CN209088559U - A kind of multichannel variety classes battery pack parallel control device of tandem tap - Google Patents
A kind of multichannel variety classes battery pack parallel control device of tandem tap Download PDFInfo
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- CN209088559U CN209088559U CN201821639418.7U CN201821639418U CN209088559U CN 209088559 U CN209088559 U CN 209088559U CN 201821639418 U CN201821639418 U CN 201821639418U CN 209088559 U CN209088559 U CN 209088559U
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Abstract
The utility model proposes a kind of multichannel variety classes battery pack parallel control devices of tandem tap, including load, battery pack, DC power supply, primary power source, further include discharge switch series unit or charge switch series unit；The discharge switch series unit includes power end, load end, battery-end；The charge switch series unit includes power end, load end, battery-end；Compared with prior art, the charge control of the utility model battery pack and control of discharge independently carry out, and can directly be powered with multichannel, and structure is simple, at low cost, flexible in application.Parallel Operation Control can be carried out to the battery pack of variety classes, different platform voltage, different manufacturers batch, different service life states.Further, it is also possible to which the primary power source being isolated using multiple groups is charged and is powered to the load to battery pack.
Description
Technical field
The utility model relates to a kind of battery protection and control fields, belong to the management system of the associated batteries such as lithium battery,
Especially to the application system of a variety of different battery pack parallel charge-discharge controls.
Background technique
With the development of lithium battery and energy storage technology, the requirement to battery management system is also higher and higher.It is different types of
Battery and different manufacturers, batch, state battery often used in application scenes, therefore more battery pack parallel connection charge and discharges
The safety and be particularly important in terms of the service life that electric control system is applied in battery pack parallel connection.
Since different types of battery stages voltage is different, so if two groups of different types of batteries directly and one
Meeting is played so that the high battery of platform voltage is not fully filled, and the low battery of platform voltage can not put.Same kind of battery is due to factory
Family, batch, the difference of state, there is also differences for characteristic curve, therefore can also cause same problem.
In terms of carrying out charge and discharge control to battery at present, two differential concatenations are especially mainly used in terms of Parallel Control
MOSFET forms bidirectional electronic switch or the control mode in parallel with electronic switch using mechanical switch, and structure is simple, cost
It is lower, but function is more single, is not suitable for the application in complexity power supply system.Such as Chinese patent CN101830269A,
CN203261014U, CN104242253A, CN104617613A, CN107425561A, CN105119361A individually disclose several
The various forms of two-way switch battery pack control circuits of kind and its control method.These schemes only can control two-way switch to charging
Or electric discharge carries out start-stop control.Due to two power electronic devices composition two-way switch, substantially with a mechanical switch
Such as contactor function is identical, therefore cannot achieve the independent control in multiple groups battery parallel connection, especially for multiple new energy
In the system of power supply, which is even more important, and the charging current of battery can be limited and be protected, to service life of battery and
Safety all has great importance.
Chinese patent CN107154665A discloses a kind of battery control device using DC/DC converter, which adopts
With three groups of bidirectional electronic switch, the DC/DC converter of two high-speed power electronic switches and inductance composition is in addition additionally used,
Structure is extremely complex, at high cost, and control system is also extremely complex.The cost ratio of shared battery pack is too high, improper more
The application of group battery.
Chinese patent CN205945144U discloses a kind of battery control device using DC/DC converter, the device knot
Structure is fairly simple, but can only control the charging process of battery pack, discharge process is unable to control, especially when battery mistake
When electric discharge, which can not protect battery, easily cause the safety problem of lithium battery.
In conclusion simple two-way switch control model is fairly simple in the prior art, it is at low cost, but function list
One, the start-stop of charge and discharge can only be controlled, can not be applied in complicated energy-storage system.System with DC/DC converter
Structure is excessively complicated, and control difficulty is big and at high cost, and shared cost ratio is larger especially in low-power system, therefore not
It is suitble to the application in parallel of more battery packs.Furthermore multiple primary power source power applications scenes are not accounted in existing technology.
Utility model content:
The purpose of this utility model is to provide for a kind of multichannel variety classes battery pack Parallel Control dress of tandem tap
It sets, compared with prior art, the charge control and control of discharge of the utility model battery pack independently carry out, and can be straight with multichannel
Power supply is connect, structure is simple, at low cost, flexible in application.It can be to variety classes, different platform voltage, different manufacturers batch, no
Battery pack with service life state carries out parallel Operation Control.Further, it is also possible to which the primary power source being isolated using multiple groups is to battery pack
It charges and powers to the load.
The technical solution adopted in the utility model are as follows:
In order to achieve the above object, the multichannel variety classes battery pack Parallel Control of a kind of tandem tap of the utility model
Device, including load, battery pack, DC power supply, primary power source further include discharge switch series unit or charge switch series connection
Unit；The discharge switch series unit includes power end one, load end one, battery-end one；The charge switch series unit
Including power end two, load end two, battery-end two；
The primary power source is connected with the input terminal of DC power supply, load, battery pack, DC power supply one end be connected in one
It rises, other end is connected with the load end one of discharge switch series unit, battery-end one, power end one respectively；
The primary power source is connected with the input terminal of DC power supply, load, battery pack, DC power supply one end be connected in one
It rises, other end is connected with the load end two of charge switch series unit, battery-end two, power end two respectively.
The discharge switch series unit further includes charging diode, charge power switch one, discharge power switch one, short
Connect device one, direct-furnish electric diode one, controller one；
The discharge power switch one and charge power switch one are connected in series between load and battery pack, are connected among it
Contact is connected with charging diode anode, and cathode and the short connector one and power end one of charging diode link together, and is shorted
The other end of device one is connected with the cathode of direct-furnish electric diode one, the anode and discharge power switch one of direct-furnish electric diode one
Other end and load end one link together, the other end of charge power switch one connects battery-end one, controller one
The monomer battery voltage of battery pack and the total voltage of battery charging and discharging electric current and battery pack are detected, and charge power is switched
One, discharge power switch one is controlled.
The charge switch series unit further includes discharge diode, charge power switch two, discharge power switch two, short
Connect device two, direct-furnish electric diode two, controller two；
The charge power switch two and discharge power switch two are connected in series between battery pack and DC power supply, wherein
Between tie point be connected with discharge diode cathode, the anode of discharge diode and two anode of direct-furnish electric diode and load end two connect
It is connected together, the cathode of direct-furnish electric diode two is connected with one end of short connector two, the other end and charge power of short connector two
Switch two is connected with power end two, and the other end of discharge power switch two is connect with battery-end two, and controller two detects battery
The monomer battery voltage of group and the total voltage of battery charging and discharging electric current and battery pack, and to charge power switch two, electric discharge function
Rate switch two is controlled.
Direct-furnish electric diode one is accessed circuit by short connector one in the discharge switch series unit, or by it from electricity
It is disconnected in road, short connector one can be manually controlled or be carried out automatically controlling by controller one；
Short connector two in the charge switch series unit can be shorted with piece is shorted, and direct-furnish electric diode two is accessed
Circuit, or be disconnected from the circuit；Short connector two can be manually controlled or be carried out automatically controlling by controller two.
The conducting of charge power switch one is only controlled by controller one, realizes a kind of multichannel variety classes electricity of tandem tap
The charge independence function of pond group parallel control device is powered from primary power source to DC power supply and by one He of charge power switch
Charging diode charges to battery pack；
The conducting of discharge power switch one is only controlled by controller one, realizes a kind of multichannel variety classes electricity of tandem tap
The independent discharging function of pond group parallel control device, is passed through in discharge power switch one and charge power switch integrated by battery pack
Anti-paralleled diode to load discharge；
Short connector is shorted, realizes that a kind of the independent of the multichannel variety classes battery pack parallel control device of tandem tap supplies
Electricity Functional powers from primary power source to DC power supply and passes through direct-furnish electric diode and short connector powers to the load；
Short connector one is shorted, and the conducting of charge power switch one is controlled by controller, realizes a kind of tandem tap
Charging and external power supply function, are supplied from primary power source to DC power supply while multichannel variety classes battery pack parallel control device
Electricity is simultaneously charged by charge power switch one and charging diode to battery pack, while passing through direct-furnish electric diode one and short connector
One powers to the load；
Short connector one is shorted, the conducting of discharge power switch one is controlled by controller one, realizes a kind of tandem tap
The preferential function of supplying power of multichannel variety classes battery pack parallel control device is powered from primary power source to DC power supply and is passed through straight
For electric diode one and short connector one to the preferential power supply of load, insufficient power pack passes through discharge power switch one by battery pack
It supplements with the anti-paralleled diode in charge power switch integrated to load discharge, meets load power demand.
The conducting of charge power switch two is only controlled by controller two, realizes a kind of multichannel variety classes electricity of tandem tap
The charge independence function of pond group parallel control device is powered from primary power source to DC power supply and by two He of charge power switch
The internal anti-paralleled diode of discharge power switch two charges to battery pack；
The conducting of discharge power switch two is only controlled by controller two, realizes a kind of multichannel variety classes electricity of tandem tap
The independent discharging function of pond group parallel control device is put by discharge power switch two and discharge diode to load from battery pack
Electricity；
Short connector two is shorted, realizes a kind of independence of the multichannel variety classes battery pack parallel control device of tandem tap
Function of supplying power powers from primary power source to DC power supply and passes through direct-furnish electric diode two and short connector two powers to the load；
Short connector two is shorted, and charge power switch two is controlled by controller two and is connected, realizes a kind of tandem tap
Multichannel variety classes battery pack parallel control device while charging and external power supply function, from primary power source to DC power supply
It powers and is charged by the internal anti-paralleled diode of charge power switch two and discharge power switch two to battery pack, led to simultaneously
It crosses direct-furnish electric diode two and short connector two powers to the load；
Short connector two is shorted, the conducting of discharge power switch two is controlled by controller two, realizes a kind of tandem tap
The preferential function of supplying power of multichannel variety classes battery pack parallel control device is powered from primary power source to DC power supply and is passed through straight
For electric diode two and short connector two to the preferential power supply of load, insufficient power pack passes through discharge power switch two by battery pack
It supplements with discharge diode to load discharge, meets load power demand.
N group battery is in parallel in application, the battery-end one of the n discharge switch series unit connects with n battery pack respectively
It connects；The primary power source is connected with the input terminal of DC power supply, and load, DC power supply and n battery pack other end are connected in one
It rises, load other end is connected with the load end one of n discharge switch series unit, and DC power supply is connected with n discharge switch
The power end one of unit is connected, and separates the charge circuit of n battery pack and discharge loop；By the discharge switch series unit
It is replaced by charge switch series unit, said function may be implemented.
N group battery is in parallel in application, the short connector one of the n discharge switch series unit disconnects, and passes through controller one
The discharge power switch one for controlling i (i < n) a discharge switch series unit is connected, while controlling other j (j≤n-i) a electric discharge
The charge power switch one for switching series unit is connected；The primary power source is powered to DC power supply and to pass through j (j≤n-i) a
Charge power switch one in discharge switch series unit charges to battery pack respectively, while i (i < n) a battery pack passes through institute
Discharge power switch one in the discharge switch series unit of connection is to load discharge；By the discharge switch series unit by filling
Electric switch series unit replaces, and said function may be implemented.
N group battery is in parallel in application, the short connector one of the n discharge switch series unit is shorted, and passes through controller one
The discharge power switch one for controlling i (i < n) a discharge switch series unit is connected；The primary power source is powered simultaneously to DC power supply
It is powered by the direct-furnish electric diode one and short connector one of discharge switch series unit to load is preferential, while insufficient power supply
It point is opened by i battery pack by discharge power switch one in connected discharge switch series unit and charge power
It closes an intracorporal anti-paralleled diode to supplement to load discharge, meets load power demand；By the discharge switch series unit
It is replaced by charge switch series unit, said function may be implemented.
When n group primary power source is powered, the battery-end one of the n discharge switch series unit connects with n battery pack respectively
It connects；The n primary power source is connected with the input terminal of n DC power supply respectively, and n DC power supply and n discharge switch string
The power end one of receipts or other documents in duplicate member is respectively connected with；Load connects together with n DC power supply and battery pack other end, load other one
End is connected with the load end one of n discharge switch series unit；Make the charge circuit of n battery pack independently, and discharges back
Road parallel connection powers to the load；The discharge switch series unit is replaced by charge switch series unit, same function may be implemented
Energy.
The beneficial effects of the utility model are: only increasing two two on the basis of two serial semiconductor power switch
Pole pipe and a short connector, structure is very simple, at low cost, and control flexibly, adapts to a variety of without application scenarios；Battery pack is filled
Electric control and control of discharge can be carried out independently, using diode unilateral conduction characteristic, avoid generating the circulation between battery pack；
When battery pack is used as standby electricity operation, power supply can directly power to the load, and the floating charges such as lithium battery is avoided to cause side reaction, reduce
Battery；It can control and preferentially powered to the load using power supply, power supply electric energy insufficient section is provided by battery pack, is suitble to
The fields of new energy applications such as wind energy, solar energy；It can be to variety classes, different platform voltage, different manufacturers batch, different service life
The battery pack of state carries out parallel Operation Control；The primary power source that multiple groups isolation can be used charges to battery pack and to load
Power supply.
Detailed description of the invention
Fig. 1 conventional batteries group controller schematic diagram；
Fig. 2 is discharge side switch series control device schematic diagram in the utility model；
Fig. 3 is charged side switch series control device schematic diagram in the utility model；
Fig. 4 is charge independence control schematic diagram in the utility model；
Fig. 5 is independent control of discharge schematic diagram in the utility model；
Fig. 6 is separate outer electrical schematic in the utility model；
Fig. 7 is in the utility model while to charge and external power supply schematic diagram；
Fig. 8 is the preferential electrical schematic of power supply in the utility model；
Fig. 9 is multiple groups battery parallel connection schematic diagram in the utility model；
Figure 10 is multiple groups battery independent charge and discharge electrical schematic in parallel in the utility model；
Figure 11 is multiple groups battery preferential electrical schematic in parallel in the utility model；
Figure 12 is multiple groups primary power source power applications embodiment in the utility model.
In attached drawing, component representated by each label:
1, it loads, 2, battery pack, 3, DC power supply, 4, primary power source, 5, discharge switch series unit, 6, charge switch string
Receipts or other documents in duplicate member, 501, charging diode, 502, charge power switch one, 503, discharge power switch one, 504, short connector one, 505,
Direct-furnish electric diode one, 506, power end one, 507, load end one, 508, battery-end one, 509, controller one, 601, electric discharge two
Pole pipe, 602, charge power switch two, 603, discharge power switch two, 604, short connector two, 605, direct-furnish electric diode two,
606, power end two, 607, load end two, 608, battery-end two, 609, controller two.
Specific embodiment
The utility model is described further with reference to the accompanying drawing.
Traditional battery protecting plate, combiner and road device has the characteristics that common, charging control circuit and an electric discharge
Control circuit is shown in Fig. 1 by a bidirectional power semiconductor switch control.Although the circuit structure is simple, using inadequate
It flexibly, can not be using complicated power supply system.Such as in the backup power supply system of communication base station, there is mains-supplied, there is wind-power electricity generation, has
Solar power generation, there are also diesel-driven generator power generations, while also reserve battery being needed to be in standby, once power supply stops, just
It needs by storage battery power supply.Traditional standby electric battery is made of lead-acid battery, with the application of lithium battery, especially echelon lithium
The application of battery increases the type of standby electric battery, and operating status is complicated, and especially lithium battery is not suitable for the standby electricity work of floating charge,
Therefore the control of multiple groups variety classes battery is just needed more flexible, especially in power supply, primary power source is more, type is complicated
In the case where, need more flexible, structure is simple, multiple groups battery parallel control device easy to control.
Primary power source 4 is connected with the input terminal of DC power supply 3 in the present embodiment, load 1, battery pack 2, DC power supply 3
One end connects together, other end respectively with the load end 1 of discharge switch series unit 5, battery-end 1, power end
One 506 are connected, or are connected with the load end 2 607 of charge switch series unit 6, battery-end 2 608, power end 2 606,
See Fig. 2 and Fig. 3.
The discharge switch series unit 5 further includes that charging diode 501, charge power switch 1, discharge power are opened
Close one 503, short connector 1, direct-furnish electric diode 1, controller 1.Although charging in 2 discharge loop of battery pack
Power switch 1 and discharge power switch 1 are connected, but the two power switch not only form a two-way electricity
Sub switch, but have respective standalone feature, other devices such as charging diode 501, short connector 1, direct-furnish can be cooperated
Electric diode 1 uses.
The discharge power switch 1 and charge power switch 1 are connected in series between load 1 and battery pack 2
A discharge loop is formed, in-between tie point is connected with 501 anode of charging diode.The cathode of charging diode 501 with it is short
It connects device 1 and power end 1 links together.The other end of short connector 1 and direct-furnish electric diode 1
Cathode is connected.The anode of direct-furnish electric diode 1 and the other end of discharge power switch 1 and load end 1 connect
It is connected together.The other end of charge power switch 1 connects battery-end 1.Controller 1 detects battery pack 2
The total voltage of monomer battery voltage and battery charging and discharging electric current and battery pack 2, and to charge power switch 1, electric discharge function
Rate switch 1 is controlled.
Short connector 1 in the discharge switch series unit 5 can be shorted with piece is shorted, by direct-furnish electric diode one
505 access circuits, or direct-furnish electric diode 1 is disconnected from the circuit.If replacing short connector one using contactor
504, it can be carried out automatically controlling and whether be accessed direct-furnish electric diode 1 in circuit by controller 1.Short connector
One 504 use can make the more flexible configuration in power supply system of discharge switch series unit 5, especially send out in new energy
It, can be to different power generator independent controls, and to the same load supplying in electric energy-storage system.
Usual charge power switch 1 and discharge power switch 1 are using IGBT and MOSFET, and two poles of charging
Pipe 501 and direct-furnish electric diode 1 generally use Schottky diode, to reduce conduction voltage drop.Short connector 1 is general
It can be made of connecting terminal and terminal plate.
Embodiment as one preferred, Fig. 3 have connected two power switch in the charge circuit of battery pack 2: charging
2 603 discharge power switch 2 603 of 2 502 charge power switch 2 602 of power switch and discharge power switch forms charging and opens
Close series unit 6.Although 2 502 charge power switch 2 602 of charge power switch and 2 603 discharge power of discharge power switch
Switch 2 603 is connected, but the two power switch not only form a bidirectional electronic switch, but has respective independence
Function can cooperate other devices such as discharge diode 601, short connector 2 604, direct-furnish electric diode 2 605 to use.
The charge switch series unit 6 includes discharge diode 601,2 502 charge power of charge power switch switch
2 602,2 603 discharge power switch 2 603 of discharge power switch, short connector 2 604, direct-furnish electric diode 2 605, power end
2 606, load end 2 607, battery-end 2 608,2 609 controller 2 609 of controller.
The 2 502 charge power switch 2 602 of charge power switch is switched with 2 603 discharge power of discharge power switch
2 603 are connected in series between battery pack 2 and DC power supply 3 and form charge circuit, in-between tie point and discharge diode 601
Cathode is connected.The anode of discharge diode 601 links together with 2 605 anode of direct-furnish electric diode and load end 2 607.Directly
It is connected for the cathode of electric diode 2 605 with one end of short connector 2 604.The other end of short connector 2 604 is opened with charge power
2 502 charge power switches 2 602 are closed to be connected with power end 2 606.2 603 discharge power switch two of discharge power switch
603 other end is connect with battery-end 2 608.The monomer battery voltage of 2 609 controller 2 609 of controller detection battery pack 2
With the total voltage of battery charging and discharging electric current and battery pack 2, and to 2 502 charge power switch 2 602 of charge power switch,
2 603 discharge power switch 2 603 of discharge power switch is controlled.
Embodiment as one preferred, as shown in figure 4, wherein Fig. 4 (a) is using 5 pairs of electricity of discharge switch series unit
Pond group 2 carries out charge independence control schematic diagram, and Fig. 4 (b) is independently fill to battery pack 2 using charge switch series unit 6
Electric control schematic diagram.Although the topological structure of two circuits is different, component type and quantity required for two circuits
It is identical, and can be realized identical function.
When discharge switch series unit 5 carries out charge independence control to battery pack 2, only controlled by controller 1
Charge power switch 1 is connected, and realizes a kind of independence of the multichannel variety classes battery pack parallel control device of tandem tap
Charge function is powered from primary power source 4 to DC power supply 3 and by charge power switch 1 and charging diode 501 to electricity
Pond group 2 charges, and sees Fig. 4 (a).
In the present embodiment, charge power switch 1 is connected, and electric current is flowed out from the anode of DC power supply 3, by battery pack
It is formed into a loop after 2 using the cathode that charge power switch 1, charging diode 501 return to DC power supply 3, and to battery
Group 2 charges.
Preferably, when charge switch series unit 6 carries out charge independence control to battery pack 2, pass through controller 2 609
Controller 2 609 only controls the conducting of 2 502 charge power switch 2 602 of charge power switch, realizes a kind of the more of tandem tap
The charge independence function of road variety classes battery pack parallel control device is powered from primary power source 4 to DC power supply 3 and by filling
2 603 discharge power switch 2 603 of 2 502 charge power switch 2 602 of power switch and discharge power switch it is internal anti-
Parallel diode charges to battery pack 2, Fig. 4 (b) is seen, no matter 2 603 discharge power switch 2 603 of discharge power switch is at this time
No conducting can charge to battery pack 2, therefore usually at control 2 603 discharge power switch 2 603 of discharge power switch
In off state.
In the present embodiment, 2 502 charge power switch 2 602 of charge power switch conducting, electric current from DC power supply 3 just
Pole outflow, using two pole of internal inverse parallel of 2 603 discharge power switch 2 603 of discharge power switch after battery pack 2
Pipe, 2 502 charge power switch 2 602 of charge power switch return to the cathode forming circuit of DC power supply 3, and to battery pack 2
It charges.
Embodiment as one preferred, as shown in figure 5, wherein Fig. 5 (a) is using 5 pairs of electricity of discharge switch series unit
Pond group 2 carries out independent control of discharge schematic diagram, and Fig. 5 (b) is independently put to battery pack 2 using charge switch series unit 6
Electric control schematic diagram.Although topological structure is different, component type and quantity required for two circuits are identical, and
And it can be realized identical function.
When discharge switch series unit 5 carries out independent control of discharge to battery pack 2, only controlled by controller 1
Discharge power switch 1 is connected, and realizes a kind of independence of the multichannel variety classes battery pack parallel control device of tandem tap
Discharging function passes through the internal anti-paralleled diode of discharge power switch 1 and charge power switch 1 by battery pack 2
It discharges to load 1, sees Fig. 5 (a).No matter whether charge power switch 1 is connected at this time, can power to load 1, therefore
Usually control charge power switch 1 is in an off state.
In the present embodiment, the conducting conducting of discharge power switch 1, electric current is flowed out from the anode of battery pack 2, through overload
The negative of battery pack 2 is returned to using the internal anti-paralleled diode of discharge power switch 1, charge power switch 1 after 1
Pole forming circuit, and be powered to load 1.
Preferably, when charge switch series unit 6 carries out independent control of discharge to battery pack 2, pass through controller 2 609
Controller 2 609 only controls the conducting of 2 603 discharge power switch 2 603 of discharge power switch, realizes a kind of the more of tandem tap
The independent discharging function of road variety classes battery pack parallel control device is discharged by battery pack 2 by discharge power switch 2 603
Power switch 2 603 and discharge diode 601 discharge to load 1, see Fig. 5 (b),
In the present embodiment, the conducting of 2 603 discharge power switch 2 603 of discharge power switch, anode of the electric current from battery pack 2
Outflow, returns to battery pack 2 using diode 601,2 603 discharge power switch 2 603 of discharge power switch after overload 1
Cathode forming circuit, and load 1 is powered.
Embodiment as one preferred, as shown in fig. 6, wherein Fig. 6 (a) is using discharge switch series unit 5 to negative
It carries 1 and carries out the independently-powered control schematic diagram in outside, Fig. 6 (b) is external only to be carried out using 6 pairs of charge switch series unit loads 1
Vertical power supply control schematic diagram.Although topological structure is different, the complete phase of component type and quantity required for two circuits
Together, and it can be realized identical function.
When 5 pairs of discharge switch series unit loads 1 carry out separate outer power supply control, short connector 1 is shorted, it is real
The independently-powered function of the multichannel variety classes battery pack parallel control device of existing a kind of tandem tap, from primary power source 4 to straight
Galvanic electricity source 3 powers and is powered by direct-furnish electric diode 1 and short connector 1 to load 1, sees Fig. 6 (a).
As shown in Fig. 6 (a), in the present embodiment, short connector 1 is shorted, anode outflow of the electric current from DC power supply 3, warp
It is formed into a loop after overload 1 using the cathode that direct-furnish electric diode 1, short connector 1 return to DC power supply 3, and right
Load 1 is powered.
Preferably, when 6 pairs of discharge switch series unit loads 1 carry out separate outer power supply control, by short connector 2 604
It is shorted, realizes a kind of independently-powered function of the multichannel variety classes battery pack parallel control device of tandem tap, by primary electricity
Source 4 powers to DC power supply 3 and is powered by direct-furnish electric diode 2 605 and short connector 2 604 to load 1, sees Fig. 6 (b).
As shown in Fig. 6 (b), in the present embodiment, short connector 2 604 is shorted, anode outflow of the electric current from DC power supply 3, warp
It is formed into a loop after overload 1 using the cathode that direct-furnish electric diode 2 605, short connector 2 604 return to DC power supply 3, and right
Load 1 is powered.
The present embodiment mainly for the novel batteries group such as lithium battery, due to lithium battery cannot long-term floating charge, prevent it secondary anti-
The service life of battery pack 2 should be influenced, therefore, just needs to control its disconnection when battery pack 2 is fully charged, prevents floating charge.At this moment 1 is loaded
It is powered completely by primary power source 4 and DC power supply 3.Usual DC power supply 3 uses constant pressure power supply mode, keeps the power supply of load 1 steady
It is fixed.
Embodiment as one preferred, as shown in fig. 7, wherein Fig. 7 (a) is using 5 pairs of electricity of discharge switch series unit
The charging of pond group 2 carries out external power supply control schematic diagram to load 1 simultaneously, and Fig. 7 (b) is using 6 pairs of electricity of discharge switch series unit
The charging of pond group 2 carries out external power supply control schematic diagram to load 1 simultaneously.Although topological structure is different, needed for two circuits
The component type and quantity wanted are identical, and can be realized identical function.
It, will be short when 5 pairs of discharge switch series unit loads 1 carry out external power supply and carry out charge control to battery pack 2
The short circuit of device 1 is connect, and the conducting of charge power switch 1 is controlled by controller 1, realizes a kind of the more of tandem tap
Charging and external power supply function, are supplied from primary power source 4 to DC power supply 3 while the variety classes battery pack parallel control device of road
Electricity is simultaneously charged by charge power switch 1 and charging diode 501 to battery pack 2, while passing through direct-furnish electric diode one
505 and short connector 1 to load 1 power, see Fig. 7 (a).
As shown in Fig. 7 (a), in the present embodiment, short connector 1 is shorted and charge power switch 1 is connected, electric all the way
The anode outflow from DC power supply 3 is flowed, is returned to directly after overload 1 using direct-furnish electric diode 1, short connector 1
The cathode in galvanic electricity source 3 is formed into a loop, and is powered to load 1.In addition anode outflow of the electric current from DC power supply 3 all the way, warp
It is formed into a loop after crossing battery pack 2 using the cathode that charge power switch 1, charging diode 501 return to DC power supply 3,
And it charges to battery pack 2.
Preferably, when 6 pairs of discharge switch series unit loads 1 carry out external power supply and carry out charge control to battery pack 2
When, short connector 2 604 is shorted, and the charging function of charge power switch 2 502 is controlled by 2 609 controller 2 609 of controller
Rate switch 2 602 is connected, while realizing a kind of multichannel variety classes battery pack parallel control device of tandem tap charging with
External power supply function powers from primary power source 4 to DC power supply 3 and passes through 2 502 charge power switch two of charge power switch
602 and 2 603 discharge power switch of discharge power switch, 2 603 body in anti-paralleled diode to battery pack 2 charge, simultaneously lead to
It crosses direct-furnish electric diode 2 605 and short connector 2 604 to power to load 1, sees Fig. 7 (b).
As shown in Fig. 7 (b), in the present embodiment, short connector 2 604 is shorted and 2 502 charge power of charge power switch is opened
Close 2 602 conducting, all the way electric current from DC power supply 3 anode outflow, after overload 1 using direct-furnish electric diode 2 605,
Short connector 2 604 returns to the cathode forming circuit of DC power supply 3, and is powered to load 1.In addition all the way electric current from direct current
The anode outflow in source 3, using inverse parallel in 2 603 discharge power switch of discharge power switch, 2 603 body after battery pack 2
Diode, 2 502 charge power switch 2 602 of charge power switch return to the cathode forming circuit of DC power supply 3, and to battery
Group 2 charges.
In the present embodiment, when the insufficient and external primary power source 4 of 2 electric energy of battery pack powers abundance using the controlling party
Method.While power supply using primary power source 4 and DC power supply 3 to load 1, if there is extra electric energy can charge to battery pack 2.
Embodiment as one preferred, as shown in figure 8, wherein Fig. 8 (a) is to be controlled using discharge switch series unit 5
While 4 pairs of primary power source loads 1 are preferentially powered, electricity shortage part is powered from battery pack 2 to load 1, and Fig. 8 (b) is
While being preferentially powered using 4 pairs of primary power source loads 1 of the control of discharge switch series unit 6, electricity shortage part is by electricity
Pond group 2 is powered to load 1.Although topological structure is different, the complete phase of component type and quantity required for two circuits
Together, and it can be realized identical function.
When external power supply is not enough to provide electric energy for load 1, short connector 1 is shorted, is controlled by controller 1
Discharge power switch 1 processed is connected, and realizes a kind of the excellent of the multichannel variety classes battery pack parallel control device of tandem tap
First function of supplying power, power from primary power source 4 to DC power supply 3 and by direct-furnish electric diode 1 and short connector 1 to
Preferentially power supply, insufficient power pack pass through discharge power switch 1 and charge power switch one by battery pack 2 for load 1
502 internal anti-paralleled diode is supplemented to discharge to load 1, meets load power demand, sees Fig. 8 (a).
Preferably, when external power supply is not enough to provide electric energy for load 1, short connector 2 604 is shorted, control is passed through
2 609 controller 2 609 of device controls discharge power switch 1 and is connected, and realizes a kind of multichannel variety classes electricity of tandem tap
The preferential function of supplying power of pond group parallel control device powers from primary power source 4 to DC power supply 3 and passes through direct-furnish electric diode two
605 and short connector 2 604 to the preferentially power supply of load 1, insufficient power pack passes through discharge power switch 2 603 by battery pack 2
Discharge power switch 2 603 and discharge diode 601 are supplemented to discharge to load 1, meets load power demand, sees Fig. 8 (b).
As shown in figure 8, in the present embodiment, it is assumed that the not instead of alternating current of primary power source 4 or high-power diesel generator, wind
Power generation device or device of solar generating.Since the power that wind-power electricity generation and solar power generation can be provided is very unstable
It is fixed, when the power that primary power source 4 can be provided is less than power needed for load 1, it is necessary to which battery pack 2 is supplied to load 1 simultaneously
Electricity.In order to preferentially utilize new energy, it is necessary to it controls DC power supply 3 and is transferred to maximum power point tracking (MPPT) operating mode, it is excellent
First it is powered to load 1, and the only electric energy supplement insufficient section of battery pack 2.
Embodiment as one preferred needs multiple groups battery pack 2 to carry out used in parallel for large-scale energy-storage system, with
Just reach required stored energy capacitance.Therefore multiple battery packs 2 need to carry out Parallel Control.
When n group battery is in parallel in application, the battery-end 1 of the n discharge switch series unit 5 is electric with n respectively
Pond group 2 connects.The primary power source 4 is connected with the input terminal of DC power supply 3, and load 1, DC power supply 3 and n battery pack 2 are another
Outer one end connects together, and 1 other end of load is connected with the load end 1 of n discharge switch series unit 5, DC power supply 3
It is connected with the power end 1 of n discharge switch series unit 5, separates the charge circuit of n battery pack 2 and discharge loop,
See Fig. 9.
Preferably, it if the charge switch series unit 6 of discharge switch series unit 5 in Fig. 9 replaced, can be realized
Identical function.
Embodiment as one preferred needs primary power source 4 and DC power supply 3 to charge percentage of batteries group 2, while another
Outer portion battery pack 2 powers to the load.This control mode separates rechargeable battery set 2 and discharge battery group 2, and external power supply is not
It directly powers to the load, the main purpose of the present embodiment can be accurately controlled the electricity of battery pack 2.It is well known that battery
The state-of-charge SOC of group 2 is difficult on-line measurement.Therefore it can effectively improve estimating for the SOC of battery pack 2 by the control strategy
Meter.Keep control system more accurate efficiently, sees Figure 10.
In the present embodiment, as shown in Figure 10.N group battery it is in parallel in application, the n discharge switch series unit 5 it is short
The disconnection of device 1 is connect, is led by the discharge power switch 1 that controller 6 controls i (i < n) a discharge switch series unit 5
It is logical, while the charge power switch 1 for controlling a discharge switch series unit 5 of j (j≤n-i) is connected.The primary power source 4
It powers to DC power supply 3 and is charged respectively to j battery pack 2 by j (j≤n-i) a discharge switch series unit 5.I simultaneously
(i < n) a battery pack 2 is discharged by the discharge power switch 1 in connected discharge switch series unit 5 to load 1.
Preferably, it if the charge switch series unit 6 of discharge switch series unit 5 in Fig. 9 replaced, can be realized
Identical function.
Embodiment as one preferred, when primary power source 4 is using new energy system, due to the shakiness of power supply
It is fixed, it is necessary to which that battery pack 2 supplies 4 electric energy notch of primary power source.Therefore need to control the work of DC power supply 3 in MPPT state.This
When, the short connector 1 of the n discharge switch series unit 5 is shorted, by the control of controller 6, i (i < n) is a puts
The discharge power switch 1 of electric switch series unit 5 is connected.The primary power source 4 powers to DC power supply 3 and by putting
The direct-furnish electric diode 1 and short connector 1 of electric switch series unit 5 work to the preferentially power supply of load 1 in MPPT
Mode.The insufficient part of electric energy provided by primary power source 4 passes through connected discharge switch by i battery pack 2 simultaneously
Discharge power switch 1 and discharge diode 1 in series unit 5 are supplemented to discharge to load 1, meets load electricity consumption need
It asks, power supply and electricity consumption moment is made to be in equilibrium state, ensure the normal operation of load 1, see Figure 11.
Preferably, it if the charge switch series unit 6 of discharge switch series unit 5 in Fig. 9 replaced, can be realized
Identical function.
Embodiment as one preferred, in practical applications, especially there is primary power source 4 in communication base station power supply system
Alternating current, multiple wind power generation plants, multiple device of solar generating, diesel generating system.The each not phase of these device operation characteristics
Together, it is difficult to be fused together, in order to make more flexible ground combined application, can use multiple primary power sources 4 and control respectively
Different battery packs 2 is made, is also beneficial to the limitation to 2 charging current of battery pack in this way.If all battery packs 2 are connected in parallel
If charging, the charging current of certain battery packs 2 can be made excessive, not only will affect battery life, it is also possible to influence lithium battery
Safety.Therefore n group primary power source 4 power supply when, the battery-end 1 of the n discharge switch series unit 5 respectively with
N battery pack 2 connects.The n primary power source 4 is connected with the input terminal of n DC power supply 3 respectively, and n DC power supply 3
It is respectively connected with the power end 1 of n discharge switch series unit 5.Load 1 and n DC power supply 3 and battery pack 2 are in addition
One end connects together, and 1 other end of load is connected with the load end 1 of n discharge switch series unit 5.Make n battery
Group 2 charge circuit independently, and discharge loop parallel connection to load 1 power.The present embodiment is detailed in Figure 12.If primary electricity
The quantity in source 4 is less than the quantity of battery pack 2, can also make a primary power source 4 while charge to multiple battery packs 2.
Preferably, it if the charge switch series unit 6 of discharge switch series unit 5 in Fig. 9 replaced, can be realized
Identical function.
The foregoing description of the disclosed embodiments, being only used for professional and technical personnel in the field can be realized or use this reality
With novel.Various modifications to these embodiments will be readily apparent to those skilled in the art, herein
Defined General Principle can be real in other embodiments without departing from the spirit or scope of the present utility model
It is existing, therefore the present invention will not be limited to the embodiments shown herein, and be to fit to it is disclosed herein
Principle and the consistent widest scope of innovative point.
Claims (10)
1. a kind of multichannel variety classes battery pack parallel control device of tandem tap, including load (1), battery pack (2), direct current
Power supply (3), primary power source (4), which is characterized in that further include discharge switch series unit (5) or charge switch series unit
(6)；The discharge switch series unit (5) includes power end one (506), load end one (507), battery-end one (508)；It is described
Charge switch series unit (6) includes power end two (606), load end two (607), battery-end two (608)；
The primary power source (4) is connected with the input terminal of DC power supply (3), load (1), battery pack (2), DC power supply (3)
One end connects together, other end respectively with the load end one (507) of discharge switch series unit (5), battery-end one (508),
Power end one (506) is connected；
The primary power source (4) is connected with the input terminal of DC power supply (3), load (1), battery pack (2), DC power supply (3)
One end connects together, other end respectively with the load end two (607) of charge switch series unit (6), battery-end two (608),
Power end two (606) is connected.
2. a kind of multichannel variety classes battery pack parallel control device of tandem tap as described in claim 1, feature exist
In the discharge switch series unit (5) further includes charging diode (501), charge power switch one (502), discharge power
Switch one (503), short connector one (504), direct-furnish electric diode one (505), controller one (509)；
The discharge power switch one (503) and charge power switch one (502) are connected in series in load (1) and battery pack (2)
Between, in-between tie point is connected with charging diode (501) anode, the cathode and short connector one of charging diode (501)
(504) it links together with power end one (506), other end and the direct-furnish electric diode one (505) of short connector one (504)
Cathode is connected, the anode of direct-furnish electric diode one (505) and the other end of discharge power switch one (503) and load end one
(507) it links together, the other end of charge power switch one (502) connects battery-end one (508), controller one (509)
The monomer battery voltage of battery pack (2) and the total voltage of battery charging and discharging electric current and battery pack (2) are detected, and to charging function
Rate switch one (502), discharge power switch one (503) are controlled.
3. a kind of multichannel variety classes battery pack parallel control device of tandem tap as described in claim 1, feature exist
In the charge switch series unit (6) further includes discharge diode (601), charge power switch two (602), discharge power
Switch two (603), short connector two (604), direct-furnish electric diode two (605), controller two (609)；
The charge power switch two (602) and discharge power switch two (603) are connected in series in battery pack (2) and DC power supply
(3) between, in-between tie point is connected with discharge diode (601) cathode, the anode and direct power supply two of discharge diode (601)
Pole pipe two (605) anode and load end two (607) link together, the cathode and short connector two of direct-furnish electric diode two (605)
(604) one end is connected, and the other end of short connector two (604) is connected with charge power switch two (602) and power end two (606)
It connects, the other end of discharge power switch two (603) is connect with battery-end two (608), and controller two (609) detects battery pack (2)
Monomer battery voltage and battery charging and discharging electric current and battery pack (2) total voltage, and to charge power switch two (602),
Discharge power switch two (603) is controlled.
4. such as claim 2 and a kind of multichannel variety classes battery pack Parallel Control of tandem tap as claimed in claim 3 dress
It sets, which is characterized in that the short connector one (504) in the discharge switch series unit (5) connects direct-furnish electric diode one (505)
Enter circuit, or be disconnected from the circuit, short connector one (504) can manually control or by controller one (509)
It carries out automatically controlling；
Short connector two (604) in the charge switch series unit (6) can be shorted with piece is shorted, by direct-furnish electric diode two
(605) circuit is accessed, or is disconnected from the circuit；Short connector two (604) can manually control or pass through controller
Two (609) carry out automatically controlling.
5. a kind of multichannel variety classes battery pack parallel control device of tandem tap as claimed in claim 2, feature exist
In only controlling charge power switch one (502) conducting by controller one (509), realize that a kind of multichannel of tandem tap is different
The charge independence function of type battery pack parallel control device powers from primary power source (4) to DC power supply (3) and passes through charging
Power switch one (502) and charging diode (501) charge to battery pack (2)；
Discharge power switch one (503) conducting is only controlled by controller one (509), realizes that a kind of multichannel of tandem tap is different
The independent discharging function of type battery pack parallel control device passes through discharge power switch one (503) and charging by battery pack (2)
The intracorporal anti-paralleled diode of power switch one (502) discharges to load (1)；
Short connector one (504) is shorted, realizes a kind of the only of the multichannel variety classes battery pack parallel control device of tandem tap
Vertical function of supplying power, powers from primary power source (4) to DC power supply (3) and passes through direct-furnish electric diode one (505) and short connector one
(504) it powers to load (1)；
Short connector one (504) is shorted, and by controller one (509) control charge power switch one (502) conducting, realizes one
Charging and external power supply function while the multichannel variety classes battery pack parallel control device of kind tandem tap, by primary power source
(4) it powers to DC power supply (3) and is filled by charge power switch one (502) and charging diode (501) to battery pack (2)
Electricity, while being powered by direct-furnish electric diode one (505) and short connector one (504) to load (1)；
Short connector one (504) is shorted, by controller one (509) control discharge power switch one (503) conducting, realizes one kind
The preferential function of supplying power of the multichannel variety classes battery pack parallel control device of tandem tap, from primary power source (4) to direct current
Source (3) powers and is preferentially powered by direct-furnish electric diode one (505) and short connector one (504) to load (1), insufficient power supply
Part passes through discharge power switch one (503) and the intracorporal anti-paralleled diode of charge power switch one (502) by battery pack (2)
It supplements and discharges to load (1), meet load power demand.
6. a kind of multichannel variety classes battery pack parallel control device of tandem tap as claimed in claim 3, feature exist
In only controlling charge power switch two (602) conducting by controller two (609), realize that a kind of multichannel of tandem tap is different
The charge independence function of type battery pack parallel control device powers from primary power source (4) to DC power supply (3) and passes through charging
The internal anti-paralleled diode of power switch two (602) and discharge power switch two (603) charges to battery pack (2)；
Discharge power switch two (603) conducting is only controlled by controller two (609), realizes that a kind of multichannel of tandem tap is different
The independent discharging function of type battery pack parallel control device passes through discharge power switch two (603) and electric discharge by battery pack (2)
Diode (601) discharges to load (1)；
Short connector two (604) is shorted, realizes a kind of the only of the multichannel variety classes battery pack parallel control device of tandem tap
Vertical function of supplying power, powers from primary power source (4) to DC power supply (3) and passes through direct-furnish electric diode two (605) and short connector two
(604) it powers to load (1)；
Short connector two (604) is shorted, and by controller two (609) control charge power switch two (602) conducting, realizes one
Charging and external power supply function while the multichannel variety classes battery pack parallel control device of kind tandem tap, by primary power source
(4) power to DC power supply (3) and by charge power switch two (602) and discharge power switch two (603) it is internal instead simultaneously
Union II pole pipe charges to battery pack (2), while being supplied by direct-furnish electric diode two (605) and short connector two (604) to load (1)
Electricity；
Short connector two (604) is shorted, by controller two (609) control discharge power switch two (603) conducting, realizes one kind
The preferential function of supplying power of the multichannel variety classes battery pack parallel control device of tandem tap, from primary power source (4) to direct current
Source (3) powers and is preferentially powered by direct-furnish electric diode two (605) and short connector two (604) to load (1), insufficient power supply
Part is supplemented by discharge power switch two (603) and discharge diode (601) to load (1) from battery pack (2) discharges, and meets
Load power demand.
7. a kind of multichannel variety classes battery pack parallel control device of tandem tap as described in claim 1, feature exist
It is in parallel in, n group battery in application, the n discharge switch series unit (5) battery-end one (508) respectively with n battery pack
(2) it connects；The primary power source (4) is connected with the input terminal of DC power supply (3), load (1), DC power supply (3) and n battery
Group (2) other end connects together, and loads the load end one (507) of (1) other end and n discharge switch series unit (5)
It is connected, DC power supply (3) is connected with the power end one (506) of n discharge switch series unit (5), makes n battery pack (2)
Charge circuit and discharge loop separate；The discharge switch series unit (5) is replaced by charge switch series unit (6), it can
To realize said function.
8. a kind of multichannel variety classes battery pack parallel control device of tandem tap as described in claim 1, feature exist
In n group battery is in parallel in application, the short connector one (504) of the n discharge switch series unit (5) disconnects, and passes through controller
One (509) control discharge power switch one (503) conducting of i (i < n) a discharge switch series unit (5), while controlling other j
The charge power switch one (502) of (j≤n-i) a discharge switch series unit (5) is connected；Primary power source (4) Xiang Zhiliu
Power supply (3) power and by the charge power switch one (502) in j (j≤n-i) a discharge switch series unit (5) respectively to
Battery pack (2) charging, while i (i < n) a battery pack (2) passes through the electric discharge function in connected discharge switch series unit (5)
Rate switch one (503) discharges to load (1)；By the discharge switch series unit (5) by charge switch series unit (6) generation
It replaces, said function may be implemented.
9. a kind of multichannel variety classes battery pack parallel control device of tandem tap as described in claim 1, feature exist
In n group battery is in parallel in application, the short connector one (504) of the n discharge switch series unit (5) is shorted, and passes through controller
One (509) control discharge power switch one (503) conducting of i (i < n) a discharge switch series unit (5)；The primary power source
(4) the direct-furnish electric diode one (505) and short connector one of discharge switch series unit (5) are powered and passed through to DC power supply (3)
(504) it preferentially powers to load (1), while insufficient power pack is opened by i battery pack (2) by connected electric discharge
The intracorporal anti-paralleled diode of discharge power switch one (503) and charge power switch one (502) closed in series unit (5) is mended
It fills and discharges to load (1), meet load power demand；By the discharge switch series unit (5) by charge switch series unit
(6) it replaces, said function may be implemented.
10. a kind of multichannel variety classes battery pack parallel control device of tandem tap as described in claim 1, feature exist
In when n group primary power source (4) is powered, the battery-end one (508) of the n discharge switch series unit (5) is electric with n respectively
Pond group (2) connection；The n primary power source (4) is connected with the input terminal of n DC power supply (3) respectively, and n DC power supply
(3) power end one (506) with n discharge switch series unit (5) is respectively connected with；Load (1) and n DC power supply (3) and
Battery pack (2) other end connects together, and loads the load end one of (1) other end and n discharge switch series unit (5)
(507) it is connected；Make the charge circuit of n battery pack (2) independently, and discharge loop parallel connection is powered to load (1)；It will be described
Discharge switch series unit (5) is replaced by charge switch series unit (6), and said function may be implemented.
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| CN108988445A (en) * | 2018-10-10 | 2018-12-11 | 北京动力京工科技有限公司 | A kind of the multichannel variety classes battery pack parallel control device and method of tandem tap |
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