CN103682397A - Single-battery balancer for vanadium battery - Google Patents
Single-battery balancer for vanadium battery Download PDFInfo
- Publication number
- CN103682397A CN103682397A CN201210335220.0A CN201210335220A CN103682397A CN 103682397 A CN103682397 A CN 103682397A CN 201210335220 A CN201210335220 A CN 201210335220A CN 103682397 A CN103682397 A CN 103682397A
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- Prior art keywords
- circuit unit
- monocell
- equalizing circuit
- battery
- resistance
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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
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04858—Electric variables
- H01M8/04865—Voltage
- H01M8/04873—Voltage of the individual fuel cell
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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
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a single-battery balancer for a vanadium battery. The vanadium battery comprises a plurality of single batteries which are connected with one another in series, and the balancer comprises a plurality of balanced circuit units which are one less than the single batteries. Each balanced circuit unit comprises three terminals, wherein a first terminal and a second terminal are connected with a positive electrode and a negative electrode of the corresponding single battery respectively, and a third terminal is connected with a positive electrode of a next single battery, and the rest can be done in the same manner; each balanced circuit unit comprises a first resistor, a second resistor, a third resistor and a comparator, wherein a central node of the first resistor and the second resistor connected in series is connected with a positive signal input end of the comparator, nodes on two ends serve as the first terminal and the second terminal of the corresponding balanced circuit unit respectively, and an output end of the comparator is serially connected with the corresponding third resistor to form the third terminal. By comparing the voltages of two adjacent single batteries and discharging the high-voltage single battery in real time, the voltage balance can be realized. The single-battery balancer is simple and practical.
Description
Technical field
The present invention relates to a kind of battery equalizer, relate in particular to a kind of monocell equalizer for vanadium cell.
Background technology
Vanadium cell full name is vanadium redox battery (Vanadium Redox Battery, is abbreviated as VRB), is that a kind of active material is and circulates liquid redox cell, progressively enters the commercialization stage at present.Vanadium cell, as a kind of energy storage technology of chemistry, is compared with traditional lead-acid battery, nickel-cadmium cell, and it has many unique distinctions in design, is also applicable to multiple industrial occasions in performance, such as substituting oil machine, stand-by power supply etc.Vanadium cell is that monocell forms by two electrolysis liquid pools and battery unit from level to level.Electrolysis liquid pool is for containing two kinds of different electrolyte.Each battery unit is comprised of two " half-cells ", sandwich barrier film and for the electrode of collected current.In two different " half-cells ", holding the electrolyte of the vanadium of different ions form.Each electrolysis liquid pool is furnished with a pump, for the pipeline in sealing, is each " half-cell " conveying electrolyte.When charged electrolyte flows in battery unit from level to level, electronics just flow to external circuit, Here it is discharge process.When from outside by electron transport during to inside battery, contrary process has just occurred, Here it is gives the charging of the electrolyte in monocell, and then is transmitted back to electrolysis liquid pool by pump.In VRB, electrolyte flows between a plurality of monocells, and voltage is that each single battery voltage series connection forms.
Existing vanadium cell is for each single battery voltage is carried out to balanced equalizer, thus the problem that exists the voltage between each monocell not wait, after long-term use, because of voltage not etc. meeting part monocell is caused to damage, thereby reduce the life-span of whole vanadium cell.
Summary of the invention
Object of the present invention provides a kind of monocell equalizer for vanadium cell with regard to being in order to address the above problem.
The present invention is achieved through the following technical solutions above-mentioned purpose:
Monocell equalizer for vanadium cell of the present invention, described vanadium cell comprises the monocell of a plurality of mutual series connection, described equalizer comprises a plurality of equalizing circuits unit, few one than the quantity of described monocell of the quantity of described equalizing circuit unit, described equalizing circuit unit comprises three terminals, described in first, the first end of equalizing circuit unit is connected with the positive pole of monocell described in first, described in first, the second end of equalizing circuit unit is connected with the negative pole of second described monocell, described in first, the 3rd end of equalizing circuit unit is connected with the positive pole of second described monocell, the first end of second described equalizing circuit unit is connected with the positive pole of second described monocell, the second end of second described equalizing circuit unit is connected with the negative pole of the 3rd described monocell, the 3rd end of second described equalizing circuit unit is connected with the positive pole of the 3rd described monocell, by that analogy, until the first end of equalizing circuit unit is connected with the positive pole of monocell described in penultimate described in last, described in last, the second end of equalizing circuit unit is connected with the negative pole of monocell described in last, described in last, the 3rd end of equalizing circuit unit is connected with the positive pole of monocell described in last, described equalizing circuit unit comprises the first resistance, the second resistance, the 3rd resistance and comparator, the first end of the first end of described the first resistance and described the second resistance is all connected with the positive signal input of described comparator, the negative signal input of described comparator is connected with the first end of described the 3rd resistance with the output of described comparator respectively, after the second end of described the first resistance is connected with the cathode power supply input of described comparator as first terminals of described equalizing circuit unit, after the second end of described the second resistance is connected with the negative power supply input of described comparator as second terminals of described equalizing circuit unit, the second end of described the 3rd resistance is the 3rd terminals of described equalizing circuit unit.
Beneficial effect of the present invention is:
The present invention is by the voltage of more adjacent two monocells, and in real time high voltage monocell is carried out to discharge process, thereby realize electric voltage equalization, reduce in battery use procedure, because voltage does not wait the damage that part monocell is caused, to have extended the life-span of whole vanadium cell; The present invention also has advantages of simple in structure, with low cost, practical.
Accompanying drawing explanation
Fig. 1 is the schematic block circuit diagram of the monocell equalizer for vanadium cell of the present invention;
Fig. 2 is the circuit diagram of equalizing circuit of the present invention unit.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, monocell equalizer for vanadium cell of the present invention, vanadium cell E comprises the monocell of a plurality of mutual series connection, shown in figure is eight monocells, from top to bottom the negative pole of first monocell is connected with the positive pole of second monocell, the negative pole of second monocell is connected with the positive pole of the 3rd monocell, by that analogy, realizes being connected in series between each monocell.
As shown in Figure 1, in the present embodiment, equalizer comprises seven equalizing circuit unit, equalizing circuit unit comprises three terminals, from top to bottom the first end of first equalizing circuit unit and the positive pole of first monocell are connected, the second end of first equalizing circuit unit is connected with the negative pole of second monocell, the 3rd end of first equalizing circuit unit is connected with the positive pole of second monocell, the first end of second equalizing circuit unit is connected with the positive pole of second monocell, the second end of second equalizing circuit unit is connected with the negative pole of the 3rd monocell, the 3rd end of second equalizing circuit unit is connected with the positive pole of the 3rd monocell, by that analogy, until the first end of the 7th equalizing circuit unit is connected with the positive pole of the 7th monocell, the second end of the 7th equalizing circuit unit is connected with the negative pole of the 8th monocell, the 3rd end of the 7th equalizing circuit unit is connected with the positive pole of the 8th monocell.
As shown in Figure 2, equalizing circuit unit comprises the first resistance R 1, the second resistance R 2, the 3rd resistance R 3 and comparator IC, the first end of the first end of the first resistance R 1 and the second resistance R 2 is all connected with the positive signal input of comparator IC, the negative signal input of comparator IC is connected with the first end of the 3rd resistance R 3 with the output of comparator IC respectively, after the second end of the first resistance R 1 is connected with the cathode power supply input of comparator IC as first terminals A of equalizing circuit unit, after the second end of the second resistance R 2 is connected with the negative power supply input of comparator IC as second terminals B of equalizing circuit unit, the second end of the 3rd resistance R 3 is the 3rd terminals C of equalizing circuit unit, first terminals A, second terminals B and the 3rd terminals C are corresponding with first terminals of equalizing circuit unit in Fig. 1, second terminals and the 3rd terminals respectively.In Fig. 2, take monocell E1 and E2 as having exemplified the annexation between equalizing circuit unit and monocell.
The present invention is by the voltage of more adjacent two monocells, and in real time high voltage monocell is carried out to discharge process, thereby realize electric voltage equalization, reduce in battery use procedure, because voltage does not wait the damage that part monocell is caused, to have extended the life-span of whole vanadium cell.
Claims (1)
1. the monocell equalizer for vanadium cell, described vanadium cell comprises the monocell of a plurality of mutual series connection, it is characterized in that: described equalizer comprises a plurality of equalizing circuits unit, few one than the quantity of described monocell of the quantity of described equalizing circuit unit, described equalizing circuit unit comprises three terminals, described in first, the first end of equalizing circuit unit is connected with the positive pole of monocell described in first, described in first, the second end of equalizing circuit unit is connected with the negative pole of second described monocell, described in first, the 3rd end of equalizing circuit unit is connected with the positive pole of second described monocell, the first end of second described equalizing circuit unit is connected with the positive pole of second described monocell, the second end of second described equalizing circuit unit is connected with the negative pole of the 3rd described monocell, the 3rd end of second described equalizing circuit unit is connected with the positive pole of the 3rd described monocell, by that analogy, until the first end of equalizing circuit unit is connected with the positive pole of monocell described in penultimate described in last, described in last, the second end of equalizing circuit unit is connected with the negative pole of monocell described in last, described in last, the 3rd end of equalizing circuit unit is connected with the positive pole of monocell described in last, described equalizing circuit unit comprises the first resistance, the second resistance, the 3rd resistance and comparator, the first end of the first end of described the first resistance and described the second resistance is all connected with the positive signal input of described comparator, the negative signal input of described comparator is connected with the first end of described the 3rd resistance with the output of described comparator respectively, after the second end of described the first resistance is connected with the cathode power supply input of described comparator as first terminals of described equalizing circuit unit, after the second end of described the second resistance is connected with the negative power supply input of described comparator as second terminals of described equalizing circuit unit, the second end of described the 3rd resistance is the 3rd terminals of described equalizing circuit unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210335220.0A CN103682397A (en) | 2012-09-12 | 2012-09-12 | Single-battery balancer for vanadium battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210335220.0A CN103682397A (en) | 2012-09-12 | 2012-09-12 | Single-battery balancer for vanadium battery |
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| CN103682397A true CN103682397A (en) | 2014-03-26 |
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| CN201210335220.0A Pending CN103682397A (en) | 2012-09-12 | 2012-09-12 | Single-battery balancer for vanadium battery |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110289599A (en) * | 2019-05-17 | 2019-09-27 | 青海能高新能源有限公司 | A kind of voltage equalizing protection circuit, redox flow battery energy storage system and application method |
| CN112659927A (en) * | 2020-10-14 | 2021-04-16 | 中国汽车技术研究中心有限公司 | Method, apparatus, device and medium for determining performance characteristics of fuel cell stack for vehicle |
| CN116231024A (en) * | 2023-04-11 | 2023-06-06 | 西安西域美唐电竞科技有限公司 | Energy storage method of all-vanadium liquid flow energy storage device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2814766Y (en) * | 2005-04-05 | 2006-09-06 | 苏州星恒电源有限公司 | Battery equalizing circuit |
| CN101047254A (en) * | 2006-03-27 | 2007-10-03 | 中国科学院大连化学物理研究所 | High power oxidation, reduction liquid energy-storage pile modular structure and its group mode |
| CN102427140A (en) * | 2011-12-21 | 2012-04-25 | 东方电气集团东方汽轮机有限公司 | Control system for all-vanadium redox flow energy storage cell stack |
| CN202871908U (en) * | 2012-09-12 | 2013-04-10 | 成都天宇创新科技有限公司 | Monocell balancer for vanadium cell |
-
2012
- 2012-09-12 CN CN201210335220.0A patent/CN103682397A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2814766Y (en) * | 2005-04-05 | 2006-09-06 | 苏州星恒电源有限公司 | Battery equalizing circuit |
| CN101047254A (en) * | 2006-03-27 | 2007-10-03 | 中国科学院大连化学物理研究所 | High power oxidation, reduction liquid energy-storage pile modular structure and its group mode |
| CN102427140A (en) * | 2011-12-21 | 2012-04-25 | 东方电气集团东方汽轮机有限公司 | Control system for all-vanadium redox flow energy storage cell stack |
| CN202871908U (en) * | 2012-09-12 | 2013-04-10 | 成都天宇创新科技有限公司 | Monocell balancer for vanadium cell |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110289599A (en) * | 2019-05-17 | 2019-09-27 | 青海能高新能源有限公司 | A kind of voltage equalizing protection circuit, redox flow battery energy storage system and application method |
| CN110289599B (en) * | 2019-05-17 | 2024-06-07 | 青海能高新能源有限公司 | Voltage equalizing protection circuit, flow battery energy storage system and use method |
| CN112659927A (en) * | 2020-10-14 | 2021-04-16 | 中国汽车技术研究中心有限公司 | Method, apparatus, device and medium for determining performance characteristics of fuel cell stack for vehicle |
| CN116231024A (en) * | 2023-04-11 | 2023-06-06 | 西安西域美唐电竞科技有限公司 | Energy storage method of all-vanadium liquid flow energy storage device |
| CN116231024B (en) * | 2023-04-11 | 2023-11-10 | 西安西域美唐电竞科技有限公司 | Energy storage method of all-vanadium liquid flow energy storage device |
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Application publication date: 20140326 |