CN204007711U - The operational factor Acquisition Circuit of flow battery charge and discharge system - Google Patents
The operational factor Acquisition Circuit of flow battery charge and discharge system Download PDFInfo
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- CN204007711U CN204007711U CN201420430742.3U CN201420430742U CN204007711U CN 204007711 U CN204007711 U CN 204007711U CN 201420430742 U CN201420430742 U CN 201420430742U CN 204007711 U CN204007711 U CN 204007711U
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- flow battery
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- signal isolation
- discharge system
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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
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The utility model relates to a kind of flow battery and fills, the operational factor Acquisition Circuit of discharge system, comprise single-chip microcomputer U1, temperature sensor U6, pressure transducer U7, flow sensor U8 and communication interface circuit U3, single-chip microcomputer U1 connecting communication interface circuit U3, also comprise signal isolation circuit U13, signal isolation circuit U14 and difference channel U12, described temperature sensor U6 is encapsulated in flow battery pipeline U2, respectively with signal isolation circuit U13, signal isolation circuit U14 connects, described signal isolation circuit U13, signal isolation circuit U14 connects respectively single-chip microcomputer U1, described pressure transducer U7 is encapsulated in flow battery pipeline U2, connect difference channel U12, described difference channel U12 connects single-chip microcomputer U1, flow sensor U8 is arranged in flow battery pipeline U2.Compared with prior art, the utlity model has that reliability is strong, low cost and other advantages.
Description
Technical field
The utility model relates to a kind of Acquisition Circuit, especially relates to a kind of operational factor Acquisition Circuit of flow battery charge and discharge system.
Background technology
Utilizing the renewable energy power generation such as wind energy, sun power is the topmost mode that the mankind utilize generation of electricity by new energy in the future.Because being subject to natural cause, wind energy, solar electrical energy generation process affect as weather etc., have randomness, discontinuous feature, the electric energy that is difficult to keep stable is exported, and the apparatus for storing electrical energy of needs and certain scale matches, the electric power system of complete, ensures continual and steady electric power supply.Therefore, exploitation electric energy conversion efficiency accumulator system high, that storage volume is large, economic performance is good becomes the key problem in technology that utilizes generation of electricity by new energy.With various forms of energy storage technologies, the feature such as such as retaining energy-accumulating power station, high speed flywheel mechanical energy storage, superconducting energy storage etc. are compared, and it is high that electrochemical energy storage has energy conversion efficiency, and mobility is strong has unique advantage in all kinds of energy storage technologies.In various electrochemical energy storage technology, flow battery system has large capacity electrical power storage and Efficient Conversion function, and the feature of long service life, environmental protection, safety, is easy to match with wind energy, solar electrical energy generation, can significantly reduce equipment manufacturing cost, for generation of electricity by new energy provides technique guarantee.For network system energy storage, the uninterrupted power source that is suitable for medium-scale industrial enterprise, hotel, government department uses, and can effectively improve grid supply quality, completes " peak load shifting " effect of electrical network.
All-vanadium flow battery (Vanadium Redox Battery, VRB) be a kind of mechanism of new electrochemical power sources, mutually transform the storage and the release that realize electric energy by the vanadium ion of different valence state, use v element of the same race composition battery system, avoided variety classes active substance between positive and negative half cell to interpenetrate the cross pollution of generation from principle.The schematic diagram of flow battery system as shown in Figure 3, use is dissolved in electrolytic solution different valence state vanadium ion as anode and negative electrode active material, anode electrolyte and negative pole electrolytic solution separately store, avoid battery storage process self-discharge phenomenon from principle, be suitable for extensive thermal energy storage process application, anode electrolyte storage tank B and negative pole electrolytic solution storage tank A for liquid stream battery stack E provides electrolytic solution, are power source loads C power supply by magnetic drive pump D.In the time that the power of wind energy, device of solar generating exceedes output rating, by the charging to flow battery, be that chemical energy is stored in the ion pair of different valence state by electric energy conversion; In the time that Blast Furnace Top Gas Recovery Turbine Unit (TRT) can not meet output rating, flow battery starts electric discharge, and the chemical energy storing is converted into electric energy, ensures stable electrical power stage.Because flow battery is for the significance of the renewable energy power generation such as wind energy, sun power process, obtain common concern at home and abroad as gordian technique.
, on electrode, will there is following redox reaction in all-vanadium flow battery charge/discharge operational process.
Anodal reaction:
Negative reaction:
Because anode electrolyte and negative pole electrolytic solution are respectively in oxidisability valence state and reductibility valence state, no matter be the charge/discharge operational process in pile inside, or electrolytic solution course of conveying, need to keep anode electrolyte and negative pole electrolytic solution not to mix, otherwise between the vanadium ion of different valence state, exchang electron produces self-discharge phenomenon each other, has a strong impact on battery efficiency.
In flow battery charge and discharge system, because flow battery fills, runnability stability and the temperature of place system, pressure, flow control is relevant, the temperature of flow battery, pressure, the collection of flow operational factor is a very important link, thermal resistance or thermistor temperature sensor for the temperature acquisition of existing flow battery, and collection signal is a resistance value along with temperature variation, become the electric current of 4～20mA or 0 to 5V voltage signal by signal after transmitter, then pass to CPU and process.This mode circuit hardware cost is high, is easily subject to the interference of peripheral heavy current installation in signal transduction process, affects measurement data unstable.Existing pressure, what flow collection was exported is simulating signal, and signal is directly given CPU, in the time having outside heavy current installation to disturb, will CPU be produced and be disturbed, and serious meeting causes CPU deadlock.
Utility model content
The purpose of this utility model is exactly the operational factor Acquisition Circuit that the flow battery charge and discharge system that a kind of cost is low, reliability is strong is provided in order to overcome the defect that above-mentioned prior art exists.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of flow battery fills, the operational factor Acquisition Circuit of discharge system, comprise single-chip microcomputer U1, temperature sensor U6, pressure transducer U7, flow sensor U8 and communication interface circuit U3, described single-chip microcomputer U1 connecting communication interface circuit U3, also comprise signal isolation circuit U13, signal isolation circuit U14 and difference channel U12, described temperature sensor U6 is encapsulated in flow battery pipeline U2, respectively with signal isolation circuit U13, signal isolation circuit U14 connects, described signal isolation circuit U13, signal isolation circuit U14 connects respectively single-chip microcomputer U1, described pressure transducer U7 is encapsulated in flow battery pipeline U2, connect difference channel U12, described difference channel U12 connects single-chip microcomputer U1, described flow sensor U8 is arranged in flow battery pipeline U2, connect difference channel U12.
Described single-chip microcomputer U1 adopts and flies power Pu LPC2194.
Described temperature sensor U6 adopts DS18B20.
Described pressure transducer U7 adopts FQV47FMT00001B4A0000.
Described flow sensor U8 adopts LWGY-32.
Described signal isolation circuit U13, signal isolation circuit U14 adopts optical coupling isolator.
Described temperature sensor U6 and the connecting line of signal isolation circuit U13, signal isolation circuit U14 adopt shielded cable.
Described pressure transducer U7, flow sensor U8 and the connecting line of difference channel U12 adopt shielded cable.
Described communication interface circuit U3 adopts CAN bus communication interface circuit.
This Acquisition Circuit also comprises that CAN turns 485 communication interface U11, frequency converter U9 and motor U10, described CAN turns 485 communication interfaces connecting communication interface circuit U3 and frequency converter U9 respectively, described frequency converter U9 connects motor U10, and described motor U10 is arranged on flow battery pipeline U2.
Compared with prior art, the utlity model has following advantage:
1) the utility model adopts semiconductor temperature sensor, between single-chip microcomputer and temperature sensor, adopt digital communication to be connected, and use up and occasionally signal is isolated completely, scene temperature is directly transmitted with digital form, improve the anti-interference of system, measured reliability high.There is temperature-compensation circuit semiconductor temperature sensor inside, and temperature-compensation circuit that need not be extra, has simplified temperature measurement circuit, has reduced hardware circuit cost.Interface protocol that single-chip microcomputer provides according to semiconductor temperature sensor connects, the directly Temperature numerical of reading temperature sensor, and temperature measurement accuracy ensures by manufacturer production, need not straightened up in place.
2) the utility model separates being connected between pressure transducer and flow sensor and single-chip microcomputer with difference channel, has ensured the reliability of single-chip microcomputer.
Brief description of the drawings
Fig. 1 is the operational factor Acquisition Circuit block scheme of the utility model flow battery charge and discharge system;
Fig. 2 is the operational factor Acquisition Circuit figure of a kind of flow battery charge and discharge system in the utility model example;
Fig. 3 is flow battery system structural representation.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.The present embodiment is implemented as prerequisite taking technical solutions of the utility model, provided detailed embodiment and concrete operating process, but protection domain of the present utility model is not limited to following embodiment.
As Fig. 1, described in Fig. 2, with the temperature in a 5KW flow battery system, pressure, the collection of flow is embodiment, flow battery is by battery pile U4, flow battery pipeline U2 and electrolytic solution U5, between battery pile U4 and electrolytic solution U5, form closed circuit by flow battery pipeline U2, flow battery fills, the operational factor Acquisition Circuit of discharge system comprises single-chip microcomputer U1, temperature sensor U6, pressure transducer U7, flow sensor U8 and communication interface circuit U3, single-chip microcomputer U1 connecting communication interface circuit U3, also comprise signal isolation circuit U13, signal isolation circuit U14 and difference channel U12, the singlechip chip that single-chip microcomputer U1 adopts is Philip LPC2194, semiconductor temperature sensor adopts DS18B20 product, temperature measurement range can meet the requirement of current flow battery operating temperature range-5～50 DEG C, pressure transducer U7 adopts FQV47FMT00001B4A0000, flow sensor U8 adopts LWGY-32, signal isolation circuit U13, signal isolation circuit U14 adopts optical coupling isolator, communication interface circuit U3 adopts CAN bus communication interface circuit.
Temperature sensor U6 is encapsulated in flow battery pipeline U2, power input connects 5V voltage, earth terminal connects respectively the GND end of signal isolation circuit U13, "-" end of signal isolation circuit U14, signal output part connects respectively "+" end, the In end of signal isolation circuit U14, resistance R 6 one end of signal isolation circuit U13, and resistance R 6 other ends connect 5V voltage; The VCC end of signal isolation circuit U13 connects 3.3V voltage, and the GND that GND end connects single-chip microcomputer holds In end to connect respectively switch value input interface IO2, resistance R 7 one end of single-chip microcomputer, and the other end of resistance R 7 connects 3.3V voltage; The VCC end of signal isolation circuit U14 connects 5V voltage, and "-" end connects the GND end of single-chip microcomputer, and "+" end connects respectively the switch value input interface IO1 of single-chip microcomputer, one end of resistance R 5; The other end of resistance R 5 connects 3.3V voltage;
Pressure transducer U7 is encapsulated in flow battery pipeline U2, power input connects 24V voltage, signal output part connects respectively difference channel U12's " In1+ " end, capacitor C 2 one end, resistance R 2 one end, and the other end of capacitor C 2, the other end of resistance R 2 all connect the earth;
Flow sensor U8 is arranged in flow battery pipeline U2, power input connects 24V voltage, signal output part connects respectively difference channel U12's " In2+ " end, capacitor C 3 one end, resistance R 3 one end, and the other end of capacitor C 3, the other end of resistance R 3 all connect the earth; " In1-" end, " In2-" end of difference channel U12 all connect the earth, and GND end connects the GND end of single-chip microcomputer, and " Vo1+ " end connects the analog input interface AIN1 of single-chip microcomputer, and " Vo2+ " end connects the analog input interface AIN2 of single-chip microcomputer;
Wherein, the connecting line of temperature sensor U6 and signal isolation circuit U13, signal isolation circuit U14 adopts shielded cable; The connecting line of pressure transducer U7, flow sensor U8 and difference channel U12 adopts shielded cable;
Also comprise that CAN turns 485 communication interface U11, frequency converter U9 and motor U10, CAN turns 485 communication interface connecting communication interface circuit U3, its GND end connects the GND end of frequency converter U9, its " 485R+ " end connects " 485R+ " end of frequency converter U9, its " 485R-" end connects " 485R-" end of frequency converter U9, frequency converter U9 input end connects 220VAC, and output U, V, the W end of its control signal connect respectively motor U10, and motor U10 is arranged on flow battery pipeline U2.
Temperature sensor U6 is semiconductor temperature sensor, be arranged in flow battery pipeline U2, in the time that electrolytic solution U5 flows through flow battery pipeline U2, the temperature of electrolytic solution U5 is measured by temperature sensor U6, temperature signal sends to single-chip microcomputer U1 through signal isolation circuit U13, signal isolation circuit U14, and single-chip microcomputer U1 software is strictly by the sequential requirement reading temperature sensor U6 numerical value of DS18B20, pressure transducer U7 is analog quantity pressure transducer, is arranged in flow battery pipeline U2, and in the time that electrolytic solution U5 flows through pipeline, the pressure of electrolytic solution is by the perception of pressure transducer U7 institute, and pressure signal sends to single-chip microcomputer U1 through difference channel U12, flow sensor U8 is analog quantity flow sensor, be arranged in flow battery pipeline U2, in the time that electrolytic solution U5 flows through flow sensor U8, the flow of electrolytic solution U5 is gathered by flow sensor U8, flow signal sends to single-chip microcomputer U1 through difference channel U12, realize flow battery temperature, pressure, the acquisition function of flow, the temperature of single-chip microcomputer U1 based on collecting, pressure, flow value is to communication interface circuit U3 output CAN bus signals, communication interface circuit U3 output CAN bus signals is after CAN turns 485 communication interface U11 and changes, input converter U9, frequency converter U9 controls motor U10 rotating speed, motor U10 drives electrolytic solution U5 flowing in closed circuit, realize the draining of battery, heat extraction, guarantee flow battery is normally worked.
Claims (10)
1. a flow battery fills, the operational factor Acquisition Circuit of discharge system, comprise single-chip microcomputer U1, temperature sensor U6, pressure transducer U7, flow sensor U8 and communication interface circuit U3, described single-chip microcomputer U1 connecting communication interface circuit U3, it is characterized in that, also comprise signal isolation circuit U13, signal isolation circuit U14 and difference channel U12, described temperature sensor U6 is encapsulated in flow battery pipeline U2, respectively with signal isolation circuit U13, signal isolation circuit U14 connects, described signal isolation circuit U13, signal isolation circuit U14 connects respectively single-chip microcomputer U1, described pressure transducer U7 is encapsulated in flow battery pipeline U2, connect difference channel U12, described difference channel U12 connects single-chip microcomputer U1, described flow sensor U8 is arranged in flow battery pipeline U2, connect difference channel U12.
2. the operational factor Acquisition Circuit of a kind of flow battery charge and discharge system according to claim 1, is characterized in that, described single-chip microcomputer U1 adopts and flies power Pu LPC2194.
3. the operational factor Acquisition Circuit of a kind of flow battery charge and discharge system according to claim 1, is characterized in that, described temperature sensor U6 adopts DS18B20.
4. the operational factor Acquisition Circuit of a kind of flow battery charge and discharge system according to claim 1, is characterized in that, described pressure transducer U7 adopts FQV47FMT00001B4A0000.
5. the operational factor Acquisition Circuit of a kind of flow battery charge and discharge system according to claim 1, is characterized in that, described flow sensor U8 adopts LWGY-32.
6. the operational factor Acquisition Circuit of a kind of flow battery charge and discharge system according to claim 1, is characterized in that, described signal isolation circuit U13, signal isolation circuit U14 adopts optical coupling isolator.
7. the operational factor Acquisition Circuit of a kind of flow battery charge and discharge system according to claim 1, is characterized in that, described temperature sensor U6 and the connecting line of signal isolation circuit U13, signal isolation circuit U14 adopt shielded cable.
8. the operational factor Acquisition Circuit of a kind of flow battery charge and discharge system according to claim 1, is characterized in that, described pressure transducer U7, flow sensor U8 and the connecting line of difference channel U12 adopt shielded cable.
9. the operational factor Acquisition Circuit of a kind of flow battery charge and discharge system according to claim 1, is characterized in that, described communication interface circuit U3 adopts CAN bus communication interface circuit.
10. the operational factor Acquisition Circuit of a kind of flow battery charge and discharge system according to claim 1, it is characterized in that, also comprise that CAN turns 485 communication interface U11, frequency converter U9 and motor U10, described CAN turns 485 communication interfaces connecting communication interface circuit U3 and frequency converter U9 respectively, described frequency converter U9 connects motor U10, and described motor U10 is arranged on flow battery pipeline U2.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420430742.3U CN204007711U (en) | 2014-07-31 | 2014-07-31 | The operational factor Acquisition Circuit of flow battery charge and discharge system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420430742.3U CN204007711U (en) | 2014-07-31 | 2014-07-31 | The operational factor Acquisition Circuit of flow battery charge and discharge system |
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| CN204007711U true CN204007711U (en) | 2014-12-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI560464B (en) * | 2015-08-05 | 2016-12-01 | Chroma Ate Inc | Negative pressure detection system for batteries |
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2014
- 2014-07-31 CN CN201420430742.3U patent/CN204007711U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI560464B (en) * | 2015-08-05 | 2016-12-01 | Chroma Ate Inc | Negative pressure detection system for batteries |
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