CN109088461A - A kind of electrically independent multichannel variety classes battery pack parallel control device of charge and discharge and method - Google Patents
A kind of electrically independent multichannel variety classes battery pack parallel control device of charge and discharge and method Download PDFInfo
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- CN109088461A CN109088461A CN201811174834.9A CN201811174834A CN109088461A CN 109088461 A CN109088461 A CN 109088461A CN 201811174834 A CN201811174834 A CN 201811174834A CN 109088461 A CN109088461 A CN 109088461A
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 9
- 229910052744 lithium Inorganic materials 0.000 description 9
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- 238000010248 power generation Methods 0.000 description 6
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- 238000004146 energy storage Methods 0.000 description 4
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Classifications
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- H02J7/0003—
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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- H02J7/0077—
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- General Chemical & Material Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention devises a kind of electrically independent multichannel variety classes battery pack parallel control device of charge and discharge, including load, battery pack, DC power supply, primary power source, further includes Parallel Control unit, controller；The Parallel Control unit includes power end, load end, battery-end；Controller detects the monomer battery voltage of battery pack and the total voltage of battery charging and discharging electric current and battery pack, and controls Parallel Control unit.Compared with prior art, the charge control of battery pack of the present invention 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 present invention relates to a kind of battery protection and control fields, belong to the management system of the associated batteries such as lithium battery, especially
It is the application system to 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
Electric control system is particularly important in the secure context that battery pack parallel connection is applied.
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.
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.
Summary of the invention
The purpose of the invention is to provide a kind of electrically independent multichannel variety classes battery pack parallel control device of charge and discharge,
Compared with prior art, the charge control of battery pack of the present invention and control of discharge independently carry out, and can directly be powered with multichannel,
Its structure is simple, at low cost, flexible in application.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.Further, it is also possible to using multiple groups be isolated primary power source to battery pack charge with
And it powers to the load.
The technical scheme adopted by the invention is as follows:
In order to achieve the above object, the electrically independent multichannel variety classes battery pack Parallel Control dress of a kind of charge and discharge of the invention
It sets, including load, battery pack, DC power supply, primary power source, which is characterized in that further include Parallel Control unit, controller；Institute
Stating Parallel Control unit includes power end, load end, battery-end；The primary power source is connected with the input terminal of DC power supply, bears
Load, battery pack, DC power supply one end connect together, other end respectively with the load end of Parallel Control unit, battery-end, electricity
Source is connected, and controller detects the monomer battery voltage of battery pack and the total voltage of battery charging and discharging electric current and battery pack, and
Parallel Control unit is controlled.
The Parallel Control unit further includes charging diode, charge power switch, discharge power switch, two poles of electric discharge
Pipe, direct-furnish electric diode, short connector；
The charging diode and charge power switch connects, in charging diode and charge power switch it is internal instead simultaneously
Join diode polarity on the contrary, consistent with the conducting direction of charge power switch；
The discharge diode and discharge power switch connects, in discharge diode and discharge power switch it is internal instead simultaneously
Join diode polarity on the contrary, consistent with the conducting direction of discharge power switch；
The direct-furnish electric diode is connected with short connector.
When using cathode control, the cathode of the charging diode and the cathode of discharge diode connect with power end jointly
Connect, the anode of short connector and discharge diode is connect with load end jointly, charge power switch and discharge power switch jointly with
Battery-end connection；
When using anode control, the anode of the charging diode and the anode of discharge diode connect with power end jointly
Connect, the cathode of short connector and discharge diode is connect with load end jointly, charge power switch and discharge power switch jointly with
Battery-end connection.
Short connector in the Parallel Control unit can be shorted with piece is shorted, and direct-furnish electric diode is accessed circuit, or
Direct-furnish electric diode is disconnected from the circuit by person；Short connector can be manually controlled or be carried out automatically controlling by controller.
Charge power switch conduction is only controlled by controller, realizes a kind of electrically independent multichannel variety classes battery of charge and discharge
The charge independence function of group parallel control device powers from primary power source to DC power supply and is switched and charged by charge power
Diode charges to battery pack；
Discharge power switch conduction is only controlled by controller, realizes a kind of electrically independent multichannel variety classes battery of charge and discharge
The independent discharging function of group parallel control device is switched with discharge diode by discharge power to load discharge from battery pack；
Short connector is shorted, realizes a kind of independence of electrically independent multichannel variety classes battery pack parallel control device of charge and discharge
Function of supplying power 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 is shorted, and charge power switch conduction is controlled by controller, realizes that a kind of charge and discharge is electrically independent more
Charging and external power supply function, are powered from primary power source to DC power supply while the variety classes battery pack parallel control device of road
And it is charged by charge power switch and charging diode to battery pack, while passing through direct-furnish electric diode and short connector to load
Power supply；
Short connector is shorted, discharge power switch conduction is controlled by controller, realizes a kind of electrically independent multichannel of charge and discharge
The preferential function of supplying power of variety classes battery pack parallel control device, powers from primary power source to DC power supply and passes through direct power supply
To the preferential power supply of load, insufficient power pack is switched by discharge power by battery pack and is discharged two poles for diode and short connector
Pipe is supplemented to load discharge, meets load power demand.
The battery parallel connection of n group is in application, the battery-end of the n Parallel Control unit is connect with n battery pack respectively；It is described
Primary power source is connected with the input terminal of DC power supply, and load, DC power supply and n battery pack other end connect together, and loads
Other end is connected with the load end of n Parallel Control unit, and DC power supply is connected with the power end of n Parallel Control unit,
The charge circuit and discharge loop for making n battery pack separate.
N group battery is in parallel in application, the short connector of the n Parallel Control unit disconnects, by controller control i (i <
N) the discharge power switch conduction of a Parallel Control unit, while controlling the charge power of a Parallel Control unit of j (j≤n-i)
Switch conduction；The primary power source powers to DC power supply and passes through a Parallel Control unit of j (j≤n-i) respectively to battery pack
Charging, while i (i < n) a battery pack is switched by the discharge power in connected Parallel Control unit to load discharge.
N group battery is in parallel in application, the short connector of the n Parallel Control unit is shorted, by controller control i (i <
N) the discharge power switch conduction of a Parallel Control unit；The primary power source powers to DC power supply and passes through Parallel Control list
The direct-furnish electric diode and short connector of member are to the preferential power supply of load, while insufficient power pack is passed through therewith by i battery pack
Discharge power switch and discharge diode in the Parallel Control unit being connected are supplemented to load discharge, meet load electricity consumption need
It asks.
When n group primary power source is powered, the battery-end of the n Parallel Control unit is connect with n battery pack respectively；It is described
N primary power source is connected with the input terminal of n DC power supply respectively, and the power supply of n DC power supply and n Parallel Control unit
End is respectively connected with；Load connects together with n DC power supply and battery pack other end, load other end and n and joint control
The load end of unit processed is connected；Make the charge circuit of n battery pack independently, and discharge loop parallel connection powers to the load.
Since above-mentioned technical proposal is used, the present invention has following advantages and effect compared with prior art:
An effect of the invention is, non-only with two unidirectional semiconductor power switch and a short connector, structure
Often simple, at low cost, control is flexible.
An effect of the invention is that the charge control and control of discharge of battery pack can be carried out independently, avoids generating
Circulation between battery pack.
An effect of the invention is that, when battery pack is used as standby electricity operation, power supply can directly power to the load, and keep away
Exempt from battery float and cause side reaction, reduces battery shelf life.
An effect of the invention is, can control and is preferentially powered to the load using power supply, power supply electric energy insufficient section
It is provided by battery pack, is suitble to the fields of new energy applications such as wind energy, solar energy.
An effect of the invention is, can control anode, can also control battery cathode, is particularly suitable for
The application scenarios such as communication base station.
An effect of the invention is, can be to variety classes, different platform voltage, different manufacturers batch, different longevity
The battery pack of life state carries out parallel Operation Control.
An effect of the invention is, 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 the battery pack parallel control device schematic diagram that cathode controls in the present invention；
Fig. 3 is the battery pack parallel control device schematic diagram of anode control in the present invention；
Fig. 4 is charge independence control schematic diagram in the present invention；
Fig. 5 is independent control of discharge schematic diagram in the present invention；
Fig. 6 is separate outer electrical schematic in the present invention；
Fig. 7 is in the present invention while to charge and external power supply schematic diagram；
Fig. 8 is the preferential electrical schematic of power supply in the present invention；
Fig. 9 is multiple groups battery parallel connection schematic diagram in the present invention；
Figure 10 is multiple groups battery independent charge and discharge electrical schematic in parallel in the present invention；
Figure 11 is multiple groups battery preferential electrical schematic in parallel in the present invention；
Figure 12 is multiple groups primary power source power applications embodiment in the present invention.
In attached drawing, component representated by each label:
1, it loads, 2, battery pack, 3, DC power supply, 4, primary power source, 5, Parallel Control unit, 6, controller, 501, fill
Electric diode, 502, charge power switch, 503, discharge power switch, 504, discharge diode, 505, direct-furnish electric diode,
506, power end, 507, load end, 508, battery-end, 509, short connector.
Specific embodiment
The present invention 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, and other end is connected with the load end 507 of Parallel Control unit 5, battery-end 508, power end 506 respectively,
Controller 6 detects the monomer battery voltage of battery pack 2 and the total voltage of battery charging and discharging electric current and battery pack 2, by calculating
After logic judgment, Parallel Control unit 5 is controlled by signal port.
The Parallel Control unit 5 further include charging diode 501, charge power switch 502, discharge power switch 503,
Discharge diode 504, direct-furnish electric diode 505, short connector 509.
Charging diode 501 is connected with charge power switch 502.In charging diode 501 and charge power switch 502
Internal anti-paralleled diode polarity is on the contrary, consistent with the conducting direction of charge power switch 502.
Electric diode 504 is connected with discharge power switch 503, the body in discharge diode 504 and discharge power switch 503
Interior anti-paralleled diode polarity is on the contrary, consistent with the conducting direction of discharge power switch 503.
Direct-furnish electric diode 505 is connected with short connector 509.
The series connection sequencing of all series components does not influence the function of circuit.Wherein power electronic switching and two poles
Pipe series connection is to carry out on-off and traffic organising to electric current to form single-phase switch.
Short connector 509 in the Parallel Control unit 5 can be shorted with piece is shorted, and direct-furnish electric diode 505 is accessed
Circuit, or direct-furnish electric diode 505 is disconnected from the circuit.If replacing short connector 509 using contactor, control can be passed through
Device 6 processed carries out automatically controlling whether access direct-furnish electric diode 505 in circuit.The use of short connector 509 can make control in parallel
Unit 5 processed more flexible configuration in power supply system can be to different power generations especially in generation of electricity by new energy energy-storage system
Device independent control, and to the same load supplying.
Usual charge power switch 502 and the use IGBT and MOSFET of discharge power switch 503, and charging diode 501
Schottky diode is generally used with discharge diode 504, to reduce conduction voltage drop.
Embodiment as one preferred, Fig. 2 are the battery pack parallel control device signal of 2 cathode of single battery group control
Figure.The cathode of the charging diode 501 and the cathode of discharge diode 504 are connect with power end 506 jointly, short connector 509
It is connect jointly with load end 507 with the anode of discharge diode 504, charge power switch 502 and discharge power switch 503 are common
It is connect with battery-end 508.The embodiment is mainly used for communication base station power supply system, and the power supply system of communication base station is total anode
Bus, plus earth, it is therefore desirable to which battery cathode is controlled.
Embodiment as one preferred, Fig. 3 are the battery pack parallel control device signal of 2 anode control of single battery group
Figure, is mainly used for negative ground system.The anode of the anode of the charging diode 501 and discharge diode 504 jointly with electricity
Source 506 connects, and the cathode of short connector 509 and discharge diode 504 is connect with load end 507 jointly, charge power switch 502
It is connect jointly with battery-end 508 with discharge power switch 503.
Embodiment as one preferred passes through control when Parallel Control unit 5 carries out charge independence control to battery pack 2
Device 6 processed only controls the conducting of charge power switch 502, and short connector 509 disconnects, and realizes a kind of electrically independent multichannel variety classes of charge and discharge
The charge independence function of battery pack parallel control device is powered from primary power source 4 to DC power supply 3 and is switched by charge power
502 and charging diode 501 to battery pack 2 charge, see Fig. 4.
As shown in figure 4, charge power switch 502 is connected in the present embodiment, and anode outflow of the electric current from DC power supply 3, warp
It is formed into a loop after crossing battery pack 2 using the cathode that charge power switch 502, charging diode 501 return to DC power supply 3, and
It charges to battery pack 2.For the system of anode control, control method is similar.
Embodiment as one preferred when Parallel Control unit 5 carries out independent control of discharge to battery pack 2, passes through control
Device 6 processed only controls the conducting of discharge power switch 503, and short connector 509 disconnects, and realizes a kind of electrically independent multichannel variety classes of charge and discharge
The independent discharging function of battery pack parallel control device passes through discharge power switch 503 and discharge diode 504 by battery pack 2
It discharges to load 1, sees Fig. 5.
As shown in figure 5, discharge power switch 503 is connected in the present embodiment, electric current passes through from the anode outflow of battery pack 2
It is formed into a loop after load 1 using the cathode that discharge diode 504, discharge power switch 503 return to battery pack 2, and to load 1
Battery pack 2 is controlled while power supply to discharge.For the system of anode control, control method is similar.
Embodiment as one preferred will be short when 5 pairs of Parallel Control unit loads 1 carry out separate outer power supply control
The short circuit of device 509 is connect, realizes a kind of independently-powered function of electrically independent multichannel variety classes battery pack parallel control device of charge and discharge,
It powers from primary power source 4 to DC power supply 3 and is powered by direct-furnish electric diode 505 and short connector 509 to load 1, see Fig. 6.
As shown in fig. 6, short connector 509 is shorted in the present embodiment, electric current is flowed out from the anode of DC power supply 3, through overload
It is formed into a loop after 1 using the cathode that short connector 509, direct-furnish electric diode 505 return to DC power supply 3, and load 1 is supplied
Electricity.For the system of anode control, control method is similar.The present embodiment is mainly for the novel batteries group such as lithium battery, due to lithium
Battery cannot long-term floating charge, prevent its side reaction influence battery pack 2 service life therefore just need to control when battery pack 2 is fully charged
Its disconnection is made, floating charge is prevented.At this moment it loads and is powered completely by primary power source 4 and DC power supply 3.Usual DC power supply 3 is using permanent
Power supply mode is pressed, the powered stable of load 1 is made.
Embodiment as one preferred, 5 pairs of Parallel Control unit loads 1 carry out external power supply and carry out to battery pack 2
When charge control, short connector 509 is shorted, and charge power switch 502 is controlled by controller 6 and is connected, realizes a kind of charge and discharge
While electrically independent multichannel variety classes battery pack parallel control device charging with external power supply function, from primary power source 4 to
The power supply of DC power supply 3 is simultaneously charged by charge power switch 502 and charging diode 501 to battery pack 2, while passing through direct power supply
Diode 505 and short connector 509 are powered to load 1, see Fig. 7.
As shown in fig. 7, in the present embodiment, short connector 509 is shorted and the conducting of charge power switch 502, and electric current is from straight all the way
The anode outflow in galvanic electricity source 3, returns to the negative of DC power supply 3 using short connector 509, direct-furnish electric diode 505 after overload 1
Pole forming circuit, and load 1 is powered.In addition electric current is flowed out from the anode of DC power supply 3 all the way, after battery pack 2
Using charge power switch 502, charging diode 501 return to DC power supply 3 cathode forming circuit, and to battery pack 2 into
Row charging.For the system of anode control, control method is similar.The control method is used when 2 electric energy deficiency of battery pack.It utilizes
While primary power source 4 and DC power supply 3 are powered to load 1, if there is extra electric energy can charge to battery pack.
Embodiment as one preferred, it is when external power supply is not enough to provide electric energy for load 1, short connector 509 is short
It connects, discharge power switch 503 is controlled by controller 6 and is connected, realizes a kind of electrically independent multichannel variety classes battery pack of charge and discharge
The preferential function of supplying power of parallel control device powers from primary power source 4 to DC power supply 3 and passes through 505 He of direct-furnish electric diode
Short connector 509 passes through two poles of discharge power switch 503 and electric discharge by battery pack 2 to the preferentially power supply of load 1, insufficient power pack
Pipe 504 is supplemented to discharge to load 1, meets load power demand, sees Fig. 8.
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 passes through Parallel Control list
Member 5 is powered to load 1 simultaneously.In order to preferentially utilize new energy, it is necessary to control DC power supply 3 and be transferred to maximum power point tracking
(MPPT) operating mode is preferentially 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 independent Parallel Control unit 5 to control respectively to it
System.When the battery parallel connection of n group is in application, the battery-end 508 of the n Parallel Control unit 5 is connect with n battery pack 2 respectively.Institute
It states primary power source 4 to be connected with the input terminal of DC power supply 3, load 1, DC power supply 3 and n 2 other end of battery pack are connected in one
It rises, 1 other end of load is connected with the load end 507 of n Parallel Control unit 5, DC power supply 3 and n Parallel Control unit 5
Power end 506 be connected, keep the charge circuit of n battery pack 2 and discharge loop separated, see Fig. 9.
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.The main purpose of this control mode can be accurately controlled the electricity of battery pack 2.
It is well known that the state-of-charge SOC of battery pack 2 is difficult on-line measurement.Therefore battery can effectively improve by the control strategy
The estimation of the SOC of group 2.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 Parallel Control unit 5 short connector
509 disconnect, and are connected by the discharge power switch 503 that controller 6 controls i (i < n) a Parallel Control unit 5, while controlling j (j
≤ n-i) the charge power switch 502 of a Parallel Control unit 5 is connected.The primary power source 4 is powered and is passed through to DC power supply 3
A Parallel Control unit 5 of j (j≤n-i) charges to j battery pack 2 respectively.I (i < n) a battery pack 2 passes through and is connected simultaneously
Discharge power switch 503 in Parallel Control unit 5 discharges to load 1.
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 509 of the n Parallel Control unit 5 is shorted, i (i < n) a Parallel Control is controlled by controller 6
The discharge power switch 503 of unit 5 is connected.The primary power source 4 powers to DC power supply 3 and by Parallel Control unit 5
To the preferentially power supply of load 1, cutting is made in MPPT mode for direct-furnish electric diode 505 and short connector 509.Primary power source 4 is mentioned simultaneously
The insufficient part of the electric energy of confession is switched by i battery pack 2 by the discharge power in connected Parallel Control unit 5
503 and discharge diode 504 supplement to load 1 discharge, meet load power demand, make power supply and the electricity consumption moment be in equilibrium-like
State ensures the normal operation of load 1, sees Figure 11.
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 when n group primary power source 4 is powered, the battery-end 508 of the n Parallel Control unit 5 is electric with n respectively
Pond group 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 and n
The power end 506 of Parallel Control unit 5 is respectively connected with.Load 1 is connected in one with n DC power supply 3 and 2 other end of battery pack
It rises, 1 other end of load is connected with the load end 507 of n Parallel Control unit 5.Distinguish the charge circuit of n battery pack 2
It is independent, and discharge loop parallel connection is powered to load 1.The present embodiment is detailed in Figure 12.If the quantity of primary power source 4 is less than battery pack
2 quantity can also make a primary power source 4 while charge to multiple battery packs 2.
The foregoing description of the disclosed embodiments, being only used for professional and technical personnel in the field can be realized or use this hair
It is bright.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present invention, therefore sheet
Invention is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein and innovative point phase
Consistent widest scope.
Claims (10)
1. a kind of electrically independent multichannel variety classes battery pack parallel control device of charge and discharge, including it is load (1), battery pack (2), straight
Galvanic electricity source (3), primary power source (4), which is characterized in that further include Parallel Control unit (5), controller (6)；The Parallel Control
Unit (5) includes power end (506), load end (507), battery-end (508)；The primary power source (4) and DC power supply (3)
Input terminal be connected, load (1), battery pack (2), DC power supply (3) one end connect together, other end respectively with Parallel Control
Load end (507), battery-end (508), the power end (506) of unit (5) are connected, and controller (6) detects the monomer of battery pack (2)
The total voltage of cell voltage and battery charging and discharging electric current and battery pack (2), and Parallel Control unit (5) is controlled.
2. a kind of electrically independent multichannel variety classes battery pack parallel control device of charge and discharge as described in claim 1, feature
It is, the Parallel Control unit (5) further includes charging diode (501), charge power switch (502), discharge power switch
(503), discharge diode (504), direct-furnish electric diode (505), short connector (509)；
The charging diode (501) is connected with charge power switch (502), and charging diode (501) and charge power switch
(502) the internal anti-paralleled diode polarity in is on the contrary, consistent with the charge power switch conducting direction of (502)；
The discharge diode (504) is connected with discharge power switch (503), and discharge diode (504) and discharge power switch
(503) the internal anti-paralleled diode polarity in is on the contrary, consistent with the discharge power switch conducting direction of (503)；
The direct-furnish electric diode (505) is connected with short connector (509).
3. a kind of electrically independent multichannel variety classes battery pack parallel control device of charge and discharge as claimed in claim 2, feature
Be, when using cathode control, the cathode of the cathode of the charging diode (501) and discharge diode (504) jointly with
The anode of power end (506) connection, short connector (509) and discharge diode (504) is connect with load end (507) jointly, is charged
Power switch (502) and discharge power switch (503) are connect with battery-end (508) jointly；
When using anode control, the anode of the anode of the charging diode (501) and discharge diode (504) jointly with electricity
The cathode of source (506) connection, short connector (509) and discharge diode (504) is connect with load end (507) jointly, and charge function
Rate switch (502) and discharge power switch (503) are connect with battery-end (508) jointly.
4. a kind of electrically independent multichannel variety classes battery pack parallel control device of charge and discharge as claimed in claim 2, feature
It is, the short connector (509) in the Parallel Control unit (5) can be shorted with piece is shorted, and direct-furnish electric diode (505) is connect
Enter circuit, or direct-furnish electric diode (505) is disconnected from the circuit；Short connector (509) can manually control or pass through
Controller (6) carries out automatically controlling.
5. a kind of electrically independent multichannel variety classes battery pack parallel control device of charge and discharge as described in claim 1, feature
It is, charge power switch (502) conducting is only controlled by controller (6), realizes that a kind of electrically independent multichannel of charge and discharge is not of the same race
The charge independence function of class battery pack parallel control device is powered from primary power source (4) to DC power supply (3) and by charging function
Rate switchs (502) and charging diode (501) and charges to battery pack (2)；
Discharge power switch (503) conducting is only controlled by controller (6), realizes a kind of electrically independent multichannel variety classes of charge and discharge
The independent discharging function of battery pack parallel control device passes through discharge power switch (503) and discharge diode by battery pack (2)
(504) it discharges to load (1)；
Short connector (509) are shorted, realize a kind of the only of the electrically independent multichannel variety classes battery pack parallel control device of charge and discharge
Vertical function of supplying power, powers from primary power source (4) to DC power supply (3) and passes through direct-furnish electric diode (505) and short connector (509)
It powers to load (1).
6. a kind of electrically independent multichannel variety classes battery pack parallel control device of charge and discharge as claimed in claim 2, feature
It is, short connector (509) is shorted, and control charge power switch (502) conducting by controller (6), realizes a kind of charge and discharge
Charging and external power supply function while electrically independent multichannel variety classes battery pack parallel control device, by primary power source (4)
It powers to DC power supply (3) and is charged by charge power switch (502) and charging diode (501) to battery pack (2), simultaneously
It is powered by direct-furnish electric diode (505) and short connector (509) to load (1)；
Short connector (509) are shorted, discharge power switch (503) conducting is controlled by controller (6), realizes that a kind of charge and discharge are only
The preferential function of supplying power of vertical multichannel variety classes battery pack parallel control device is supplied from primary power source (4) to DC power supply (3)
Electricity is simultaneously preferentially powered by direct-furnish electric diode (505) and short connector (509) to load (1), and insufficient power pack is by battery
Group (2), which is supplemented by discharge power switch (503) and discharge diode (504) to load (1), discharges, and meets load electricity consumption need
It asks.
7. a kind of electrically independent multichannel variety classes battery pack parallel control device of charge and discharge as described in claim 1, feature
Be, n group battery it is in parallel in application, the n Parallel Control unit (5) battery-end (508) respectively with n battery pack (2)
Connection；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 pack
(2) other end connects together, and load (1) other end is connected with the load end (507) of n Parallel Control unit (5), direct current
Power supply (3) is connected with the power end (506) of n Parallel Control unit (5), makes the charge circuit of n battery pack (2) and discharges back
Road separates.
8. a kind of electrically independent multichannel variety classes battery pack parallel control device of charge and discharge as described in claim 1, feature
It is, n group battery is in parallel in application, the short connector (509) of the n Parallel Control unit (5) disconnects, and passes through controller (6)
Discharge power switch (503) conducting of i (i < n) a Parallel Control unit (5) is controlled, while controlling that j (j≤n-i) is a and joint control
Charge power switch (502) conducting of unit (5) processed；The primary power source (4) to DC power supply (3) power and by j (j≤
N-i) a Parallel Control unit (5) respectively to battery pack (2) charge, while i (i < n) a battery pack (2) pass through connected and
The discharge power switch (503) joined in control unit (5) discharges to load (1).
9. a kind of electrically independent multichannel variety classes battery pack parallel control device of charge and discharge as described in claim 1, feature
It is, n group battery is in parallel in application, the short connector (509) of the n Parallel Control unit (5) is shorted, and passes through controller (6)
Control discharge power switch (503) conducting of i (i < n) a Parallel Control unit (5)；The primary power source (4) is to DC power supply
(3) it powers and is preferentially supplied by the direct-furnish electric diode (505) of Parallel Control unit (5) and short connector (509) to load (1)
Electricity, while insufficient power pack passes through the electric discharge function in connected Parallel Control unit (5) by i battery pack (2)
Rate switch (503) and discharge diode (504) are supplemented to discharge to load (1), meets load power demand.
10. a kind of electrically independent multichannel variety classes battery pack parallel control device of charge and discharge as described in claim 1, feature
Be, n group primary power source (4) power when, the battery-end (508) of the n Parallel Control unit (5) respectively with n battery pack
(2) it 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) with
The power end (506) of n Parallel Control unit (5) is respectively connected with；It loads (1) and n DC power supply (3) and battery pack (2) is another
Outer one end connects together, and load (1) other end is connected with the load end (507) of n Parallel Control unit (5)；Make n battery
The charge circuit of group (2) independently, and discharge loop parallel connection to load (1) power.
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| CN201811174834.9A CN109088461A (en) | 2018-10-10 | 2018-10-10 | A kind of electrically independent multichannel variety classes battery pack parallel control device of charge and discharge and method |
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| CN201811174834.9A CN109088461A (en) | 2018-10-10 | 2018-10-10 | A kind of electrically independent multichannel variety classes battery pack parallel control device of charge and discharge and method |
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| CN114825528A (en) * | 2022-04-28 | 2022-07-29 | 湖南湘源微能电力科技有限公司 | Parallel battery charging and discharging control system and control method thereof |
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| US11880324B2 (en) | 2021-06-21 | 2024-01-23 | Caterpillar Inc. | Battery data translator |
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Application publication date: 20181225 |