CN204835684U - Mix energy storage power conversion equipment - Google Patents
Mix energy storage power conversion equipment Download PDFInfo
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- CN204835684U CN204835684U CN201520591186.2U CN201520591186U CN204835684U CN 204835684 U CN204835684 U CN 204835684U CN 201520591186 U CN201520591186 U CN 201520591186U CN 204835684 U CN204835684 U CN 204835684U
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- secondary cell
- energy storage
- flow battery
- way convertor
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- 238000004146 energy storage Methods 0.000 title claims abstract description 52
- 238000006243 chemical reaction Methods 0.000 title abstract 2
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 59
- 230000005611 electricity Effects 0.000 claims description 17
- 238000001514 detection method Methods 0.000 claims description 11
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 3
- 229910018095 Ni-MH Inorganic materials 0.000 claims description 3
- 229910018477 Ni—MH Inorganic materials 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 claims description 3
- 229910001416 lithium ion Inorganic materials 0.000 claims description 3
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011149 active material Substances 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000011712 cell development Effects 0.000 description 1
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
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Abstract
The utility model discloses a mix energy storage power conversion equipment, including an at least secondary cell and rather than a parallelly connected at least complete vanadium redox flow battery, secondary cell and full vanadium redox flow battery all are connected with the current input of an energy storage two way convertor, connect at the current output terminal of energy storage two way convertor and use the electric loading, still include one and energy storage two way convertor and being used for the measuring with electric quantity signal for the electric loading and send and drive the PCS power controller of vanadium redox flow battery enabling signal entirely with electric loading signal connection. Not only avoid the problem of the too big and overdischarge of secondary cell discharge current in the at utmost, effectively solved the problem of full vanadium redox flow battery inefficiency when the full load in addition, improved secondary cell and full vanadium redox flow battery's life greatly, and through PCS power controller, the balanced power efficiency of EMS power forecast analysis unit, effectively ensured the continuation of power supply.
Description
Technical field
The utility model relates to power supply unit technical field, is specifically related to a kind of hybrid energy-storing for electrical switching device.
Background technology
From the meeting of relevant contexts pollution problem in 2009 since Copenhagen is held, people to environmental problem growing interests such as the air pollution that coal-fired and oil cause, and along with the growing tension of global energy resource.How effectively conservation of nature environment, reduce CO2 gas purging amount, the demand of the people of the world to the novel energy material and energy-storage system that can provide larger power and energy grown with each passing day.Vanadium redox energy-storage system have low cost, high efficiency, can deep discharge ability, unique advantage such as clean and efficient.At present, it has become one of energy storage technology with application prospect most.
Vanadium cell, full name is all-vanadium flow battery (VanadiumRedoxFlowBattery, VRB), is that a kind of active material is in circulating liquid redox cell.As far back as the sixties, the redox cell of iron-chromium system is just had to come out, but the redox cell of vanadium system proposes at MarriaKacos by University of New South Wales in 1985, through the research and development of two more than ten years, vanadium cell technology convergence is ripe.In Japan, fixed (for electric vehicle) the vanadium cell development for peak-load regulation and Wind energy storage is rapid, and powerful vanadium energy storage system drops into practicality, and advances its commercialization process with all strength.All-vanadium flow battery because of its power large, capacity is large, efficiency is high, life-span is long, fast response time and can the advantage such as momentary charge, be widely used in wind power generation, photovoltaic generation, the peak load regulation network of hydroenergy storage station, electric car power supply and office block, theater, the emergency lighting places such as hospital, also can be used as uninterrupted power supply and the emergency power supplies such as the stand-by power supply of computer and some military equipments, and island, the areas such as remote districts build conventional power plant or construction erect power transmission lines cost high time electric power system, but also there are some shortcomings in all-vanadium flow battery simultaneously, such as involve great expense, the feature of environmental protection is poor, volume is larger, energy density is low, and its power supplying efficiency is low in the situation of operating at full capacity, the problems referred to above are a great problems of puzzlement those skilled in the art always.
Summary of the invention
For the deficiency that prior art exists; technical problem to be solved in the utility model is; there is provided a kind of novel structure, with low cost, the low problem of all-vanadium flow battery power supplying efficiency in the situation of operating at full capacity can be solved; protect the infringement that other batteries in parallel connection prevent because overdischarge causes battery, improve the hybrid energy-storing of power supplying efficiency for electrical switching device.
For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of hybrid energy-storing is for electrical switching device, comprise at least one secondary cell and at least one the all-vanadium flow battery in parallel with it, described secondary cell and all-vanadium flow battery are all connected with the current input terminal of an energy storage two way convertor, in the current output terminal connection electric loading of energy storage two way convertor, also comprise one be connected with energy storage two way convertor and electricity consumption load signal for detection electric loading power consumption signal and send the PCS power controller driving all-vanadium flow battery enabling signal, when described PCS power controller detection electric loading power consumption exceedes secondary cell power supplying efficiency set point, send and secondary cell direct current is converted to the EMS command signal of alternating current to energy storage two way convertor, after described energy storage two way convertor receives switching signal, the direct current of secondary cell be converted to alternating current and flow to the running of all-vanadium flow battery driving pump, all-vanadium flow battery and secondary cell are electricity consumption load supplying simultaneously, when the detection of PCS power controller with electric loading power consumption lower than secondary cell power supplying efficiency set point time, send and stop changing the direct current of secondary cell the switching signal of alternating current into energy storage two way convertor, the pump of all-vanadium flow battery work is driven to quit work, secondary cell is independently electricity consumption load supplying.
Above-mentioned hybrid energy-storing is for electrical switching device, described energy storage two way convertor is connected with one for analyzing the EMS power prediction analytic unit judging load power consumption efficiency, described PCS power controller signal input part is connected with electricity consumption load signal by EMS power prediction analytic unit, and PCS power controller signal output part is connected with energy storage two way convertor signal.
Above-mentioned hybrid energy-storing is for electrical switching device, and described secondary cell arranges two, and its both positive and negative polarity is in parallel with the both positive and negative polarity of all-vanadium flow battery respectively and be connected with the current input terminal of energy storage two way convertor.
Above-mentioned hybrid energy-storing is for electrical switching device, and described secondary cell arranges three, and its both positive and negative polarity is in parallel with the both positive and negative polarity of all-vanadium flow battery respectively and be connected with the current input terminal of energy storage two way convertor.
Above-mentioned hybrid energy-storing is for electrical switching device, and described secondary cell is one or more in lithium ion battery, lead-acid battery, nickel-cadmium cell, Ni-MH battery.
Above-mentioned hybrid energy-storing for electrical switching device, described energy storage two way convertor is provided with can be connected with device of solar generating or wind electricity generating system for the input port to secondary cell and all-vanadium flow battery energy storage.
The utility model hybrid energy-storing for the advantage of electrical switching device is: by the structure that the secondary cell of setting is in parallel with all-vanadium flow battery, and the PCS power controller arranged, EMS power prediction analytic unit, the problem of the excessive and overdischarge of secondary cell discharging current of not only avoiding to the full extent knowing clearly, and efficiently solve the problem of all-vanadium flow battery inefficiency at full capacity time, substantially increase the useful life of secondary cell and all-vanadium flow battery, and by PCS power controller, EMS power prediction analytic unit balanced feeding efficiency, the continuation of effective guarantee power supply, and the input port being used for external energy source electric generating device is set, more electricity can be stored while output electricity, in larger with electric loading power consumption or need the situation of long-time power supply can reduce replacing and the maintenance times of secondary cell and all-vanadium flow battery, greatly reduce maintenance cost, ensure the continuation of power supply.The utility model structure is simple, with low cost, practical, and application is extensive, is particularly suitable for applying.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation after the utility model connects energy source electric generating device.
Embodiment
Below in conjunction with drawings and the specific embodiments, the utility model is described in further details;
Embodiment 1:
As shown in Figure 1, a kind of hybrid energy-storing is for electrical switching device, comprise at least one secondary cell 1 and at least one the all-vanadium flow battery 2 in parallel with it, described secondary cell 1 can select one or more in lithium ion battery, lead-acid battery, nickel-cadmium cell, Ni-MH battery, all-vanadium flow battery 2 is prior art, according to actual loading power consumption, suitable capacity specification can be selected as one sees fit.Described secondary cell 1 and all-vanadium flow battery 2 are all connected with the current input terminal 4 of an energy storage two way convertor 3, current input terminal 4 arranges both positive and negative polarity, secondary cell 1 is connected with the both positive and negative polarity of current input terminal afterwards respectively with the both positive and negative polarity of all-vanadium flow battery 2 is in parallel respectively, in the current output terminal 5 connection electric loading 6 of energy storage two way convertor 3, also comprise one with energy storage two way convertor 3 and with electric loading 6 signal be connected for detection electric loading 6 power consumption signal and send the PCS power controller driving all-vanadium flow battery 2 enabling signal, when described PCS power controller detection electric loading 6 power consumption exceedes secondary cell 1 power supplying efficiency set point, send and secondary cell 1 direct current is converted to the EMS command signal of alternating current to energy storage two way convertor 3, after described energy storage two way convertor 3 receives switching signal, the direct current of secondary cell 1 be converted to alternating current and flow to the running of all-vanadium flow battery 2 driving pump, all-vanadium flow battery 2 and secondary cell 1 are simultaneously for power by electric loading 6, when the detection of PCS power controller with the power consumption of electric loading 6 lower than secondary cell 1 power supplying efficiency set point time, send and stop changing the direct current of secondary cell 1 switching signal of alternating current into energy storage two way convertor 3, the pump driving all-vanadium flow battery 2 to work quits work, secondary cell 1 is independent is electricity consumption load supplying.Energy storage two way convertor 3 is connected with one for analyzing the EMS power prediction analytic unit judging load power consumption efficiency, described PCS power controller signal input part is connected with electric loading 6 signal by EMS power prediction analytic unit, and PCS power controller signal output part is connected with energy storage two way convertor 3 signal.
Specific works process is:
Load electricity 30KW with secondary cell, all-vanadium flow battery loads electricity 70KW, calculates with electric loading power consumption 20-60KW, and the power supplying efficiency set point of setting secondary cell 1 is 30KW.
(1), when being 20-30KW with the power consumption of electric loading 6, secondary cell 1 is with electric loading 5 continued power by energy storage two way convertor 3, the detection of EMS power prediction analytic unit with the power consumption of electric loading 6 and with the electricity comparative analysis of secondary cell 1, all-vanadium flow battery 2 does not now work;
(2), when being 50KW with the power consumption of electric loading 6, the power consumption of EMS power prediction analytic unit detection electric loading 6 exceedes the power supplying efficiency set point of secondary cell, and EMS power prediction analytic unit sends the EMS command signal of the pump work starting all-vanadium flow battery 2 to PCS power controller;
(3), PCS power controller receives after enabling signal, sends and drives energy storage two way convertor 3 that the direct current of secondary cell 1 is converted to the switching signal of alternating current to energy storage two way convertor 3;
(4), energy storage two way convertor 3 changes the direct current of secondary cell 1 into alternating current and starts the pump work of all-vanadium flow battery 2, all-vanadium flow battery 2 continues through energy storage two way convertor 3 for power by electric loading 6, now secondary cell 1 and all-vanadium flow battery 2 are simultaneously for power by electric loading 6, EMS power prediction analytic unit balances the amount of power supply between secondary cell 1 and all-vanadium flow battery 2 by the power consumption signal fed back by electric loading 6, secondary cell power supplying efficiency is 20KW, and the power supplying efficiency of all-vanadium flow battery 2 shares 30KW;
(5), when being 25KW with the power consumption of electric loading 6 lower than set point, PCS power controller is sent to after EMS power prediction analytic unit detects signal, PCS power controller sends and stops energy storage two way convertor 3 to change the direct current of secondary cell 1 signal of alternating current into energy storage two way convertor 3, the pump of all-vanadium flow battery 2 quits work, and secondary cell 1 is independent of to power by electric loading 6.
Embodiment 2:
The present embodiment and embodiment 1 same section repeat no more, its difference is: for effective guarantee electric loading 6 at full capacity time all-vanadium flow battery 2 power transmission efficiency higher, secondary cell 1 can arrange two or three, and its both positive and negative polarity is in parallel with the both positive and negative polarity of all-vanadium flow battery 2 respectively and be connected with the current input terminal 4 of energy storage two way convertor 3.
As shown in Figure 2, the utility model hybrid energy-storing is for electrical switching device, described energy storage two way convertor 3 is provided with can be connected with device of solar generating 7 or wind electricity generating system 8 for the input port 9 to secondary cell 1 and all-vanadium flow battery 2 energy storage, it is that secondary cell 1 and all-vanadium flow battery 2 store more electric energy that this structure can realize while powering by electric loading 6, in larger with electric loading 6 power consumption or need the situation of long-time power supply can reduce replacing and the maintenance times of secondary cell 1 and all-vanadium flow battery 2, greatly reduce maintenance cost, ensure the continuation of power supply.
Certainly, above-mentioned explanation is not to restriction of the present utility model, and the utility model is also not limited to above-mentioned citing; those skilled in the art; in essential scope of the present utility model, the change made, remodeling, interpolation or replacement, all should belong to protection range of the present utility model.
Claims (6)
1. a hybrid energy-storing is for electrical switching device, it is characterized in that: comprise at least one secondary cell and at least one the all-vanadium flow battery in parallel with it, described secondary cell and all-vanadium flow battery are all connected with the current input terminal of an energy storage two way convertor, in the current output terminal connection electric loading of energy storage two way convertor, also comprise one be connected with energy storage two way convertor and electricity consumption load signal for detection electric loading power consumption signal and send the PCS power controller driving all-vanadium flow battery enabling signal, when described PCS power controller detection electric loading power consumption exceedes secondary cell power supplying efficiency set point, send and secondary cell direct current is converted to the EMS command signal of alternating current to energy storage two way convertor, after described energy storage two way convertor receives switching signal, the direct current of secondary cell be converted to alternating current and flow to the running of all-vanadium flow battery driving pump, all-vanadium flow battery and secondary cell are electricity consumption load supplying simultaneously, when the detection of PCS power controller with electric loading power consumption lower than secondary cell power supplying efficiency set point time, send and stop changing the direct current of secondary cell the switching signal of alternating current into energy storage two way convertor, the pump of all-vanadium flow battery work is driven to quit work, secondary cell is independently electricity consumption load supplying.
2. hybrid energy-storing according to claim 1 is for electrical switching device, it is characterized in that: described energy storage two way convertor is connected with one for analyzing the EMS power prediction analytic unit judging load power consumption efficiency, described PCS power controller signal input part is connected with electricity consumption load signal by EMS power prediction analytic unit, and PCS power controller signal output part is connected with energy storage two way convertor signal.
3. hybrid energy-storing according to claim 1 is for electrical switching device, it is characterized in that: described secondary cell arranges two, and its both positive and negative polarity is in parallel with the both positive and negative polarity of all-vanadium flow battery respectively and be connected with the current input terminal of energy storage two way convertor.
4. hybrid energy-storing according to claim 1 is for electrical switching device, it is characterized in that: described secondary cell arranges three, and its both positive and negative polarity is in parallel with the both positive and negative polarity of all-vanadium flow battery respectively and be connected with the current input terminal of energy storage two way convertor.
5. the hybrid energy-storing according to claim 1,2 or 3, for electrical switching device, is characterized in that: described secondary cell is one or more in lithium ion battery, lead-acid battery, nickel-cadmium cell, Ni-MH battery.
6. hybrid energy-storing according to claim 4 is for electrical switching device, it is characterized in that: described energy storage two way convertor is provided with can be connected with device of solar generating or wind electricity generating system for the input port to secondary cell and all-vanadium flow battery energy storage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520591186.2U CN204835684U (en) | 2015-08-09 | 2015-08-09 | Mix energy storage power conversion equipment |
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| CN201520591186.2U CN204835684U (en) | 2015-08-09 | 2015-08-09 | Mix energy storage power conversion equipment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105006876A (en) * | 2015-08-09 | 2015-10-28 | 青岛威控电气有限公司 | Mixed-energy-storage power supply conversion apparatus and conversion method |
| CN108616133A (en) * | 2016-12-09 | 2018-10-02 | 国网北京市电力公司 | A kind of energy storage device and its control method |
| CN111726021A (en) * | 2020-07-27 | 2020-09-29 | 西南交通大学 | Method for controlling bidirectional energy storage converter and bidirectional energy storage converter |
| CN114325056A (en) * | 2021-12-31 | 2022-04-12 | 北京紫光芯能科技有限公司 | Circuit for bidirectional current detection and mobile terminal |
-
2015
- 2015-08-09 CN CN201520591186.2U patent/CN204835684U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105006876A (en) * | 2015-08-09 | 2015-10-28 | 青岛威控电气有限公司 | Mixed-energy-storage power supply conversion apparatus and conversion method |
| CN108616133A (en) * | 2016-12-09 | 2018-10-02 | 国网北京市电力公司 | A kind of energy storage device and its control method |
| CN111726021A (en) * | 2020-07-27 | 2020-09-29 | 西南交通大学 | Method for controlling bidirectional energy storage converter and bidirectional energy storage converter |
| CN111726021B (en) * | 2020-07-27 | 2022-01-11 | 西南交通大学 | Method for controlling bidirectional energy storage converter and bidirectional energy storage converter |
| CN114325056A (en) * | 2021-12-31 | 2022-04-12 | 北京紫光芯能科技有限公司 | Circuit for bidirectional current detection and mobile terminal |
| CN114325056B (en) * | 2021-12-31 | 2024-02-27 | 北京紫光芯能科技有限公司 | Circuit for bidirectional current detection and mobile terminal |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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| CF01 | Termination of patent right due to non-payment of annual fee |