CN208522519U - A kind of photovoltaic power generation electric storage device - Google Patents
A kind of photovoltaic power generation electric storage device Download PDFInfo
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- CN208522519U CN208522519U CN201820235126.0U CN201820235126U CN208522519U CN 208522519 U CN208522519 U CN 208522519U CN 201820235126 U CN201820235126 U CN 201820235126U CN 208522519 U CN208522519 U CN 208522519U
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Abstract
The utility model discloses a kind of photovoltaic power generation electric storage devices, the photovoltaic power generation electric storage device includes solar cell module, single battery, Buck circuit, Boost circuit, battery protecting circuit, for detecting whether there is the detection circuit of sunlight, controller, signal conditioning circuit and display unit, the output end of the solar cell module is connect with the input terminal of the Buck circuit, on the one hand the output end of the Buck circuit passes through the battery protecting circuit and connect with the single battery, still further aspect is connect by the Boost circuit with the display unit, the signal conditioning circuit and the Buck circuit, Boost circuit, battery protecting circuit, controller, detection circuit electrical connection.The service life that circulating battery uses can be improved using the photovoltaic power generation electric storage device of the utility model, simultaneously but also the 18V solar cell module of standard can be used in the device, furthermore the constant current driving of Boost circuit is integrated, the configuration of the driving circuit of display unit can be reduced, to reduce the cost of photovoltaic power generation electric storage device.
Description
Technical field
The utility model relates to a kind of photovoltaic power generation storage of photovoltaic power generation storage field more particularly to single battery dresses
It sets.
Background technique
Solar power generation is a kind of clean energy resource, but photovoltaic power 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 solution is answered without alternating current
The problem of with power generation and storage under scene.Early stage in the market using lead-acid battery energy storage mode it is more, but lead-acid battery because
The disadvantage that it is not environmentally, the service life is short and maintenance cost is 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 panel,
4 series lithium battery energy storage are accessed by photovoltaic controller and battery management system, then exports the 12V constant voltage source 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, leads to capacity after battery group
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, battery higher cost can only be selected.
Utility model content
Based on this, to solve the above-mentioned technical problem in traditional technology, spy proposes a kind of photovoltaic power generation electric storage device.
A kind of photovoltaic power generation electric storage device comprising 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 circuit, Boost circuit, the input of the Buck circuit
End is connect with the solar cell module, and the Boost circuit is electrically connected to output end and the load of the Buck circuit
Between；
Further, the charge-discharge control circuit further includes battery protecting circuit, the battery protecting circuit electrical connection
Between the output end and the single battery of the Buck circuit.
Further, the charge-discharge control circuit further includes controller, signal conditioning circuit, the signal conditioning circuit
It is electrically connected with the controller, Buck circuit, Boost circuit, battery protecting circuit and detection circuit, the signal condition electricity
Road be used for the signal between the controller and the Buck circuit, Boost circuit, battery protecting circuit, detection circuit into
Row acquisition, conversion and transmission.
Further, the Buck circuit includes first switch circuit, second switch circuit, the first inductance, the one or two pole
Pipe, first capacitor, the first switch circuit are connected with the second switch circuit, first inductance and the first capacitor
Formation parallel branch in parallel with the first diode after series connection, the parallel branch and second switch circuit are connected in series.
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 end of circuit.
Further, the Boost circuit includes the second inductance, the 5th switching circuit, the 6th switching circuit, the second capacitor
And first resistor, the 6th switching circuit composition in parallel branch in parallel with the 5th switching circuit after connecting with the second capacitor
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 terminal devices.
Further, the single battery is large-capacity single battery or super capacitor.
Further, the load is LED light.
Using the photovoltaic power generation electric storage device of the utility model, improved using large-capacity single battery the service life of battery, and
And the 18V solar cell module of standard can be directly used, the constant current by integrating Boost circuit drives design, can subtract
The driving circuit of few LED light, to reduce the design cost of solar energy power generating electric storage device.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Wherein:
Fig. 1 is the photovoltaic power generation electric storage device structural block diagram of single battery；
Fig. 2 is the structural block diagram of charge-discharge control circuit；
Fig. 3 is the structural block diagram of Buck circuit；
Fig. 4 is the structural block diagram of battery protecting circuit；
Fig. 5 is the structural block diagram of Boost circuit；
Fig. 6 is the structural block diagram of the alternative of the MOS switch circuit of the utility model；
Fig. 7 is the circuit diagram of the Buck circuit of the utility model, 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 circuit, 8- controller, 9- battery protecting circuit, 10-Boost circuit, 11- communication
Circuit, the anode output of P+- solar cell module, the negative terminal output of P-- solar cell module, Vbus+-Buck circuit
Anode output, the negative terminal output of Vbus--Buck circuit, the anode output of Vled+-Boost circuit, Vled--Boost circuit
Negative terminal output, S1- first switch circuit, S2- second switch circuit, the first inductance of L1-, C1- first capacitor, D1- the one or two
Pole pipe, S3- third switching circuit, the 4th switching circuit of S4-, F1- over-current protection device, the second inductance of L2-, S5- the 5th are switched
Circuit, the 6th switching circuit of S6-, the second capacitor of C2-, R1- first resistor, S7- mechanical electronic beam switch, the second diode of D2-.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
It is as shown in Figure 1 the photovoltaic power generation electric storage device structural block diagram of the utility model.The photovoltaic power generation of the utility model
Electric storage device include solar cell module 1, charge-discharge control circuit 2, single battery 3, for detecting whether there is sunlight
Detection circuit 5 and display unit 4, the solar cell module 1 are connect with the input terminal of the charge-discharge control circuit 2,
The output end of the charge-discharge control circuit 2 is connect with the display unit 4, the single battery 3 and the detection circuit 5
It is electrically connected with the charge-discharge control circuit 2.
Daytime, the solar cell module 1 converted the solar into battery power, and charge and discharge is automatically controlled when shining upon
Circuit 2 processed controls solar cell module 1 according to the detection information of the detection circuit 5 and charges to the single battery 3, furthermore
The discharge loop of the charge-discharge control circuit 2 does not work, so that the display unit 4 does not work；When night is without too
When sunlight irradiates, the charge-discharge control circuit 2 controls the single battery 3 according to the detection information of the detection circuit 5 and gives
The display unit 4 is powered, and the display unit 4 works.
Specifically, the single battery 3 can be high-capacity unit lithium battery, be also possible to super capacitor.
Specifically, the detection circuit 5 can be the circuit of light-operated switch and photosensitive sensor composition, the light-operated switch
Optical signal is shifted as electric signal to be sent to charge-discharge control circuit 2 by photosensitive sensor；It is also possible to detect the sun
Can battery component input voltage and the circuit that is judged have solar irradiation daytime more specifically, a threshold value can be set
It penetrates, the output voltage of solar cell module 1 is greater than threshold value, irradiates at night without sunlight, the output of solar cell module 1
Voltage is less than threshold value, so as to control display unit 4 by the relationship of the output voltage of solar cell module 1 and threshold value
Light on and off.
Specifically, the display unit 4 can be the common illuminator such as LED light, fluorescent lamp.
The utility model is by using above-mentioned single battery 3, so that the cycle life of battery can achieve the limit, so as to
To reduce the cost of photovoltaic power generation electric storage device.
If Fig. 2 is the structural block diagram of charge-discharge control circuit, as shown, the charge-discharge control circuit 2 includes Buck
Circuit 7, Boost circuit 10, battery protecting circuit 9, signal conditioning circuit 6, controller 8 and telecommunication circuit 11, the Buck
The input terminal of circuit 7 is connect with the solar cell module 1, on the one hand the output end of the Buck circuit 7 passes through the electricity
Pond protection circuit 9 is connect with the single battery 3, and still further aspect is connected by the Boost circuit 10 with the display unit 4
Connect, the signal conditioning circuit 6 respectively with the Buck circuit 7, Boost circuit 10, battery protecting circuit 9, controller 8, inspection
Slowdown monitoring circuit 5, telecommunication circuit 11 are electrically connected.
The signal conditioning circuit 6 be used for controller 8 and Buck circuit 7, Boost circuit 10, battery protecting circuit 9,
Signal between detection circuit 5, telecommunication circuit 11 is acquired, converts and transmits, and the signal conditioning circuit 6 turns including AD
Parallel operation, interface circuit, driving circuit etc..
The output of the solar cell module 1 is P+, P-, and the output of the Buck circuit 7 is Vbus+, Vbus-, institute
The output for stating Boost circuit 10 is Vled+, Vled-, and 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, accesses charge and discharge control by P+/P-
Buck circuit 7 in circuit 2, Buck circuit 7 acquire the input voltage of solar cell module 1, carry out input constant voltage control
System, Buck circuit 7 export Vbus+/Vbus- by 3 clamp voltage of single battery, are adapted to solar battery group by the variation of electric current
The changed power of part.The output voltage Vbus+/Vbus- of the Buck circuit 7 is connected to list using battery protecting circuit 9
Body battery 3 realizes the charging of single battery 3；After battery is full of, controller 8 sends corresponding instruction, by signal condition
Circuit 6 closes Buck circuit 7, stops charging.Light-operated switch is shifted optical signal for electric signal by photosensitive sensor, is then connect
Enter signal conditioning circuit 6, signal is after conditioning, access controller 8, and controller 8 closes Boost electricity according to optically-controlled signal
Road 10, display unit 4 do not work.
When night no light, controller 8 receives light-operated switch effectively light-operated conditioned signal, sends instructions and starts Boost electricity
Road 10, the single battery 3 are powered to the Boost circuit 10, and Boost circuit 10 exports 12V power supply, drive display unit 4
Work.
In addition, charge-discharge control circuit 2 also sends monitoring information to monitoring device by telecommunication circuit 11, for debugging and
On-site maintenance.Specifically, the monitoring information includes whether the single battery 3 information such as damages, whether needs replacing, described
Monitoring device specifically can be the various terminals such as computer, mobile phone, be also possible to LCD display.
It is illustrated in figure 3 the structural block diagram of the Buck circuit 7 of the utility model, it can be seen from the figure that the Buck is electric
Road 7 includes first switch circuit S1, second switch circuit S2, the first inductance L1, first capacitor C1, first diode D1, described
The source electrode of first switch circuit S1 is connect with the anode of the solar cell module 1 output P+, the first switch circuit S1
Drain electrode connect with the drain electrode of the second switch circuit S2, on the one hand and the first inductance the source electrode of the second switch circuit S2
One end of L1 connects, and on the other hand connect with the cathode of first diode D1, the other end and first of the first sensor L1
One end of capacitor C1 connects, and the other end of the anode of the first diode D1 and first capacitor is and solar battery
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 S2
Output end of the grid with the signal conditioning circuit 6 electrically connect.Buck circuit 7 is worked with pulse width modulation mode, when first
When switching circuit S1 and second switch circuit S2 in the conductive state, the solar cell module 1 gives the first inductance L1
Charging；When the first switch circuit S1 and the second switch circuit S2 are in off state, the first inductance L1,
One capacitor C1 and first diode D1 forms access, the first inductance L1 electric discharge, first capacitor C1 charging.The controller 8
By controlling the make-and-break time of the first switch circuit S1 and the second switch circuit S2, come so as to adjust the variation of electric current
The output power variation of solar cell module 1 is adapted to, when the output power of solar energy increases, then the controller 8 controls
The turn-on time of the first switch circuit S1 and the second switch circuit S2 increase, so that electric current increases, power increases
Greatly；Conversely, when solar cell module 1 output power reduce when, the controller 8 control the first switch circuit S1 and
The turn-on time of the second switch circuit S2 shortens, so that electric current reduces, power reduces.By controlling the Buck
The on and off time of the first switch circuit S1 of circuit 7 and the second switch circuit S2, to increase or reduce Buck
The electric current of circuit 7 is adapted to the variation of the output power of solar cell module 1, thus can make the solar battery group
Part 1 can use the 18V solar cell module of standard, reduce 1 cost of supporting industries difficulty and solar cell module.
It is illustrated in figure 4 the structural block diagram of the battery protecting circuit 9 of the utility model, it can be seen from the figure that the electricity
It includes third switching circuit S3, the 4th switching circuit S4 and over-current protection device F1, the third switch electricity that circuit 9 is protected in pond
The anode output Vbus+ of the source electrode of road S3 and the Buck circuit 7 connect, the drain electrode of the third switching circuit S3 and described the
The drain electrode of four switching circuit S4 connects, and the source electrode of the 4th switching circuit S4 and one end of the over-current protection device F1 connect
Connect, the anode of the other end of the over-current protection device F1 and the single battery 3 connect, the cathode of the single battery 3 and
The negative terminal of the Buck circuit 7 exports Vbus- connection, and with being connected to circuit reference.The third switching circuit S3 and described
Output end of the grid of 4th switching circuit S4 with the signal conditioning circuit 6 electrically connects.The controller 8 passes through signal
Conditioning circuit 6 controls the on and off state of the third switching circuit S3 and the 4th switching circuit S4 to realize
Protection of the single battery 3 to the power supply of the display unit 4 and to the single battery 3.There is no solar irradiation when night, institute
It states single battery 3 to power to the display unit 4, the controller 8 controls the third switching circuit S3 and the described 4th and opens
The state that powered-down road S4 is on, the single battery 3 is powered to the Boost circuit 10, to drive LED light bright.When
When signal conditioning circuit 6 detects that the single battery 3 is in the situation of over-voltage, under-voltage, high temperature, low temperature, overcurrent or short circuit, institute
It states controller 8 and sends the third switching circuit that corresponding instruction disconnects the battery protecting circuit 9 by signal conditioning circuit 6
S3 and the 4th switching circuit S4 protects single battery 3 so that the power supply circuit of single battery 3 be disconnected.
Specifically, the third switching circuit S3 can be P-channel metal-oxide-semiconductor, be also possible to N-channel MOS pipe.
Specifically, the over-current protection device F1 can be fuse.
Fig. 5 is the structural block diagram of the Boost circuit 10 of the utility model, as shown, the Boost circuit 10 includes the
Two inductance L2, the 5th switching circuit S5, the 6th switching circuit S6, the second capacitor C2 and first resistor R1, second inductance
One end of L2 is connect with one end of the battery protecting circuit 9, and the other end of the second inductance L2 is on the one hand with described the
The source electrode of six switching circuit S6 connects, and still further aspect is connect with the drain electrode of the 5th switching circuit S5, the 5th switch
The source electrode of circuit S5 is connect with one end of the first resistor R1, and the drain electrode of the 6th switching circuit S6 is with the second capacitor C2's
One end connection, the other end of the second capacitor C2 and one end of the first resistor R1 link, and other the one of the first resistor R1
The negative pole end of 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 milliohm.Institute
Stating first resistor R1 can also be other current sensing devices, specifically, can be Hall sensor, current transformer etc..
For the tool of Boost circuit 10 of the utility model there are two types of control mode, one kind is acquisition output voltage and electric current, control
Constant pressure, limit power output, provide 12V constant voltage to display unit control panel.Another kind is acquisition output voltage and electric current, control
Constant current processed limits power output, saves the driver of display unit.
Fig. 6 is the structural block diagram of another alternative of the switch metal-oxide-semiconductor circuit of the utility model, can from Fig. 6
To find out, the switching circuit of battery protecting circuit 9 be can be such as the switch metal-oxide-semiconductor in Fig. 4, is also possible to by mechanical electronic beam switch
The switching circuit of S7 the second diode D2 of parallel connection composition.
Fig. 7 is the circuit diagram of the Buck circuit of the utility model, Boost circuit, battery protecting circuit, as shown, white
, when there is sunlight irradiation, the output end P+ and P- of the solar cell module input to the input terminal of Buck circuit 7, institute for it
It states detection circuit 5 to have detected whether sunlight and will test information to be sent to controller 8, the controller 8 passes through the signal
Conditioning circuit 6 controls the first switch circuit S1 and second switch circuit S2 and is in pulse width modulation mode work, third switch
Circuit S3 and the 4th switching circuit S4 are in the conductive state, the electricity of the acquisition of the Buck circuit 7 input solar cell module 1
Pressure, carries out input constant voltage control, and Buck circuit 7 exports Vbus+/Vbus- by 3 clamp voltage of single battery, the control
Device 8 controls the variation of electric current by controlling the make-and-break time of the first switch S1 pipe and the second switch S2 pipe, thus
It is adapted to the changed power of solar cell module, the output of the Buck circuit 7 is connected to described using battery protecting circuit 9
Single battery 3, thus realize too can battery give single battery 3 charge；After single battery 3 is full of, the transmission of controller 8 refers to
It enables, closes Buck circuit 7 by signal conditioning circuit 6, stop charging.Inspection of the controller 8 also according to the detection circuit 5
Measurement information controls whether Boost works by the signal conditioning circuit, to control the light on and off of LED light.When night is without too
When sunlight irradiates, the detection circuit 5 is by detection sunlight or the output voltage of detection solar cell module, thus will
The detection information is sent to controller 8, and the controller 8 sends order, controls the third by signal conditioning circuit 6 and open
Powered-down road S3 and the 4th switching circuit S4 are in the conductive state, and the 5th switching circuit S5 and the 6th switching circuit S6 are in staggeredly
Complementary pulse width modulation mode work, the Boost circuit 10 acquires the output voltage and electric current of the single battery 3, described
Controller 8 controls the Boost circuit 10 and realizes constant pressure or constant current limit power output, thus realize the single battery 3 to
The display unit 4 is powered.
The photovoltaic power generation electric storage device of the utility model, has following advantages:
1, using large-capacity single battery, circulating battery service life is improved, thus save the cost；
2, the use of Buck circuit, can be used the 18V solar cell module of standard, reduce supporting industries difficulty and too
The cost of positive energy battery component；
3, Boost constant current driving is integrated, the repetition configuration of the driver in display unit can be reduced, reduce cost.
Above disclosures are merely preferred embodiments of the utility model, the utility model cannot be limited with this certainly
Interest field, therefore equivalent variations made according to the claim of the utility model still fall within the scope of the utility model.
Claims (9)
1. a kind of photovoltaic power generation electric storage device comprising 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
Charge-discharge control circuit electrical connection is stated, the single battery is large-capacity single battery or super capacitor.
2. a kind of photovoltaic power generation electric storage device as described in claim 1, it is characterised in that: the charge-discharge control circuit includes
The input terminal of Buck circuit, Boost circuit, the Buck circuit is connect with the solar cell module, described for acquiring
The input voltage of solar cell module, and carry out constant voltage control；The Boost circuit is electrically connected to the Buck circuit
Output end and load between, for driving the loaded work piece.
3. a kind of photovoltaic power 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 circuit output end and the single battery it
Between, for protecting the single battery.
4. a kind of photovoltaic power 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 and the controller, Buck circuit, Boost circuit, battery are protected
Protection circuit and detection circuit electrical connection, the signal conditioning circuit are used for the controller and the Buck circuit, Boost
Circuit, battery protecting circuit, the signal between detection circuit are acquired, convert and transmit.
5. a kind of photovoltaic power generation electric storage device as claimed in claim 3, it is characterised in that: the Buck circuit is opened including first
Powered-down road, second switch circuit, the first inductance, first diode, first capacitor, the first switch circuit are opened with described second
Composition parallel branch in parallel with the first diode after powered-down road series connection, first inductance and first capacitor series connection,
The parallel branch and the second switch circuit are connected in series.
6. a kind of photovoltaic power 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 end of Buck circuit.
7. a kind of photovoltaic power 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 capacitor and first resistor, the 6th switching circuit and the second electricity
Hold composition parallel branch in parallel with the 5th switching circuit after connecting, the parallel branch is serially connected in the second inductance and the first electricity
Between resistance.
8. a kind of photovoltaic power 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 to other terminal devices by the telecommunication circuit.
9. a kind of photovoltaic power generation electric storage device as claimed in claim 2, it is characterised in that: the load is LED light.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820235126.0U CN208522519U (en) | 2018-02-09 | 2018-02-09 | A kind of photovoltaic power generation electric storage device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820235126.0U CN208522519U (en) | 2018-02-09 | 2018-02-09 | A kind of photovoltaic power generation electric storage device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108233520A (en) * | 2018-02-09 | 2018-06-29 | 深圳市普兰德储能技术有限公司 | A kind of photovoltaic generation electric storage device |
| CN112865233A (en) * | 2021-01-20 | 2021-05-28 | 赣州市正途科技有限公司 | Intelligent solar power generation energy storage circuit |
-
2018
- 2018-02-09 CN CN201820235126.0U patent/CN208522519U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108233520A (en) * | 2018-02-09 | 2018-06-29 | 深圳市普兰德储能技术有限公司 | A kind of photovoltaic generation electric storage device |
| CN112865233A (en) * | 2021-01-20 | 2021-05-28 | 赣州市正途科技有限公司 | Intelligent solar power generation energy storage circuit |
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