CN101807705A - Microfluidic liquid flow energy-storage single cell and cell stack - Google Patents
Microfluidic liquid flow energy-storage single cell and cell stack Download PDFInfo
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- CN101807705A CN101807705A CN201010140898A CN201010140898A CN101807705A CN 101807705 A CN101807705 A CN 101807705A CN 201010140898 A CN201010140898 A CN 201010140898A CN 201010140898 A CN201010140898 A CN 201010140898A CN 101807705 A CN101807705 A CN 101807705A
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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
- Y02E60/10—Energy storage using batteries
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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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Abstract
The invention discloses a microfluidic liquid flow energy-storage single cell and a cell stack. The single cell comprises a single cell electrode, an anode electrolyte, a cathode electrolyte, a single cell upper capping layer, a single cell upper liner layer, a single cell flow path layer, a single cell lower liner layer and a single cell lower capping layer; the single cell upper capping layer, the single cell upper liner layer, the single cell flow path layer, the single cell lower liner layer and the single cell lower capping layer are adhered into a whole in sequence; four corners of the single cell are provided with a single cell anode electrolyte inlet, a single cell cathode electrolyte inlet, a single cell anode electrolyte outlet and a single cell cathode electrolyte outlet; a single cell microfluidic path of the single cell is provided with a single cell electrode; the single cell microfluidic path is communicated with the single cell anode electrolyte inlet, the single cell cathode electrolyte inlet, the single cell anode electrolyte outlet and the single cell cathode electrolyte outlet; and the anode electrolyte and the cathode electrolyte are filled in the single cell microfluidic path. The invention provides a cell stack formed by connecting the single cells in series, in parallel, or in series and parallel.
Description
Technical field
The present invention relates to a kind of energy-storage battery, more particularly, it relates to a kind of liquid flow energy storage battery with micro-fluidic structure, and it not only relates to a kind of monocell but also relates to the battery pile of being made up of monocell.
Background technology
Liquid flow energy storage battery has energy conversion efficiency height, long service life, capacity can require advantages such as conciliation, environmental protection, safety according to optimization, is regenerative resource and electric energy peak clippings such as wind energy, solar energy, fills out one of the most promising method of scale energy storage such as paddy.
Yet still there are some technical problems in liquid flow energy storage battery at present, and for example, the current density of battery operation is low.At present, the working current density of liquid flow energy storage battery operation lower (＜100mA/cm2), be 1/10th of Proton Exchange Membrane Fuel Cells working current density only, cause the battery module volume big, the materials demand amount is big, cost is climbed to a higher point.This main and electric activity and ionic conductivity of conductivity, amberplex to reactivity, electrode pad material is relevant with electrolyte mass transfer ability.In addition, the inhomogeneities that electrolyte distributes in the scale amplification process of battery is all the more serious, and interior leakage current loses increase etc. in the common-use tunnel.This all can cause the reduction of battery performance, thereby working current density is on the low side.
In addition, the battery system cost is higher.Also the be unrealized mass preparation of liquid flow energy storage battery critical material and parts, therefore production cost is higher at present.Especially domestic ion-exchange membrane technology is not also broken through, and the business-like Nafion film of normally used E.I.Du Pont Company costs an arm and a leg, and becomes the bottleneck of restriction liquid flow energy storage battery practicability.
Summary of the invention
Technical problem to be solved by this invention be overcome working current density that prior art exists on the low side with production cost than problems such as height, a kind of liquid energy-storage monocell of microflow control technique and battery pile of being made up of the liquid energy-storage monocell that adopts microflow control technique of adopting is provided.
For solving the problems of the technologies described above, the present invention adopts following technical scheme to realize: described monocell mainly is made up of capping layer under laying, monocell runner layer, monocell lower liner layer and the monocell on single-cell electrodes, anodal electrolyte, negative pole electrolyte, monocell upper cover layer, the monocell.
On described monocell upper cover layer, the monocell under laying, monocell runner layer, monocell lower liner layer and the monocell capping layer be all rectangular plate structure spare, they compress bonding connection successively and are integral.
The Si Jiaochu of described monocell is provided with the anodal electrolyte entrance of the identical monocell in aperture, monocell negative pole electrolyte entrance, the anodal electrolyte outlet of monocell and monocell negative pole electrolyte outlet.Monocell runner layer is provided with the monocell fluid channel, be provided with single-cell electrodes in the monocell fluid channel, the anodal electrolyte entrance of one end of monocell fluid channel and monocell is communicated with monocell negative pole electrolyte entrance, and the anodal electrolyte outlet of the other end of monocell fluid channel and monocell is communicated with monocell negative pole electrolyte outlet.Anodal electrolyte and negative pole electrolyte are full of the monocell fluid channel by the anodal electrolyte entrance of monocell, monocell negative pole electrolyte entrance, the anodal electrolyte outlet of monocell and monocell negative pole electrolyte outlet.
Monocell fluid channel described in the technical scheme is double-Y shaped, the monocell fluid channel is arranged on the monocell runner layer symmetrically with the lateral symmetry line of monocell runner layer, and the monocell fluid channel is made up of straight channel that is in monocell fluid channel middle part and the auxiliary flow that is fork-shaped that is in monocell fluid channel two ends.Straight channel is communicated with the auxiliary flow that is fork-shaped in the monocell fluid channel, the anodal electrolyte entrance of the auxiliary flow that is fork-shaped of monocell fluid channel one end and the monocell on the monocell is communicated with monocell negative pole electrolyte entrance, and the anodal electrolyte outlet of the auxiliary flow that is fork-shaped of the monocell fluid channel other end and the monocell on the monocell is communicated with monocell negative pole electrolyte outlet; The straight channel of described monocell fluid channel is long to be 15-20mm, and wide is 1-2mm, and thickness is 0.2-1mm.Single-cell electrodes respectively is equipped with in straight channel both sides in the monocell fluid channel;
A kind of battery pile that adopts the microfluidic liquid flow energy-storage monocell to form.Described battery pile mainly is made up of capping layer under single-cell electrodes, anodal electrolyte, negative pole electrolyte, battery pile upper cover layer, battery pile first laying, battery pile first flow layer, battery pile second laying, the battery pile second runner layer and the battery pile.
Capping layer is all rectangular plate structure spare under described battery pile upper cover layer, battery pile first laying, battery pile first flow layer, battery pile second laying, the battery pile second runner layer and the battery pile, and they compress bonding connection successively and are integral.
The middle part of described battery pile is provided with the anodal electrolyte entrance of battery pile, battery pile negative pole electrolyte entrance, the anodal electrolyte outlet of battery pile and battery pile negative pole electrolyte outlet.Be set up in parallel 4 described monocell fluid channel on the battery pile second runner layer, single-cell electrodes in the monocell fluid channel realizes series connection, and 4 described monocell fluid channel are communicated with battery pile negative pole electrolyte outlet with the anodal electrolyte entrance of the battery pile of battery pile upper cover layer and battery pile, battery pile negative pole electrolyte entrance, the anodal electrolyte outlet of battery pile by battery pile second laying, battery pile first flow layer, battery pile first laying.
On the battery pile second runner layer described in the technical scheme 4 described monocell fluid channel are set not only, and 2 to n described monocell fluid channel are set, wherein n gets the natural number greater than zero.Single-cell electrodes in the monocell fluid channel is taked series, parallel or connection in series-parallel, and the anodal electrolyte entrance of battery pile of 2 to n individual described monocell fluid channel and battery pile, battery pile negative pole electrolyte entrance, the anodal electrolyte outlet of battery pile are communicated with battery pile negative pole electrolyte outlet; Described battery pile upper cover layer is rectangular plate structure spare, and adopting the thick material of 2mm is the hard material making of Merlon, polyethylene or polymethyl methacrylate.The middle part of battery pile upper cover layer is provided with the anodal electrolyte entrance of battery pile, battery pile negative pole electrolyte entrance, the anodal electrolyte outlet of battery pile and battery pile negative pole electrolyte outlet, and the diameter of the anodal electrolyte entrance of battery pile, battery pile negative pole electrolyte entrance, the anodal electrolyte outlet of battery pile and battery pile negative pole electrolyte outlet is all 6mm.The line of the axis of symmetry of the anodal electrolyte entrance of battery pile, battery pile negative pole electrolyte entrance, the anodal electrolyte outlet of battery pile and battery pile negative pole electrolyte outlet is a parallelogram; Described battery pile first laying is and the measure-alike rectangular plate structure spare of battery pile upper cover layer, and adopting material is the material of PDMS, and its thickness is 1-10mm.The middle part of battery pile first laying 21 be provided with battery pile upper cover layer on the anodal electrolyte outlet of the anodal electrolyte entrance of battery pile, battery pile negative pole electrolyte entrance, battery pile and the anodal electrolyte entrance of the corresponding first measure-alike laying in battery pile negative pole electrolyte exit position, the first laying negative pole electrolyte entrance, first laying positive pole electrolyte outlet and the first laying negative pole electrolyte outlet; Described battery pile first flow layer is and the measure-alike rectangular plate structure spare of battery pile upper cover layer that adopting material is the material of PDMS.The middle part of battery pile first flow layer be provided with battery pile upper cover layer on the anodal electrolyte outlet of the anodal electrolyte entrance of battery pile, battery pile negative pole electrolyte entrance, battery pile and the anodal electrolyte entrance of the corresponding measure-alike first flow layer in battery pile negative pole electrolyte exit position, first flow layer negative pole electrolyte entrance, first flow layer positive pole electrolyte outlet and first flow layer negative pole electrolyte outlet.Be that the center outwards is provided with four straight channel with the anodal electrolyte entrance of first flow layer, first flow layer negative pole electrolyte entrance, the anodal electrolyte outlet of first flow layer and first flow layer negative pole electrolyte outlet respectively again, four straight channel that the anodal electrolyte entrance of first flow layer and first flow layer negative pole electrolyte entrance outwards are provided with respectively concentrate on the first half of battery pile first flow layer (22), and the anodal electrolyte entrance of first flow layer and first flow layer negative pole electrolyte entrance respectively outwards four straight channel of setting be alternate layout.Four straight channel that the anodal electrolyte outlet of first flow layer and first flow layer negative pole electrolyte outlet outwards are provided with respectively concentrate on the latter half of battery pile first flow layer (22), and the anodal electrolyte outlet of first flow layer and first flow layer negative pole electrolyte outlet respectively outwards four straight channel of setting be alternate layout.Article 16, the end branch of straight channel is on two straight lines and divides the both sides up and down that are listed in battery pile first flow layer; Described battery pile second laying is and the measure-alike rectangular plate structure spare of battery pile first flow layer that adopting material is the material of PDMS.Battery pile second laying is provided with 16 holes of two rows, on inlet that to arrange 8 holes be anodal electrolyte and negative pole electrolyte, anodal electrolyte and negative pole electrolyte entrance are alternate layouts.The outlet that to arrange 8 holes down be anodal electrolyte and negative pole electrolyte, the outlet of anodal electrolyte and negative pole electrolyte is alternate layout.Straight channel on the position in 16 holes and the battery pile first flow layer terminal corresponding.
Compared with prior art the invention has the beneficial effects as follows:
1. microfluidic liquid flow energy-storage monocell of the present invention and battery pile are used for microflow control technique the design and processing of liquid flow energy storage battery;
2. microfluidic liquid flow energy-storage monocell of the present invention and battery pile need not amberplex owing to adopt microflow control technique, reduce the cost of manufacture of liquid flow energy storage battery greatly, improve liquid flow energy storage battery stability and useful life;
3. there is not exchange membrane to intercept in microfluidic liquid flow energy-storage monocell of the present invention and the battery pile between positive and negative electrolyte but directly contact, improved ion-exchange speed, thereby accelerate the speed that discharges and recharges of liquid flow energy storage battery, the current density when improving the liquid flow energy storage battery discharge.
4. microfluidic liquid flow energy-storage monocell of the present invention and battery pile are easy to processing and fabricating, and be with low cost.
Description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing:
Fig. 1-a is the axonometric projection schematic diagram of monocell upper cover layer structure in the liquid energy-storage monocell of employing microflow control technique of the present invention;
Fig. 1-b is the axonometric projection schematic diagram of laying structure on the monocell in the liquid energy-storage monocell of employing microflow control technique of the present invention;
Fig. 1-c is the axonometric projection schematic diagram of monocell runner layer structure in the liquid energy-storage monocell of employing microflow control technique of the present invention;
Fig. 1-d is the axonometric projection schematic diagram of monocell lower liner layer structure in the liquid energy-storage monocell of employing microflow control technique of the present invention;
Fig. 1-e is the axonometric projection schematic diagram of monocell lower seal cover rocks in the liquid energy-storage monocell of employing microflow control technique of the present invention;
Fig. 2-a is the axonometric projection schematic diagram of battery pile upper cover layer structure in the redox flow battery pile of employing microflow control technique of the present invention;
Fig. 2-b is the axonometric projection schematic diagram of the battery pile first laying structure in the redox flow battery pile of employing microflow control technique of the present invention;
Fig. 2-c is the axonometric projection schematic diagram of battery pile first flow layer structure in the redox flow battery pile of employing microflow control technique of the present invention;
Fig. 2-d is the axonometric projection schematic diagram of the battery pile second laying structure in the redox flow battery pile of employing microflow control technique of the present invention;
Fig. 2-e is the axonometric projection schematic diagram of the battery pile second runner layer structure in the redox flow battery pile of employing microflow control technique of the present invention;
Fig. 2-f is the axonometric projection schematic diagram of battery pile lower seal cover rocks in the redox flow battery pile of employing microflow control technique of the present invention;
Fig. 3 is the full sectional view that the liquid energy-storage single-cell structure of employing microflow control technique of the present invention is formed;
Fig. 4 is a structural representation of being implemented the battery pile that series connection formed by the liquid energy-storage monocell that adopts microflow control technique of the present invention;
Fig. 5 is a structural representation of being implemented the battery pile that connection in series-parallel forms by the liquid energy-storage monocell that adopts microflow control technique of the present invention;
Among the figure: 1. the anodal electrolyte entrance of monocell, 2. monocell negative pole electrolyte entrance, the 3. anodal electrolyte outlet of monocell, 4. monocell negative pole electrolyte outlet, 5. monocell fluid channel, 6. single-cell electrodes, 7. anodal electrolyte, 8. negative pole electrolyte, 9. monocell upper cover layer, 10. laying on the monocell, 11. monocell runner layers, 12. monocell lower liner layer, 13. capping layer under the monocell, 14. monocells, 15. battery pile, 16. the anodal electrolyte entrance of battery pile, 17. battery pile negative pole electrolyte entrance, the anodal electrolyte outlet of 18. battery pile, 19. battery pile negative pole electrolyte outlets, 20. battery pile upper cover layer, 21. battery pile first laying, 22. battery pile first flow layers, 23. battery pile, second laying, 24. the battery pile second runner layer, capping layer under 25. battery pile.
Embodiment
Below in conjunction with accompanying drawing the present invention is explained in detail:
The object of the present invention is to provide a kind of liquid energy-storage monocell of microflow control technique and battery pile of forming by this monocell of adopting.Utilize fluid channel to realize the Laminar Flow of anodal electrolyte 7 and negative pole electrolyte 8, anodal electrolyte 7 is separated also without amberplex with negative pole electrolyte 8 can not mixed, and after reaction, realize separating of anodal electrolyte 7 and negative pole electrolyte 8, and then improve liquid energy-storage monocell working current density, reduce the cost of liquid energy-storage monocell.
Consult Fig. 1, the liquid energy-storage monocell that adopts microflow control technique is to utilize a plurality of fluids characteristic that meeting is flowed with the laminar flow form in the minute yardstick runner, adopt the reaction warehouse of minute yardstick runner, prevent mixing of anodal electrolyte 7 and negative pole electrolyte 8 without amberplex as the liquid energy-storage monocell.Adopt the liquid energy-storage monocell 14 of microflow control technique mainly to form by capping layer 13 under laying 10, monocell runner layer 11, monocell lower liner layer 12 and the monocell on single-cell electrodes 6, anodal electrolyte 7, negative pole electrolyte 8, monocell upper cover layer 9, the monocell.
Consult Fig. 1-a, described monocell upper cover layer 9 is rectangular plate structure spares, adopting the thick material of 2mm is the hard material making (also can adopt polyethylene, polymethyl methacrylate) of Merlon, and the Si Jiaochu of monocell upper cover layer 9 is provided with the anodal electrolyte entrance 1 of the identical monocell in aperture, monocell negative pole electrolyte entrance 2, anodal electrolyte outlet 3 of monocell and monocell negative pole electrolyte outlet 4.The line of axis, adjacent two hole is parallel and equal with the line of axis, two hole, opposite, two adjacent lines intersect vertically, and the anodal electrolyte entrance 1 of monocell, monocell negative pole electrolyte entrance 2, the monocell negative pole electrolyte outlet 4 that promptly are arranged on 9 four jiaos of place of monocell upper cover layer are a rectangle with the anodal electrolyte outlet 3 of monocell line successively.
Consult Fig. 1-b and Fig. 1-d, on the described monocell laying 10 and monocell lower liner layer 12 be the same with monocell upper cover layer 9 be measure-alike rectangular plate structure spare, adopting material is the material of PDMS, its thickness is 1-10mm.Wherein the Si Jiaochu of laying 10 is provided with the anodal electrolyte entrance 1 of the monocell that is provided with four jiaos of monocell upper cover layer 9 places, monocell negative pole electrolyte entrance 2, the anodal electrolyte outlet 3 of monocell and monocell negative pole electrolyte outlet 4 and correspondingly goes up the anodal electrolyte entrances of layings, goes up laying negative pole electrolyte entrance, goes up anodal electrolyte outlet of laying and last laying negative pole electrolyte outlet on the monocell.
Consult Fig. 1-e, under the described monocell capping layer 13 be the same with monocell upper cover layer 9 be measure-alike rectangular plate structure spare, adopting the thick material of 2mm is that the hard material of Merlon is made (also can adopt polyethylene, polymethyl methacrylate).
Consult Fig. 1-c, be carved with double-Y shaped monocell fluid channel 5 on the described monocell runner layer 11, double-Y shaped monocell fluid channel 5 is symmetrical arranged (fork-shaped is outside) with the lateral symmetry line on monocell runner layer 11.Double-Y shaped monocell fluid channel 5 is made up of straight channel (reaction warehouse) that is in runner middle part and the auxiliary flow that is fork-shaped that is in the runner two ends.Described auxiliary flow is the anodal electrolyte of monocell and goes into that runner, monocell negative pole electrolyte are gone into runner, the anodal electrolyte of monocell goes out runner and monocell negative pole electrolyte goes out runner.The straight channel of monocell fluid channel 5 is long to be 15-20mm, and wide is 1-2mm, and thickness is 0.2-1mm; It is the single-cell electrodes 6 of graphite that straight channel both sides dresses (subsides) in the monocell fluid channel 5 have material, the single-cell electrodes 6 that straight channel left side dress (subsides) in the monocell fluid channel 5 has contacts with anodal electrolyte 7, and the single-cell electrodes 6 that the straight channel right side dress (subsides) in the monocell fluid channel 5 has contacts with negative pole electrolyte 8.The two ends of the straight channel in the monocell fluid channel 5 are communicated with the auxiliary flow that is fork-shaped respectively, be that the end of straight channel of monocell fluid channel 5 and the anodal electrolyte of monocell are gone into runner and gone into runner with monocell negative pole electrolyte and be communicated with, the other end of the straight channel of monocell fluid channel 5 and monocell positive pole electrolyte go out runner and go out runner with monocell negative pole electrolyte and be communicated with.The anodal electrolyte of monocell go into runner and monocell negative pole electrolyte go into runner by laying on the monocell 10 respectively with monocell upper cover layer 9 on the anodal electrolyte entrance 1 of monocell be communicated with monocell negative pole electrolyte entrance 2, monocell positive pole electrolyte go out runner and monocell negative pole electrolyte go out runner by laying on the monocell 10 respectively with monocell upper cover layer 9 on monocell positive pole electrolyte outlet 3 be communicated with monocell negative pole electrolyte outlet 4.On the monocell upper cover layer 9 that monocell runner layer 11 is in monocell runner layer 11 top and the monocell under laying 10 and the monocell lower liner layer 12 that is in monocell runner layer 11 below and the monocell capping layer 13 compress successively and be bonded into one.
During monocell 14 work, anodal electrolyte 7 and negative pole electrolyte 8 pass in the monocell fluid channel 5 of laying 10 inflow monocell runner layers 11 on monocell upper cover layer 9 and the monocell by anodal electrolyte entrance 1 of monocell and monocell negative pole electrolyte entrance 2 respectively, anodal electrolyte 7 and negative pole electrolyte 8 flow through the monocell fluid channel 5 that has single-cell electrodes 6 (in straight channel) with the laminar flow form, anodal electrolyte 7 directly contacts with negative pole electrolyte 8, but do not mix, last anodal electrolyte 7 and negative pole electrolyte 8 are separated, flow out monocell 14 by anodal electrolyte outlet 3 of monocell and monocell negative pole electrolyte outlet 4.
The material that the monocell upper cover layer 9 of monocell 14 adopts is a Merlon, concrete dimensional parameters is as follows: length * wide * thick=50 * 30 * 2mm, the diameter of the anodal electrolyte entrance 1 of monocell, monocell negative pole electrolyte entrance 2, the anodal electrolyte outlet 3 of monocell and monocell negative pole electrolyte outlet 4 is 4mm.
The material that laying 10 adopts on the monocell of monocell 14 is PDMS, concrete dimensional parameters is as follows: length * wide * thick=50 * 30 * 5mm, on the monocell 10 4 jiaos of layings place be provided with monocell upper cover layer 9 on the anodal electrolyte entrance 1 of monocell, monocell negative pole electrolyte entrance 2, identical last laying positive pole electrolyte entrance on the corresponding size on the anodal electrolyte outlet 3 of monocell and monocell negative pole electrolyte outlet 4 positions, last laying negative pole electrolyte entrance, anodal electrolyte outlet of last laying and last laying negative pole electrolyte outlet, the diameter of four inlet/outlets is all 4mm.
The material that the monocell lower liner layer 12 of monocell 14 adopts is PDMS, and concrete dimensional parameters is as follows: length * wide * thick=50 * 30 * 5mm,
The material that the monocell runner layer 11 of monocell 14 adopts is PDMS, and concrete dimensional parameters is as follows: length * wide * thick=50 * 30 * 0.5mm, and the straight channel of monocell fluid channel 5 is long to be 20mm, wide is 1.5mm.
The material that capping layer 13 adopts under the monocell of monocell 14 is a Merlon, and concrete dimensional parameters is as follows: length * wide * thick=50 * 30 * 2mm.
Consult Fig. 4, the liquid energy-storage monocell 14 of a plurality of employing microflow control techniques is produced on the micro-fluidic chip in mode in parallel or series connection, constitute the redox flow battery pile 15 that adopts microflow control technique.Reach the increase cell output voltage by the liquid energy-storage monocell 14 of a plurality of employing microflow control techniques is implemented series connection, reach increase battery output current by the liquid energy-storage monocell 14 of a plurality of employing microflow control techniques is implemented parallel connection.
Consult Fig. 2, shown in the figure is to adopt the liquid energy-storage monocell 14 of microflow control technique to implement the series connected battery heap with 4.Implement the series connected battery heap and adopt dual channel layer structure, assemble successively by capping layer 25 under battery pile upper cover layer 20, battery pile first laying 21, battery pile first flow layer 22, battery pile second laying 23, the battery pile second runner layer 24 and the battery pile.
Consult Fig. 2-a, the battery pile upper cover layer 20 of described battery pile 15 is rectangular plate structure spares, adopting the thick material of 2mm is the hard material making (also can adopt polyethylene, polymethyl methacrylate) of Merlon, the middle part of battery pile upper cover layer 20 is provided with the anodal electrolyte entrance 16 of battery pile, battery pile negative pole electrolyte entrance 17, anodal electrolyte outlet 18 of battery pile and battery pile negative pole electrolyte outlet 19, the diameter of four inlet/outlets is identical, and the line of the axis of symmetry of four inlet/outlets is a parallelogram.
Consult Fig. 2-b, battery pile first laying 21 of described battery pile 15 is rectangular plate structure spares measure-alike with battery pile upper cover layer 20, and adopting material is the material of PDMS, and its thickness is 1-10mm.The middle part of battery pile first laying 21 be provided with battery pile upper cover layer 20 on the anodal electrolyte outlet 18 of anodal electrolyte entrance 16, battery pile negative pole electrolyte entrance 17, battery pile and battery pile negative pole electrolyte outlet 19 positions on the identical anodal electrolyte entrance of first laying, the first laying negative pole electrolyte entrance, first laying positive pole electrolyte outlet and the first laying negative pole electrolyte outlet on the corresponding size.
Consult Fig. 2-c, the battery pile first flow layer 22 of described battery pile 15 is rectangular plate structure spares measure-alike with battery pile upper cover layer 20, and adopting material is the material of PDMS.The middle part of battery pile first flow layer 22 be provided with battery pile upper cover layer 20 on the anodal electrolyte outlet 18 of the anodal electrolyte entrance 16 of battery pile, battery pile negative pole electrolyte entrance 17, battery pile and battery pile negative pole electrolyte outlet 19 positions on the identical anodal electrolyte entrance of first flow layer, first flow layer negative pole electrolyte entrance, first flow layer positive pole electrolyte outlet and first flow layer negative pole electrolyte outlet on the corresponding size, the diameter of four inlet/outlets is all 6mm.Be that the center outwards is provided with four straight channel with the anodal electrolyte entrance of first flow layer, first flow layer negative pole electrolyte entrance, the anodal electrolyte outlet of first flow layer and first flow layer negative pole electrolyte outlet respectively again.Four straight channel that anodal electrolyte entrance of first flow layer and first flow layer negative pole electrolyte entrance outwards are provided with respectively concentrate on the first half of battery pile first flow layer 22, and four straight channel that anodal electrolyte entrance of first flow layer and first flow layer negative pole electrolyte entrance outwards are provided with respectively are alternate layouts, four straight channel that the anodal electrolyte outlet of first flow layer and first flow layer negative pole electrolyte outlet outwards are provided with respectively concentrate on the latter half of battery pile first flow layer 22, and the anodal electrolyte outlet of first flow layer and first flow layer negative pole electrolyte outlet respectively outwards four straight channel of setting be alternate layout.Not connected between each straight channel is alternate layout, and the end branch of each (16) straight channel is on two straight lines and divides the both sides up and down that are listed in battery pile first flow layer 22.
Consult Fig. 2-d, battery pile second laying 23 of described battery pile 15 is rectangular plate structure spares measure-alike with battery pile first flow layer 22, and adopting material is the material of PDMS.Battery pile second laying 23 is provided with two rows, 16 holes, last row 8 holes are inlets of anodal electrolyte 7 and negative pole electrolyte 8, anodal electrolyte 7 and negative pole electrolyte 8 inlets are alternate layouts, arranging 8 holes down is outlets of anodal electrolyte 7 and negative pole electrolyte 8, the outlet of anodal electrolyte 7 and negative pole electrolyte 8 is alternate layouts, 16 straight channel on the position in 16 holes and the battery pile first flow layer 22 terminal corresponding.
Consult Fig. 2-e, the battery pile second runner layer 24 of described battery pile 15 is rectangular plate structure spares measure-alike with battery pile first flow layer 22, and adopting material is the material of PDMS.Be carved with 4 described monocells 14 on the battery pile second layer runner layer 24.The single-cell electrodes 6 end to end realization series connection of 4 described monocells 14, straight channel in the monocell fluid channel 5 in each group monocell 14 is long to be 20mm, wide is 1.5mm, the auxiliary flow that is fork-shaped in the monocell fluid channel 5 of each group in monocell 14 terminal with battery pile first flow layer 22 on straight channel terminal corresponding, promptly corresponding with two rounds that are provided with on second laying 23, last round is realized the anodal electrolyte 7 of each group monocell 14 and the input of negative pole electrolyte 8, and following round is realized the anodal electrolyte 7 of each group monocell 14 and the outflow of negative pole electrolyte 8.On the battery pile second runner layer 24 4 described monocell fluid channel 5 can be set not only theoretically, 2 to n described monocell fluid channel 5 also can be set, wherein n gets the natural number greater than zero.Single-cell electrodes 6 in each monocell fluid channel 5 realizes series, parallel or connection in series-parallel.The anodal electrolyte entrance 16 of battery pile of 2 to n individual described monocell fluid channel 5 and battery pile 15, battery pile negative pole electrolyte entrance 17, the anodal electrolyte outlet 18 of battery pile are communicated with battery pile negative pole electrolyte outlet 19.But from practical application, consider the electric current of actual needs, the size of voltage, consider the convenience of use, processing and maintenance, the maximum of n is not unlimited but limited.The voltage that is produced according to each monocell 14 is about 1.26v, and current density is 200mA/cm
2About, consider use, processing and the convenience of keeping in repair again, just can calculate the number that needs to be provided with described monocell fluid channel 5 on the battery pile second runner layer 24.
Consult Fig. 2-f, capping layer 25 is and the measure-alike rectangular plate structure spare of the battery pile second runner layer 24 under the battery pile of described battery pile 15, and the material of employing is a Merlon.
During battery pile work, anodal electrolyte 7 and negative pole electrolyte 8 pass battery pile upper cover layer 20 by anodal electrolyte entrance 16 of battery pile and battery pile negative pole electrolyte entrance 17 respectively and battery pile first laying 21 flows in the battery pile first flow layer 22, be carved with branch's runner at this layer, after being divided into 4 the tunnel respectively, anodal electrolyte 7 and negative pole electrolyte 8 enters battery pile second layer runner layer 24, be carved with 4 groups of monocells 14 on the battery pile second layer runner layer 24, the single-cell electrodes 6 end to end realization series connection of 4 groups of monocells 14, return battery pile first flow layer 22 after anodal electrolyte 7 and negative pole electrolyte 8 flow through in 4 groups of described monocell fluid channel 5, flow out battery pile 15 at last.
Embodiment 2
The material that the battery pile upper cover layer 20 of battery pile 15 adopts is a Merlon, and concrete dimensional parameters is as follows: length * wide * thick=200 * 100 * 2mm, the diameter of four inlet/outlets is all 6mm.
The material that battery pile first laying 21 of battery pile 15 adopts is PDMS, and concrete dimensional parameters is as follows: length * wide * thick=200 * 100 * 5mm, the diameter of four inlet/outlets is all 6mm.
The material that the battery pile first flow layer 22 of battery pile 15 adopts is PDMS, concrete dimensional parameters is as follows: length * wide * thick=200 * 100 * 0.5mm, the diameter of the anodal electrolyte entrance of the first flow layer that battery pile first flow layer 22 middle part are provided with, first flow layer negative pole electrolyte entrance, the anodal electrolyte outlet of first flow layer and first flow layer negative pole electrolyte outlet is all 6mm.With the anodal electrolyte entrance of first flow layer, first flow layer negative pole electrolyte entrance, the anodal electrolyte outlet of first flow layer and first flow layer negative pole electrolyte outlet is that four straight channel width that the center outwards is provided with are 4mm.
The material that battery pile second laying 23 of battery pile 15 adopts is PDMS, and concrete dimensional parameters is as follows: length * wide * thick=200 * 100 * 5mm, the diameter of two rounds that are provided with on battery pile second laying 23 is all 4mm.
The material that the battery pile second layer runner layer 24 of battery pile 15 adopts is PDMS, and concrete dimensional parameters is as follows: length * wide * thick=200 * 100 * 0.5mm.Be carved with 4 groups of monocells 14 on the battery pile second layer runner layer 24 in the present embodiment, the straight channel in the monocell fluid channel 5 in each group monocell 14 is long to be 20mm, and wide is 1.5mm.
The material that capping layer 25 adopts under the battery pile of battery pile 15 is a Merlon, and concrete dimensional parameters is as follows: length * wide * thick=200 * 100 * 2mm.
The liquid energy-storage monocell 14 of described employing microflow control technique can be applicable on the different flow batteries, for example: full vanadium system, vanadium/bromine system and zinc/bromine system.
The present invention introduces new energy field with microflow control technique, is applied to novel liquid flow energy storage battery.Because microfluidic liquid flow energy-storage battery structure of the present invention is simple, need not expensive amberplex, and battery material and processing and manufacturing expense are lower, therefore greatly reduce manufacturing cost.In addition, because inside battery both positive and negative polarity electrolyte directly contacts, both positive and negative polarity ionic conduction speed is very fast, and the electrolyte flow form is laminar flow, and concentration of electrolyte changes evenly, so monocell 14 working current density are higher.
Claims (9)
1. microfluidic liquid flow energy-storage monocell, it is characterized in that described monocell (14) mainly is made up of capping layer (13) under laying (10), monocell runner layer (11), monocell lower liner layer (12) and the monocell on single-cell electrodes (6), anodal electrolyte (7), negative pole electrolyte (8), monocell upper cover layer (9), the monocell;
On described monocell upper cover layer (9), the monocell under laying (10), monocell runner layer (11), monocell lower liner layer (12) and the monocell capping layer (13) be all rectangular plate structure spare, they compress bonding connection successively and are integral;
The Si Jiaochu of described monocell (14) is provided with the anodal electrolyte entrance (1) of the identical monocell in aperture, monocell negative pole electrolyte entrance (2), anodal electrolyte outlet of monocell (3) and monocell negative pole electrolyte outlet (4), monocell runner layer (11) is provided with monocell fluid channel (5), be provided with single-cell electrodes (6) in the monocell fluid channel (5), the anodal electrolyte entrance of one end of monocell fluid channel (5) and monocell (1) is communicated with monocell negative pole electrolyte entrance (2), the anodal electrolyte outlet of the other end of monocell fluid channel (5) and monocell (3) is communicated with monocell negative pole electrolyte outlet (4), and anodal electrolyte (7) passes through the anodal electrolyte entrance (1) of monocell with negative pole electrolyte (8), monocell negative pole electrolyte entrance (2), the anodal electrolyte outlet of monocell (3) is full of monocell fluid channel (5) with monocell negative pole electrolyte outlet (4).
2. according to the described microfluidic liquid flow energy-storage monocell of claim 1, it is characterized in that, described monocell fluid channel (5) is double-Y shaped, monocell fluid channel (5) is arranged on the monocell runner layer (11) symmetrically with the lateral symmetry line of monocell runner layer (11), and monocell fluid channel (5) is made up of straight channel that is in monocell fluid channel (5) middle part and the auxiliary flow that is fork-shaped that is in monocell fluid channel (5) two ends; Straight channel is communicated with the auxiliary flow that is fork-shaped in the monocell fluid channel (5), the anodal electrolyte entrance of the auxiliary flow that is fork-shaped of monocell fluid channel (5) one ends and the monocell on the monocell (14) (1) is communicated with monocell negative pole electrolyte entrance (2), and the anodal electrolyte outlet of the auxiliary flow that is fork-shaped of monocell fluid channel (5) other end and the monocell on the monocell (14) (3) is communicated with monocell negative pole electrolyte outlet (4).
3. according to the described microfluidic liquid flow energy-storage monocell of claim 2, it is characterized in that the straight channel of described monocell fluid channel (5) is long to be 15-20mm, wide is 1-2mm, and thickness is 0.2-1mm; Single-cell electrodes (6) respectively is equipped with in straight channel both sides in the monocell fluid channel (5).
4. battery pile that adopts the described microfluidic liquid flow energy-storage monocell of claim 1 to form, it is characterized in that described battery pile (15) mainly is made up of capping layer (25) under single-cell electrodes (6), anodal electrolyte (7), negative pole electrolyte (8), battery pile upper cover layer (20), battery pile first laying (21), battery pile first flow layer (22), battery pile second laying (23), the battery pile second runner layer (24) and the battery pile;
Capping layer (25) is all rectangular plate structure spare under described battery pile upper cover layer (20), battery pile first laying (21), battery pile first flow layer (22), battery pile second laying (23), the battery pile second runner layer (24) and the battery pile, and they compress bonding connection successively and are integral;
The middle part of described battery pile (15) is provided with the anodal electrolyte entrance (16) of battery pile, battery pile negative pole electrolyte entrance (17), anodal electrolyte outlet of battery pile (18) and battery pile negative pole electrolyte outlet (19), be set up in parallel 4 described monocell fluid channel (5) on the battery pile second runner layer (24), single-cell electrodes (6) in the monocell fluid channel (5) realizes series connection, and 4 described monocell fluid channel (5) are by battery pile second laying (23), battery pile first flow layer (22), battery pile first laying (21) and the anodal electrolyte entrance (16) of the battery pile of battery pile upper cover layer (20) and battery pile (15), battery pile negative pole electrolyte entrance (17), the anodal electrolyte outlet of battery pile (18) is communicated with battery pile negative pole electrolyte outlet (19).
5. according to the described battery pile of claim 4, it is characterized in that, on the described battery pile second runner layer (24) 4 described monocell fluid channel (5) are set not only, and 2 to n described monocell fluid channel (5) are set, wherein n gets the natural number greater than zero, single-cell electrodes (6) in the monocell fluid channel (5) is taked series connection, parallel connection or connection in series-parallel, the anodal electrolyte entrance (16) of battery pile of 2 to n individual described monocell fluid channel (5) and battery pile (15), battery pile negative pole electrolyte entrance (17), the anodal electrolyte outlet of battery pile (18) is communicated with battery pile negative pole electrolyte outlet (19).
6. according to the described battery pile of claim 4, it is characterized in that, described battery pile upper cover layer (20) is rectangular plate structure spare, adopting the thick material of 2mm is Merlon, the hard material of polyethylene or polymethyl methacrylate is made, the middle part of battery pile upper cover layer (20) is provided with the anodal electrolyte entrance (16) of battery pile, battery pile negative pole electrolyte entrance (17), anodal electrolyte outlet of battery pile (18) and battery pile negative pole electrolyte outlet (19), the anodal electrolyte entrance (16) of battery pile, battery pile negative pole electrolyte entrance (17), the anodal electrolyte outlet of battery pile (18) is all 6mm with the diameter of battery pile negative pole electrolyte outlet (19), the anodal electrolyte entrance (16) of battery pile, battery pile negative pole electrolyte entrance (17), the anodal electrolyte outlet of battery pile (18) is a parallelogram with the line of the axis of symmetry of battery pile negative pole electrolyte outlet (19).
7. according to the described battery pile of claim 4, it is characterized in that, described battery pile first laying (21) is and the measure-alike rectangular plate structure spare of battery pile upper cover layer (20), adopting material is the material of PDMS, its thickness is 1-10mm, the middle part of battery pile first laying 21 be provided with battery pile upper cover layer (20) on the anodal electrolyte entrance (16) of battery pile, battery pile negative pole electrolyte entrance (17), anodal electrolyte outlet of battery pile (18) and the anodal electrolyte entrance of the corresponding first measure-alike laying in battery pile negative pole electrolyte outlet (19) position, the first laying negative pole electrolyte entrance, the anodal electrolyte outlet of first laying and the first laying negative pole electrolyte outlet.
8. according to the described battery pile of claim 4, it is characterized in that, described battery pile first flow layer (22) is and the measure-alike rectangular plate structure spare of battery pile upper cover layer (20), adopting material is the material of PDMS, the middle part of battery pile first flow layer (22) be provided with battery pile upper cover layer (20) on the anodal electrolyte entrance (16) of battery pile, battery pile negative pole electrolyte entrance (17), anodal electrolyte outlet of battery pile (18) and the anodal electrolyte entrance of the corresponding measure-alike first flow layer in battery pile negative pole electrolyte outlet (19) position, first flow layer negative pole electrolyte entrance, anodal electrolyte outlet of first flow layer and first flow layer negative pole electrolyte outlet, again respectively with the anodal electrolyte entrance of first flow layer, first flow layer negative pole electrolyte entrance, anodal electrolyte outlet of first flow layer and first flow layer negative pole electrolyte outlet are that the center outwards is provided with four straight channel, four straight channel that anodal electrolyte entrance of first flow layer and first flow layer negative pole electrolyte entrance outwards are provided with respectively concentrate on the first half of battery pile first flow layer (22), and four straight channel that anodal electrolyte entrance of first flow layer and first flow layer negative pole electrolyte entrance outwards are provided with respectively are alternate layouts, four straight channel that anodal electrolyte outlet of first flow layer and first flow layer negative pole electrolyte outlet outwards are provided with respectively concentrate on the latter half of battery pile first flow layer (22), and four straight channel that anodal electrolyte outlet of first flow layer and first flow layer negative pole electrolyte outlet outwards are provided with respectively are alternate layouts, and the end branch of 16 straight channel is on two straight lines and divides the both sides up and down that are listed in battery pile first flow layer (22).
9. according to the described battery pile of claim 4, it is characterized in that, described battery pile second laying (23) is and the measure-alike rectangular plate structure spare of battery pile first flow layer (22), adopting material is the material of PDMS, battery pile second laying (23) is provided with 16 holes of two rows, 8 inlets that the hole is anodal electrolyte (7) and negative pole electrolyte (8) of last row, anodal electrolyte (7) and negative pole electrolyte (8) inlet are alternate layouts, arrange the outlet that 8 holes are anodal electrolyte (7) and negative pole electrolyte (8) down, the outlet of anodal electrolyte (7) and negative pole electrolyte (8) is alternate layout, the straight channel on the position in 16 holes and the battery pile first flow layer (22) terminal corresponding.
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