CN108233520A - A kind of photovoltaic generation electric storage device - Google Patents
A kind of photovoltaic generation electric storage device Download PDFInfo
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- CN108233520A CN108233520A CN201810135434.0A CN201810135434A CN108233520A CN 108233520 A CN108233520 A CN 108233520A CN 201810135434 A CN201810135434 A CN 201810135434A CN 108233520 A CN108233520 A CN 108233520A
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- 238000001514 detection method Methods 0.000 claims abstract description 26
- 230000003750 conditioning effect Effects 0.000 claims abstract description 23
- 230000005611 electricity Effects 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 5
- 239000003990 capacitor Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 14
- 238000007600 charging Methods 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical group [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
- H02M3/1582—Buck-boost converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/20—Charging or discharging characterised by the power electronics converter
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of photovoltaic generation electric storage devices, the photovoltaic generation electric storage device includes solar cell module, single battery, Buck circuits, Boost circuit, battery protecting circuit, for detecting whether there is the detection circuit of sunlight, controller, signal conditioning circuit and display unit, the output terminal of the solar cell module is connect with the input terminal of the Buck circuits, on the one hand the output terminal of the Buck circuits is connect by the battery protecting circuit with the single battery, still further aspect is connect by the Boost circuit with the display unit, the signal conditioning circuit and the Buck circuits, Boost circuit, battery protecting circuit, controller, detection circuit is electrically connected.Photovoltaic generation electric storage device using the present invention can improve the service life that circulating battery uses, simultaneously but also the device can use the 18V solar cell modules of standard, in addition the constant current driving of Boost circuit is integrated, the configuration of the driving circuit of display unit can be reduced, so as to reduce the cost of photovoltaic generation electric storage device.
Description
Technical field
The present invention relates to photovoltaic generation storing up electricity field more particularly to a kind of photovoltaic generation electric storage devices of single battery.
Background technology
Solar power generation is a kind of clean energy resource, but photovoltaic generation has time restriction, needs to increase battery energy storage, just
It is used in staggering the time.Small-sized solar energy storage system is mostly used for the energy supply of street lamp, non-Electric region at present, and solving no alternating current should
The problem of with the power generation under scene and storing up electricity.Early stage in the market using lead-acid battery energy storage mode it is more, but lead-acid battery because
The shortcomings that it is not environmentally, short life and maintenance cost are high is gradually substituted by lithium battery.
Low profile photovoltaic lithium battery integrated power generation electric storage device in the market a kind of common scheme be using 18V photovoltaic panels,
4 series lithium battery energy storage are accessed by photovoltaic controller and battery management system, then exports the 12V constant voltage sources of constant pressure and is given to LED
Lamp cap.Due to being connected using multiple single batteries, because temperature is inconsistent, portfolio effect is bad, capacity after leading to battery in groups
Attenuation ratio is very fast, and battery life is more much lower than the single battery service life, and due to going here and there more after, voltage is higher, in certain visitor
In the case that family is for electricity demanding, low capacity single battery can only be selected, battery cost is higher.
Invention content
Based on this, to solve the above-mentioned technical problem in traditional technology, spy proposes a kind of photovoltaic generation electric storage device.
A kind of photovoltaic generation electric storage device, including solar cell module, single battery, charge-discharge control circuit, with
And for detecting whether there is the detection circuit of sunlight, the solar cell module, single battery and detection circuit with
The charge-discharge control circuit electrical connection.
Further, the charge-discharge control circuit includes Buck circuits, Boost circuit, the input of the Buck circuits
End is connect with the solar cell module, and the Boost circuit is electrically connected to output terminal and the load of the Buck circuits
Between；
Further, the charge-discharge control circuit further includes battery protecting circuit, the battery protecting circuit electrical connection
Between the output terminal and the single battery of the Buck circuits.
Further, the charge-discharge control circuit further includes controller, signal conditioning circuit, the signal conditioning circuit
It is electrically connected with the controller, Buck circuits, Boost circuit, battery protecting circuit and detection circuit, the signal condition electricity
Road between the controller and the Buck circuits, Boost circuit, battery protecting circuit, detection circuit signal into
Row acquisition, conversion and transmission.
Further, the Buck circuits include first switch circuit, second switch circuit, the first inductance, the one or two pole
Pipe, the first capacitance, the first switch circuit are connected with the second switch circuit, first inductance and first capacitance
Parallel branch is formed with first diodes in parallel after series connection, the parallel branch is connected in series with second switch circuit.
Further, the battery protecting circuit includes third switching circuit, the 4th switching circuit and overcurrent protector
Part, the over-current protection device, third switching circuit, the 4th switching circuit are sequentially connected in series anode and Buck in single battery
Between the output terminal of circuit.
Further, the Boost circuit includes the second inductance, the 5th switching circuit, the 6th switching circuit, the second capacitance
And first resistor, the 6th switching circuit is in parallel with the 5th switching circuit after connecting with the second capacitance to form branch in parallel
Road, the parallel branch are serially connected between the second inductance and first resistor.
Further, the charge-discharge control circuit further includes telecommunication circuit, and the controller passes through the telecommunication circuit
Monitoring information is sent to other-end equipment.
Further, the single battery is large-capacity single battery or super capacitor.
Further, the load is LED light.
Photovoltaic generation electric storage device using the present invention improves the service life of battery using large-capacity single battery, and can
Directly to use the 18V solar cell modules of standard, design is driven by the constant current for integrating Boost circuit, it is possible to reduce LED
The driving circuit of lamp, so as to reduce the design cost of solar energy power generating electric storage device.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Wherein：
Fig. 1 is the photovoltaic generation electric storage device structure diagram of single battery；
Fig. 2 is the structure diagram of charge-discharge control circuit；
Fig. 3 is the structure diagram of Buck circuits；
Fig. 4 is the structure diagram of battery protecting circuit；
Fig. 5 is the structure diagram of Boost circuit；
Fig. 6 is the structure diagram of the alternative of the MOS switch circuit of the present invention；
Fig. 7 is the circuit diagram of Buck circuits of the invention, Boost circuit, battery protecting circuit
Wherein, (1)-solar cell module, (2)-charge-discharge control circuit, (3)-single battery, (4)-display unit,
(5)-detection circuit, (6)-signal conditioning circuit, (7)-Buck circuits, (8)-controller, (9)-battery protecting circuit, (10)-
Boost circuit, (11)-telecommunication circuit, the anode output of P+- solar cell modules, the negative terminal of P-- solar cell modules are defeated
Go out, the anode output of Vbus+-Buck circuits, the negative terminal output of Vbus--Buck circuits, the anode of Vled+-Boost circuits is defeated
Go out, the negative terminal output of Vled--Boost circuits, S1- first switch circuits, S2- second switch circuits, the first inductance of L1-, C1-
First capacitance, the first diodes of D1-, S3- third switching circuits, the 4th switching circuits of S4-, F1- over-current protection devices, L2-
Two inductance, the 5th switching circuits of S5-, the 6th switching circuits of S6-, the second capacitances of C2-, R1- first resistors, S7- mechano-electronics are opened
It closes, the second diodes of D2-.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts
Embodiment shall fall within the protection scope of the present invention.
Photovoltaic generation electric storage device structure diagram for the present invention as shown in Figure 1.The photovoltaic generation electric storage device of the present invention
Including solar cell module (1), charge-discharge control circuit (2), single battery (3), for detecting whether there is the inspection of sunlight
Slowdown monitoring circuit (5) and display unit (4), the solar cell module (1) and the input terminal of the charge-discharge control circuit (2)
Connection, the output terminal of the charge-discharge control circuit (2) are connect with the display unit (4), the single battery (3) and institute
Detection circuit (5) is stated to be electrically connected with the charge-discharge control circuit (2).
Daytime, the solar cell module (1) converted the solar into battery power, charge and discharge when shining upon
Control circuit (2) controls solar cell module (1) to the single battery according to the detection information of the detection circuit (5)
(3) it charges, the discharge loop of the charge-discharge control circuit (2) does not work in addition, so that the display unit (4) not work
Make；When not having sunlight irradiation at night, the charge-discharge control circuit (2) is according to the detection informations of the detection circuit (5)
The single battery (3) is controlled to power to the display unit (4), display unit (4) work.
Specifically, the single battery (3) can be high-capacity unit lithium battery or super capacitor.
Specifically, the detection circuit (5) can be the circuit of light-operated switch and photosensitive sensor composition, described light-operated to open
Close by photosensitive sensor by optical signal transfer for electric signal so as to be sent to charge-discharge control circuit (2)；It can also be detection
The input voltage of solar cell module and the circuit judged more specifically, a threshold value can be set, have sunlight daytime
Irradiation, the output voltage of solar cell module (1) are more than threshold value, are irradiated at night without sunlight, solar cell module (1)
Output voltage be less than threshold value, it is aobvious so as to be controlled by the relationship of the output voltage of solar cell module (1) and threshold value
Show the light on and off of component (4).
Specifically, the display unit (4) can be the common illuminator such as LED light, fluorescent lamp.
By the present invention in that with above-mentioned single battery (3) so that the cycle life of battery can reach capacity, so as to
Reduce the cost of photovoltaic generation electric storage device.
As Fig. 2 be charge-discharge control circuit structure diagram, as shown in the figure, the charge-discharge control circuit (2) includes
Buck circuits (7), Boost circuit (10), battery protecting circuit (9), signal conditioning circuit (6), controller (8) and communication electricity
Road (11), the input terminal of the Buck circuits (7) are connect with the solar cell module (1), the Buck circuits (7) it is defeated
On the one hand outlet is connect by the battery protecting circuit (9) with the single battery (3), still further aspect passes through described
Boost circuit (10) is connect with the display unit (4), the signal conditioning circuit (6) respectively with the Buck circuits (7),
Boost circuit (10), battery protecting circuit (9), controller (8), detection circuit (5), telecommunication circuit (11) electrical connection.
The signal conditioning circuit (6) is for controller (8) and Buck circuits (7), Boost circuit (10), battery guarantor
Signal between protection circuit (9), detection circuit (5), telecommunication circuit (11) is acquired, converts and transmits, the signal tune
Reason circuit (6) includes AD converter, interface circuit, driving circuit etc..
The output of the solar cell module (1) is P+, P-, the output of the Buck circuits (7) is Vbus+,
Vbus-, the output of the Boost circuit (10) are Vled+, Vled-, the output of the single battery (3) is Vbat+,
Vbat-。
When there is illumination on daytime, solar cell module (1) converts light energy into electric energy, automatically controlled by P+/P- access charge and discharges
Buck circuits (7) in circuit (2) processed, the input voltage of Buck circuits (7) acquisition solar cell module (1), are inputted
Constant voltage controls, and Buck circuits (7) export Vbus+/Vbus- by single battery (3) clamp voltage, are fitted by the variation of electric current
Changed power with solar cell module.The output voltage Vbus+/Vbus- of the Buck circuits (7) is using battery protection
Circuit (9) is connected to single battery (3), realizes the charging of single battery (3)；After battery is full of, controller (8) sends phase
The instruction answered closes Buck circuits (7) by signal conditioning circuit (6), stops charging.Light-operated switch will by photosensitive sensor
Optical signal transfer is electric signal, then accesses signal conditioning circuit (6), and signal is after conditioning, access controller (8), control
Device (8) processed closes Boost circuit (10) according to optically-controlled signal, and display unit (4) does not work.
During night no light, controller (8) receives light-operated switch effectively light-operated conditioned signal, sends instructions and starts Boost
Circuit (10), the single battery (3) are powered to the Boost circuit (10), Boost circuit (10) output 12V power supplys, driving
Display unit (4) works.
In addition, charge-discharge control circuit (2) also sends monitoring information to monitoring device by telecommunication circuit (11), for adjusting
Examination and on-site maintenance.Specifically, whether the monitoring information letters such as damages, whether needs replacing including the single battery (3)
Breath, the monitoring device can be specifically the various terminals such as computer, mobile phone or LCD display.
The structure diagram of the Buck circuits (7) of the present invention is illustrated in figure 3, it can be seen from the figure that the Buck circuits
(7) it is described including first switch circuit S1, second switch circuit S2, the first inductance L1, the first capacitance C1, the first diode D1
The source electrode of first switch circuit S1 is connect with the anode output P+ of the solar cell module (1), the first switch circuit
The drain electrode of S1 is connect with the drain electrode of the second switch circuit S2, and the source electrode of the second switch circuit S2 is on the one hand electric with first
Feel one end connection of L1, on the other hand the cathode with the first diode D1 is connect, the other end of the first sensor L1 and the
One end connection of one capacitance C1, the anode of the first diode D1 and the other end of the first capacitance are and solar cell
The negative terminal of component (1) exports P- with being connected and connect to circuit reference, the first switch circuit S1 and second switch circuit
Output terminal of the grid of S2 with the signal conditioning circuit (6) electrically connects.Buck circuits (7) are worked with pulse width modulation mode,
As first switch circuit S1 and second switch circuit S2 in the conduction state, the solar cell module (1) is to described
One inductance L1 charges；When the first switch circuit S1 and the second switch circuit S2 are in cut-off state, described first
Inductance L1, the first capacitance C1 and the first diode D1 form access, the first inductance L1 electric discharges, the first capacitance C1 chargings.Institute
Controller (8) is stated by controlling the make-and-break time of the first switch circuit S1 and the second switch circuit S2, so as to adjust
The variation of electric current adapts to the variation of the output power of solar cell module (1), when the output power increase of solar energy, then institute
Stating controller (8) controls the turn-on time of the first switch circuit S1 and second switch circuit S2 to increase, so that
Electric current increases, power increase；Conversely, when the output power of solar cell module (1) reduces, controller (8) control
The turn-on time of the first switch circuit S1 and the second switch circuit S2 shorten, so that electric current reduces, power subtracts
It is small.During by the on and off of the first switch circuit S1 and the second switch circuit S2 that control the Buck circuits (7)
Between, it is adapted to the variation of the output power of solar cell module (1) so as to increase or reduce the electric current of Buck circuits (7), because
And can so that the 18V solar cell modules of standard may be used in the solar cell module (1), reduce supporting industries
Difficulty and solar cell module (1) cost.
The structure diagram of the battery protecting circuit (9) of the present invention is illustrated in figure 4, it can be seen from the figure that the battery
Protection circuit (9) includes third switching circuit S3, the 4th switching circuit S4 and over-current protection device F1, the third switching circuit
The anode output Vbus+ of the source electrode of S3 and the Buck circuits (7) connect, the drain electrode of the third switching circuit S3 and described the
The drain electrode connection of four switching circuit S4, the source electrode of the 4th switching circuit S4 connect with one end of the over-current protection device F1
It connects, the other end of the over-current protection device F1 is connect with the anode of the single battery (3), and the single battery (3) is born
Pole is connect, and with being connected to circuit reference with the negative terminal output Vbus- of the Buck circuits (7).The third switching circuit S3
It is electrically connected with the output terminal of the grid of the 4th switching circuit S4 with the signal conditioning circuit (6).The controller (8)
The on and off shape of the third switching circuit S3 and the 4th switching circuit S4 are controlled by signal conditioning circuit (6)
State is so as to fulfill protection of the single battery (3) to the power supply of the display unit (4) and to the single battery (3).Work as night
There is no solar irradiation, the single battery (3) is powered to the display unit (4), and the controller (8) controls the third to open
The state that powered-down road S3 and the 4th switching circuit S4 are on, the single battery (3) give the Boost circuit (10)
Power supply, so as to drive LED light bright.When signal conditioning circuit (6) detects the single battery (3) in over-pressed, under-voltage, high
When temperature, low temperature, overcurrent or the situation of short circuit, the controller (8) sends corresponding instruction and is disconnected by signal conditioning circuit (6)
The third switching circuit S3 and the 4th switching circuit S4 of the battery protecting circuit (9), thus by the confession of single battery (3)
Circuit disconnects, protection single battery (3).
Specifically, the third switching circuit S3 can be P-channel metal-oxide-semiconductor or N-channel MOS pipe.
Specifically, the over-current protection device F1 can be fuse.
Fig. 5 is the structure diagram of the Boost circuit (10) of the present invention, as shown in the figure, the Boost circuit (10) includes the
Two inductance L2, the 5th switching circuit S5, the 6th switching circuit S6, the second capacitance C2 and first resistor R1, second inductance
One end of L2 is connect with the one end of the battery protecting circuit (9), the other end of the second inductance L2 on the one hand with it is described
The source electrode connection of 6th switching circuit S6, still further aspect are connect with the drain electrode of the 5th switching circuit S5, and the described 5th opens
The source electrode of powered-down road S5 is connect with one end of the first resistor R1, drain electrode and the second capacitance C2 of the 6th switching circuit S6
One end connection, the other end of the second capacitance C2 and one end of the first resistor R1 link, and the first resistor R1 is in addition
The negative pole end of one end and the single battery (3) is with being connected and connect to circuit reference.
Specifically, the resistance value of the first resistor R1 is usually smaller, is the milliohm order of magnitude, usually 10-20 milliohms.It is described
First resistor R1 can also be other current sensing devices, can be Hall sensor, current transformer etc. specifically.
For Boost circuit (10) tool of the present invention there are two types of control mode, one kind is acquisition output voltage and electric current, and control is permanent
Pressure, limit power output, 12V constant voltages are provided to display unit control panel.Another kind is acquisition output voltage and electric current, is controlled
Constant current limits power output, saves the driver of display unit.
Fig. 6 is the structure diagram of another alternative of the switch metal-oxide-semiconductor circuit of the present invention, can from Fig. 6
Go out, the switching circuit of battery protecting circuit (9) can be such as the switch metal-oxide-semiconductor in Fig. 4 or by mechanical electronic beam switch S7
The switching circuit of the second diode D2 of parallel connection compositions.
Fig. 7 is the circuit diagram of Buck circuits of the invention, Boost circuit, battery protecting circuit, as shown in the figure, daytime works as
When having sunlight irradiation, the output terminal P+ and P- of the solar cell module input to the input terminal of Buck circuits (7), described
Detection circuit (5) has detected whether sunlight and detection information is sent to controller (8), and the controller (8) is by described
Signal conditioning circuit (6) controls the first switch circuit S1 and second switch circuit S2 to be in pulse width modulation mode work, the
Three switching circuit S3 and the 4th switching circuit S4 are in the conduction state, Buck circuits (7) the acquisition input solar battery group
The voltage of part (1), carries out input constant voltage control, and Buck circuits (7) export Vbus+/Vbus- by single battery (3) clamper
Voltage, the controller (8) are controlled by controlling the make-and-break time of the first switch S1 pipes and the second switch S2 pipes
The variation of electric current, so as to be adapted to the changed power of solar cell module, the output of the Buck circuits (7) is protected using battery
Protection circuit (9) is connected to the single battery (3), so as to fulfill too can battery give single battery (3) charging；Work as single battery
(3) full of later, controller (8) sends instruction, closes Buck circuits (7) by signal conditioning circuit (6), stops charging.Institute
State controller (8) also according to the detection circuit (5) detection information by the signal conditioning circuit control Boost whether work
Make, so as to control the light on and off of LED light.When there is no sunlight irradiation at night, the detection circuit (5) by detect sunlight or
Person detects the output voltage of solar cell module, so as to which the detection information is sent to controller (8), the controller (8)
Order is sent, the third switching circuit S3 and the 4th switching circuit S4 is controlled to be on shape by signal conditioning circuit (6)
State, the 5th switching circuit S5 and the 6th switching circuit S6 are in the pulse width modulation mode work of staggeredly complementation, the Boost circuit
(10) output voltage and electric current of the single battery (3) are acquired, the controller (8) controls the Boost circuit (10) real
Existing constant pressure or constant current limit power output, power so as to fulfill the single battery (3) to the display unit (4).
The photovoltaic generation electric storage device of the present invention, has advantages below：
1st, using large-capacity single battery, circulating battery service life is improved, so as to cost-effective；
2nd, the use of Buck circuits can use the 18V solar cell modules of standard, reduce supporting industries difficulty and too
The cost of positive energy battery component；
3rd, Boost constant currents driving is integrated, the repetition configuration of the driver in display unit can be reduced, reduce cost.
The above disclosure is only the preferred embodiments of the present invention, cannot limit the right model of the present invention with this certainly
It encloses, therefore equivalent variations made according to the claims of the present invention, is still within the scope of the present invention.
Claims (10)
1. a kind of photovoltaic generation electric storage device, including solar cell module, single battery, charge-discharge control circuit and
For detecting whether there is the detection circuit of sunlight, the solar cell module, single battery and detection circuit are and institute
State charge-discharge control circuit electrical connection.
2. a kind of photovoltaic generation electric storage device as described in claim 1, it is characterised in that：The charge-discharge control circuit includes
Buck circuits, Boost circuit, the input terminal of the Buck circuits are connect with the solar cell module, the Boost circuit
It is electrically connected between output terminal and the load of the Buck circuits.
3. a kind of photovoltaic generation electric storage device as claimed in claim 2, it is characterised in that：The charge-discharge control circuit also wraps
Include battery protecting circuit, the battery protecting circuit be electrically connected to the Buck circuits output terminal and the single battery it
Between.
4. a kind of photovoltaic generation electric storage device as claimed in claim 3, it is characterised in that：The charge-discharge control circuit also wraps
Controller, signal conditioning circuit are included, the signal conditioning circuit is protected with the controller, Buck circuits, Boost circuit, battery
Protection circuit and detection circuit electrical connection, the signal conditioning circuit are used for the controller and the Buck circuits, Boost
Signal between circuit, battery protecting circuit, detection circuit is acquired, converts and transmits.
5. a kind of photovoltaic generation electric storage device as claimed in claim 3, it is characterised in that：The Buck circuits are opened including first
Powered-down road, second switch circuit, the first inductance, the first diode, the first capacitance, the first switch circuit are opened with described second
Parallel branch is formed with first diodes in parallel after powered-down road series connection, first inductance and first capacitance series connection,
The parallel branch is connected in series with the second switch circuit.
6. a kind of photovoltaic generation electric storage device as claimed in claim 4, it is characterised in that：The battery protecting circuit includes the
Three switching circuits, the 4th switching circuit and over-current protection device, the over-current protection device, the 4th switching circuit, third are opened
Powered-down road is sequentially connected in series between the anode of single battery and the output terminal of Buck circuits.
7. a kind of photovoltaic generation electric storage device as claimed in claim 4, it is characterised in that：The Boost circuit includes second
Inductance, the 5th switching circuit, the 6th switching circuit, the second capacitance and first resistor, the 6th switching circuit and the second electricity
In parallel with the 5th switching circuit after appearance series connection to form parallel branch, the parallel branch is serially connected in the second inductance and the first electricity
Between resistance.
8. a kind of photovoltaic generation electric storage device as claimed in claim 6, it is characterised in that：The charge-discharge control circuit also wraps
Telecommunication circuit is included, the controller sends monitoring information by the telecommunication circuit to other-end equipment.
9. a kind of photovoltaic generation electric storage device as described in claim 1, it is characterised in that：The single battery is large capacity single
Body battery or super capacitor.
10. a kind of photovoltaic generation electric storage device as claimed in claim 2, it is characterised in that：The load is LED light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810135434.0A CN108233520A (en) | 2018-02-09 | 2018-02-09 | A kind of photovoltaic generation electric storage device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810135434.0A CN108233520A (en) | 2018-02-09 | 2018-02-09 | A kind of photovoltaic generation electric storage device |
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| CN108233520A true CN108233520A (en) | 2018-06-29 |
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| CN201810135434.0A Pending CN108233520A (en) | 2018-02-09 | 2018-02-09 | A kind of photovoltaic generation electric storage device |
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