CN204046183U - A kind of multiple elements design energy storage device - Google Patents
A kind of multiple elements design energy storage device Download PDFInfo
- Publication number
- CN204046183U CN204046183U CN201420391848.7U CN201420391848U CN204046183U CN 204046183 U CN204046183 U CN 204046183U CN 201420391848 U CN201420391848 U CN 201420391848U CN 204046183 U CN204046183 U CN 204046183U
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- phase reactor
- electric capacity
- super capacitor
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- 238000004146 energy storage Methods 0.000 title claims abstract description 78
- 239000003990 capacitor Substances 0.000 claims abstract description 50
- 230000005611 electricity Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 230000000087 stabilizing effect Effects 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 2
- 230000009897 systematic effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
-
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
-
- 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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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- Supply And Distribution Of Alternating Current (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a kind of Diversity energy storage device, comprise super capacitor circuit and energy-storage battery circuit, super capacitor circuit, energy-storage battery circuit all access two-way DC/AC current transformer.Direct current system by DC/AC current transformer access electrical network, with photovoltaic, wind-powered electricity generation conbined usage, is played the effect of stabilizing new forms of energy power fluctuation, improving the quality of power supply by the utility model.
Description
Technical field
The utility model relates to a kind of multiple elements design energy storage device, belongs to technical field of new energy application.
Background technology
Be becoming tight day along with energy crisis and the growth requirement of clean energy resource; facilitate the large-scale application of regenerative resource as photovoltaic, wind-powered electricity generation etc.; these electricity generation systems have the feature such as intermittence, fluctuation; impact is created on the safety and stability of electrical network, reliability and the quality of power supply, stored energy application can realize in generation of electricity by new energy electric energy storage, peak load shifting, stabilize new forms of energy and go out the function such as fluctuation and emergency use.Energy storage device conventional at present can be divided into power-type and energy type, and power-type energy storage is as large in super capacitor etc. has power density, the advantages such as fast response time, but energy density is less; Energy type energy-storage system such as battery energy storage etc. has the large feature of energy density, but power response is unsuitable for frequent discharge and recharge more slowly.Based on These characteristics, single energy storage device is difficult to the demand meeting the new forms of energy increasingly developed, and in conjunction with above-mentioned two or more energy storage composition mixed energy storage system, must make up the deficiency of respective system, improve its overall permanence.
By the mutual supplement with each other's advantages of energy type energy storage and power-type energy-storage system, multiple elements design energy-storage system can be formed, utilize super capacitor high power density, the feature of quick charge and discharge, realize the object stabilizing the fluctuation of distributed power source instantaneous power, utilize battery system energy density large, the feature of voltage stabilization, stabilize macrocyclic power fluctuation, the multiple elements design energy-storage system then formed based on super capacitor and battery effectively can improve the quality of power supply and the schedulability of generation of electricity by new energy, multiple elements design energy-storage system can adopt the power that super capacitor flat volatility frequency is higher when combining independent operating with distributed power generation, under both actings in conjunction, effectively can avoid the frequent discharge and recharge of battery, improve the power response characteristic of energy storage simultaneously.
Current multiple elements design energy-storage system mainly contains the following two kinds mode, one is in parallel at AC after each energy-accumulating medium accesses DC/AC current transformer respectively, the power division of multiple elements design energy storage is controlled by DC/AC, which makes energy-accumulating medium collect at AC after isolation, can not give full play to the fast response characteristic of its direct current; Another kind be by after each energy-accumulating medium access DC/DC converter at DC side parallel, again in DC/AC current transformer access electrical network, which required electric power electronic installation is many, cost is high, efficiency is low, and need cooperation control due to the operation of two DC/DC devices, there will be the problems such as time delay is synchronous, reduce the effect of multiple elements design energy storage.
Utility model content
Technical problem to be solved in the utility model is, reduces the cost of multiple elements design energy storage device in DC parallel side, improves system conversion efficiency, improve its power response speed simultaneously;
Another technical problem to be solved in the utility model realizes compensating the precharge of super capacitor free voltage, improves systematic difference scope.
The utility model is achieved through the following technical solutions:
A kind of Diversity energy storage device, comprise super capacitor circuit and energy-storage battery circuit, super capacitor circuit, energy-storage battery circuit all access two-way DC/AC current transformer.
Aforesaid Diversity energy storage device, it is characterized in that: super capacitor circuit comprises super capacitor, second inductance L 2 is connected with super capacitor one end, and second inductance L 2 other end accesses the input port one of two-way DC/AC current transformer after being sequentially connected in series the 4th K switch 4, second DC fast speed fuse F2; The other end of super capacitor accesses the input port two of two-way DC/AC current transformer.
Aforesaid Diversity energy storage device, it is characterized in that: energy-storage battery circuit comprises energy-storage battery, the positive terminal of energy-storage battery connects precharge control switch K1, pre-charge resistance R1, direct current precharge buffer capacitor C1 successively, and direct current precharge buffer capacitor C1 is connected to energy-storage battery negative pole; Direct-current isolating switch K2 one end connects the positive pole of energy-storage battery, and the other end is connected to the node between pre-charge resistance R1 and direct current precharge buffer capacitor C1; Filter inductance L1 one end connects the node between pre-charge resistance R1 and direct current precharge buffer capacitor C1, the filter inductance L1 other end connects the 3rd K switch 3, first DC fast speed fuse F1 successively, and the first DC fast speed fuse F1 other end accesses the input port one of two-way DC/AC current transformer; Energy-storage battery negative pole accesses the input port two of two-way DC/AC current transformer.
Aforesaid Diversity energy storage device, it is characterized in that: described two-way DC/AC current transformer comprises three-phase bridge circuit, the input of three-phase bridge circuit comprises input port one and input port two, the output of three-phase bridge circuit connects the 4th single-phase reactor L4, the 5th single-phase reactor L5, the 6th single-phase reactor L6 respectively, and the 4th single-phase reactor L4, the 5th single-phase reactor L5, the 6th single-phase reactor L6 are connected to AC load or electrical network respectively.
Aforesaid Diversity energy storage device, is characterized in that: between three-phase bridge circuit two input, connect one second electric capacity C2.
Aforesaid Diversity energy storage device, it is characterized in that: be connected a filter circuit at the 4th single-phase reactor L4, the 5th single-phase reactor L5 with the 6th single-phase reactor L6 output, described filter circuit comprises three electric capacity, 4th single-phase reactor L4 is connected with the 3rd electric capacity C31 one end, 5th single-phase reactor L5 is connected with the 4th electric capacity C32 one end, 6th single-phase reactor L6 is connected with the 5th electric capacity C33 one end, and the 3rd electric capacity C31, the 4th electric capacity C32 are connected with the other end of the 5th electric capacity C33.
The beneficial effects of the utility model:
The utility model proposes a kind of multiple elements design energy storage device, this device adopts single DC/DC converter to access energy type energy-accumulating medium, power-type energy-accumulating medium is directly incorporated into DC bus, the response speed of power-type energy-accumulating medium can be improved, give full play to the advantage that power-type energy-accumulating medium life cycle is long, realize controlling the power of energy type energy-storage system by control DC/DC converter, avoid its frequent discharge and recharge, by direct current system by DC/AC current transformer access electrical network, with photovoltaic, wind-powered electricity generation conbined usage, new forms of energy power fluctuation is stabilized in performance, improve the effect of the quality of power supply.
Accompanying drawing explanation
The multiple elements design energy storage device topology diagram of a kind of improvement of Fig. 1;
Starting-up later time during Fig. 2 super capacitor no-voltage;
Fig. 3 super-capacitor voltage is less than starting-up later time during energy-storage battery voltage;
Fig. 4 super-capacitor voltage is greater than starting-up later time during energy-storage battery voltage.
Embodiment
With reference to the accompanying drawings and in conjunction with example, the utility model is described in further detail.
A kind of Diversity energy storage device of the utility model and topological structure thereof as shown in Figure 1, mainly comprise direct current access part, DC converting part, direct current protecting and isolated part, two-way DC/AC unsteady flow part form; Described direct current access part, DC converting part, direct current protecting are connected through energy-storage battery and super capacitor two loops successively with isolated part, the two-way DC/AC unsteady flow part of access after in parallel;
Direct current access section is divided and is comprised super capacitor access and access with energy-storage battery, and wherein energy-storage battery needs through direct current precharge loop after accessing, the direct connecting system of super capacitor; Wherein K1 is precharge control switch, R1 is pre-charge resistance, K2 is direct-current isolating switch, C1 is direct current precharge buffer capacitor; DC converting part comprises energy-storage battery conversion and converts with super capacitor, and energy-storage battery conversion forms booster circuit by L1 filter inductance and switching element T 7, T8, and super capacitor is transformed to the flat ripple loop of direct current that L2 is formed;
In DC filtering and protection part, F1 and F2 is DC fast speed fuse, the effect that the direct current playing protection energy-storage battery and super capacitor exports, prevent the impact failure power device of larger current, K3 and K4 is used for controlling energy-storage battery and super capacitor and whether accesses DC bus, control the pre-charge process in start-up course, prevent impulse current, in running, can excise or drop into battery or super capacitor, protection battery capacity limit value;
Two-way DC/AC current transformer is three-phase bridge circuit, and switching device all adopts wholly-controled device, and C2 plays the effect of direct voltage buffering and filtering, L4, L5, L6 are three single-phase reactors, level and smooth interchange exports, and C3 exchanges the filter circuit exported, and can reduce ac output current harmonic content.
Described energy-storage battery direct current precharge loop is sustainable for providing pre-charge current to super capacitor when super-capacitor voltage is lower.
Fig. 2 be super capacitor with no pressure time starting-up later time, wherein u
batfor energy-storage battery voltage, i
batfor energy-storage battery output current, u
capfor super capacitor terminal voltage, i
capfor super capacitor output current, u
infor DC/AC DC voltage, i
infor DC/AC DC side input current.When u being detected
capclose to 0 time, first Closing Switch K1, K3 and K4, energy-storage battery to the precharge of C1 electric capacity, and due to the anti-paralleled diode of switching element T 8 be conducting state, energy-storage battery also charges to electric capacity C2 and super capacitor, when u being detected
involtage, u
capvoltage and u
batwhen voltage is identical, Closing Switch K2, now starts successfully.
Fig. 3 is the starting-up later time of super-capacitor voltage when being less than energy-storage battery voltage.When u being detected
cap≤ u
batand u
capduring >0, first Closing Switch K1, K3, energy-storage battery is to the precharge of C1 electric capacity, and due to the anti-paralleled diode conducting of switching element T 8, energy-storage battery also charges, when u being detected to electric capacity C2
involtage and u
capwhen voltage is identical, Closing Switch K4, energy-storage battery charges jointly to electric capacity C2 and super capacitor, treats u
involtage, u
capvoltage and u
batwhen voltage is identical, Closing Switch K2, now starts successfully.
Fig. 4 is the starting-up later time of super-capacitor voltage when being greater than energy-storage battery voltage.When u being detected
cap>=u
battime, first Closing Switch K1, K3, energy-storage battery is to the precharge of C1 electric capacity, and due to the anti-paralleled diode conducting of switching element T 8, energy-storage battery also charges, when u being detected to electric capacity C2
capvoltage and u
batwhen voltage is identical, Closing Switch K2, give the pwm signal of switching element T 7, T8 fixed duty cycle subsequently, DC transfer circuit works in pressure-increasning state, u
involtage rise, when u being detected
involtage rise to u
capwhen voltage is identical, Closing Switch K4, now starts successfully.
The above is embodiment of the present utility model, by simplifying the DC converting of super capacitor and access part, reduce the cost of multiple elements design energy storage device in DC parallel side, improve system conversion efficiency, improve its power response speed simultaneously, the direct current precharge control loop of energy-storage battery can realize compensating the precharge of super capacitor free voltage, improves systematic difference scope.
Claims (5)
1. a Diversity energy storage device, comprise super capacitor circuit and energy-storage battery circuit, super capacitor circuit, energy-storage battery circuit all accesses two-way DC/AC current transformer, described two-way DC/AC current transformer comprises three-phase bridge circuit, the input of three-phase bridge circuit comprises input port one and input port two, the output of three-phase bridge circuit connects the 4th single-phase reactor L4 respectively, 5th single-phase reactor L5, 6th single-phase reactor L6, 4th single-phase reactor L4, 5th single-phase reactor L5, 6th single-phase reactor L6 is connected to AC load or electrical network respectively.
2. Diversity energy storage device according to claim 1, it is characterized in that: super capacitor circuit comprises super capacitor, second inductance L 2 is connected with super capacitor one end, and second inductance L 2 other end accesses the input port one of two-way DC/AC current transformer after being sequentially connected in series the 4th K switch 4, second DC fast speed fuse F2; The other end of super capacitor accesses the input port two of two-way DC/AC current transformer.
3. Diversity energy storage device according to claim 1, it is characterized in that: energy-storage battery circuit comprises energy-storage battery, the positive terminal of energy-storage battery connects precharge control switch K1, pre-charge resistance R1, direct current precharge buffer capacitor C1 successively, and direct current precharge buffer capacitor C1 is connected to energy-storage battery negative pole; Direct-current isolating switch K2 one end connects the positive pole of energy-storage battery, and the other end is connected to the node between pre-charge resistance R1 and direct current precharge buffer capacitor C1; Filter inductance L1 one end connects the node between pre-charge resistance R1 and direct current precharge buffer capacitor C1, the filter inductance L1 other end connects the 3rd K switch 3, first DC fast speed fuse F1 successively, and the first DC fast speed fuse F1 other end accesses the input port one of two-way DC/AC current transformer; Energy-storage battery negative pole accesses the input port two of two-way DC/AC current transformer.
4. Diversity energy storage device according to claim 1, is characterized in that: between three-phase bridge circuit two input, connect one second electric capacity C2.
5. Diversity energy storage device according to claim 1, it is characterized in that: be connected a filter circuit at the 4th single-phase reactor L4, the 5th single-phase reactor L5 with the 6th single-phase reactor L6 output, described filter circuit comprises three electric capacity, 4th single-phase reactor L4 is connected with the 3rd electric capacity C31 one end, 5th single-phase reactor L5 is connected with the 4th electric capacity C32 one end, 6th single-phase reactor L6 is connected with the 5th electric capacity C33 one end, and the 3rd electric capacity C31, the 4th electric capacity C32 are connected with the other end of the 5th electric capacity C33.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201420391848.7U CN204046183U (en) | 2014-07-15 | 2014-07-15 | A kind of multiple elements design energy storage device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420391848.7U CN204046183U (en) | 2014-07-15 | 2014-07-15 | A kind of multiple elements design energy storage device |
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| CN204046183U true CN204046183U (en) | 2014-12-24 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104993533A (en) * | 2015-06-30 | 2015-10-21 | 上海交通大学 | Modular multilevel converter inter-bridge-arm energy balance control method |
| CN105552944A (en) * | 2016-02-26 | 2016-05-04 | 东北大学 | Network system comprising energy storage and energy router and energy adjustment method |
| CN106340892A (en) * | 2016-10-12 | 2017-01-18 | 上海电机学院 | Control device of energy storage system used for inhibiting wind power output power |
| CN107482662A (en) * | 2017-09-21 | 2017-12-15 | 国网上海市电力公司 | A kind of composite energy storage system suitable for micro-capacitance sensor |
| CN107745717A (en) * | 2017-11-03 | 2018-03-02 | 中车株洲电力机车有限公司 | Track traffic hybrid power system control circuit, rail traffic vehicles and its method of supplying power to |
| CN109904866A (en) * | 2019-02-22 | 2019-06-18 | 国电南瑞科技股份有限公司 | A kind of the micro-grid connection control method for coordinating and its system of polynary energy storage |
| CN110212562A (en) * | 2019-06-27 | 2019-09-06 | 上海电力学院 | For the control method of direct-current grid mixed energy storage system, device and equipment |
| CN110518660A (en) * | 2019-08-15 | 2019-11-29 | 矽力杰半导体技术(杭州)有限公司 | Electric power management circuit, capacitance management circuit and capacitance management method |
| CN110854879A (en) * | 2019-11-19 | 2020-02-28 | 国网安徽省电力有限公司 | Be applied to electric wire netting frequency modulation device of photovoltaic direct current side |
| CN117818383A (en) * | 2024-03-06 | 2024-04-05 | 山东科技大学 | Composite battery system for vehicle and energy control method thereof |
-
2014
- 2014-07-15 CN CN201420391848.7U patent/CN204046183U/en not_active Expired - Lifetime
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104993533B (en) * | 2015-06-30 | 2017-06-09 | 上海交通大学 | Energy equilibrium control method between modular multi-level converter bridge arm |
| CN104993533A (en) * | 2015-06-30 | 2015-10-21 | 上海交通大学 | Modular multilevel converter inter-bridge-arm energy balance control method |
| CN105552944A (en) * | 2016-02-26 | 2016-05-04 | 东北大学 | Network system comprising energy storage and energy router and energy adjustment method |
| CN105552944B (en) * | 2016-02-26 | 2017-12-01 | 东北大学 | A kind of network system and energy adjustment method comprising energy storage and energy router |
| CN106340892B (en) * | 2016-10-12 | 2019-01-18 | 上海电机学院 | For stabilizing the control equipment of the energy-storage system of wind power output power |
| CN106340892A (en) * | 2016-10-12 | 2017-01-18 | 上海电机学院 | Control device of energy storage system used for inhibiting wind power output power |
| CN107482662A (en) * | 2017-09-21 | 2017-12-15 | 国网上海市电力公司 | A kind of composite energy storage system suitable for micro-capacitance sensor |
| CN107745717B (en) * | 2017-11-03 | 2019-06-07 | 中车株洲电力机车有限公司 | Rail traffic hybrid power system control circuit, rail traffic vehicles and its method of supplying power to |
| CN107745717A (en) * | 2017-11-03 | 2018-03-02 | 中车株洲电力机车有限公司 | Track traffic hybrid power system control circuit, rail traffic vehicles and its method of supplying power to |
| CN109904866A (en) * | 2019-02-22 | 2019-06-18 | 国电南瑞科技股份有限公司 | A kind of the micro-grid connection control method for coordinating and its system of polynary energy storage |
| CN109904866B (en) * | 2019-02-22 | 2021-07-02 | 国电南瑞科技股份有限公司 | Multi-energy-storage microgrid grid-connected coordination control method and system |
| CN110212562A (en) * | 2019-06-27 | 2019-09-06 | 上海电力学院 | For the control method of direct-current grid mixed energy storage system, device and equipment |
| CN110518660A (en) * | 2019-08-15 | 2019-11-29 | 矽力杰半导体技术(杭州)有限公司 | Electric power management circuit, capacitance management circuit and capacitance management method |
| CN110518660B (en) * | 2019-08-15 | 2021-12-14 | 矽力杰半导体技术(杭州)有限公司 | Power management circuit, capacitor management circuit and capacitor management method |
| CN110854879A (en) * | 2019-11-19 | 2020-02-28 | 国网安徽省电力有限公司 | Be applied to electric wire netting frequency modulation device of photovoltaic direct current side |
| CN117818383A (en) * | 2024-03-06 | 2024-04-05 | 山东科技大学 | Composite battery system for vehicle and energy control method thereof |
| CN117818383B (en) * | 2024-03-06 | 2024-04-30 | 山东科技大学 | Composite battery system for vehicle and energy control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A multicomponent composite energy storage device Effective date of registration: 20220118 Granted publication date: 20141224 Pledgee: Yangzhou Guangling Branch of Bank of China Ltd. Pledgor: JIANGSU ELE ELECTRIC Co.,Ltd. Registration number: Y2022320000020 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141224 |