CN103208825A - Photovoltaic charging system and charging station - Google Patents
Photovoltaic charging system and charging station Download PDFInfo
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- CN103208825A CN103208825A CN2012100143063A CN201210014306A CN103208825A CN 103208825 A CN103208825 A CN 103208825A CN 2012100143063 A CN2012100143063 A CN 2012100143063A CN 201210014306 A CN201210014306 A CN 201210014306A CN 103208825 A CN103208825 A CN 103208825A
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- 238000007600 charging Methods 0.000 title claims abstract description 48
- 230000005611 electricity Effects 0.000 claims description 29
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 238000012544 monitoring process Methods 0.000 claims description 5
- 229910052744 lithium Inorganic materials 0.000 claims description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- 238000004146 energy storage Methods 0.000 description 6
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002641 lithium Chemical class 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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Abstract
The invention discloses a photovoltaic charging system which includes a solar cell module, a storage battery module, a first DC (direct current) /DC circuit, a first DC/AC (alternating current) circuit, a second DC/AC circuit and a second DC/DC circuit, wherein the first DC/DC circuit is used for utilizing a DC output by the solar cell module to charge the storage battery module, the first DC/AC circuit is used for converting a DC into an AC and transmitting the AC to AC electric equipment and/or a grid, the second DC/AC circuit is used for converting a DC output by the storage battery module into an AC and transmitting the AC to the AC electric equipment and/or the grid, and the second DC/DC circuit is used for converting a DC output by the storage battery module in a DC mode and transmitting the DC to DC electric equipment. The invention further discloses a charging station. The photovoltaic charging system and the charging station utilize solar energy and secondary batteries, not only provide a convenient charging mode for the DC electric equipment, but also fully utilize stored energy of the secondary batteries.
Description
Technical field
The present invention relates to a kind of photovoltaic charged system and charging station, particularly relate to photovoltaic charged system and charging station that a kind of electrokinetic cell echelon is utilized.
Background technology
In country " the 12 " planning the new forms of energy pure electric automobile as developing direction, new-energy automobile develops and to present good momentum, along with the electric automobile fast development, the charging station that matches with electric automobile is just becoming a kind of new industry.China's electric power resource is in short supply, certainly will will find a kind of novel solution charging electric vehicle way.
Because electric power resource is in short supply, the echelon utilization of electrokinetic cell also will be an important step that improves the comprehensive utilization of energy rate.According to the pertinent regulations of country, the actual capacity of electric powered motor storage battery decline to its nominal capacity 80% after, should eliminate.After the electric automobile large-scale application, the power accumulator of Tao Taiing remains a great riches, can play a significant role aspect the electrical network stored energy application.
Thus, expectation can be found does not a kind ofly increase the electricity consumption burden, can utilize the power accumulator of having eliminated and be convenient to charging system and the charging station of charging electric vehicle.
Summary of the invention
The technical problem to be solved in the present invention is not increase extra electricity consumption burden in order to overcome the defective that electric automobile in the prior art does not have supporting charging station, power accumulator to be not fully utilized after eliminating, to provide a kind of, make the power accumulator of eliminating be fully used, be convenient to photovoltaic charged system and the charging station of electric automobile and other AC electric equipment and direct-flow electricity utilization apparatus charging.
The present invention solves above-mentioned technical problem by following technical proposals:
A kind of photovoltaic charged system, its characteristics are, it comprises: be used for solar energy is converted to electric energy, and this electric energy is converted to solar module, accumulator cell assembly, a DC/DC (DC-DC) circuit, the 2nd DC/DC circuit, a DC/AC (direct current is delivered stream) circuit, the 2nd DC/AC circuit of direct current output, wherein
The one DC/DC circuit is used for utilizing the direct current of this solar module output to be this accumulator cell assembly charging;
The one DC/AC circuit is used for the direct current of this solar module output is converted to alternating current and this alternating current is sent into an AC electric equipment and/or an electrical network, that is to say, the alternating current of conversion gained can directly provide power supply for this AC electric equipment, the generating that also can be connected to the grid, the operating pressure in tradition power plant when alleviating peak of power consumption;
The 2nd DC/AC circuit is used for the direct current of this accumulator cell assembly output is converted to alternating current and this alternating current is sent into this AC electric equipment and/or this electrical network, that is to say, the alternating current of conversion gained can directly provide power supply for this AC electric equipment, the generating that also can be connected to the grid, the operating pressure in tradition power plant when alleviating peak of power consumption;
The 2nd DC/DC circuit is used for direct current to be changed the direct current of this accumulator cell assembly output and will send into a direct current power consumption equipment through the direct current of conversion, and the DC-DC here is to be fit to the direct current that this direct-flow electricity utilization apparatus uses and to think that this direct-flow electricity utilization apparatus provides working power for the direct current with this accumulator cell assembly output converts to;
Wherein, for example illuminator or other life industrial electricity apparatus of this AC electric equipment; This direct-flow electricity utilization apparatus is electric automobile for example, this photovoltaic charged system can utilize the electric energy of solar energy conversion gained and the secondary of accumulator cell assembly to be utilized as charging electric vehicle thus, has taken full advantage of electric power resource under the situation that or else increases the weight of to bear in traditional power plant.
Preferably, this photovoltaic charged system also comprises a supervising device, is used for below the monitoring one or more: the dc voltage of this solar module output, direct current electric current, the electric weight of this accumulator cell assembly, the electric network information of this electrical network.The user can carry out assigning of control command by the monitored results of supervising device, or carries out the setting of program in advance, assigns control command when monitored results satisfies a certain condition automatically.
Preferably, this photovoltaic charged system also comprises a control device, is used for showing that at this electric network information line voltage is crossed low or net capacity is enabled a DC/AC circuit and/or the 2nd DC/AC circuit when not enough so that this alternating current is sent into this electrical network.Be that power consumption is bigger, when the output in traditional power plant can't be satisfied the electricity consumption needs, this photovoltaic charged system converts the output of solar module and accumulator cell assembly to alternating current output and directly is connected to the grid with the electricity consumption situation of keeping tensions down.
Preferably, this control device also is used for this accumulator cell assembly being discharged to realize to the adjusting of this electric network active power or the adjusting of reactive power to control the 2nd DC/AC circuit according to this electric network information of gathering.
Preferably, this control device also is used for enabling a DC/AC circuit when this AC electric equipment is activated and/or the 2nd DC/AC circuit thinks that this AC electric equipment provides working power, and/or, this control device also is used for enabling the 2nd DC/DC circuit when this direct-flow electricity utilization apparatus is activated and thinks that this direct-flow electricity utilization apparatus provides working power, perhaps for example to the charging of other direct-flow electricity utilization apparatus such as electric automobile.
Preferably, this control device also is used for enabling a DC/DC circuit to control this solar module to the charging of this accumulator cell assembly when the electric weight of this accumulator cell assembly is lower than a threshold value.
Preferably, this alternating current and this electrical network same frequency, same-phase.
Preferably, this accumulator cell assembly comprises BMS (BATTERY MANAGEMENT SYSTEM, battery management system), BMS is the tie between battery and the user, mainly to liking secondary cell, because it is some shortcomings below secondary cell exists, few as stored energy, the life-span short, problem is used in connection in series-parallel, safety in utilization, battery electric quantity estimation difficulty etc.The performance of battery is that very complicated, dissimilar battery behavior also differs greatly.BMS mainly is exactly in order to improve the utilance of battery, prevents that battery from occurring overcharging and overdischarge, prolongs the useful life of battery, the state of monitoring battery.In addition, this accumulator cell assembly also can comprise charged lithium cells.
Preferably, a DC/AC circuit and the 2nd DC/AC circuit include inverter to finish direct current to the conversion of alternating current.Wherein, above-mentioned DC-DC, the specific implementation that direct current is delivered stream can select suitable DC controller, inverter to realize by those skilled in the art.
The present invention also provides a kind of charging station, and its characteristics are that this charging station comprises aforesaid photovoltaic charged system.Thus, this charging station not only can satisfy the charging needs of direct-flow electricity utilization apparatus such as electric automobile, can also provide working power for AC electric equipment (for example illuminator), in addition, in the bigger period of power consumption, this charging station can also convert the output of solar module and accumulator cell assembly to alternating current and be connected to the grid, even also can utilize the electric energy of this accumulator cell assembly with energy-storage function at night.
Positive progressive effect of the present invention is: photovoltaic charged system of the present invention and charging station have utilized solar energy and secondary cell, the multiple path of DC/AC and DC/DC is provided, the charging modes of providing convenience for direct-flow electricity utilization apparatus such as electric automobile not only, also taken full advantage of the energy storage of solar energy and secondary cell, can generate electricity by way of merging two or more grid systems for AC electric equipment (for example illuminator) provides working power and provides when the power consumption excess load.In addition, this charging station has guaranteed user's electricity consumption from many aspects, and adopts clean energy resource fully, can not cause extra pollution.
Description of drawings
Fig. 1 is the structured flowchart of the photovoltaic charged system of one embodiment of the invention.
Embodiment
Provide preferred embodiment of the present invention below in conjunction with accompanying drawing, to describe technical scheme of the present invention in detail.
With reference to figure 1, photovoltaic charged system of the present invention, comprise: be used for solar energy is converted to electric energy, and the solar module 1 that this electric energy is converted to direct current output (for example, the solar module installed capacity is 10kWp, can realize maximal power tracing), accumulator cell assembly 2 (for example, battery energy storage capacity 40kWh, life-spans 1500 circulation (80%DOD, depth of round, each discharge cycles can be emitted capacity), this accumulator cell assembly also can suck energy for self charging from electrical network, can release energy to electrical network by combining inverter again), the one DC/DC circuit 3, the 2nd DC/DC circuit 4, the one DC/AC circuit 5, the 2nd DC/AC circuit 6, wherein
The one DC/DC circuit 3 is used for utilizing the direct current of this solar module 1 output to be these accumulator cell assembly 2 chargings;
The one DC/AC circuit 5 is used for the direct current of this solar module output is converted to alternating current and this alternating current is sent into an AC electric equipment 7 and/or an electrical network, that is to say, the alternating current of conversion gained can directly provide power supply for this AC electric equipment 7, the generating that also can be connected to the grid, the operating pressure in tradition power plant when alleviating peak of power consumption;
The 2nd DC/AC circuit 6 is used for the direct current of these accumulator cell assembly 2 outputs is converted to alternating current and this alternating current is sent into this AC electric equipment 7 and/or this electrical network, that is to say, the alternating current of conversion gained can directly provide power supply for this AC electric equipment 7, the generating that also can be connected to the grid, the operating pressure in tradition power plant when alleviating peak of power consumption;
The 2nd DC/DC circuit 4 is used for direct current to be changed the direct current of these accumulator cell assembly 2 outputs and will send into a direct current power consumption equipment 8 through the direct current of conversion, the DC-DC here is to convert the direct current of suitable these direct-flow electricity utilization apparatus 8 uses to for these direct-flow electricity utilization apparatus 8 electricity consumptions for the direct current with these accumulator cell assembly 2 outputs, in the present embodiment, this direct-flow electricity utilization apparatus 8 is electric automobile, and it is this charging electric vehicle that the 2nd DC/DC circuit 4 utilizes the electric weight in this accumulator cell assembly 2;
Wherein, for example illuminator or other life industrial electricity apparatus of this AC electric equipment 7; And should be provided for this direct-flow electricity utilization apparatus 8 through the direct current of conversion, this photovoltaic charged system can utilize the electric energy of solar energy conversion gained and the secondary of accumulator cell assembly to be utilized as charging electric vehicle thus, has taken full advantage of electric power resource under the situation that or else increases the weight of to bear in traditional power plant.
In addition, this photovoltaic charged system also comprises a supervising device (not shown), is used for below the monitoring one or more: dc voltage, direct current electric current, the electric weight of this accumulator cell assembly 2, the electric network information of this solar module 1 output.The user can carry out assigning of control command by the monitored results of supervising device, or carries out the setting of program in advance, assigns control command when monitored results satisfies a certain condition automatically, for example: night this accumulator cell assembly 2 carry out inversion discharge; Perhaps cross low or city's capacitance when not enough when line voltage, accumulator cell assembly 2 also discharges to be connected to the grid; Perhaps, need be to this direct-flow electricity utilization apparatus 8 (for example electric automobile) when charging, this accumulator cell assembly 2 discharges that also electric automobile is charged after receiving charging instruction.The object of monitoring is not limited to the above-mentioned part of mentioning.
Control for convenience automatically, this photovoltaic charged system also comprises a control device (not shown), is used for crossing low or net capacity is enabled a DC/AC circuit 5 and/or the 2nd DC/AC circuit 6 when not enough so that this alternating current is sent into this electrical network at line voltage.Be that power consumption is bigger, when the output in traditional power plant can't be satisfied the electricity consumption needs, this photovoltaic charged system converts the output of solar module 1 and accumulator cell assembly 2 to alternating current output and directly is connected to the grid with the electricity consumption situation of keeping tensions down.
In addition, this control device also is used for discharging to realize to the adjusting of this electric network active power or the adjusting of reactive power to control 6 pairs of these accumulator cell assemblies 2 of the 2nd DC/AC circuit according to this electric network information of gathering.
Perhaps, this control device also is used for enabling a DC/AC circuit 5 and/or the 2nd DC/AC circuit 6 when this AC electric equipment 7 is activated, and/or this control device also is used for enabling the 2nd DC/DC circuit 4 with the charging of control to this direct-flow electricity utilization apparatus 8 (for example electric automobile) when this direct-flow electricity utilization apparatus 8 is activated.
In addition, this control device also is used for enabling a DC/DC circuit 3 to control the charging of 1 pair of this accumulator cell assembly 2 of this solar module when the electric weight of this accumulator cell assembly 2 is lower than a threshold value.In addition, this control device can also be coordinated to charge, the power output of battery energy storage, solar module, can realize distributed power supply system (small-scale electric power system, big mains supply system replenishes) control and isolated island detect and guarantee safety, checking breaks away from the possibility from network operation of electrical network.
Wherein, this alternating current and this electrical network same frequency, same-phase.
In addition, this accumulator cell assembly 2 comprises BMS, and this accumulator cell assembly also can comprise charged lithium cells, and this lithium battery can accomplish to charge 40%, SOC (battery energy storage residual capacity) between 20～80% in half an hour), temperature conditions satisfies outdoor low temperature environment.
Specifically, a DC/AC circuit 5 and the 2nd DC/AC circuit 6 include inverter to finish direct current to the conversion of alternating current.Wherein, above-mentioned DC-DC, the specific implementation that direct current is delivered stream can select suitable DC controller, inverter to realize by those skilled in the art.
In addition, the present invention also provides a kind of charging station, comprises aforesaid photovoltaic charged system.Thus, this charging station not only can satisfy the charging needs of direct-flow electricity utilization apparatus such as electric automobile, can also provide working power for AC electric equipment (for example illuminator), in addition, in the bigger period of power consumption, this charging station can also convert the output of solar module and accumulator cell assembly to alternating current and be connected to the grid, even also can utilize the electric energy of this accumulator cell assembly with energy-storage function at night.
Photovoltaic charged system of the present invention and charging station, on the one hand can the newly-increased power load in equilibrium charging station, thereby the mains supply capacity is not constituted new demand, reduce required investment and the construction work of electrical network increase-volume, can perform sufficient technological reserve for " intelligent grid " in future on the one hand in addition.
Though more than described the specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, protection scope of the present invention is limited by appended claims.Those skilled in the art can make numerous variations or modification to these execution modes under the prerequisite that does not deviate from principle of the present invention and essence, but these changes and modification all fall into protection scope of the present invention.
Claims (10)
1. photovoltaic charged system, it is characterized in that, it comprises: be used for solar energy is converted to electric energy, and this electric energy is converted to solar module, accumulator cell assembly, a DC/DC circuit, the 2nd DC/DC circuit, a DC/AC circuit, the 2nd DC/AC circuit of direct current output, wherein
The one DC/DC circuit is used for utilizing the direct current of this solar module output to be this accumulator cell assembly charging;
The one DC/AC circuit is used for the direct current of this solar module output is converted to alternating current and this alternating current is sent into an AC electric equipment and/or an electrical network;
The 2nd DC/AC circuit is used for the direct current of this accumulator cell assembly output is converted to alternating current and this alternating current is sent into this AC electric equipment and/or this electrical network;
The 2nd DC/DC circuit is used for direct current to be changed the direct current of this accumulator cell assembly output and will send into a direct current power consumption equipment through the direct current of conversion.
2. photovoltaic charged system as claimed in claim 1, it is characterized in that, this photovoltaic charged system also comprises a supervising device, is used for below the monitoring one or more: the dc voltage of this solar module output, direct current electric current, the electric weight of this accumulator cell assembly, the electric network information of this electrical network.
3. photovoltaic charged system as claimed in claim 2, it is characterized in that, this photovoltaic charged system also comprises a control device, is used for showing that at this electric network information line voltage is crossed low or net capacity is enabled a DC/AC circuit and/or the 2nd DC/AC circuit when not enough so that this alternating current is sent into this electrical network.
4. photovoltaic charged system as claimed in claim 3, it is characterized in that this control device also is used for controlling the 2nd DC/AC circuit according to this electric network information to be discharged to realize to the adjusting of this electric network active power or the adjusting of reactive power to this accumulator cell assembly.
5. photovoltaic charged system as claimed in claim 3, it is characterized in that, this control device also is used for enabling a DC/AC circuit and/or the 2nd DC/AC circuit when this AC electric equipment is activated, and/or this control device also is used for enabling the 2nd DC/DC circuit when this direct-flow electricity utilization apparatus is activated.
6. photovoltaic charged system as claimed in claim 3 is characterized in that, this control device also is used for enabling a DC/DC circuit to control this solar module to the charging of this accumulator cell assembly when the electric weight of this accumulator cell assembly is lower than a threshold value.
7. as any described photovoltaic charged system among the claim 1-6, it is characterized in that this alternating current and this electrical network same frequency, same-phase.
8. as any described photovoltaic charged system among the claim 1-6, it is characterized in that this accumulator cell assembly comprises BMS, and/or this accumulator cell assembly comprises charged lithium cells.
9. as any described photovoltaic charged system among the claim 1-6, it is characterized in that a DC/AC circuit and the 2nd DC/AC circuit include inverter.
10. a charging station is characterized in that, this charging station comprises as any described photovoltaic charged system among the claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100143063A CN103208825A (en) | 2012-01-17 | 2012-01-17 | Photovoltaic charging system and charging station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100143063A CN103208825A (en) | 2012-01-17 | 2012-01-17 | Photovoltaic charging system and charging station |
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| CN103208825A true CN103208825A (en) | 2013-07-17 |
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| CN2012100143063A Pending CN103208825A (en) | 2012-01-17 | 2012-01-17 | Photovoltaic charging system and charging station |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108248419A (en) * | 2017-12-18 | 2018-07-06 | 蔚来汽车有限公司 | Energy storage battery charging and discharging system and method and related equipment |
| CN111464672A (en) * | 2019-01-18 | 2020-07-28 | 青岛海信移动通信技术股份有限公司 | Electronic equipment and charging method thereof |
| CN111913110A (en) * | 2019-05-10 | 2020-11-10 | 维谛技术有限公司 | Commercial power battery configuration evaluation method and system |
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2012
- 2012-01-17 CN CN2012100143063A patent/CN103208825A/en active Pending
Patent Citations (4)
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| CN101534590A (en) * | 2009-04-16 | 2009-09-16 | 陆启升 | Solar energy illuminating control power supply |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108248419A (en) * | 2017-12-18 | 2018-07-06 | 蔚来汽车有限公司 | Energy storage battery charging and discharging system and method and related equipment |
| CN111464672A (en) * | 2019-01-18 | 2020-07-28 | 青岛海信移动通信技术股份有限公司 | Electronic equipment and charging method thereof |
| CN111913110A (en) * | 2019-05-10 | 2020-11-10 | 维谛技术有限公司 | Commercial power battery configuration evaluation method and system |
| CN111913110B (en) * | 2019-05-10 | 2023-03-14 | 维谛技术有限公司 | Commercial power battery configuration evaluation method and system |
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Application publication date: 20130717 |