CN103855734A - Solar-energy independent power-supply system - Google Patents
Solar-energy independent power-supply system Download PDFInfo
- Publication number
- CN103855734A CN103855734A CN201210500524.8A CN201210500524A CN103855734A CN 103855734 A CN103855734 A CN 103855734A CN 201210500524 A CN201210500524 A CN 201210500524A CN 103855734 A CN103855734 A CN 103855734A
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- CN
- China
- Prior art keywords
- energy
- solar
- inverter
- mppt function
- power supply
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004146 energy storage Methods 0.000 claims abstract description 15
- 239000005955 Ferric phosphate Substances 0.000 claims description 5
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 5
- 229940032958 ferric phosphate Drugs 0.000 claims description 5
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical group [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 claims description 5
- 229910000399 iron(III) phosphate Inorganic materials 0.000 claims description 5
- 229910052744 lithium Inorganic materials 0.000 claims description 5
- 229910001416 lithium ion Inorganic materials 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 3
- 210000004027 cell Anatomy 0.000 abstract 5
- 210000000352 storage cell Anatomy 0.000 abstract 2
- 230000005611 electricity Effects 0.000 abstract 1
- 239000002253 acid Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
Images
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Photovoltaic Devices (AREA)
Abstract
Disclosed is a solar-energy independent power-supply system which includes a solar cell module, an MPPT function DC/DC, an energy storage cell, an inverter DC-AC and a DC bus. Output of the solar cell module is connected with input of the MPPT function DC/DC. Output of the MPPT function DC/DC realizes electrical connection with the energy storage cell and the inverter DC-AC through the DC bus. The solar-energy independent power-supply system adopts the MPPT function DC/DC so that a maximum power point of the solar cell module can be tracked in a real-time manner and solar energy is obtained to the largest degree and thus the utilization rate of the solar energy is improved. When power is supplied to a load through the inverter DC/AC, the MPPT function DC/DC is capable of tracking the maximum power point of the solar cell module in a real-time manner so that more electrical energy which is converted directly from solar energy is used and thus discharged electricity quantity of the cell is reduced.
Description
Technical field
The present invention relates to photovoltaic generation, relate in particular to a kind of solar energy independent electric power supply.
Background technology
Solar energy independent electric power supply can be applicable to when public electric wire net is difficult to the illumination in the place covering, nomadic area and provides power supply for small-sized DC electrical equipment and uses, and is used as emergency power supply while being applicable to special circumstances simultaneously.But solar energy independent electric power supply generally adopts photovoltaic module, lead acid accumulator and charging-discharging controller composition at present, can not meet the instructions for use day by day improving aspect solar energy utilization ratio, battery performance and product weight.
Summary of the invention
Object of the present invention, the problem existing in order to solve above-mentioned prior art exactly, provides a kind of solar energy independent electric power supply.
In order to achieve the above object, the present invention has adopted following technical scheme: a kind of solar energy independent electric power supply, comprises solar module, MPPT function DC/DC, energy-storage battery, inverter DC-AC and DC bus; The output of solar module connects the input of MPPT function DC/DC, and the output of MPPT function DC/DC realizes electric being connected to each other with energy-storage battery and inverter DC-AC respectively by DC bus.
Also comprise converter DC-DC, the input of this converter DC-DC connects DC bus.
Described energy-storage battery is ferric phosphate lithium cell group or lithium ion battery group, is provided with protective circuit in battery pack.
Described MPPT function DC/DC adopts Kang Weiteji DiDi300.
Described inverter DC-AC adopts easily volt electric energy inverter SI200-212.
The present invention, owing to having adopted above technical scheme, has following advantage and disadvantage:
1, adopt MPPT function DC/DC, the maximum power point of real-time tracking solar module, at utmost obtains solar energy, improves the utilance of solar energy.
2,, in the battery charging stage, the maximum power point of MPPT function DC/DC energy real-time tracking solar module, charges to battery fast.
3, in the time powering to the load by inverter DC/AC, the maximum power point of MPPT function DC/DC energy real-time tracking solar module, the electric energy that more use solar energy is directly changed, reduces battery discharge electric weight.
4, this power-supply system adopts the long-life high density energy-storage batteries such as ferric phosphate lithium cell or lithium ion battery, and weight, the volume of power supply significantly reduce.
Brief description of the drawings
Fig. 1 is the structured flowchart of solar energy independent electric power supply of the present invention.
Embodiment
Referring to Fig. 1, solar energy independent electric power supply of the present invention, comprises solar module 1, MPPT function DC/DC2, energy-storage battery 3, inverter DC-AC4 and DC bus 5.The output of solar module 1 connects the input of MPPT function DC/DC2, and the output of MPPT function DC/DC2 realizes electric being connected to each other with energy-storage battery 3 and inverter DC-AC4 respectively by DC bus 5.
Also comprise converter DC-DC6, the input of this converter DC-DC6 connects DC bus 5.
Energy-storage battery in the present invention is ferric phosphate lithium cell group or lithium ion battery group, is provided with protective circuit in battery pack.
MPPT function DC/DC in the present invention adopts Kang Weiteji DiDi300.
Inverter DC-AC in the present invention adopts easily volt electric energy inverter SI200-212.
In the present invention, solar module 1 is the main generating source of power supply, and output voltage and the electric current of solar module 1 has " knee type curve " relation, and its output is affected by temperature, irradiance etc.There is power maximum functional point in the power output of solar module 1 under specified criteria, exports electric energy maximum in the time of this work.MPPT function DC/DC2 is the electrical energy transformer with tracking solar battery component 1 maximum power point function.MPPT function DC/DC2 adjusts the output instantaneous power of solar module 1 by every moment internal control, find maximum power point and substantially maintain the work of maximum power point place, make the output instantaneous power of solar module 1 the highest, the electric energy of final output is maximum.The electric energy of MPPT function DC/DC output is delivered to energy-storage battery 3 and is stored, and delivers to inverter DC-AC4 for load.Energy-storage battery 3 is the long-life such as ferric phosphate lithium cell or the lithium ion battery high density energy-storage batteries that charging be there is no to strict restriction, can all store obtaining in real time photovoltaic electric energy.Power supply can configure converter DC/DC6 for DC load, also DC load directly can be connected to DC bus 5 power takings.
Claims (5)
1. a solar energy independent electric power supply, is characterized in that: comprise solar module, MPPT function DC/DC, energy-storage battery, inverter DC-AC and DC bus; The output of solar module connects the input of MPPT function DC/DC, and the output of MPPT function DC/DC realizes electric being connected to each other with energy-storage battery and inverter DC-AC respectively by DC bus.
2. solar energy independent electric power supply according to claim 1, is characterized in that: also comprise converter DC-DC, the input of this converter DC-DC connects DC bus.
3. solar energy independent electric power supply according to claim 1, is characterized in that: described energy-storage battery is ferric phosphate lithium cell group or lithium ion battery group, is provided with protective circuit in battery pack.
4. solar energy independent electric power supply according to claim 1, is characterized in that: described MPPT function DC/DC adopts Kang Weiteji DiDi300.
5. solar energy independent electric power supply according to claim 1, is characterized in that: described inverter DC-AC adopts easily volt electric energy inverter SI200-212.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210500524.8A CN103855734A (en) | 2012-11-29 | 2012-11-29 | Solar-energy independent power-supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210500524.8A CN103855734A (en) | 2012-11-29 | 2012-11-29 | Solar-energy independent power-supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103855734A true CN103855734A (en) | 2014-06-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210500524.8A Pending CN103855734A (en) | 2012-11-29 | 2012-11-29 | Solar-energy independent power-supply system |
Country Status (1)
| Country | Link |
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| CN (1) | CN103855734A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105207341A (en) * | 2015-09-17 | 2015-12-30 | 同济大学 | Grid-connected and off-grid type photovoltaic energy-storage charging pile control device and method |
| CN106241571A (en) * | 2016-10-12 | 2016-12-21 | 莆田学院 | Lift car wireless power and communicator and method of supplying power to thereof |
| CN115065091A (en) * | 2022-05-30 | 2022-09-16 | 金华市华强电子科技股份有限公司 | Portable power generation and energy storage control device and control method |
| CN116488222A (en) * | 2023-05-06 | 2023-07-25 | 江苏阿诗特能源科技有限公司 | An energy storage integrated cabinet |
-
2012
- 2012-11-29 CN CN201210500524.8A patent/CN103855734A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105207341A (en) * | 2015-09-17 | 2015-12-30 | 同济大学 | Grid-connected and off-grid type photovoltaic energy-storage charging pile control device and method |
| CN106241571A (en) * | 2016-10-12 | 2016-12-21 | 莆田学院 | Lift car wireless power and communicator and method of supplying power to thereof |
| CN115065091A (en) * | 2022-05-30 | 2022-09-16 | 金华市华强电子科技股份有限公司 | Portable power generation and energy storage control device and control method |
| CN115065091B (en) * | 2022-05-30 | 2024-03-15 | 金华市华强电子科技股份有限公司 | Portable power generation and energy storage control device and control method |
| CN116488222A (en) * | 2023-05-06 | 2023-07-25 | 江苏阿诗特能源科技有限公司 | An energy storage integrated cabinet |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140611 |