CN105762787A - Lithium battery and zinc-bromine flow battery hybrid energy storage management system - Google Patents
Lithium battery and zinc-bromine flow battery hybrid energy storage management system Download PDFInfo
- Publication number
- CN105762787A CN105762787A CN201610310737.2A CN201610310737A CN105762787A CN 105762787 A CN105762787 A CN 105762787A CN 201610310737 A CN201610310737 A CN 201610310737A CN 105762787 A CN105762787 A CN 105762787A
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- CN
- China
- Prior art keywords
- zinc
- battery
- lithium battery
- flow battery
- bromine flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 31
- ZRXYMHTYEQQBLN-UHFFFAOYSA-N [Br].[Zn] Chemical compound [Br].[Zn] ZRXYMHTYEQQBLN-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 238000004146 energy storage Methods 0.000 title abstract description 11
- 238000004891 communication Methods 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims description 4
- 230000007547 defect Effects 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 description 5
- 239000003792 electrolyte Substances 0.000 description 3
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 2
- 229910052794 bromium Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- VNDYJBBGRKZCSX-UHFFFAOYSA-L zinc bromide Chemical compound Br[Zn]Br VNDYJBBGRKZCSX-UHFFFAOYSA-L 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- BNOODXBBXFZASF-UHFFFAOYSA-N [Na].[S] Chemical compound [Na].[S] BNOODXBBXFZASF-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229940102001 zinc bromide Drugs 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
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/10—Parallel operation of dc sources
-
- H02J13/0003—
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Secondary Cells (AREA)
- Hybrid Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a lithium battery and zinc-bromine flow battery hybrid energy storage management system. The management system is characterized in that five electric piles of a zinc-bromine flow battery are connected in series and then connected to a low-voltage terminal of a DC/DC converter, and the DC/DC converter is subjected to isolating voltage boosting and then divided into 16 paths to be output to a direct-current bus (DC Bus) in parallel; a lithium battery is divided into four paths of converters and then connected to the low-voltage terminal of the DC/DC converter to be converged with the zinc-bromine flow battery on the DC Bus, unified output is achieved, and a direct-current output port is formed and directly connected with a direct-current terminal of a PCS. The lithium battery and zinc-bromine flow battery hybrid energy storage management system has the advantages that the defect of single battery application in a traditional micro-grid system is overcome, the technical problem that the lithium battery cannot achieve long-time deep discharge is solved, the problem that the flow battery cannot achieve rapid rate discharge is solved, the application scale and application prospect of stored energy in future micro-grids and smart power grids are greatly extended, and a higher popularization value is achieved.
Description
Technical field
The present invention relates to the field of comprehensive utilization of lithium battery and zinc-bromine flow battery, particularly to the hybrid energy-storing management system of a kind of lithium battery with zinc-bromine flow battery.
Background technology
Lithium battery is a outstanding electrokinetic cell, efficiency for charge-discharge is high, energy multiplying power discharging etc., but when large-capacity power stored energy application owing to jumbo lithium battery is made up of multiple monocells, when capacity is big to a certain extent, after the quantity of monocell reaches some, the consistency problem between battery just highlights.Discharge and recharge is had strict requirement by lithium battery simultaneously, overcharges or crosses to put and battery catches fire all can be caused to explode, and particularly during Large Copacity application, when battery series-parallel connection quantity is a lot, safety issue is still just prominent.
Zinc bromide electrolyte is a kind of faintly acid saline solution, nontoxic in chemical reaction process, harmless, produce without any noxious substance, precipitates out total system safety and environmental protection without any fuel gas；Depth of discharge is up to 100%, even if still can discharge by rated power below 10% at SOC；The energy density of zinc-bromine bettery, at more than 100Wh/L, utilizes its fluid flow characteristics can as high capacity cell, and minimum module is 50kWh, is 1MWh to the maximum, and multiple stage wired in parallel can form hundred MW class systems.It is suitable for supporting with the extensive renewable sources of energy such as solar energy, wind energy, as energy type energy-storage battery.Simultaneously the temperature range of operation of zinc-bromine bettery be between-30～50 DEG C, is suitable for northern China in winter of district's cold and south extremely hot summer.The service life of battery system can more than 20 years, and electrolyte is lossless in running, can unlimited recycle for a long time；The pile life-span can charge and discharge 5000 times when degree of depth discharge and recharge；When shallow fill shallow putting can more than 10000 times, pile only need to change pile after losing efficacy, and other parts may continue to use, and the expense changing pile only accounts for about the 10% of system cost.But the energy efficiency of zinc bromine liquid flow energy storage battery only has 70%, lower than sodium-sulphur battery and lithium battery；Zinc-bromine bettery system needs the startup time of 15 minutes when startup optimization first, for electrolyte circulation system is carried out prerun.Zinc-bromine bettery system is energy-type cells, and maximum discharge-rate is 0.5C, it does not have the advantage of electrokinetic cell energy multiplying power discharging.
Shown in sum up, how lithium battery and zinc-bromine bettery being combined into one by certain proportioning, give full play to the advantage of lithium battery and zinc-bromine bettery, forming a kind of technical tactic having complementary advantages between different battery is the problem that prior art needs to solve.
Summary of the invention
The technical problem to be solved is to provide the hybrid energy-storing management system of a kind of lithium battery and zinc-bromine flow battery, lithium battery and zinc-bromine bettery is combined into one by certain proportioning, gives full play to the advantage of lithium battery and zinc-bromine bettery.
For reaching above-mentioned purpose, the technical scheme is that, a kind of hybrid energy-storing management system of lithium battery and zinc-bromine flow battery, it is characterized in that: after described management system includes five pile series connection of zinc-bromine flow battery, access the low-pressure end of DC/DC current transformer, after DC/DC current transformer isolation boosting, be divided into 16 road Parallel opertation to DCBus dc bus；Lithium battery is divided into No. 4 current transformers to access the low-pressure end of DC/DC current transformers, confluxes with zinc-bromine flow battery and unifies output, constitute DC output end mouth, be directly connected with the DC terminal of PCS on DCBus dc bus.
The communication terminal of described DC/DC current transformer outfan No. 20 current transformer taps into into master controller simultaneously, and each current transformer of management system is issued discharge and recharge instruction by master controller.
Described master controller is provided with a standard ethernet communication interface, and master controller is connected to SCADA host computer by too Netcom's communication interface, it is achieved the transmission exchange of data.
A kind of hybrid energy-storing management system of lithium battery and zinc-bromine flow battery, owing to adopting above-mentioned structure, advantages of the present invention solves the defect of single battery applications in tradition micro-grid system, what namely overcome lithium battery can not all technical problems of deep discharge and flow battery can not quick multiplying power discharging etc. problems for a long time, it is greatly expanded application scale and the application prospect of energy storage in following microgrid and intelligent grid, there is high promotional value.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation；
Fig. 1 is the hybrid energy-storing management system structure schematic diagram of a kind of lithium battery of the present invention and zinc-bromine flow battery.
Detailed description of the invention
Namely the requirement of energy-storage battery is had the requirement of instantaneous frequency modulation peak regulation by present microgrid or smart electric grid system, there is again the requirement of the peak load shifting of long-time discharge and recharge, and existing microgrid configures only with single lithium battery, or flow battery, can not the demand of totally linearization microgrid, cause that the application of energy-storage battery cannot be fast-developing.
Meeting the different application demand of microgrid, be necessary for, in conjunction with electrokinetic cell and energy-type cells, playing respective advantage, respond the various demands of micro-grid system comprehensively, this is only the dominant direction of energy-storage battery development.
The present invention is on the basis of above-mentioned application demand and original design drawback, mixed energy storage system is particularly important, as shown in Figure 1, after the present invention includes five pile series connection of zinc-bromine flow battery, access the low-pressure end of DC/DC current transformer, after DC/DC current transformer isolation boosting, be divided into 16 road Parallel opertation to DCBus dc bus；Lithium battery is divided into No. 4 current transformers to access the low-pressure end of DC/DC current transformers, confluxes with zinc-bromine flow battery and unifies output, constitute DC output end mouth, be directly connected with the DC terminal of PCS on DCBus dc bus.
The communication terminal of DC/DC current transformer outfan No. 20 current transformer taps into into master controller simultaneously, and each current transformer of management system is issued discharge and recharge instruction by master controller.Master controller is provided with a standard ethernet communication interface, and master controller is connected to SCADA host computer by too Netcom's communication interface, it is achieved the transmission exchange of data.
In zinc-bromine flow battery system, after five pile series connection, access the low-pressure end of DC/DC current transformer, each pile port voltage is 100VDC, is 500VDC after series connection, one end 500VDC of current transformer, being 800VDC, totally No. 16 current transformer after isolation boosting, current transformer carries out parallel connection at 800VDC end.
Concrete, in lithium battery system, 50kWh is a standard module, accesses the low-pressure end of lithium battery DC/DC current transformer, totally No. 4 current transformer, and unification boosts to 800VDC.Confluxing on DCBus dc bus with zinc-bromine flow battery, unified output, dc bus end is the electric output port of whole system, can directly be connected with the DC terminal of PCS.
Tap into into master controller at No. 20 current transformer communication terminals simultaneously, the nervus centralis functioning as unified control system of this master controller, underlying system is by engaging in the dialogue with communication and each current transformer, and can send instructions under the discharge and recharge of whole system, and controls the discharge and recharge logic of whole system.Master controller exports a standard ethernet communication interface simultaneously, and intrasystem all data can be connected to SCADA host computer by this communication interface, it is achieved the transmission exchange of data.
In existing microgrid, the mixed energy storage system of application generally all adopts the Traditional control pattern confluxed at AC.The design of this control model is simple, comparatively ripe, for the different separately performed independent control of battery, does not affect each other.Shortcoming is multiple battery mixing, and every kind of battery will be furnished with respective DC-to-AC converter, first efficiency low (having the unsteady flow loss that direct current arrives exchange), and second cost is high, and inverter configuration quantity is more.
Hybrid energy-storing battery management of the present invention and control system adopt DC side to conflux control as a standard design, adapt with microgrid demand, independent control.The DC side control design case that confluxes is prone to energy control and scheduling, is substantially reduced cost, it is provided that efficiency and be prone to extension, the general warranty security reliability of system from technology and structure.
The interface of the present invention and other charging/discharging apparatus is in that dc bus, the nominal value of dc bus is 800VDC, the charging/discharging voltage scope of every kind of battery can be arbitrarily set according to project demands, namely can preferentially charge by equipment lithium battery, it is also possible to flow battery preferential discharge etc. is set.Arranging rear charge and discharge control is that the height according to busbar voltage carrys out Auto-matching.
Above in conjunction with accompanying drawing, the present invention is exemplarily described; the obvious present invention implements and is not subject to the restrictions described above; as long as have employed the various improvement that technical solution of the present invention carries out, or not improved that directly apply to other occasion, all within protection scope of the present invention.
Claims (3)
1. the hybrid energy-storing management system of a lithium battery and zinc-bromine flow battery, it is characterized in that: after described management system includes five pile series connection of zinc-bromine flow battery, access the low-pressure end of DC/DC current transformer, after DC/DC current transformer isolation boosting, be divided into 16 road Parallel opertation to DCBus dc bus；Lithium battery is divided into No. 4 current transformers to access the low-pressure end of DC/DC current transformers, confluxes with zinc-bromine flow battery and unifies output, constitute DC output end mouth, be directly connected with the DC terminal of PCS on DCBus dc bus.
2. a kind of lithium battery according to claim 1 manages system with the hybrid energy-storing of zinc-bromine flow battery, it is characterized in that: the communication terminal of described DC/DC current transformer outfan No. 20 current transformer taps into into master controller simultaneously, and each current transformer of management system is issued discharge and recharge instruction by master controller.
3. a kind of lithium battery according to claim 2 manages system with the hybrid energy-storing of zinc-bromine flow battery, it is characterized in that: described master controller is provided with a standard ethernet communication interface, master controller is connected to SCADA host computer by too Netcom's communication interface, it is achieved the transmission exchange of data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610310737.2A CN105762787A (en) | 2016-05-12 | 2016-05-12 | Lithium battery and zinc-bromine flow battery hybrid energy storage management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610310737.2A CN105762787A (en) | 2016-05-12 | 2016-05-12 | Lithium battery and zinc-bromine flow battery hybrid energy storage management system |
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| Publication Number | Publication Date |
|---|---|
| CN105762787A true CN105762787A (en) | 2016-07-13 |
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| CN201610310737.2A Pending CN105762787A (en) | 2016-05-12 | 2016-05-12 | Lithium battery and zinc-bromine flow battery hybrid energy storage management system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106252557A (en) * | 2016-08-31 | 2016-12-21 | 安徽远东船舶有限公司 | The boats and ships battery module that a kind of lithium vanadium combines |
| CN106374605A (en) * | 2016-11-11 | 2017-02-01 | 国网电力科学研究院武汉南瑞有限责任公司 | Composite energy storage device for public charging stations and preparation method thereof |
| CN107302259A (en) * | 2017-07-25 | 2017-10-27 | 国网甘肃省电力公司 | A kind of power taking car for vehicle-mounted uninterruptible power system |
| CN112165113A (en) * | 2020-11-03 | 2021-01-01 | 国网吉林省电力有限公司电力科学研究院 | Method for guaranteeing electric energy quality of micro-grid based on control over hybrid energy storage system |
| CN112202160A (en) * | 2020-10-20 | 2021-01-08 | 国网四川省电力公司电力科学研究院 | Direct-hanging bus type energy storage control system and control method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102842964A (en) * | 2012-09-25 | 2012-12-26 | 上海电气集团股份有限公司 | Energy storage access system |
| CN104701559A (en) * | 2015-03-20 | 2015-06-10 | 安徽美能储能系统有限公司 | Management control system used for zinc bromine liquid flow energy storing |
| CN205595428U (en) * | 2016-05-12 | 2016-09-21 | 安徽美能储能系统有限公司 | A mix energy storage pipe reason system that is used for lithium cell and zinc bromine redox flow battery |
-
2016
- 2016-05-12 CN CN201610310737.2A patent/CN105762787A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102842964A (en) * | 2012-09-25 | 2012-12-26 | 上海电气集团股份有限公司 | Energy storage access system |
| CN104701559A (en) * | 2015-03-20 | 2015-06-10 | 安徽美能储能系统有限公司 | Management control system used for zinc bromine liquid flow energy storing |
| CN205595428U (en) * | 2016-05-12 | 2016-09-21 | 安徽美能储能系统有限公司 | A mix energy storage pipe reason system that is used for lithium cell and zinc bromine redox flow battery |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106252557A (en) * | 2016-08-31 | 2016-12-21 | 安徽远东船舶有限公司 | The boats and ships battery module that a kind of lithium vanadium combines |
| CN106374605A (en) * | 2016-11-11 | 2017-02-01 | 国网电力科学研究院武汉南瑞有限责任公司 | Composite energy storage device for public charging stations and preparation method thereof |
| CN107302259A (en) * | 2017-07-25 | 2017-10-27 | 国网甘肃省电力公司 | A kind of power taking car for vehicle-mounted uninterruptible power system |
| CN112202160A (en) * | 2020-10-20 | 2021-01-08 | 国网四川省电力公司电力科学研究院 | Direct-hanging bus type energy storage control system and control method |
| CN112165113A (en) * | 2020-11-03 | 2021-01-01 | 国网吉林省电力有限公司电力科学研究院 | Method for guaranteeing electric energy quality of micro-grid based on control over hybrid energy storage system |
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Application publication date: 20160713 |
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