CN106208315B - The efficiency-timed power supply system of charge and discharge - Google Patents
The efficiency-timed power supply system of charge and discharge Download PDFInfo
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- CN106208315B CN106208315B CN201610587603.5A CN201610587603A CN106208315B CN 106208315 B CN106208315 B CN 106208315B CN 201610587603 A CN201610587603 A CN 201610587603A CN 106208315 B CN106208315 B CN 106208315B
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- 238000004146 energy storage Methods 0.000 claims abstract description 14
- 238000010248 power generation Methods 0.000 claims abstract description 5
- 238000007600 charging Methods 0.000 claims description 47
- 238000000034 method Methods 0.000 claims description 17
- 238000005516 engineering process Methods 0.000 claims description 12
- 239000002253 acid Substances 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims description 4
- 230000003993 interaction Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 2
- 210000000352 storage cell Anatomy 0.000 claims 3
- 238000004886 process control Methods 0.000 claims 1
- 239000013589 supplement Substances 0.000 claims 1
- 230000000295 complement effect Effects 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
Classifications
-
- 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
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
-
- H02J7/0077—
-
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Abstract
The efficiency-timed power supply system of charge and discharge belongs to power supply system technical field more particularly to a kind of efficiency-timed power supply system of charge and discharge.The present invention provides a kind of efficiency-timed power supply system of charge and discharge.The present invention includes photovoltaic power generation part G1... Gn waits the energy storage of capacity can charge-discharge battery B1、B2, interlocking linkage type switch K1、K2, fast diode D1、D2, while the switch K cut-off3、K4With load L, structural feature G1... Gn anode, B1、B2Anode, L anode are connected, G1... Gn cathode and K1、K2One end is connected, K1The other end, B1Cathode, D1Cathode, K3One end is connected；K2The other end, B2Cathode, D2Cathode, K4One end is connected；D1Anode, D2Anode, ground wire are connected；K3The other end, K4The other end, L cathode are connected.
Description
Technical field
The invention belongs to power supply system technical field more particularly to a kind of efficiency-timed power supply systems of charge and discharge.
Background technique
The common lead-acid accumulator of existing market electricity energy storage type, lithium-ions battery, super capacitor, nickel hydrogen storage battery
Etc. technologies；These accumulator cell charging and discharging key problem in technology points are the safe and efficient and long-life, this requires charging process will it is controllable or
Intelligent control.It is required that cannot overcharge, efficiently control technology is required constantly to adjust strength of charging current according to accumulator status, big electricity
Flow fast charge, constant current uniform charging, trickle charge；So that charging highly effective and safe is quick.Control that different size of current are most effective to be done
Method is exactly the management of PWM(pulse width) control technology.
(1) specific 48V battery charge waveforms are as shown in fig. 6, the so-called main waveform of PWM charging technique, waveform can bases
Battery group state of charge impulse waveform width, when frequency changes duty, whole so there is half the time in charging process
Waveform pass zero point, being equivalent to the power supply entirely to charge or photovoltaic has half the time resting.Here it is battery chargings
Low efficiency true cause.Often have in the industry and is in short called 1.5 multiplying powers of charging.It goes to charge with the energy greater than 1.5 times, it could handle
Battery is full of.Energy storage charge efficiency is low (67%).
(2) power supply or solar energy photovoltaic utilization rate to charge is low: charge and discharge energy storage technology gross efficiency 54%, charge efficiency
(66.7%), discharging efficiency (83%).
Every piece of original battery of battery is divided into all the same two pieces of voltage, capacity, as shown in fig. 7, passing through control
Technology allows the battery difference alternating, complementary for being divided into two groups to charge, every string battery charging process PWM identical with single string battery
Control charging, but be doubled by the complementary string of charging technique two battery total charging current and effect in parallel, charging effect
Rate is doubled.And storage battery safety Charge Management is identical with original single group battery；The effect of generation is exactly same
The battery charging time shortens half Deng under the conditions of；It is equivalent to for solar energy power generating function and photovoltaic power generation is imitated
Rate is doubled.
Summary of the invention
The present invention addresses the above problem, provides a kind of efficiency-timed power supply system of charge and discharge.
To achieve the above object, the present invention adopts the following technical scheme that, the present invention includes photovoltaic power generation part G1... Gn,
The energy storage of equal capacity can charge-discharge battery B1、B2, interlocking linkage type switch K1、K2, fast diode D1、D2, while that cut-offs opens
Close K3、K4With load L, structural feature G1... Gn anode, B1、B2Anode, L anode are connected, G1... Gn cathode and K1、K2One
End is connected, K1The other end, B1Cathode, D1Cathode, K3One end is connected.
K2The other end, B2Cathode, D2Cathode, K4One end is connected.
D1Anode, D2Anode, ground wire are connected.
K3The other end, K4The other end, L cathode are connected.
The K1、K2Using two AOT460 pipes in parallel, K1、K2Drain electrode is connected, K1Grid respectively with the first NPN triode
Emitter, the first PNP triode emitter are connected, and the first NPN triode collector connects power supply VCC, the first NPN triode base
Pole, the first PNP triode base stage, tri- pole collector of the 2nd NPN are connected, tri- pole emitter of the 2nd NPN, the first PNP triode collection
Electrode, ground wire are connected, and the second NPN transistor base is connected with third NPN triode collector, third NPN triode emitter
Ground connection, third NPN transistor base, pwm signal input port, the 4th NPN transistor base are connected.
4th NPN triode collector, the 5th NPN transistor base, the second PNP triode base stage are connected, the 4th NPN tri-
Pole pipe emitter, ground wire, the second PNP triode collector are connected, and the 5th NPN triode collector meets power supply VCC, the 5th NPN
Transistor emitter, the second PNP triode emitter, K2 grid are connected.
As a preferred embodiment, energy storage of the present invention can charge-discharge battery be lithium battery or lead-acid battery.
As another preferred embodiment, the invention also includes fast diode D3、D4、D5、D6, D1、D3、D5Parallel connection, D2、D4、
D5It is in parallel.
As another preferred embodiment, K of the present invention1、K2For MOS switch pipe, IGBT or relay.
Secondly, K of the present invention1、K2Control circuit according to the charging energy-storing Type Control K of battery1、K2It carries out chain
Interaction is alternately cut-off, each of which waveform cut-off is square wave, adjustable pulse width system.
In addition, K of the present invention1、K2Waveform duty cycle is controlled and is adjusted according to battery types and state SDC.
Beneficial effect of the present invention.
The present invention is grouped battery, passes through K1K2Interlocking linkage control model is, it can be achieved that the safe and efficient charging of battery group
Technology, while K1K2Alternating cut-offs control, realizes that power supply point (other form of power such as photovoltaic, alternating current) efficiently double charging technique.
D of the present invention1D2For the minimum fast diode of forward resistance.D1D2Connection determines that two group storage battery groups are isolation,
Have simultaneously and vise grounding function, always vises two group storage battery group cathode near zero potential.
The present invention passes through K3K4Control is cut-off simultaneously, while load combine cut-offfing, realizes energy-storage system to load
Power supply realizes that two group storage batteries combine parallel operation technology.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and detailed description.The scope of the present invention not only limits to
In the statement of the following contents.
Fig. 1 is schematic structural view of the invention.
Fig. 2 is that the present invention saves K3, K4 structural schematic diagram.
Fig. 3 is K of the present invention1K2Charge waveforms.
Fig. 4, which is power supply of the present invention, gives the total charging figure (I=I of battery1+I2=2I1).
Fig. 5 is present invention cathode system schematic altogether.
Fig. 6 is 48V battery charge waveforms figure.
Fig. 7 is that the battery for being divided into two groups is allowed to distinguish alternating, complementary charging schematic diagram by control technology.
Fig. 8 is K of the present invention1K2Control drive part schematic diagram.
Specific embodiment
As shown, the present invention includes photovoltaic power generation part G1... Gn waits the energy storage of capacity can charge-discharge battery B1、B2,
Interlocking linkage type switch K1、K2, fast diode D1、D2, while the switch K cut-off3、K4With load L, G1... Gn anode, B1、
B2Anode, L anode are connected, G1... Gn cathode and K1、K2One end is connected, K1The other end, B1Cathode, D1Cathode, K3One end is connected.
K2The other end, B2Cathode, D2Cathode, K4One end is connected.
D1Anode, D2Anode, ground wire are connected.
K3The other end, K4The other end, L cathode are connected.
G1... Gn is also possible to alternating current or power supply.
The energy storage can charge-discharge battery be lithium battery or lead-acid battery.B1、B2Energy storage for the B/2 of equal capacity can charge and discharge
The lithium battery or lead-acid battery of electricity.
It can control K by control circuit1K2Duration, but K is connected in switch off time1K2It is interlock type switch, i.e. K1It is logical, K2It is disconnected.
K1It is disconnected, K2It is logical.
The invention also includes fast diode D3、D4、D5、D6, D1、D3、D5Parallel connection, D2、D4、D5It is in parallel.By D1D2……D4
It is multiple to vise the used in parallel of ground connection fast diode, battery grouping may be implemented and realize electric power storage while efficiently multiplication is charged
Pond packet combining energy storage full capacity power supply technique.
The K1、K2Using two AOT460 pipes in parallel, K1、K2Drain electrode is connected, K1Grid respectively with the first NPN triode
Emitter, the first PNP triode emitter are connected, and the first NPN triode collector connects power supply VCC, the first NPN triode base
Pole, the first PNP triode base stage, tri- pole collector of the 2nd NPN are connected, tri- pole emitter of the 2nd NPN, the first PNP triode collection
Electrode, ground wire are connected, and the second NPN transistor base is connected with third NPN triode collector, third NPN triode emitter
Ground connection, third NPN transistor base, pwm signal input port, the 4th NPN transistor base are connected.
4th NPN triode collector, the 5th NPN transistor base, the second PNP triode base stage are connected, the 4th NPN tri-
Pole pipe emitter, ground wire, the second PNP triode collector are connected, and the 5th NPN triode collector meets power supply VCC, the 5th NPN
Transistor emitter, the second PNP triode emitter, K2 grid are connected.
As shown in figure 8, charging pwm signal, which is divided into two-way, removes two group storage battery charging circuits of control, this two-way charging circuit
Principle be identical.It is wherein negated all the way by NPN triode, this works alternatively two-way charging circuit.Two NPN pipes
Combination with a PNP pipe is used to amplify pwm signal, its voltage amplitude is made to be enough to control the closing of NMOS tube AOT460 and open
It opens, meanwhile, charging current is controlled according to different duty ratios.
The K1、K2For MOS switch pipe, IGBT or relay.
The K1、K2Control circuit according to the charging energy-storing Type Control K of battery1、K2Chain interaction is carried out alternately to open
Disconnected, each of which waveform cut-off is square wave, adjustable pulse width system.The charging energy-storing type of battery such as lead-acid battery, lithium battery.
Charging energy-storing Type Control charge switch frequency according to battery is the routine techniques of those skilled in the art.
The K1、K2Waveform duty cycle is controlled and is adjusted according to battery types and state SDC.Charge switch waveform accounts for
Sky than controlled and adjusted according to battery types and state SDC be those skilled in the art routine techniques.
Charge efficiency multiplication key of the present invention is a former group storage battery according to " varying capacity does not become half to voltage " principle
It is divided into two string battery groups.Two string battery complementations alternately efficiently charging is completed by control technology.
As shown in Figure 1.
1) capacity becomes half: being completed by two groups of back-to-back isolation clamp diodes, isolating diode requires low resistance fast
Fast conducting diode.The capacity of diode is not enough can symmetrically to increase back-to-back diodes in parallel number.To adapt to high current
It needs.It is exactly cathode interconnection technique altogether if two groups of back-to-back clamp diodes are mounted between two group storage batteries anode.Such as
Two groups of back-to-back clamp diodes of fruit are mounted between two group storage battery cathode (such as Fig. 1), are exactly total positive interconnection technique.Two kinds
The position of clamp diode installation is different, but can complete the complementary efficiently multiplication charging control function of battery classification, is all
Within scope of patent protection.
2) battery can carry out simultaneously during charging and discharging, can also individually carry out.Charging process passes through intelligence
Control technology controls K1 and K2 alternate conduction, and solar panel is connected by K1 and is charged to battery B1 group, controls
Control K2 is opened while circuit control K1 closure charging, otherwise K2 is connected and given battery group B2 charging control circuit control simultaneously
K1 is disconnected.Two group storage batteries complete the complementary charging technique of two group storage battery groups by the automatic alternately folding of control circuit, and
The synthetic waveform of two string battery chargings, which is equivalent to, for the sun-generated electric power of entire power supply or charging adds charging current
One times big, the every string Battery charge controller of premise, which allows, retains the safe and efficient long-life, and the mechanism of control does not become.
3) discharge process is to control K3 and K4 by control circuit to be closed to complete.Two groups are ensured that in this way
Battery string by giving load balancing to power simultaneously after parallel connection.Isolation clamp diode plays balanced buffer action, when wherein one
String battery voltage is lower: such as: Ub1 < Ub2, above certain value unbalanced at this time, B2 are charged by K3, K4 of conducting to B1
Reaching two string accumulator battery voltage equilibrium circulation is zero.
4) discharge switch K3, K4 can be saved simultaneously, this is replaced with the enough big conducting wires of two root volumes, so that load is directly logical
Cross two conductor in parallel power supplies.Load-side can increase by one group for controlling the single switch of loaded work piece to complete, such as Fig. 2 institute
Show.
To under load continuous electric power thus supplied, the K in K3, K4 and Fig. 2 can keep closed state always.
The art of this patent is applicable not only to angle of solar battery system, the various power supplies with energy storage such as power station and wind-solar-diesel storage system
System, including micro-grid system, and it is suitable for the charging pile of vehicle electric system.
It is understood that being merely to illustrate the present invention above with respect to specific descriptions of the invention and being not limited to this
Technical solution described in inventive embodiments, those skilled in the art should understand that, still the present invention can be carried out
Modification or equivalent replacement, to reach identical technical effect；As long as meet use needs, all protection scope of the present invention it
It is interior.
Claims (1)
1. the efficiency-timed circuit of charge and discharge, including photovoltaic power generation part G1 ... Gn, wait capacity energy storage can charge and discharge electrical storage cell group B1,
B2, interlocking linkage type switch K1, K2, fast diode D1, D2, while switch K3, the K4 and load L cut-off, which is characterized in that
G1 ... Gn anode, B1, B2 anode, L anode be connected, G1 ... Gn cathode is connected with the one end K1, K2, the K1 other end, B1 cathode,
D1 cathode, the one end K3 are connected；
The K2 other end, B2 cathode, D2 cathode, the one end K4 are connected；
D1 anode, D2 anode, ground wire are connected；
The K3 other end, the K4 other end, L cathode are connected；
The energy storage can charge and discharge electrical storage cell group be lead-acid battery；
It further include fast diode D3, D4, D5, D6, D1, D3, D5 are in parallel, and D2, D4, D6 are in parallel；
Control circuit control K1, K2 of described K1, K2 carry out chain interaction and alternately cut-off, each of which waveform cut-off is side
Wave, adjustable pulse width system；
Can charge and discharge electrical storage cell group B1, B2 voltage, capacity it is all the same, make two group storage battery groups alternately mutual respectively by control technology
Supplement electricity；
K1, K2 switch off time and conducting duration are controlled by control circuit；
Described K1, K2 are connected using two AOT460 pipes in parallel, K1, K2 drain electrode, and K1 grid is sent out with the first NPN triode respectively
Emitter-base bandgap grading, the first PNP triode emitter are connected, and the first NPN triode collector meets power supply VCC, the first NPN transistor base,
First PNP triode base stage, the second NPN triode collector are connected, the second NPN triode emitter, the first PNP triode collection
Electrode, ground wire are connected, and the second NPN transistor base is connected with third NPN triode collector, third NPN triode emitter
Ground connection, third NPN transistor base, pwm signal input port, the 4th NPN transistor base are connected；4th NPN triode collection
Electrode, the 5th NPN transistor base, the second PNP triode base stage are connected, the 4th NPN triode emitter, ground wire, the 2nd PNP
Transistor collector is connected, and the 5th NPN triode collector connects power supply VCC, the 5th NPN triode emitter, tri- pole the 2nd PNP
Pipe emitter, K2 grid are connected；
Charging process controls K1 and K2 alternate conduction, and solar panel is connected by K1 and is charged to battery group B1, controls
Control K2 is opened while circuit control K1 closure charging processed, otherwise K2 is connected and given battery group B2 charging control circuit control simultaneously
K1 processed is disconnected；
D1, D2 are the minimum fast diode of forward resistance, always vise two battery group cathode in zero potential；
Charging pwm signal is divided into two-way and removes two group storage battery group charging circuits of control, wherein negated all the way by NPN triode,
Two-way charging circuit works alternatively；Two NPN pipes combine to amplify pwm signal with a PNP pipe, control NMOS tube AOT460's
It closes and opens, meanwhile, charging current is controlled according to different duty ratios；
Discharge process is closed to complete by control circuit control K3 and K4；It is same after parallel connection to guarantee that two group storage battery groups pass through
When give load balancing power supply；Isolation clamp diode plays balanced buffer action, when wherein a group storage battery group voltage is lower, no
Equilibrium is more than certain value, and B2 is charged by K3, K4 of conducting to B1, and reaching two group storage battery group electric voltage equalization circulation is zero；
To under load continuous electric power thus supplied, K3, K4 holding are closed always；
Charging pile suitable for vehicle electric system；
The control circuit of K1, K2 are connected with G1 ... Gn cathode.
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| CN201610587603.5A CN106208315B (en) | 2016-07-25 | 2016-07-25 | The efficiency-timed power supply system of charge and discharge |
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| CN201610587603.5A CN106208315B (en) | 2016-07-25 | 2016-07-25 | The efficiency-timed power supply system of charge and discharge |
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| CN107069824B (en) * | 2017-05-25 | 2023-04-11 | 沈阳清能院清洁能源有限公司 | Photovoltaic grid-connected high-efficiency energy storage and transmission system |
| CN107040033B (en) * | 2017-05-25 | 2023-04-07 | 沈阳清能院清洁能源有限公司 | Charging circuit |
| CN110994762B (en) * | 2020-01-03 | 2023-06-20 | 常州迅安科技股份有限公司 | Power supply control circuit of solar rechargeable automatic dimming filter |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101242105A (en) * | 2008-03-17 | 2008-08-13 | 云南晶能科技有限公司 | Photovoltaic system intelligent complementary control charging/discharging method |
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| CN103208824B (en) * | 2012-01-16 | 2016-12-07 | 华为终端有限公司 | A kind of charging circuit and charger |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101242105A (en) * | 2008-03-17 | 2008-08-13 | 云南晶能科技有限公司 | Photovoltaic system intelligent complementary control charging/discharging method |
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