CN103094977A - Photovoltaic distribution system - Google Patents
Photovoltaic distribution system Download PDFInfo
- Publication number
- CN103094977A CN103094977A CN2013100598788A CN201310059878A CN103094977A CN 103094977 A CN103094977 A CN 103094977A CN 2013100598788 A CN2013100598788 A CN 2013100598788A CN 201310059878 A CN201310059878 A CN 201310059878A CN 103094977 A CN103094977 A CN 103094977A
- Authority
- CN
- China
- Prior art keywords
- photovoltaic
- circuit
- battery panel
- distribution system
- switch
- Prior art date
- 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
Images
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
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a photovoltaic distribution system comprising a group of photovoltaic cell boards, a storage battery and a control device. The control device comprises a serial-parallel switching circuit used for switching between a parallel-connection state of output charging and a serial-connection state of output discharging of the photovoltaic cell boards, and a detection device used for detecting electric quantity of the storage battery so that when the detection value is smaller than a preset value, the system is switched to be on the parallel-connection state to charge the storage battery. The photovoltaic distribution system can effectively improve the photovoltaic utilization rate.
Description
Technical field
The present invention relates to a kind of photovoltaic application equipment, main application is the occasion of family or other small-scale photovoltaic generations, belongs to the photovoltaic of independent operating.
Background technology
Photovoltaic (PV or photovoltaic) is the abbreviation of solar photovoltaic generation system (photovoltaic power system).Be a kind of photovoltaic effect of utilizing the solar cell semi-conducting material, solar radiation can directly be converted to a kind of new power generating system of electric energy, independent operating is arranged and the dual mode that is incorporated into the power networks.
Known, the photovoltaic panel assembly is that a kind of exposure just can produce galvanic Blast Furnace Top Gas Recovery Turbine Unit (TRT) in the sun, is comprised of the thin body solid photovoltaic cell of almost all making with semiconductor material (for example silicon).Owing to there is no movable part, therefore can long-time operation and can not cause any loss.Simple photovoltaic cell can be wrist-watch and calculator provides the energy, and more complicated photovoltaic system can be the house illumination is provided, and is mains supply.
The photovoltaic of independent operating is not simple cell panel of use many times, is that a Battery pack plate series connection is used in the time of more, and use principle and application all are very limited.
And present most photovoltaic generating system, the photovoltaic generating system that comprises independent operating becomes the direct current that sends into the backward outer output of alternating current by inverter, both increased the kwh loss of conversion links in this process, increased again the input of generating equipment, this is difficult to bear concerning the photovoltaic generating system that reduces by every means cost of electricity-generating, raising generating efficiency.
Summary of the invention
Therefore, the object of the invention is to effectively to improve the photovoltaic distribution system of photovoltaic utilance, be used for the photovoltaic of independent operating.
The technical solution used in the present invention is:
A kind of photovoltaic distribution system, comprise one group of photovoltaic battery panel, also comprise storage battery and control device, wherein said control device comprises serial and parallel switching circuit, be used for the state in parallel of this group photovoltaic battery panel output charging and the switching of the series connection of output electricity consumption, and comprise the checkout gear for detection of accumulator electric-quantity, during lower than set point, to switch to state in parallel to charge in batteries at detected value.
Can find out from such scheme, distinguish over and conventional pass through series system and adopt inverting to drive the general application of load, the present invention adopt the mode of connection in series-parallel conversion and in conjunction with storage battery to improve the photovoltaic utilance.The voltage at the battery pack two ends of series connection equal all cell panels voltage and, and the driving voltage of battery pack in parallel is the output voltage (the consistent cell panel of employing output voltage that requires in parallel) of monoblock battery plate, thereby, namely state in parallel provides load supplying when the relatively high pressure state, improve voltage level, reduce line loss.And when the relatively low pressure state, accordingly, in the certain situation of power, electric current increases, can be to completing quick charge, thus the impact on other loads reduces when battery state of charge.On the other hand, obviously photovoltaic battery panel is mainly used in the generating on daytime, and drive load by storage battery evening, and storage battery is in driving side, and it is shorter that coupling connects the circuit of photovoltaic, and line loss can be ignored.Thereby, according to such scheme, eliminated the loss that inversion brings, directly adopt series-parallel system that driving voltage is provided, greatly improved the utilance of the energy.
Above-mentioned photovoltaic distribution system, the circuit of described control device output electricity consumption has branched, accordingly, this control device also is furnished with the transducer that uses state for detection of power circuit not, with when the higher priority power circuit is in the use state, and always supply electric weight when always making power consumption, cut-off low priority power circuit.
Above-mentioned photovoltaic distribution system is used for the circuit of charge in batteries is contained hand switch.
Above-mentioned photovoltaic distribution system also is furnished with the switch of incoming transport electrical network, with when this system's gross power is not enough, and the access external power supply.
above-mentioned photovoltaic distribution system, described commutation circuit is switching circuit, except the head and the tail photovoltaic battery panel, the a pair of output cable one of each photovoltaic battery panel is furnished with the change over switch that connects main circuit and adjacent photovoltaic cell plate for conversion, another is provided with the dynamic circuit breaker switch that is connected in main circuit, one cable of head and the tail photovoltaic battery panel is provided with the dynamic circuit breaker switch that connects corresponding main circuit, another piece one cable coupling is provided with change over switch, thereby when described series connection, by change over switch, photovoltaic battery panel is connected in turn, and by the access of photovoltaic battery panel end to end main circuit.
Above-mentioned photovoltaic distribution system, affiliated photovoltaic battery panel number be 8.
Description of drawings
Fig. 1 is according to a kind of connection in series-parallel transformational structure schematic diagram of the present invention.
Fig. 2 is a kind of structure principle chart of photovoltaic distribution system.
Embodiment
Be to be understood that, most household electrical appliance all can DC driven, as electric heater, electric furnace, light fixture, TV etc., such as the such equipment of household PC, transformation also can be used direct current a little, and the main components on computer is all DC driven after all.Therefore, DC driven is provided is feasible to the photovoltaic of simple family expenses or general independent operating.
The purpose of an aspect is by the dynamic combined to many groups photovoltaic battery panel circuit, in the situation that do not use inverter, realize the maximization that photovoltaic generation utilizes, thereby reduce power consumption and fund input that inverter causes, and the electric energy reasonable distribution that photovoltaic plant is sent, take full advantage of, reduce as far as possible power station idle running.
Use simultaneously as the unit by the polylith photovoltaic battery panel or take system, formation parallel with one another system group is adjusted photovoltaic electric energy more than needed mutually, realizes the maximization that photovoltaic utilizes.
The purpose of an aspect is the demand for different electrical appliances and electrical storage device, sets respectively the electricity consumption priority, and automatic transport is organized different electric currents and voltage more.
Principle: according to the voltage and current of every photovoltaic battery panel, according to need for electricity, rely on respectively system, automatically take the mode of serial or parallel connection, match suitable dc power supply parameter, can also carry out the adaptive of corresponding power consumption equipment by the dividing potential drop mode at output.Another aspect guarantees that according to the rank of electricity consumption priority at first the higher electric equipment of level of priority can normally use.
Photovoltaic distribution system as shown in Figure 2, its load such as LED lamp, television set, personal computer, electric heater become output electricity consumption side, and storage battery consist of the power supply under a stable condition, as evening, not energy storage side.
It comprises one group of photovoltaic battery panel, the reorganization photovoltaic battery panel distributes by the photovoltaic intelligent distribution system in Fig. 2, reality is the control section of light powder distribution system, control device namely, here the control device part is also brought in the test section, as detect the transducer of accumulator electric-quantity, the sensor whether power circuit has electric current to flow through.
Fig. 1 has provided a kind of concrete switching construction that purely is made of switch, and himself can overall package be configured to a switch module.The switching circuit that also can configure other is realized series-parallel switching.
Its emphasis is series-parallel switching, which kind of state no matter, and its power output is substantially constant, what change is output circuit and output voltage, for different application, uses different standards, improve matching, thereby reduce the extra energy consumption that the conversion under single-mode causes.Household electrical appliance can be driven by direct voltage mostly, and therefore, the inventor thinks, inversion is drawn a snake and add feet to it in some cases, without real value.
The starting point that coupling is together in series each photovoltaic battery panel or be together in parallel, the configuration serial and parallel switching circuit is used for the state in parallel of this group photovoltaic battery panel output charging and the switching of the series connection of output electricity consumption.
Daytime, power consumption was smaller, be used for energy storage, thereby this conversion frequency is not very high, certainly, and in different application, the demand of electricity consumption side is exported in possible load on daytime in other words can be larger, which kind of situation no matter is provided for detecting the checkout gear of accumulator electric-quantity, with at detected value during lower than set point, switch to state in parallel to charge in batteries, make storage battery be in a kind of relative state that can reliably be used even more important.
But should be appreciated that based on this storage battery has certain self-holding ability, even if daytime, the load electricity consumption was many, set suitable switching state, to the applicable too much influence that also do not have of load.Mated, this paper lays particular emphasis on and adopts state in parallel that storage battery is charged, low-voltage, high-current, and charging rate is faster.On the other hand, the charging voltage of storage battery is generally all lower, thereby adopts low-pressure state to have better matching.
Storage battery also can outwards provide driving force when charging, but does not preferably adopt this mode, when electricity consumption is unstable, easily makes the storage battery heating serious.
Thereby in some applications, driving power as a whole can add AC network, when being charge in batteries, can use the AC network power supply.
Preferably, the circuit of described control device output electricity consumption has branched, accordingly, this control device also is furnished with the transducer that uses state for detection of power circuit not, and the transducer here mainly adopts current sensor, also can adopt voltage sensor, a kind of state that is using only is provided, and these two values are more direct, thereby when the higher priority power circuit is in the use state, and always supply electric weight when always making power consumption, cut-off low priority power circuit.
For example, the lighting apparatus under certain condition is because needs use at any time, so the superlative degree of being made as.Next is computer and television set, because needs often use, so be made as the second level.Storage battery can be included the priority ranks in, be also can electricity consumption when guaranteeing that photovoltaic system does not generate electricity essential equipment, can be made as the third level.Electric heater is because there is larger hot memory function, and when the electricity consumption impact is little, so it can be made as afterbody.The circuit of each priority arranges transducer at a trackside just can gather its state.
Be to be understood that, the priority height does not represent that the high meeting of priority masks the applicable of the low electric equipment of priority, lighting apparatus as said the first priority, when photovoltaic is worked, exactly daytime, its use is also use under certain condition, thereby its electric current and voltage fluctuation on whole system can not produce significant impact usually, though rank is high, usually can not affect the use of second, third priority power consumption equipment.
In some applications, be used for the circuit of charge in batteries is arranged hand switch, force to disconnect being connected of storage battery and system main circuit, thinking the user when needing to force to guarantee other power consumption equipments work, the impact of elimination storage battery.
In structure shown in Figure 1, described commutation circuit is switching circuit, except the head and the tail photovoltaic battery panel, photovoltaic battery panel as highest and lowest in figure, namely PV1 and PVn, wherein n is natural number, obviously coupling is the piece number of photovoltaic battery panel in the photovoltaic battery panel group.Use the switches set of interlock in figure, obviously also can be a plurality of switches of a signal driver, KA representation conversion switch, K represents regular tap, adopt the dynamic circuit breaker switch here, referring to PV1 and PV2, during the coil of signal driver (square frame in figure above dotted line) action, K1 disconnects, KA1 is transformed into the PV2 side terminal of K1 and is connected, certainly, so expression, do not represent both common terminals in the drawings, by that analogy, just completed state in parallel to the conversion of series connection, Fig. 1 is actual, and what represent is state in parallel, is expressed as series connection after action.
Example on foundation, on principle, structure shown in Figure 1 has following characteristics so:
Except the head and the tail photovoltaic battery panel, the a pair of output cable one of each photovoltaic battery panel is furnished with the change over switch that connects main circuit and adjacent photovoltaic cell plate for conversion, another is provided with the dynamic circuit breaker switch that is connected in main circuit, one cable of head and the tail photovoltaic battery panel is provided with the dynamic circuit breaker switch that connects corresponding main circuit, another piece one cable coupling is provided with change over switch, thereby when described series connection, by change over switch, photovoltaic battery panel is connected in turn, and pass through photovoltaic battery panel access main circuit end to end.
Here main circuit is that the unit that is different from photovoltaic battery panel is distinguished, and those skilled in the art should have this clearly and understand by the reading to foregoing.
The output voltage of every photovoltaic battery panel is generally 12 volts.Find through research, the application of the general household electrical appliance of coupling, described photovoltaic battery panel number be 8, to the 96V output voltage of series connection should be arranged, can be in a kind of energy-conservation state.
For being conducive to understand, according to foregoing, with reference to Figure of description 2, when a kind of task of intelligent configuration system generates electricity when photovoltaic system, intelligent distribution system is carried corresponding direct current according to the priority level of each electrical appliance, and its dump energy is delivered to electric heater.When the temperature of electric heater reaches the highest set point, electric energy more than needed laterally outputs to other and uses intelligent dispensing system.When the native system energy output is not enough, can borrow electricity to other system, when other system is for public use without electric weight more than needed, intelligence system will gradually reduce amount of power supply, until photovoltaic generating system quits work.With required electrical appliance (do not comprise storage battery) be transferred to public electric wire net when needing electricity consumption this moment.
Claims (6)
1. photovoltaic distribution system, comprise one group of photovoltaic battery panel, it is characterized in that, also comprise storage battery and control device, wherein said control device comprises serial and parallel switching circuit, is used for the state in parallel of this group photovoltaic battery panel output charging and the switching of the series connection of output electricity consumption, and comprises the checkout gear for detection of accumulator electric-quantity, during lower than set point, to switch to state in parallel to charge in batteries at detected value.
2. photovoltaic distribution system according to claim 1, it is characterized in that, the circuit of described control device output electricity consumption has branched, accordingly, this control device also is furnished with the transducer that uses state for detection of power circuit not, with when the higher priority power circuit is in the use state, and always supply electric weight when always making power consumption, cut-off low priority power circuit.
3. photovoltaic distribution system according to claim 1 and 2, is characterized in that, is used for the circuit of charge in batteries is contained hand switch.
4. photovoltaic distribution system according to claim 1 and 2, is characterized in that, also is furnished with the switch of incoming transport electrical network, with when this system's gross power is not enough, and the access external power supply.
5. photovoltaic distribution system according to claim 1 and 2, it is characterized in that, described commutation circuit is switching circuit, except the head and the tail photovoltaic battery panel, the a pair of output cable one of each photovoltaic battery panel is furnished with the change over switch that connects main circuit and adjacent photovoltaic cell plate for conversion, another is provided with the dynamic circuit breaker switch that is connected in main circuit, one cable of head and the tail photovoltaic battery panel is provided with the dynamic circuit breaker switch that connects corresponding main circuit, another piece one cable coupling is provided with change over switch, thereby when described series connection, by change over switch, photovoltaic battery panel is connected in turn, and by the access of photovoltaic battery panel end to end main circuit.
6. photovoltaic distribution system according to claim 1, is characterized in that, the number of described photovoltaic battery panel is 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100598788A CN103094977A (en) | 2013-02-26 | 2013-02-26 | Photovoltaic distribution system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100598788A CN103094977A (en) | 2013-02-26 | 2013-02-26 | Photovoltaic distribution system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103094977A true CN103094977A (en) | 2013-05-08 |
Family
ID=48207257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100598788A Pending CN103094977A (en) | 2013-02-26 | 2013-02-26 | Photovoltaic distribution system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103094977A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108901095A (en) * | 2018-06-01 | 2018-11-27 | 刘志强 | A kind of multistage photovoltaic electromagnetic induction control heating means and its application |
| CN110061556A (en) * | 2018-01-18 | 2019-07-26 | 索尔特克可再生能源有限公司 | The photovoltaic system with auxiliary charging module for producing electricl energy |
| CN114172255A (en) * | 2021-12-10 | 2022-03-11 | 珠海格力电器股份有限公司 | Power supply system, power supply method, electronic equipment and storage medium |
| CN119362661A (en) * | 2024-12-25 | 2025-01-24 | 大恒能源股份有限公司 | Photovoltaic module wiring device and photovoltaic system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1138756A (en) * | 1995-06-22 | 1996-12-25 | 沃达株式会社 | Solar cell system |
| CN2566533Y (en) * | 2002-07-30 | 2003-08-13 | 代辉 | Portable multifunctional solar power supply device |
| CN102195312A (en) * | 2010-03-11 | 2011-09-21 | 三洋电机株式会社 | A battery system |
| CN102611176A (en) * | 2012-03-19 | 2012-07-25 | 德清勃朗特能源科技有限公司 | Storage battery charging device with restoration and maintenance functions |
| CN202513673U (en) * | 2012-03-27 | 2012-10-31 | 宋旭 | Intelligent electrical load quantifying device and electric equipment control system |
| CN203193363U (en) * | 2013-02-26 | 2013-09-11 | 张捷英 | Photovoltaic distribution system |
-
2013
- 2013-02-26 CN CN2013100598788A patent/CN103094977A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1138756A (en) * | 1995-06-22 | 1996-12-25 | 沃达株式会社 | Solar cell system |
| CN2566533Y (en) * | 2002-07-30 | 2003-08-13 | 代辉 | Portable multifunctional solar power supply device |
| CN102195312A (en) * | 2010-03-11 | 2011-09-21 | 三洋电机株式会社 | A battery system |
| CN102611176A (en) * | 2012-03-19 | 2012-07-25 | 德清勃朗特能源科技有限公司 | Storage battery charging device with restoration and maintenance functions |
| CN202513673U (en) * | 2012-03-27 | 2012-10-31 | 宋旭 | Intelligent electrical load quantifying device and electric equipment control system |
| CN203193363U (en) * | 2013-02-26 | 2013-09-11 | 张捷英 | Photovoltaic distribution system |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110061556A (en) * | 2018-01-18 | 2019-07-26 | 索尔特克可再生能源有限公司 | The photovoltaic system with auxiliary charging module for producing electricl energy |
| CN110061556B (en) * | 2018-01-18 | 2022-07-08 | 索尔特克可再生能源有限公司 | Photovoltaic system with auxiliary charging module for generating electrical energy |
| CN108901095A (en) * | 2018-06-01 | 2018-11-27 | 刘志强 | A kind of multistage photovoltaic electromagnetic induction control heating means and its application |
| CN108901095B (en) * | 2018-06-01 | 2021-12-10 | 刘志强 | Multistage photovoltaic electromagnetic induction control heating method and application thereof |
| CN114172255A (en) * | 2021-12-10 | 2022-03-11 | 珠海格力电器股份有限公司 | Power supply system, power supply method, electronic equipment and storage medium |
| CN114172255B (en) * | 2021-12-10 | 2023-12-08 | 珠海格力电器股份有限公司 | A power supply system, power supply method, electronic equipment and storage medium |
| CN119362661A (en) * | 2024-12-25 | 2025-01-24 | 大恒能源股份有限公司 | Photovoltaic module wiring device and photovoltaic system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES2626836T3 (en) | Method and apparatus for controlling a hybrid power system | |
| KR101094002B1 (en) | Power converter | |
| KR101147206B1 (en) | Grid connected power storage system and integration controller thereof | |
| CN103633727A (en) | Hybrid electric photovoltaic accumulation system inversion control all-in-one machine | |
| US10284115B2 (en) | Inverter system | |
| CN110138014A (en) | The integrated solar power generation subsystem of grid-connected off-network and system | |
| CN201830009U (en) | Household solar emergency power supply system | |
| CN102882233A (en) | Medium-voltage distribution type maximum power point tracking (MPPT) large-power photovoltaic grid-connected power station | |
| CN103094977A (en) | Photovoltaic distribution system | |
| KR20150085227A (en) | The control device and method for Energy Storage System | |
| CN203590148U (en) | Intelligent solar photovoltaic module junction box | |
| CN103337868A (en) | Method and device for inhibiting photovoltaic generation output power fluctuation | |
| US20180083453A1 (en) | Power converting module, power generating system, and control method thereof | |
| CN203859575U (en) | Reverse control integrated machine of hybrid power photovoltaic energy-storage system | |
| CN106602605A (en) | Photovoltaic array maximum power point tracking control system and photovoltaic air conditioning system | |
| CN202134923U (en) | Deep charging and discharging type battery energy storage paralleling device | |
| CN107394805A (en) | Microgrid Stabilizer | |
| CN212969072U (en) | Isolated microgrid integrated device containing energy storage and distributed energy | |
| CN203193363U (en) | Photovoltaic distribution system | |
| CN101291069A (en) | A photovoltaic grid-connected power generation system capable of online expansion | |
| CN112838608A (en) | an energy storage system | |
| GB2541431A (en) | On-grid battery storage system | |
| CN103618378A (en) | Electric-oil and photovoltaic-power complementary control inverter power supply | |
| KR101737970B1 (en) | Hybrid distributing board | |
| CN106532966A (en) | Renewable energy storage system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130508 |