanced unit (3) includes input terminal two (306), anode output
Hold (307), cathode output end (308), the output end (207) of inversion unit (2) and the input terminal two of all balanced units (3)
(306) it is connected in series, forming circuit；The cathode output end (307) and cathode output end (308) of the balanced unit (3) are respectively
It is connected with the positive and negative anodes of wanted balanced battery cell；The structure of the inversion unit (2) is bridge inverter main circuit, semibridge system
Inversion single channel recommends inverse formula power transformation road or single-phase inversion circuit；The balanced unit (3) is containing half-wave rectifying circuit, entirely
The rectification circuit of wave rectification circuit or full bridge rectifier.
2. a kind of active equalization of battery device containing AC module as described in claim 1, which is characterized in that the bridge-type is inverse
Becoming unit (2) further includes the first power switch (201), the second power switch (202), third power switch (203), the 4th power
Switch (204), current sensor (205), outputting inductance (210)；First power switch (201), the second power switch
(202), third power switch (203), the 4th power switch (204) form single-phase bridge inverter circuit, current sensor (205)
The output electric current on outputting inductance (210) is detected, Current Feedback Control is carried out.
3. a kind of active equalization of battery device containing AC module as described in claim 1, which is characterized in that the semibridge system
Inversion unit (2) further includes the first power switch (201), the second power switch (202), current sensor (205), first capacitor
(208), the second capacitor (209), outputting inductance (210)；First power switch (201), the second power switch (202) and
One capacitor (208), the second capacitor (209) form single-phase semi-bridge formula inverter circuit, and current sensor (205) detects outputting inductance
(210) the output electric current on carries out Current Feedback Control.
4. a kind of active equalization of battery device containing AC module as described in claim 1, which is characterized in that the all-wave is whole
Streaming balanced unit (3) further includes transformer (301), the first rectifier diode (302), the second rectifier diode (303), filtering
Inductance (304), bypass controllable switch (305)；The transformer (301) primary side parallel connection bypass controllable switch (305) afterwards with it is defeated
Enter end two (306) to be connected, when bypass controllable switch (305) is connected, the primary side of transformer (301) be bypassed, transformer (301)
Subcarrier band centre cap, the primary side of the transformer (301) is identical with the number of turns on each secondary side, with the first rectifier diode
(302), the second rectifier diode (303) forms full-wave rectifying circuit, and the cathode output end of the rectification circuit passes through filtered electrical
Sense (304) is connected with cathode output end (307) afterwards, and the cathode of the rectification circuit is connected with cathode output end (308).
5. a kind of active equalization of battery device containing AC module as described in claim 1, which is characterized in that the full-bridge is whole
Streaming balanced unit (3) further includes transformer (301), the first rectifier diode (302), the second rectifier diode (303), filtering
Inductance (304), bypass controllable switch (305), third rectifier diode (309), the 4th rectifier diode (310)；The transformation
Primary side parallel connection bypass controllable switch (305) of device (301) is connected with input terminal two (306) afterwards, and bypass controllable switch (305) connects
When logical, the primary side of transformer (301) is bypassed, the secondary side and the first rectifier diode (302) of transformer (301), the second rectification
Diode (303), third rectifier diode (309), the 4th rectifier diode (310) form full bridge rectifier, the rectification
The cathode output end of circuit is connected after filter inductance (304) with cathode output end (307), the cathode of the rectification circuit
It is connected with cathode output end (308).
6. a kind of active equalization of battery device containing AC module as claimed in claim 5, which is characterized in that the bypass can
Control switch (305) is in parallel with the primary side of transformer (301), is mounted between the primary side and rectification circuit of transformer (301), works as road
When controllable switch (305) is connected, the primary side of transformer (301) is shorted.
7. a kind of active equalization of battery device containing AC module as described in claim 1, which is characterized in that described balanced single
Forming circuit is connect with the output end of inversion unit (2) after the primary side series connection of all transformers (301) in first (3)；It is described equal
Bypass controllable switch (305) in weighing apparatus unit (3), by the control to bypass controllable switch (305), when bypass controllable switch
(305) stop equalization operation to the battery cell connected when connecting, when bypassing controllable switch (305) and disconnecting to being connected
Battery cell carry out equalizaing charge.
8. a kind of active equalization of battery device containing AC module as described in claim 1, which is characterized in that the inversion list
First (2) carry out current feedback by current sensor (205), to control euqalizing current size.
9. a kind of active equalization of battery device containing AC module as described in claim 1, which is characterized in that by equilibrium
The control of unit (3) can carry out Balance route to 1 to n-1 battery cell simultaneously, and wherein n is battery cell number, n
For the integer more than or equal to 1.
10. a kind of active equalization of battery device containing AC module as described in claim 1, which is characterized in that the inversion
The input terminal one (206) of unit (2) can also be connected with independent external power supply (4).
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109088462A (en) * | 2018-10-10 | 2018-12-25 | 北京动力京工科技有限公司 | A kind of active equalization of battery device containing AC module |
| CN110808622A (en) * | 2019-11-11 | 2020-02-18 | 上海科技大学 | Battery equalization circuit and method based on LCC resonant converter |
| CN112670607A (en) * | 2020-12-22 | 2021-04-16 | 江苏金帆电源科技有限公司 | Control system for multi-battery series formation |
| CN117154139A (en) * | 2023-10-27 | 2023-12-01 | 福建星云电子股份有限公司 | Flow battery activation device and method |
-
2018
- 2018-10-10 CN CN201821639486.3U patent/CN209217739U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109088462A (en) * | 2018-10-10 | 2018-12-25 | 北京动力京工科技有限公司 | A kind of active equalization of battery device containing AC module |
| CN110808622A (en) * | 2019-11-11 | 2020-02-18 | 上海科技大学 | Battery equalization circuit and method based on LCC resonant converter |
| CN110808622B (en) * | 2019-11-11 | 2023-09-26 | 上海科技大学 | Battery equalization circuit and method based on LCC resonant converter |
| CN112670607A (en) * | 2020-12-22 | 2021-04-16 | 江苏金帆电源科技有限公司 | Control system for multi-battery series formation |
| CN112670607B (en) * | 2020-12-22 | 2023-09-05 | 江苏金帆电源科技有限公司 | Control system for multi-battery serial formation |
| CN117154139A (en) * | 2023-10-27 | 2023-12-01 | 福建星云电子股份有限公司 | Flow battery activation device and method |
| CN117154139B (en) * | 2023-10-27 | 2024-02-06 | 福建星云电子股份有限公司 | Flow battery activation device and method |
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