CN201435423Y - Communication all-vanadium redox flow battery system - Google Patents
Communication all-vanadium redox flow battery system Download PDFInfo
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- CN201435423Y CN201435423Y CN2008200560728U CN200820056072U CN201435423Y CN 201435423 Y CN201435423 Y CN 201435423Y CN 2008200560728 U CN2008200560728 U CN 2008200560728U CN 200820056072 U CN200820056072 U CN 200820056072U CN 201435423 Y CN201435423 Y CN 201435423Y
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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
Abstract
The utility model provides a communication all-vanadium redox flow battery system as a substitute for the conventional lead-acid battery. The system is provided with a cell stack, a liquid tank, a circulating pump, a temperature control system and a controller. The working process of positive electrolyte comprises that: the circulating pump pumps the positive electrolyte out of the liquid tank andfills the positive electrolyte into the cell stack through a valve; the ion exchange of the positive electrolyte is performed in the cell stack; after the charge work is finished, the positive electrolyte enters the temperature control system, and the temperature of the positive electrolyte is kept between 0 to 45 DEG C; and finally, the positive electrolyte returns back to the liquid tank. The working process of negative electrolyte is the same as that of the positive electrolyte. The circulating pump and the battery cell adopt redundant technology, so the reliability of a power supply system is improved. The temperature control system consists of an electrolyte heat exchanger and a semiconductor cooling component, and the electrolyte is cooled or heated by forward or reversed electrifying with the semiconductor cooling component. The system which is reliable in work and long in service lift, allows for overcharge and overdischarge, avoids acid fog leakage, and prevents waste processing from polluting environment is worthy to be promoted and used in communication systems.
Description
Affiliated technical field
The utility model relates to a kind of communication all-vanadium flow battery system, can be applicable in the communications field as stand-by power supply, substitutes the lead-acid batteries of using at present, belongs to the battery technology field.
Background technology
In order to guarantee the safe and reliable operation of communication network, require the electric power system in the communication system to possess high reliability, be equipped with stand-by power supply, with the communication disruption that prevents that electric main from causing when having a power failure for this reason.Stand-by power supply in the current communication system adopts lead-acid batteries.
When electric main has a power failure, power to communication host by stand-by power supply, keep the normal operation of communication network; When electric main recovers just often, by rectifier when communication host is powered, to stand-by power supply-battery charging.
Usually lead acid accumulator discharges and recharges the life-span and is approximately 1200 times, if discharge and recharge every day once, and available about 3 years, because the supply of electric power deficiency, a lot of areas one day have a power failure repeatedly because of rationing the power supply, especially in the peak electricity consumption period, power cuts to limit consumption is frequent, and many communication system battery lifes were less than 2 years.And common carrier requires the life of storage battery at least more than 5 years, and storage battery manufacturer is difficult to guarantee that high the becoming of short because of service life of lead accumulator in communication system, maintenance requirement used the highest part in the total cost.
Lead acid accumulator does not allow deep discharge, in case overdischarge, lead acid accumulator is inner can to form lead sulfate, and storage battery is very fast to be scrapped because of inefficacy.Simultaneously, often because of undercharge, also can cause the inner sulfuration of lead acid accumulator and cause storage battery to be scrapped in advance.Therefore to improve lead-acid batteries useful life, must carry out correct operating standard, but often also be that operational management person is difficult to accomplish.For this reason, but the current capacity of battery is being studied always by common carrier and lead acid accumulator manufacturer and to the prediction of discharge time, but because the electrochemical reaction complexity of lead acid accumulator, this predicated error is very big, usually can mislead the user and runs counter to desire.
Lead-acid batteries is in floating charge state when the civil power normal power supply.Because the inner self-discharge phenomenon of lead acid accumulator often makes the storage battery actual capacity constantly descend, when causing mains failure, the battery discharging time greatly reduces, and can not satisfy the requirement of communication system standby time.
Current communication system lead acid accumulator consumption is very big, and has large quantities of needs to scrap every 3 to 5 years, how these scrapped batteries is implemented environmental protection treatment, also is the problem that current environmental protection faces solution.
With regard to state-of-the art, it is still impossible to overcome the above-mentioned various shortcoming of lead acid accumulator, although so communication system to select lead-acid batteries for use be dissatisfactory as stand-by power supply, also be unavoidable selection at present.
Summary of the invention
In order to overcome a series of shortcomings that in communication system, adopt lead-acid batteries to exist as stand-by power supply, the utility model provides a kind of communication all-vanadium flow battery system, this system has that energy conversion efficiency height, reliable operation, long service life, permission super-charge super-discharge, no acid mist are revealed, there are not the advantages such as pollution to environment in the battery offal treatment, alternative traditional communication lead-acid batteries.
The technical scheme that its technical problem that solves the utility model adopts is:
1. adopt all-vanadium flow battery to substitute present tradition and be used in lead accumulator group among the communication system stand-by power supply.All-vanadium flow battery is to adopt the active material of liquid electrolyte as the battery pile energy storage, electrolyte allows long term storage and recycles, never degenerate, do not exist traditional lead-acid batteries when electrode reaction, to relate to of the conversion of a kind of solid matter to another kind of solid matter, if it is lack of standardization to discharge and recharge operation, super-charge super-discharge occurs, the damage of battery pile all can appear in lead acid accumulator, reduces bad phenomenon such as useful life.All-vanadium flow battery advantage on the principle has surpassed lead acid accumulator.
2. in order to realize all-vanadium flow battery system operate as normal, make up workbench, except battery pile, also need dispose positive and negative electrolyte fluid reservoir, positive and negative electrolyte circulating pump, temperature control system and controller etc.The course of work of battery system is: anodal circulating pump is extracted the anodal electrolyte that is stored in the anodal fluid reservoir out, by a series of valves, inject battery pile, in battery pile, implement the ion-exchange of electrolyte, after finishing the work of discharging and recharging, enter temperature control system, electrolyte is remained in the optimum working temperature scope, be back to anodal fluid reservoir then.The course of work of negative pole is with anodal identical.
The present invention is a kind of communication all-vanadium flow battery system, it is characterized in that: anodal electrolyte fluid reservoir (1) links to each other with the entrance point of anodal electrolyte circulating pump (5) with anodal electrolyte circulating pump (6) respectively, the outlet of anodal electrolyte circulating pump (5) and anodal electrolyte circulating pump (6) links to each other with anodal electrolyte unidirectional valve (18) with anodal electrolyte unidirectional valve (17) respectively, the other end of anodal electrolyte unidirectional valve (17) and anodal electrolyte unidirectional valve (18) is connected respectively to the import of valve (37) and valve (38), after lumping together, the outlet of valve (37) and valve (38) links to each other with valve (47) one ends with valve (39) respectively, the other end of its valve (39) and valve (47) links to each other with the A side-entrance of all-vanadium flow battery heap (3) with all-vanadium flow battery heap (4), two all-vanadium flow battery heaps (3) link to each other with valve (49) with valve (41) with the A side outlet of all-vanadium flow battery heap (4), valve (41) lumps together the back with valve (49) other end, and import links to each other with valve (44) with valve (43), valve (43) other end links to each other with anodal electrolysis liquid heat exchanger (13) import, directly enter in the anodal electrolyte fluid reservoir (1) after the outlet of the outlet of valve (44) and anodal electrolysis liquid heat exchanger (13) is connected, formed anodal electrolyte circulation circuit; Negative pole electrolyte fluid reservoir (2) links to each other with the entrance point of negative pole electrolyte circulating pump (7) with negative pole electrolyte circulating pump (8) respectively, the outlet of negative pole electrolyte circulating pump (7) and negative pole electrolyte circulating pump (8) links to each other with negative pole electrolyte unidirectional valve (20) with negative pole electrolyte unidirectional valve (19) respectively, the other end of negative pole electrolyte unidirectional valve (19) and negative pole electrolyte unidirectional valve (20) is connected respectively to the import of valve (45) and valve (46), after lumping together, the outlet of valve (45) and valve (46) links to each other with valve (48) one ends with valve (40) respectively, the other end of its valve (40) and valve (48) links to each other with the B side-entrance of all-vanadium flow battery heap (3) with all-vanadium flow battery heap (4), two all-vanadium flow battery heaps (3) link to each other with valve (50) with valve (42) with the B side outlet of all-vanadium flow battery heap (4), valve (42) lumps together the back with valve (50) other end, and import links to each other with valve (52) with valve (51), valve (51) other end links to each other with negative pole electrolysis liquid heat exchanger (14) import, directly enter in the negative pole electrolyte fluid reservoir (2) after the outlet of the outlet of valve (52) and anodal electrolysis liquid heat exchanger (14) is connected, formed negative pole electrolyte circulation circuit.
3. the electrolyte of all-vanadium flow battery need remain in 0～45 ℃ the temperature range, with the precipitation that prevents electrolyte or separate out, thereby influences the operate as normal of all-vanadium flow battery.Therefore dispose temperature control system in this system, it is made up of electrolyte heat exchanger and semiconductor refrigerating assembly.The cooling or the heating that utilize semiconductor refrigerating assembly to switch on forward or backwards to realize electrolyte, the exchange of heat is carried out in the electrolyte heat exchanger.When the temperature of electrolyte was lower than lower limit temperature, controller control semiconductor refrigerating assembly oppositely energising heated system as heater; When temperature was higher than ceiling temperature, the energising of controller control semiconductor cooler assembly forward was cooled off system as refrigerator; Make under its area that can adapt to different weather conditions and the different environment for use conditions and use.
The temperature control technology scheme is: semiconductor refrigerating assembly (33) is all posted in the both sides of anodal electrolysis liquid heat exchanger (13), DC power supply by Switching Power Supply (35) output is powered to semiconductor refrigerating assembly (33), anodal electrolysis liquid heat exchanger fan (15) is installed below semiconductor refrigerating assembly (33), determined semiconductor refrigerating assembly (33) to be in cooling condition or heating cycle to the still reverse energising of semiconductor refrigerating assembly (33) forward energising, this control is realized by lead (61) control relay (31) that by controller (26) anodal electrolysis liquid heat exchanger (13) is implemented anodal electrolyte temperature control together by anodal electrolysis liquid heat exchanger fan (15) and semiconductor refrigerating assembly (33); Semiconductor refrigerating assembly (34) is all posted in the both sides of negative pole electrolysis liquid heat exchanger (14), DC power supply by Switching Power Supply (35) output is powered to semiconductor refrigerating assembly (34), negative pole electrolysis liquid heat exchanger fan (16) is installed below semiconductor refrigerating assembly (34), determined semiconductor refrigerating assembly (34) to be in cooling condition or heating cycle to the still reverse energising of semiconductor refrigerating assembly (34) forward energising, this control is realized by lead (67) control relay (32) that by controller (26) negative pole electrolysis liquid heat exchanger (14) is implemented the control of negative pole electrolyte temperature together by negative pole electrolysis liquid heat exchanger fan (16) and semiconductor refrigerating assembly (34).
4. the credit DC power-supply system requires reliable operation, does not cut off the power supply, and is unimpeded to guarantee communication.For this reason, in this all-vanadium flow battery system, adopt redundant technique, some critical components such as electrolyte circulating pump and battery pile are all had backup, when certain parts breaks down, switch immediately to guarantee system's continuous operation.
The system redundancy technical scheme is: anodal electrolyte circulating pump (5) and anodal electrolyte circulating pump (6) are driven by anodal electrolyte circulating pump motor (9) and anodal electrolyte circulating pump motor (10) respectively, they backup each other, and their startup, stop and failover is controlled enforcement by controller (26) by lead (54) and lead (55); Negative pole electrolyte circulating pump (7) and negative pole electrolyte circulating pump (8) are driven by negative pole electrolyte circulating pump motor (11) and negative pole electrolyte circulating pump motor (12) respectively, they backup each other, and their startup, stop and failover is controlled enforcement by controller (26) by lead (58) and lead (59).
5. realize that battery pile normally discharges and recharges, the assurance system reliably powers, and also has been equipped with a controller in the all-vanadium flow battery system, and its function is as follows:
1) charging and the discharge process of control battery pile
2) according to climatic environment condition and battery pile operating state, the control electrolyte temperature is implemented the heating or the cooling of temperature control system
3) start and stop of control electrolyte circulating pump
4) parameters such as the operating state of measurement energy-storage system, alarm status, and show and alarm
5) realize long-haul telemetry, remote signalling, remote control and remote regulating
System's control technology scheme is: anodal electrolyte fluid reservoir liquid level gauge (21) and anodal electrolyte fluid reservoir temperature sensor (23) have been installed respectively on anodal electrolyte fluid reservoir (1), and their output signal is passed to controller (26) by lead (68) and lead (53) and is realized showing and control; Anodal electrolyte fluid reservoir liquid level gauge (22) and anodal electrolyte fluid reservoir temperature sensor (24) have been installed respectively on negative pole electrolyte fluid reservoir (2), and their output signal is passed to controller (26) by lead (69) and lead (57) and is realized showing and control.
6. the all-vanadium flow battery system adopts modularized design, and whole system is designed to the rack form, and its floor space is less than or equal to the lead-acid batteries of equal capacity, is convenient to install, transports and safeguards.
The beneficial effects of the utility model are:
1. the all-vanadium flow battery system is as the stand-by power supply of system of communication, and long service life has reduced the powered operation cost of communication system;
2. do not exist lead acid accumulator to leak the phenomenon of acid mist and the environmental protection treatment problem of discarded lead acid accumulator;
3. can deep discharge, overcharge and owe and fill, all can not cause the irreversible damage of all-vanadium flow battery;
4. the all-vanadium flow battery system adopts redundant technique, and important critical component is adopted backup, makes functional reliability higher, and the reliability of communication system is further strengthened;
5. the automaticity height of all-vanadium flow battery system, operational management is simple.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further specified.
Fig. 1 is communication all-vanadium flow battery system principle schematic diagram.
Among Fig. 1:
1. anodal electrolyte fluid reservoir 2. negative pole electrolyte fluid reservoirs
3. all-vanadium flow battery is piled 4. all-vanadium flow batteries heaps (backup)
5. anodal electrolyte circulating pump 6. anodal electrolyte circulating pumps (backup)
7. negative pole electrolyte circulating pump 8. negative pole electrolyte circulating pumps (backup)
9. anodal electrolyte circulating pump motor 10. anodal electrolyte circulating pump motors (backup)
11. negative pole electrolyte circulating pump motor 12. negative pole electrolyte circulating pump motors (backup)
13. anodal electrolysis liquid heat exchanger 14. negative pole electrolysis liquid heat exchangers
15. anodal electrolysis liquid heat exchanger fan 16. negative pole electrolysis liquid heat exchanger fans
17. anodal electrolyte unidirectional valve 18. anodal electrolyte unidirectional valves (backup)
19. negative pole electrolyte unidirectional valve 20. negative pole electrolyte unidirectional valves (backup)
21. anodal electrolyte fluid reservoir liquid level gauge 22. negative pole electrolyte fluid reservoir liquid level gauges
23. anodal electrolyte fluid reservoir temperature sensor 24. negative pole electrolyte fluid reservoir temperature sensors
25. ambient temperature transducer 26. controllers
27. load 28. current sensors
29. voltage sensor 30. contactors
31. relay (side of the positive electrode) 32. relays (negative side)
33. semiconductor refrigerating assembly (side of the positive electrode) 34. semiconductor refrigerating assemblies (negative side)
35. Switching Power Supply 36. rectifiers
37. valve 38. valves
39. valve 40. valves
41. valve 42. valves
43. valve 44. valves
45. valve 46. valves
47. valve 48. valves
49. valve 50. valves
51. valve 52. valves
53. control line 54. control lines
55. control line 56. control lines
57. control line 58. control lines
59. control line 60. control lines
61. control line 62. control lines
63. control line 64. control lines
65. control line 66. control lines
67. control line 68. control lines
69. control line
Embodiment
With reference to Fig. 1, anodal electrolyte fluid reservoir (1) links to each other with the entrance point of anodal electrolyte circulating pump (5) with anodal electrolyte circulating pump (6) respectively, the outlet of anodal electrolyte circulating pump (5) and anodal electrolyte circulating pump (6) links to each other with anodal electrolyte unidirectional valve (18) with anodal electrolyte unidirectional valve (17) respectively, the other end of anodal electrolyte unidirectional valve (17) and anodal electrolyte unidirectional valve (18) is connected respectively to the import of valve (37) and valve (38), after lumping together, the outlet of valve (37) and valve (38) links to each other with valve (47) one ends with valve (39) respectively, the other end of its valve (39) and valve (47) links to each other with the A side-entrance of all-vanadium flow battery heap (3) with all-vanadium flow battery heap (4), two all-vanadium flow battery heaps (3) link to each other with valve (49) with valve (41) with the A side outlet of all-vanadium flow battery heap (4), valve (41) lumps together the back with valve (49) other end, and import links to each other with valve (44) with valve (43), valve (43) other end links to each other with anodal electrolysis liquid heat exchanger (13) import, directly enter in the anodal electrolyte fluid reservoir (1) after the outlet of the outlet of valve (44) and anodal electrolysis liquid heat exchanger (13) is connected, formed anodal electrolyte circulation circuit; Anodal electrolyte circulating pump (5) and anodal electrolyte circulating pump (6) are driven by anodal electrolyte circulating pump motor (9) and anodal electrolyte circulating pump motor (10) respectively; Semiconductor refrigerating assembly (33) is all posted in the both sides of anodal electrolysis liquid heat exchanger (13), decided the semiconductor cooler assembly to be in cooling condition or heating cycle to the still reverse energising of refrigerating assembly forward energising, this control is finished by relay (31); The temperature that anodal electrolysis liquid heat exchanger fan (15) is implemented anodal electrolyte with semiconductor refrigerating assembly (33) is controlled; Anodal electrolyte fluid reservoir liquid level gauge (21) and anodal electrolyte fluid reservoir temperature sensor (23) are installed respectively on anodal electrolyte fluid reservoir (1).
Negative pole electrolyte fluid reservoir (2) links to each other with the entrance point of negative pole electrolyte circulating pump (7) with negative pole electrolyte circulating pump (8) respectively, the outlet of negative pole electrolyte circulating pump (7) and negative pole electrolyte circulating pump (8) links to each other with negative pole electrolyte unidirectional valve (20) with negative pole electrolyte unidirectional valve (19) respectively, the other end of negative pole electrolyte unidirectional valve (19) and negative pole electrolyte unidirectional valve (20) is connected respectively to the import of valve (45) and valve (46), after lumping together, the outlet of valve (45) and valve (46) links to each other with valve (48) one ends with valve (40) respectively, the other end of its valve (40) and valve (48) links to each other with the B side-entrance of all-vanadium flow battery heap (3) with all-vanadium flow battery heap (4), two all-vanadium flow battery heaps (3) link to each other with valve (50) with valve (42) with the B side outlet of all-vanadium flow battery heap (4), valve (42) lumps together the back with valve (50) other end, and import links to each other with valve (52) with valve (51), valve (51) other end links to each other with negative pole electrolysis liquid heat exchanger (14) import, directly enter in the negative pole electrolyte fluid reservoir (2) after the outlet of the outlet of valve (52) and anodal electrolysis liquid heat exchanger (14) is connected, formed negative pole electrolyte circulation circuit; Negative pole electrolyte circulating pump (7) and negative pole electrolyte circulating pump (8) are driven by negative pole electrolyte circulating pump motor (11) and negative pole electrolyte circulating pump motor (12) respectively; Semiconductor refrigerating assembly (34) is all posted in the both sides of negative pole electrolysis liquid heat exchanger (14), determined the semiconductor cooler assembly to be in cooling condition or heating cycle to the still reverse energising of refrigerating assembly forward energising, this control is finished by relay (32); The temperature that negative pole electrolysis liquid heat exchanger (14) is implemented negative pole electrolyte by negative pole electrolysis liquid heat exchanger fan (16) with semiconductor refrigerating assembly (34) is controlled; Negative pole electrolyte fluid reservoir liquid level gauge (22) and negative pole electrolyte fluid reservoir temperature sensor (24) are installed respectively on negative pole electrolyte fluid reservoir (2).
Two positive poles and two negative poles of all-vanadium flow battery heap (3) and all-vanadium flow battery heap (4) are used the lead parallel connection respectively, series current transducer (28) on negative lead, shunt voltage transducer (29) between positive and negative electrode; Positive pole links to each other with load (27) with rectifier (36) respectively with negative lead, constitutes the electric charging and discharging circuit of all-vanadium flow battery.
Switching Power Supply (35) is real to be DC-to-DC converter, and the direct voltage of all-vanadium flow battery being piled (3) and all-vanadium flow battery heap (4) is converted to direct current 24V.The input of Switching Power Supply (35) links to each other with rectifier (36) positive and negative electrode, and its output links to each other with relay (32) with relay (31) respectively.
Ambient temperature transducer (25) is the usefulness of measuring machine in-cabinet temperature.
Controller (26) is used lead (53) respectively, lead (54), lead (55), lead (56), lead (57), lead (58), lead (59), lead (60), lead (61), lead (62), lead (63), lead (64), lead (65), lead (66), lead (67), lead (68), lead (69) and anodal electrolyte fluid reservoir temperature sensor (23), anodal electrolyte circulating pump motor (9), anodal electrolyte circulating pump motor (10), anodal electrolysis liquid heat exchanger fan (15), negative pole electrolyte fluid reservoir temperature sensor (24), negative pole electrolyte circulating pump motor (11), negative pole electrolyte circulating pump motor (12), negative pole electrolysis liquid heat exchanger fan (16), relay (31), voltage sensor (29), current sensor (28), relay (32), ambient temperature transducer (25) is realized being electrically connected, and constitutes electric control loop.
Divide the charging of all-vanadium flow battery system and two operating modes of discharging that the operation principle of this system is described below.
The charging operating mode:
When civil power is in the normal power supply state, under controller (26) control, contactor (30) is closed a floodgate, make rectifier (36) output DC source, to load (27) power supply, under controller (26) control, the all-vanadium flow battery system is under the charged state simultaneously.At first, anodal electrolyte circulating pump motor (9) is gone up electric operation, drive anodal electrolyte circulating pump (5), and from anodal electrolyte fluid reservoir (1), extract anodal electrolyte out, inject the electrolyte into the A side of all-vanadium flow battery heap (3) and all-vanadium flow battery heap (4) by anodal electrolyte unidirectional valve (17) and valve (37), valve (39) and valve (47); What process was carried out simultaneously therewith is, negative pole electrolyte circulating pump motor (11) is gone up electric operation, drive negative pole electrolyte circulating pump (7), and from negative pole electrolyte fluid reservoir (2), extract negative pole electrolyte out, inject the electrolyte into the B side of all-vanadium flow battery heap (3) and all-vanadium flow battery heap (4) by negative pole electrolyte unidirectional valve (19), valve (45), valve (48) and valve (40); If the positive pole and the negative pole of all-vanadium flow battery heap are in charged state, following electrochemical reaction takes place in all-vanadium flow battery heap this moment (3) and the all-vanadium flow battery heap (4): the active material V+4 ion in A side (positive terminal) electrolyte obtains positive charge becomes the V+5 ion, and H+ makes the active material V that is in B side (negative pole end) electrolyte by proton exchange membrane
+ 3Ion becomes V because of electron gain
+ 2Ion; When constituting charge circuit electrical power storage among electrolyte, at this moment, potential difference raises between the positive and negative electrode, progress along with charging process, potential difference further raises, and when reaching setting, charging process will change floating charge state under the control of controller (26).
The discharge operating mode:
When mains failure, contactor (30) makes the no DC power supply output of rectifier (36) because of dead electricity separating brake voluntarily, and at this moment, all-vanadium flow battery heap (3) and all-vanadium flow battery are piled (4) and powered to load (27) immediately; Meanwhile, anodal electrolyte circulating pump (5) and negative pole electrolyte circulating pump (7) are devoted oneself to work under the driving of anodal electrolyte circulating pump motor (9) and negative pole electrolyte circulating pump motor (11) immediately under controller (26) control; Circulate electrolyte process and charging process circulation are just the same, but the electrochemical reaction in the all-vanadium flow battery heap is different, the active material V in A side (positive terminal) electrolyte
+ 5The ion electron gain becomes V
+ 4Ion, the active material V in B side (negative pole end) electrolyte
+ 2Ion becomes V because of losing electronics
+ 3Ion.Inside battery forms discharge loop by the H+ conduction, and the electric energy of active material discharges in the electrolyte being stored in, to load (27) output electric energy; At this moment, potential difference descends between the positive and negative electrode, and along with the progress of discharge process, potential difference further descends, and when reaching setting, discharge process will stop; In general, the Capacity design of battery pack is to guarantee that the battery power discharge time greater than civil power break period, only in this way could guarantee running without interruption of communication system; When civil power was sent a telegram here, under controller (26) control, system entered charged state immediately, and the all-vanadium flow battery system stops to power to the load.
Claims (4)
1, a kind of communication all-vanadium flow battery system, it is characterized in that: anodal electrolyte fluid reservoir (1) links to each other with the entrance point of anodal electrolyte circulating pump (5) with anodal electrolyte circulating pump (6) respectively, the outlet of anodal electrolyte circulating pump (5) and anodal electrolyte circulating pump (6) links to each other with anodal electrolyte unidirectional valve (18) with anodal electrolyte unidirectional valve (17) respectively, the other end of anodal electrolyte unidirectional valve (17) and anodal electrolyte unidirectional valve (18) is connected respectively to the import of valve (37) and valve (38), after lumping together, the outlet of valve (37) and valve (38) links to each other with valve (47) one ends with valve (39) respectively, the other end of its valve (39) and valve (47) links to each other with the A side-entrance of all-vanadium flow battery heap (3) with all-vanadium flow battery heap (4), two all-vanadium flow battery heaps (3) link to each other with valve (49) with valve (41) with the A side outlet of all-vanadium flow battery heap (4), valve (41) lumps together the back with valve (49) other end, and import links to each other with valve (44) with valve (43), valve (43) other end links to each other with anodal electrolysis liquid heat exchanger (13) import, directly enter in the anodal electrolyte fluid reservoir (1) after the outlet of the outlet of valve (44) and anodal electrolysis liquid heat exchanger (13) is connected, formed anodal electrolyte circulation circuit; Negative pole electrolyte fluid reservoir (2) links to each other with the entrance point of negative pole electrolyte circulating pump (7) with negative pole electrolyte circulating pump (8) respectively, the outlet of negative pole electrolyte circulating pump (7) and negative pole electrolyte circulating pump (8) links to each other with negative pole electrolyte unidirectional valve (20) with negative pole electrolyte unidirectional valve (19) respectively, the other end of negative pole electrolyte unidirectional valve (19) and negative pole electrolyte unidirectional valve (20) is connected respectively to the import of valve (45) and valve (46), after lumping together, the outlet of valve (45) and valve (46) links to each other with valve (48) one ends with valve (40) respectively, the other end of its valve (40) and valve (48) links to each other with the B side-entrance of all-vanadium flow battery heap (3) with all-vanadium flow battery heap (4), two all-vanadium flow battery heaps (3) link to each other with valve (50) with valve (42) with the B side outlet of all-vanadium flow battery heap (4), valve (42) lumps together the back with valve (50) other end, and import links to each other with valve (52) with valve (51), valve (51) other end links to each other with negative pole electrolysis liquid heat exchanger (14) import, directly enter in the negative pole electrolyte fluid reservoir (2) after the outlet of the outlet of valve (52) and anodal electrolysis liquid heat exchanger (14) is connected, formed negative pole electrolyte circulation circuit.
2, communication all-vanadium flow battery according to claim 1 system, it is characterized in that: semiconductor refrigerating assembly (33) is all posted in the both sides of anodal electrolysis liquid heat exchanger (13), DC power supply by Switching Power Supply (35) output is powered to semiconductor refrigerating assembly (33), anodal electrolysis liquid heat exchanger fan (15) is installed below semiconductor refrigerating assembly (33), determined semiconductor refrigerating assembly (33) to be in cooling condition or heating cycle to the still reverse energising of semiconductor refrigerating assembly (33) forward energising, this control is realized by lead (61) control relay (31) that by controller (26) anodal electrolysis liquid heat exchanger (13) is implemented anodal electrolyte temperature control together by anodal electrolysis liquid heat exchanger fan (15) and semiconductor refrigerating assembly (33); Semiconductor refrigerating assembly (34) is all posted in the both sides of negative pole electrolysis liquid heat exchanger (14), DC power supply by Switching Power Supply (35) output is powered to semiconductor refrigerating assembly (34), negative pole electrolysis liquid heat exchanger fan (16) is installed below semiconductor refrigerating assembly (34), determined semiconductor refrigerating assembly (34) to be in cooling condition or heating cycle to the still reverse energising of semiconductor refrigerating assembly (34) forward energising, this control is realized by lead (67) control relay (32) that by controller (26) negative pole electrolysis liquid heat exchanger (14) is implemented the control of negative pole electrolyte temperature together by negative pole electrolysis liquid heat exchanger fan (16) and semiconductor refrigerating assembly (34).
3, communication all-vanadium flow battery according to claim 1 system, it is characterized in that: anodal electrolyte circulating pump (5) and anodal electrolyte circulating pump (6) are driven by anodal electrolyte circulating pump motor (9) and anodal electrolyte circulating pump motor (10) respectively, they backup each other, and their startup, stop and failover is controlled enforcement by controller (26) by lead (54) and lead (55); Negative pole electrolyte circulating pump (7) and negative pole electrolyte circulating pump (8) are driven by negative pole electrolyte circulating pump motor (11) and negative pole electrolyte circulating pump motor (12) respectively, they backup each other, and their startup, stop and failover is controlled enforcement by controller (26) by lead (58) and lead (59).
4, communication all-vanadium flow battery according to claim 1 system, it is characterized in that: anodal electrolyte fluid reservoir liquid level gauge (21) and anodal electrolyte fluid reservoir temperature sensor (23) have been installed respectively on anodal electrolyte fluid reservoir (1), and their output signal is passed to controller (26) by lead (68) and lead (53) and is realized showing and control; Anodal electrolyte fluid reservoir liquid level gauge (22) and anodal electrolyte fluid reservoir temperature sensor (24) have been installed respectively on negative pole electrolyte fluid reservoir (2), and their output signal is passed to controller (26) by lead (69) and lead (57) and is realized showing and control.
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| CN2008200560728U CN201435423Y (en) | 2008-03-11 | 2008-03-11 | Communication all-vanadium redox flow battery system |
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| CN2008200560728U CN201435423Y (en) | 2008-03-11 | 2008-03-11 | Communication all-vanadium redox flow battery system |
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