CN115864619A - Weak light power generation system based on solar energy - Google Patents
Weak light power generation system based on solar energy Download PDFInfo
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- CN115864619A CN115864619A CN202211604320.9A CN202211604320A CN115864619A CN 115864619 A CN115864619 A CN 115864619A CN 202211604320 A CN202211604320 A CN 202211604320A CN 115864619 A CN115864619 A CN 115864619A
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Abstract
The invention discloses a solar-based weak light power generation system which comprises a solar panel, a charging control circuit, a storage battery pack and a control unit, wherein a base electrode of a triode of the charging control circuit is connected with a control end of the control unit through a first resistor, the base electrode and a collector are grounded through a third resistor and a fourth resistor respectively, and an emitter is connected with the storage battery pack through a second resistor; the grid electrode of the field effect tube is connected to the emitter of the triode, the source electrode is connected with the storage battery, the drain electrode is connected to the anode of the first diode, and the cathode of the first diode is connected with the anode of the second diode and grounded through the first capacitor; the cathode of the second diode and the cathode of the third diode are both connected to the solar panel, the anode of the third diode is connected with the anode of the first diode, and the cathode of the second diode is connected with the super capacitor with one end grounded. By adopting the scheme, the quick start in a weak light environment can be realized, and the method is very convenient.
Description
Technical Field
The invention relates to the technical field of solar power generation, in particular to a weak light power generation system based on solar energy.
Background
Solar energy is used as clean energy, the application of the solar energy is more and more extensive, and the application fields and the places are more and more. The solar power generation system converts light energy into electric energy through the solar panel and stores the electric energy in the storage battery. At the initial stage of installation and construction, how to automatically and rapidly start a power generation system under the condition of no external power supply is a considerable matter.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a weak light power generation system based on solar energy.
The purpose of the invention is realized by the following technical scheme:
a weak light power generation system based on solar energy comprises a solar panel, a charging control circuit, a storage battery and a control unit,
the charging control circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a first diode, a field effect tube, a second diode, a third diode, a super capacitor, a first capacitor and a triode;
the base electrode of the triode and the collector are respectively grounded through a third resistor and a fourth resistor, and the emitting electrode is connected with the storage battery through a second resistor;
the grid electrode of the field effect tube is connected to the emitter of the triode, the source electrode of the field effect tube is connected with the storage battery, the drain electrode of the field effect tube is connected to the anode of the first diode, and the cathode of the first diode is connected with the anode of the second diode and grounded through the first capacitor; the cathode of the second diode and the cathode of the third diode are both connected to the solar panel, the anode of the third diode is connected with the anode of the first diode, and the cathode of the second diode is connected with the super capacitor with one end grounded.
Preferably, the super capacitor is a tantalum capacitor.
Preferably, the solar panel comprises a substrate, a tin dioxide layer, a PN semiconductor layer, a resin layer, an EVA (ethylene vinyl acetate) adhesive layer and a back plate which are sequentially stacked, wherein a Fresnel lens structure is arranged on one side, connected with the PN semiconductor layer, of the resin layer.
Preferably, an anti-reflection layer is further arranged on the back plate.
Preferably, the control unit is a single chip microcomputer or a PLC.
The invention has the following advantages:
the charging control circuit of the power generation system adopts the circuit structure, can realize quick start in a weak light environment, and is very convenient.
Drawings
FIG. 1 is a schematic diagram of a charge control circuit according to the present invention;
fig. 2 is a schematic structural diagram of a solar panel according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that the products of the present invention conventionally lay out when in use, or orientations or positional relationships that are conventionally understood by those skilled in the art, which are merely for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in FIG. 1, the invention discloses a weak light power generation system based on solar energy, comprising a solar panel, a charging control circuit, a storage battery and a control unit,
the charging control circuit comprises a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first diode D1, a field effect tube M, a second diode D2, a third diode D3, a super capacitor C2, a first capacitor C1 and a triode.
The base electrode of the triode and the collector are respectively grounded through a third resistor and a fourth resistor, and the emitting electrode is connected with the storage battery through a second resistor;
the grid electrode of the field effect tube is connected to the emitter of the triode, the source electrode of the field effect tube is connected with the storage battery, the drain electrode of the field effect tube is connected to the anode of the first diode, and the cathode of the first diode is connected with the anode of the second diode and grounded through the first capacitor; the cathode of the second diode and the cathode of the third diode are both connected to the solar panel, the anode of the third diode is connected with the anode of the first diode, and the cathode of the second diode is connected with the super capacitor with one end grounded.
The weak light power generation system adopts the circuit structure, the first diode D1 and the second diode D2 form a current backflow prevention circuit, and the current backflow prevention circuit avoids the phenomenon that the current flows backwards when no light is emitted to damage a solar cell panel. The second resistor, the fourth resistor and the field effect transistor M form an overvoltage protection function, and when the voltage is ultrahigh, the circuit is cut off. At the beginning, the system is not powered, the signal of the connection end of the first resistor R1 and the control unit is at a low level, the field effect tube M is disconnected, the solar panel can only charge the super capacitor, the capacity of the super capacitor is small, the charging speed is high, and the circuit can be started quickly; along with the increase of the charging quantity of the charging capacitor, the voltage of the first resistor R1 and the connection end of the control unit becomes high level, and the super capacitor is charged normally. The super capacitor is a tantalum capacitor.
Specifically, as shown in fig. 2, the solar panel comprises a substrate 1, a tin dioxide layer 2, a PN semiconductor layer 3, a resin layer 4, an EVA glue layer 5 and a back plate 6 which are sequentially stacked, wherein a fresnel lens structure 41 is arranged on one side of the resin layer 4 connected with the PN semiconductor layer 3. The PN semiconductor layer 3 has multiple layers, and can improve the power generation efficiency. And the back plate is also provided with an anti-reflection layer 7, so that the light transmittance is improved, and the power generation efficiency in a low-light environment is improved.
The control unit is a single chip microcomputer or a PLC.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (5)
1. The utility model provides a weak light power generation system based on solar energy, includes solar panel, charge control circuit, storage battery and the control unit, its characterized in that: the charging control circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a first diode, a field effect tube, a second diode, a third diode, a super capacitor, a first capacitor and a triode;
the base electrode of the triode and the collector are respectively grounded through a third resistor and a fourth resistor, and the emitting electrode is connected with the storage battery through a second resistor;
the grid electrode of the field effect tube is connected to the emitter of the triode, the source electrode of the field effect tube is connected with the storage battery pack, the drain electrode of the field effect tube is connected to the anode of the first diode, and the cathode of the first diode is connected with the anode of the second diode and grounded through the first capacitor; the cathode of the second diode and the cathode of the third diode are both connected to the solar panel, the anode of the third diode is connected with the anode of the first diode, and the cathode of the second diode is connected with the super capacitor with one end grounded.
2. A weak light solar power generation system according to claim 1, wherein: the super capacitor is a tantalum capacitor.
3. A weak light solar power generation system according to claim 1, wherein: the solar panel comprises a substrate, a tin dioxide layer, a PN semiconductor layer, a resin layer, an EVA (ethylene vinyl acetate) adhesive layer and a back plate which are sequentially stacked, wherein a Fresnel lens structure is arranged on one side, connected with the PN semiconductor layer, of the resin layer.
4. A weak light power generation system based on solar energy, according to claim 3, characterized in that: an anti-reflection layer is further arranged on the back plate.
5. A weak light solar power generation system according to claim 1, wherein: the control unit is a single chip microcomputer or a PLC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211604320.9A CN115864619A (en) | 2022-12-13 | 2022-12-13 | Weak light power generation system based on solar energy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211604320.9A CN115864619A (en) | 2022-12-13 | 2022-12-13 | Weak light power generation system based on solar energy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115864619A true CN115864619A (en) | 2023-03-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211604320.9A Pending CN115864619A (en) | 2022-12-13 | 2022-12-13 | Weak light power generation system based on solar energy |
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| Country | Link |
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| CN (1) | CN115864619A (en) |
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- 2022-12-13 CN CN202211604320.9A patent/CN115864619A/en active Pending
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