CN202474107U - Redox flow cell stack and cell system comprising same - Google Patents
Redox flow cell stack and cell system comprising same Download PDFInfo
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- CN202474107U CN202474107U CN2012200957724U CN201220095772U CN202474107U CN 202474107 U CN202474107 U CN 202474107U CN 2012200957724 U CN2012200957724 U CN 2012200957724U CN 201220095772 U CN201220095772 U CN 201220095772U CN 202474107 U CN202474107 U CN 202474107U
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- 239000007788 liquid Substances 0.000 claims abstract description 134
- 239000003792 electrolyte Substances 0.000 claims abstract description 54
- 229910052720 vanadium Inorganic materials 0.000 claims description 8
- 208000002925 dental caries Diseases 0.000 claims description 3
- 239000003014 ion exchange membrane Substances 0.000 abstract 2
- 210000004027 cell Anatomy 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 5
- 238000007789 sealing Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000004146 energy storage Methods 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910001456 vanadium ion Inorganic materials 0.000 description 2
- 210000004460 N cell Anatomy 0.000 description 1
- 229920000557 Nafion® Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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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 provides a redox flow cell stack and a cell system comprising the redox flow cell stack. The redox flow cell stack comprises a plurality of redox flow frames, flow collecting plates, electrodes and an ion exchange membrane, wherein the plurality of redox flow frames are arranged side by side; the flow collecting plates are arranged in the redox flow frames; the electrodes comprise a plurality of positive electrodes and a plurality of negative electrodes; the positive electrodes and the negative electrodes are arranged among the flow collecting plates; the ion exchange membrane and the flow collecting plates form a plurality of electrolyte chambers for containing electrolytes; two groups of redox flow holes comprising a group of positive redox flow holes and a group of negative redox flow holes are formed on the sides of the redox flow frames; the positive redox flow holes comprise a positive liquid inlet and a positive liquid outlet; the negative redox flow holes comprises a negative liquid inlet and a negative liquid outlet; the liquid inlet and liquid outlet of each group of redox flow holes are arranged in one-to-one correspondence and are communicated with the corresponding electrolyte chambers; the adjacent positive liquid outlet and positive liquid inlet are serially connected and sequentially communicated; and the adjacent negative liquid outlet and negative liquid inlet are serially connected and sequentially communicated. The coulomb efficiency and energy efficiency of the redox cell system are improved.
Description
Technical field
The utility model relates to the flow battery field, especially, relates to a kind of liquid stream battery stack and comprises its battery system.
Background technology
Vanadium redox battery is that a kind of vanadium ion electrolyte with different valence state carries out redox electrochemical reaction appts, can realize the mutual conversion between chemical energy and the electric energy efficiently.Such battery has long service life, and energy conversion efficiency is high, and fail safe is good, and advantages of environment protection can be used for the supporting extensive energy-storage system of wind power generation and photovoltaic generation, is one of electrical network peak load shifting, balanced loaded main selection.Therefore, vanadium redox battery becomes the emphasis that big capacity energy-storage battery is studied gradually in recent years.
Vanadium redox battery is respectively with vanadium ion V
2+/ V
3+And V
4+/ V
5+As the both positive and negative polarity oxidation-reduction pair of battery, both positive and negative polarity electrolyte is stored in respectively in two fluid reservoirs, drive active electrolyte to reacting environment (battery pile) by acidproof liquor pump and be back to again and form the circulating fluid loop in the fluid reservoir, to realize charge and discharge process.In the vanadium redox battery energy-storage system, the quality of stack performance is determining the charge-discharge performance of whole system, especially discharges and recharges power and efficient.Battery pile is to be stacked successively by the multi-disc monocell to compress, and is in series.Wherein, the composition of traditional monolithic flow battery is shown in Fig. 1 a and 1b.1 is liquid flow frame, and 2 is collector plate, and 3 is electrode, and 4 is amberplex, and each assembly is formed cell, forms battery pile 5 through piling up of N cell.
The general design that adopts parallel flow of existing liquid stream battery stack, and the flow battery system of its composition causes system's by-pass current loss bigger also for the design of parallel liquid road, reduces the coulombic efficiency of flow battery system greatly.
The utility model content
The battery system that the utility model purpose is that a kind of liquid stream battery stack is provided and comprises it is to solve the big and inefficient technical problem of enclosed pasture of by-pass current loss.
For realizing above-mentioned purpose, the utility model provides a kind of liquid stream battery stack, comprises that a plurality of liquid flow frames are provided with abreast; Collector plate is arranged in the liquid flow frame; Electrode comprises a plurality of positive poles and negative pole, and positive pole and negative pole are arranged between each collector plate; Amberplex forms a plurality of electrolyte cavitys that hold electrolyte with collector plate; The side of liquid flow frame is provided with two groups of flow mouths; Two groups of flow mouths comprise one group of anodal flow mouth and one group of negative pole flow mouth; Anodal flow mouth comprises anodal inlet and anodal liquid outlet; Negative pole flow mouth comprises negative pole inlet and negative pole liquid outlet, and the inlet in every group of flow mouth and liquid outlet is provided with correspondingly and the electrolyte cavity corresponding with is communicated with; Series sequence is communicated with between adjacent anodal liquid outlet and the anodal inlet, and series sequence is communicated with between adjacent negative pole liquid outlet and the negative pole inlet.
Further, the interior flow direction of n anodal and n+2 inner pairing electrolyte cavity of positive pole is identical, and wherein n is a natural number.
Further, n negative pole is identical with flow direction in the inner pairing electrolyte cavity of n+2 negative pole, and wherein n is a natural number.
Further, the flow in the inner pairing electrolyte cavity of adjacent positive is in the opposite direction.
Further, the flow in the inner pairing electrolyte cavity of adjacent cathode is in the opposite direction.
The utility model also provides a kind of battery system, comprises one or more first kind liquid stream battery stacks, and first kind liquid stream battery stack is aforesaid liquid stream battery stack.
Further, battery system also comprises second type of flow battery, and the electrolyte liquid road of the positive pole of second type of flow battery and negative pole is parallel liquid road.
Further, the parallel connection of the liquid road between a plurality of liquid stream battery stacks is provided with.
Further, the series connection of the liquid road between a plurality of liquid stream battery stacks is provided with.
Further, liquid stream battery stack is the all-vanadium flow battery heap.
The utlity model has following beneficial effect:
Through the series connection of the liquid road in the liquid stream battery stack is provided with, eliminated the by-pass current consumption that voltage difference between each monocell caused when the liquid road was parallelly connected, improved the coulombic efficiency and the energy efficiency of flow battery system.
Except top described purpose, feature and advantage, the utility model also has other purpose, feature and advantage.To do further detailed explanation to the utility model with reference to figure below.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide the further understanding to the utility model, and illustrative examples of the utility model and explanation thereof are used to explain the utility model, do not constitute the improper qualification to the utility model.In the accompanying drawings:
Fig. 1 a is the structural representation of the monolithic flow battery of prior art;
Fig. 1 b is the battery pile sketch map of prior art;
Fig. 2 is to sketch map according to the cross section structure of the liquid stream battery stack of the utility model and anodal electrolyte stream;
Fig. 3 is to sketch map according to the cross section structure of the liquid stream battery stack of the utility model and negative pole electrolyte stream;
Fig. 4 is to sketch map according to the positive pole-face of n liquid flow frame in the liquid stream battery stack of the utility model and anodal electrolyte stream;
Fig. 5 is to sketch map according to the negative pole face of n liquid flow frame in the liquid stream battery stack of the utility model and negative pole electrolyte stream;
Fig. 6 is to sketch map according to the positive pole-face of n+1 liquid flow frame in the liquid stream battery stack of the utility model and anodal electrolyte stream;
Fig. 7 is to sketch map according to the negative pole face of n+1 liquid flow frame in the liquid stream battery stack of the utility model and negative pole electrolyte stream; And
Fig. 8 is the structural representation according to the flow battery system of the utility model.
Embodiment
Embodiment to the utility model is elaborated below in conjunction with accompanying drawing, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
Referring to Fig. 2 and Fig. 7, be provided with abreast according to a plurality of liquid flow frames 1 of the utility model; Collector plate 2 is arranged in the liquid flow frame 1; Electrode 3 comprises a plurality of positive poles and negative pole, and positive pole and negative pole are arranged between each collector plate 2, and amberplex 4 forms a plurality of electrolyte cavitys that hold electrolyte with collector plate 2; The side of liquid flow frame 1 is provided with two groups of flow mouths; Two groups of flow mouths comprise one group of anodal flow mouth and one group of negative pole flow mouth; Anodal flow mouth comprises anodal inlet and anodal liquid outlet; Negative pole flow mouth comprises negative pole inlet and negative pole liquid outlet, and the inlet in every group of flow mouth and liquid outlet is provided with correspondingly and the electrolyte cavity corresponding with is communicated with; Series sequence is communicated with between adjacent anodal liquid outlet and the anodal inlet, and series sequence is communicated with between adjacent negative pole liquid outlet and the negative pole inlet.Through the series connection of the liquid road in the liquid stream battery stack is provided with, eliminated the by-pass current consumption that voltage difference between each monocell caused when the liquid road was parallelly connected, improved the coulombic efficiency and the energy efficiency of flow battery system.
Referring to Fig. 2, the flow in the inner pairing electrolyte cavity of adjacent positive is in the opposite direction.The flow direction that n anodal and n+2 inner pairing electrolyte cavity of positive pole is interior is identical, and wherein n is a natural number.Liquid flow frame 1, collector plate 2, electrode 3 and amberplex 4; Single battery 6 in the battery pile; The direction of arrow is the flow direction of anodal electrolyte in the structure of battery pile horizontal cross-section among the figure, anodal inlet 7, anodal liquid outlet 8.The flow trunk line at anodal inlet 7 places of first liquid flow frame 1 of battery pile is not carved on liquid flow frame 1 and is worn; And the flow trunk line in its exit is carved on liquid flow frame 1 and is worn to next liquid flow frame 1; Thereby the anodal electrolyte outlet of first liquid flow frame 1 becomes the anodal electrolyte import of second liquid flow frame 1, realizes the anodal series connection each other of adjacent single battery 6.
Referring to Fig. 3, the flow in the inner pairing electrolyte cavity of adjacent cathode is in the opposite direction.N negative pole is identical with flow direction in the inner pairing electrolyte cavity of n+2 negative pole, and wherein n is a natural number.Liquid flow frame 1, collector plate 2, electrode 3 and amberplex 4; Single battery 6 in the battery pile; Among the figure direction of arrow be negative pole electrolyte in the structure of battery pile horizontal cross-section flow direction; Negative pole inlet 9; Negative pole liquid outlet 10; The flow trunk line at negative pole inlet 9 places of first liquid flow frame 1 of battery pile is not carved on liquid flow frame 1 and is worn; And the flow trunk line in its exit carves on liquid flow frame 1 and wears to next liquid flow frame 1, thereby the negative pole electrolyte outlet of first liquid flow frame 1 becomes the negative pole electrolyte import of second liquid flow frame 1, realizes that the negative pole of adjacent single battery 6 is connected each other.
Referring to Fig. 4, the positive pole-face 101 of n liquid flow frame 1 and anodal 301 electrolyte stream are to sketch map in the liquid stream battery stack.Collector plate 2 is provided with sign breach 11, the relative position of sign breach 11 each parts of sign; The direction of arrow is represented the flow direction of anodal electrolyte; Negative pole inlet 14 and negative pole liquid outlet 15, and separate by sealing ring between anodal inlet 12 and anodal liquid outlet 13 and the positive electrical polar region.
Referring to Fig. 5, the negative pole face 101 of n liquid flow frame 1 and negative pole 302 electrolyte stream are to sketch map in the liquid stream battery stack.Collector plate 2 is provided with sign breach 11, the relative position of sign breach 11 each parts of sign; The direction of arrow is represented the flow direction of negative pole electrolyte; Separate by sealing ring between anodal inlet 12 and anodal liquid outlet 13 and negative pole inlet 14 and negative pole liquid outlet 15 and the negative electricity polar region.
Referring to Fig. 6, the positive pole-face 102 of n+1 liquid flow frame 1 and anodal 303 electrolyte stream are to sketch map in the liquid stream battery stack.Collector plate 2 is provided with sign breach 11, the relative position of sign breach 11 each parts of sign; 13,12 is the import and the outlet of anodal electrolyte, and the direction of arrow is represented the flow direction of anodal electrolyte; Separate by sealing ring between negative pole inlet 15 and negative pole liquid outlet 14 and anodal inlet 13 and anodal liquid outlet 12 and the positive electrical polar region.
Referring to Fig. 7, the negative pole face 102 of n+1 liquid flow frame 1 and negative pole 304 electrolyte stream are to sketch map in the liquid stream battery stack.Collector plate 2 sign breach 11, the relative position of sign breach 11 each parts of sign; The direction of arrow is represented the flow direction of negative pole electrolyte; Separate by sealing ring between anodal inlet 13 and anodal liquid outlet 12 and negative pole inlet 15 and anodal liquid outlet 14 and the negative electricity polar region.
Referring to Fig. 8, a kind of battery system comprises one or more first kind liquid stream battery stacks, and first kind liquid stream battery stack is aforesaid liquid stream battery stack.Battery system also comprises second type of flow battery, and the electrolyte liquid road of the positive pole of second type of flow battery and negative pole is parallel liquid road.Liquid road parallel connection between a plurality of battery pile is provided with.Liquid road between a plurality of liquid stream battery stacks also can be a series connection setting.In use can use according to the liquid stream battery stack collocation that different needs uses the parallel liquid road of liquid stream battery stack and employing of the prior art in the utility model to be provided with in a battery system; Connected mode between a plurality of liquid stream battery stacks both can be that parallel connection setting also can be a series connection setting, can also the connection in series-parallel combination be provided with.
The flow battery of the utility model can be the flow battery of any system.Preferably the battery pile of the utility model is the all-vanadium flow battery heap.The anodal fluid reservoir 16 and the negative pole fluid reservoir 17 of flow battery system; The liquor pump 18 of anodal electrolyte and the liquor pump 19 of negative pole electrolyte; The battery pile 20 of series design, the number of series-connected cell heap can be adjusted quantity according to different voltages with different or electric current, and the quantity and the area of monocell 6 also can adjust according to different voltages with different or electric current in the series-connected cell heap.For the operating pressure of the liquor pump in the liquid road that reduces to connect, can the pipeline of the junction, liquid road of adjacent two joint monocells 6 be processed arc, reducing the electrolyte flow resistance, and then reduce the pressure of liquor pump.Select the material of high conductivity porous graphite felt as electrode 3 for use, the graphite flat board uses the Nafion film as amberplex 4 as collector plate 2; This battery pack is pressed the utility model mode for instructing; Be one group with four monocells 6 and form battery pile 20, series model is carried out on the liquid road in each battery pile 20, and paralleling model is carried out on the liquid road between each battery pile 20; Ten Battery packs heap 20 is formed a battery system, and preparation has the vanadium cell flow battery system on connection in series-parallel combination liquid road.It is 91.4% that this battery system discharges and recharges coulomb efficient, and voltage efficiency is 83.9%, and energy efficiency is 76.7%.
From above description, can find out that the utility model the above embodiments have realized following technique effect:
Through the series connection of the liquid road in the liquid stream battery stack is provided with, eliminated the by-pass current consumption that voltage difference between each monocell caused when the liquid road was parallelly connected, improved the coulombic efficiency and the energy efficiency of flow battery system.In battery system, can improve system effectiveness through the Combinatorial Optimization battery system structure between series-connected cell heap and the batteries in parallel connection heap.
The preferred embodiment that the above is merely the utility model is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the utility model.
Claims (10)
1. liquid stream battery stack comprises:
A plurality of liquid flow frames (1) are provided with abreast;
Collector plate (2) is arranged in the said liquid flow frame (1);
Electrode (3) comprises a plurality of positive poles and negative pole, and said positive pole and said negative pole are arranged between each said collector plate (2);
Amberplex (4) forms a plurality of electrolyte cavitys that hold electrolyte with said collector plate (2);
It is characterized in that; The side of said liquid flow frame (1) is provided with two groups of flow mouths; Said two groups of flow mouths comprise one group of anodal flow mouth and one group of negative pole flow mouth; Said anodal flow mouth comprises anodal inlet and anodal liquid outlet, and said negative pole flow mouth comprises negative pole inlet and negative pole liquid outlet, and the said inlet in every group of said flow mouth and liquid outlet is provided with correspondingly and the said electrolyte cavity corresponding with is communicated with;
Series sequence is communicated with between adjacent anodal liquid outlet and the anodal inlet, and series sequence is communicated with between adjacent negative pole liquid outlet and the negative pole inlet.
2. liquid stream battery stack according to claim 1 is characterized in that, n said positive pole is identical with flow direction in n+2 the said anodal inner pairing said electrolyte cavity, and wherein n is a natural number.
3. liquid stream battery stack according to claim 1 is characterized in that, n said negative pole is identical with flow direction in n+2 the inner pairing said electrolyte cavity of said negative pole, and wherein n is a natural number.
4. liquid stream battery stack according to claim 1 is characterized in that, the flow in the adjacent said anodal inner pairing said electrolyte cavity is in the opposite direction.
5. liquid stream battery stack according to claim 1 is characterized in that, the flow in the inner pairing said electrolyte cavity of adjacent said negative pole is in the opposite direction.
6. a battery system comprises one or more first kind liquid stream battery stacks, it is characterized in that, said first kind liquid stream battery stack is each described liquid stream battery stack in the claim 1 to 5.
7. battery system according to claim 6 is characterized in that, also comprises second type of flow battery, and the electrolyte liquid road of the positive pole of said second type of flow battery and negative pole is parallel liquid road.
8. battery system according to claim 6 is characterized in that, the liquid road parallel connection between a plurality of said liquid stream battery stacks is provided with.
9. battery system according to claim 6 is characterized in that, the liquid road series connection between a plurality of said liquid stream battery stacks is provided with.
10. battery system according to claim 6 is characterized in that, said liquid stream battery stack is the all-vanadium flow battery heap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200957724U CN202474107U (en) | 2012-03-14 | 2012-03-14 | Redox flow cell stack and cell system comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200957724U CN202474107U (en) | 2012-03-14 | 2012-03-14 | Redox flow cell stack and cell system comprising same |
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| Publication Number | Publication Date |
|---|---|
| CN202474107U true CN202474107U (en) | 2012-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200957724U Expired - Lifetime CN202474107U (en) | 2012-03-14 | 2012-03-14 | Redox flow cell stack and cell system comprising same |
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| Country | Link |
|---|---|
| CN (1) | CN202474107U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593491A (en) * | 2012-03-14 | 2012-07-18 | 中国东方电气集团有限公司 | Liquid flow cell stack and cell system comprising same |
| CN109786783A (en) * | 2019-01-26 | 2019-05-21 | 杭州德海艾科能源科技有限公司 | A kind of flow battery electrode frame of multi-cavity structure and its battery stack of composition |
-
2012
- 2012-03-14 CN CN2012200957724U patent/CN202474107U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593491A (en) * | 2012-03-14 | 2012-07-18 | 中国东方电气集团有限公司 | Liquid flow cell stack and cell system comprising same |
| CN109786783A (en) * | 2019-01-26 | 2019-05-21 | 杭州德海艾科能源科技有限公司 | A kind of flow battery electrode frame of multi-cavity structure and its battery stack of composition |
| CN109786783B (en) * | 2019-01-26 | 2023-04-25 | 杭州德海艾科能源科技有限公司 | Electrode frame for flow battery with multi-cavity structure and battery stack formed by electrode frame |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180601 Address after: 611731 18 West core road, hi-tech West District, Chengdu, Sichuan Patentee after: Dongfang Electric Co., Ltd. Address before: 611731 Dongfang Electrical Research Institute, 18 West core road, hi-tech West District, Chengdu, Sichuan Patentee before: Dongfang Electric Corporation |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190322 Address after: 610097 No. 18 Xixin Avenue, Chengdu High-tech Zone, Sichuan Province Patentee after: Dongfang Electric (Chengdu) Hydrogen Fuel Cell Technology Co., Ltd. Address before: 611731 18 West core road, hi-tech West District, Chengdu, Sichuan Patentee before: Dongfang Electric Co., Ltd. |
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| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |
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| CX01 | Expiry of patent term |