CN203445640U - Independent photovoltaic system - Google Patents
Independent photovoltaic system Download PDFInfo
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- CN203445640U CN203445640U CN201320431196.0U CN201320431196U CN203445640U CN 203445640 U CN203445640 U CN 203445640U CN 201320431196 U CN201320431196 U CN 201320431196U CN 203445640 U CN203445640 U CN 203445640U
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- storage battery
- voltage
- stabiliser tube
- resistance
- effect transistor
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Abstract
The utility model provides an independent photovoltaic system. The system comprises a photovoltaic assembly, a storage battery and a load which are in parallel connection; and an overcharge control circuit structure is connected in parallel between the photovoltaic assembly and the storage battery, and an overdischarge control circuit structure is connected in parallel between the storage battery and the load. The independent photovoltaic system is simple in structure, low in cost and convenient in maintenance; can effectively prevent the storage battery from overcharge and overdischarge to protect the storage battery; prolongs the service life; and can be better used and popularized.
Description
Technical field
The utility model relates to solar energy generation technology field, is specially a kind of solar energy angle of solar battery system.
Background technology
At present; small-sized solar angle of solar battery system mainly consists of solar photovoltaic assembly, storage battery, charging-discharging controller and load four parts; charging-discharging controller is vital parts in solar energy angle of solar battery system; it is that the energy-storage travelling wave tube storage battery in system is discharged and recharged to control; with battery-free, in use there is overcharging or crossing the phenomenon of putting; affect the life of storage battery; the defects such as yet existing charging-discharging controller ubiquity circuit is complicated, cost is higher, maintenance difficult are still short of to some extent in protection accumulator super-charge, electric discharge.
Summary of the invention
For the problems referred to above, the utility model provides a kind of solar energy angle of solar battery system, and it is simple in structure, with low cost, easy to maintenance; can effectively prevent accumulator super-charge, overdischarge; protection storage battery, increases the service life, and has good use promotional value.
The technical solution of the utility model is such: it comprises photovoltaic module, storage battery, load, connection parallel with one another between described photovoltaic module, storage battery, load, it is characterized in that: the control circuit structure of overcharging is connected in parallel between described photovoltaic module, storage battery, overdischarge control circuit structure is connected in parallel between described storage battery, load.
It is further characterized in that: described storage battery adopts 12V lead acid accumulator, the described control circuit structure of overcharging comprises resistance R 1, R2, R3, R4, R5, R6, capacitor C 1, field effect transistor Q1, diode D1, D2, voltage-stabiliser tube T1, T2, described overdischarge control circuit structure comprises resistance R 7, R8, R9, capacitor C 2, field effect transistor Q2, voltage-stabiliser tube T3, described voltage-stabiliser tube T1, T2, T3 all adopts model TL431 a reference source, described resistance R 1, R2, one end of capacitor C 1, the negative electrode of voltage-stabiliser tube T1, the grid of field effect transistor Q1 is all connected, the source electrode of described field effect transistor Q1 connects the other end of described resistance R 1, the negative pole of diode D1, the other end of described resistance R 2 connects the positive pole of described diode D2, the negative pole of described diode D2 all with described resistance R 3, one end of R4, the reference utmost point of voltage-stabiliser tube T1, the negative electrode of voltage-stabiliser tube T2 is connected, the reference utmost point of described voltage-stabiliser tube T2 connects described resistance R 5, one end of R6, the drain electrode of described field effect transistor Q1 connects described resistance R 4, the other end of R5 is also connected with the positive pole of described storage battery, described voltage-stabiliser tube T1, the anode of T2, resistance R 3, R6, ground connection after the other end of capacitor C 1 is all connected, the minus earth of described storage battery, the reference utmost point of described voltage-stabiliser tube T3 connects one end of described resistance R 7, R8, the negative electrode of described voltage-stabiliser tube T3 is all connected with described resistance R 9, one end of capacitor C 2, the grid of field effect transistor Q2, ground connection after the anode of the other end of described resistance R 8, voltage-stabiliser tube T3 is connected, described resistance R 7, R9, the other end of capacitor C 2, the source electrode of field effect transistor Q2 are all connected, and are connected with the positive pole of described storage battery.
A kind of solar energy angle of solar battery system that the utility model adopts, in solar energy angle of solar battery system, storage battery adopts the lead acid accumulator of 12V, and its voltage is normally controlled between 10.6V～14.4V, the control circuit structure of overcharging, in overdischarge control circuit structure, all adopted TL431 a reference source, if battery tension is during higher than the voltage range of its 14.4V, by the control circuit structure of overcharging, can avoid photovoltaic module to charge in batteries, if battery tension is during lower than the voltage range of its 10.6V, overdischarge control circuit structure can be cut off the path that storage battery powers to the load, avoid battery overdischarge, thereby effectively played overcharging to storage battery in solar energy angle of solar battery system, over.
Accompanying drawing explanation
Fig. 1 is the electric circuit constitute block diagram of the present utility model;
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
As shown in Figure 1 and Figure 2, the utility model comprises photovoltaic module 1, storage battery 2, load 3, connection parallel with one another between photovoltaic module 1, storage battery 2, load 3, the control circuit structure 4 of overcharging is connected in parallel between photovoltaic module 1, storage battery 2, and overdischarge control circuit structure 5 is connected in parallel between storage battery 2, load 3, storage battery 2 adopts 12V lead acid accumulator, the control circuit structure 4 of overcharging comprises resistance R 1, R2, R3, R4, R5, R6, capacitor C 1, field effect transistor Q1, diode D1, D2, voltage-stabiliser tube T1, T2, overdischarge control circuit structure 5 comprises resistance R 7, R8, R9, capacitor C 2, field effect transistor Q2, voltage-stabiliser tube T3, voltage-stabiliser tube T1, T2, T3 all adopts model TL431 a reference source, resistance R 1, R2, one end of capacitor C 1, the negative electrode of voltage-stabiliser tube T1, the grid of field effect transistor Q1 is all connected, the other end of the source electrode contact resistance R1 of field effect transistor Q1, the negative pole of diode D1, the other end of resistance R 2 connects the positive pole of diode D2, the negative pole of diode D2 all with resistance R 3, one end of R4, the reference utmost point of voltage-stabiliser tube T1, the negative electrode of voltage-stabiliser tube T2 is connected, the reference utmost point contact resistance R5 of voltage-stabiliser tube T2, one end of R6, the drain electrode contact resistance R4 of field effect transistor Q1, the other end of R5 is also connected with the positive pole of storage battery 2, voltage-stabiliser tube T1, the anode of T2, resistance R 3, R6, ground connection after the other end of capacitor C 1 is all connected, the minus earth of storage battery 2, the reference utmost point contact resistance R7 of voltage-stabiliser tube T3, one end of R8, the negative electrode of voltage-stabiliser tube T3 is all connected with resistance R 9, one end of capacitor C 2, the grid of field effect transistor Q2, ground connection after the anode of the other end of resistance R 8, voltage-stabiliser tube T3 is connected, resistance R 7, R9, the other end of capacitor C 2, the source electrode of field effect transistor Q2 are all connected, and are connected with the positive pole of storage battery 2.
The course of work of the present utility model is: in solar energy angle of solar battery system, storage battery 2 adopts 12V lead acid accumulator, its voltage is normally controlled between 10.6V～14.4V, when having illumination, photovoltaic module 1 is powered to storage battery 2 under the control of the control circuit structure 4 of overcharging, by choosing suitable resistance R 4, the resistance of R5, by dividing potential drop effect, while making storage battery 2 both end voltage reach 14.4V, voltage-stabiliser tube T1 is turned off, field effect transistor Q1 is operated in cut-off region, charge circuit is cut off, thereby effectively avoided photovoltaic module 1 to overcharge to storage battery 2, when illumination is not strong, storage battery 2 is powered to load 3 under the control of overdischarge control circuit structure 5, by choosing the resistance of suitable resistance R 8, R9, while making storage battery 2 both end voltage be less than 10.6V, voltage-stabiliser tube T3 turn-offs, make field effect transistor Q2 be operated in cut-off region, cut off storage battery 2 to load 3 supply paths, thereby effectively avoided storage battery 2 overdischarge, when storage battery 2 both end voltage are during at 10.6V～14.4V, all conductings of field effect transistor Q1, Q2, photovoltaic module 1 can fill 2 electricity to storage battery, and load 3 also works.
Claims (1)
1. a solar energy angle of solar battery system, it comprises photovoltaic module, storage battery, load, connection parallel with one another between described photovoltaic module, storage battery, load, the control circuit structure of overcharging is connected in parallel between described photovoltaic module, storage battery, and overdischarge control circuit structure is connected in parallel between described storage battery, load, it is characterized in that: described storage battery adopts 12V lead acid accumulator, the described control circuit structure of overcharging comprises resistance R 1, R2, R3, R4, R5, R6, capacitor C 1, field effect transistor Q1, diode D1, D2, voltage-stabiliser tube T1, T2, described overdischarge control circuit structure comprises resistance R 7, R8, R9, capacitor C 2, field effect transistor Q2, voltage-stabiliser tube T3, described voltage-stabiliser tube T1, T2, T3 all adopts model TL431 a reference source, described resistance R 1, R2, one end of capacitor C 1, the negative electrode of voltage-stabiliser tube T1, the grid of field effect transistor Q1 is all connected, the source electrode of described field effect transistor Q1 connects the other end of described resistance R 1, the negative pole of diode D1, the other end of described resistance R 2 connects the positive pole of described diode D2, the negative pole of described diode D2 all with described resistance R 3, one end of R4, the reference utmost point of voltage-stabiliser tube T1, the negative electrode of voltage-stabiliser tube T2 is connected, the reference utmost point of described voltage-stabiliser tube T2 connects described resistance R 5, one end of R6, the drain electrode of described field effect transistor Q1 connects described resistance R 4, the other end of R5 is also connected with the positive pole of described storage battery, described voltage-stabiliser tube T1, the anode of T2, resistance R 3, R6, ground connection after the other end of capacitor C 1 is all connected, the minus earth of described storage battery, the reference utmost point of described voltage-stabiliser tube T3 connects one end of described resistance R 7, R8, the negative electrode of described voltage-stabiliser tube T3 is all connected with described resistance R 9, one end of capacitor C 2, the grid of field effect transistor Q2, ground connection after the anode of the other end of described resistance R 8, voltage-stabiliser tube T3 is connected, described resistance R 7, R9, the other end of capacitor C 2, the source electrode of field effect transistor Q2 are all connected, and are connected with the positive pole of described storage battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320431196.0U CN203445640U (en) | 2013-07-19 | 2013-07-19 | Independent photovoltaic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320431196.0U CN203445640U (en) | 2013-07-19 | 2013-07-19 | Independent photovoltaic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203445640U true CN203445640U (en) | 2014-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320431196.0U Expired - Fee Related CN203445640U (en) | 2013-07-19 | 2013-07-19 | Independent photovoltaic system |
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| CN (1) | CN203445640U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113659674A (en) * | 2021-08-14 | 2021-11-16 | 北京动力京工科技有限公司 | Single-electric core lithium ion battery charging and discharging protector |
-
2013
- 2013-07-19 CN CN201320431196.0U patent/CN203445640U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113659674A (en) * | 2021-08-14 | 2021-11-16 | 北京动力京工科技有限公司 | Single-electric core lithium ion battery charging and discharging protector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140219 Termination date: 20160719 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |