CN111864879B - Solar power generation circuit - Google Patents
Solar power generation circuit Download PDFInfo
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- CN111864879B CN111864879B CN202010652964.XA CN202010652964A CN111864879B CN 111864879 B CN111864879 B CN 111864879B CN 202010652964 A CN202010652964 A CN 202010652964A CN 111864879 B CN111864879 B CN 111864879B
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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
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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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00302—Overcharge protection
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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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00306—Overdischarge protection
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a solar power generation circuit, which comprises: the device comprises a solar cell panel, a storage battery, a charging circuit, a discharging circuit and a power generation protection circuit; the storage battery is arranged in the power generation protection circuit, the solar panel is connected with the power generation protection circuit through the charging circuit, and the electric energy converted by the solar panel is stored in the storage battery after the overcharge detection of the power generation protection circuit; the discharging circuit is used for supplying power for the external load, is connected with the power generation protection circuit, and supplies power to the external load through the discharging circuit after the storage battery passes through the over-discharge detection of the power generation protection circuit when the external load uses power. The invention can effectively avoid the overcharge and the overdischarge of the storage battery and ensure the stability and the safety of the solar power generation process.
Description
Technical Field
The invention relates to the technical field of solar power generation, in particular to a solar power generation circuit.
Background
Solar energy is a renewable energy source. It refers to the heat radiation energy of the sun, and the main expression is the solar ray. In modern times it is commonly used to generate electricity or to power water heaters. The solar power generation has the advantages of simple process, no mechanical rotating parts, no fuel consumption, no emission of any substance including greenhouse gases, no noise, no pollution, wide distribution of solar resources, inexhaustibility and inexhaustibility. Therefore, solar power generation is widely popularized as a renewable energy power generation technology having the most ideal characteristics of sustainable development.
At present, when solar energy is used for power generation, the following problems exist: in order to store electric energy, a storage battery is usually adopted to store the electric energy converted by the solar cell panel, but in the normal use process, the storage battery needs to be frequently charged and discharged, once the storage battery is overcharged or overdischarged, the service life of the storage battery and the stability of a solar power generation circuit are seriously influenced, and even certain potential safety hazards exist. Therefore, how to ensure the stability and safety of the solar power generation process is a problem to be solved urgently.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a solar power generation circuit, which can effectively avoid overcharge and overdischarge of a storage battery, and ensure stability and safety of a solar power generation process.
In order to achieve the purpose, the invention is realized by the following technical scheme: a solar power generation circuit comprising: the device comprises a solar cell panel, a storage battery, a charging circuit, a discharging circuit and a power generation protection circuit; the storage battery is arranged in the power generation protection circuit, and the power generation protection circuit is used for carrying out overcharge and over-discharge protection on the storage battery; the solar panel is connected with the power generation protection circuit through the charging circuit, and the electric energy converted by the solar panel is stored in the storage battery after the overcharge detection of the power generation protection circuit; the discharging circuit is used for supplying power for the external load, is connected with the power generation protection circuit, and supplies power to the external load through the discharging circuit after the storage battery passes through the over-discharge detection of the power generation protection circuit when the external load uses power.
Further, the charging circuit includes: the solar energy battery panel PV, the charging management chip U1, the resistor R1, the resistor R2, the resistor R3, the capacitor C1, the capacitor C2, the light-emitting diode LED1 and the light-emitting diode LED 2;
one pin of the charging management chip U1 is connected with the anode of the solar panel PV, one end of the capacitor C1 and one end of the resistor R1 respectively, two pins of the charging management chip U1 are connected with the cathode of the light-emitting diode LED1, three pins of the charging management chip U1 are connected with the cathode of the light-emitting diode LED2, and the other end of the resistor R1 is connected with the anode of the light-emitting diode LED1 and the anode of the light-emitting diode LED2 respectively; four pins of the charging management chip U1 are grounded, five pins of the charging management chip U1 are connected with one end of a resistor R2, and six pins of the charging management chip U1 are respectively connected with the other end of a resistor R2, one end of a capacitor C2 and a power generation protection circuit; eight pins of the charging management chip U1 are connected with one end of a resistor R3, seven pins of the charging management chip U1 are respectively connected with the other end of a capacitor C2, the other end of a resistor R3, four pins of the charging management chip U1 and a power generation protection circuit; the negative electrode of the solar cell panel PV is connected to the other end of the capacitor C1 and the four pins of the charge management chip U1.
Further, the power generation protection circuit includes: the charging and discharging protection circuit comprises a storage battery B, a charging and discharging protection chip U2, a field-effect tube Q1, a field-effect tube Q2, a capacitor C3, a resistor R4 and a resistor R5;
one pin of the charge-discharge protection chip U2 is connected with the grid of the field-effect tube Q1, two pins of the charge-discharge protection chip U2 are connected with one end of the resistor R4, three pins of the charge-discharge protection chip U2 are connected with the grid of the field-effect tube Q2, four pins of the charge-discharge protection chip U2 are respectively connected with the source of the field-effect tube Q1, one end of the capacitor C3 and the negative electrode of the storage battery B, and five pins of the charge-discharge protection chip U2 are respectively connected with the other end of the capacitor C3 and one end of the resistor R5; the positive electrode of the storage battery B is respectively connected with the other end of the resistor R5, the six pins of the charging management chip U1 and the discharge circuit; the drain of the field effect transistor Q1 is connected with the drain of the field effect transistor Q2, and the source of the field effect transistor Q2 is connected with the other end of the resistor R4, the seven pins of the charge management chip U1 and the discharge circuit.
Further, the discharge circuit includes: the voltage conversion circuit comprises a voltage conversion chip U3, a diode D, an inductor L, a capacitor C4, a capacitor C5, a capacitor C6, a resistor R6, a resistor R7 and a resistor R8;
one pin of the voltage conversion chip U3 is respectively connected with two pins of the voltage conversion chip U3, the anode of the storage battery B, one end of the capacitor C5, one end of the capacitor C6 and one end of the inductor L; the three pins of the voltage conversion chip U3 are connected with one end of a resistor R7, and the four pins of the voltage conversion chip U3 are respectively connected with the other end of a capacitor C5, the other end of a capacitor C6, the other end of a resistor R7, one end of a resistor R8, one end of a capacitor C4 and the source of a field effect transistor Q2; the five pins of the voltage conversion chip U3 are connected to the other end of the inductor L and the anode of the diode D, respectively. The six pins of the voltage conversion chip U3 are respectively connected with one end of the resistor R6 and the other end of the resistor R8; the cathode of the diode D is connected to the other end of the resistor R6 and the other end of the capacitor C4, respectively.
Further, the LED1 and the LED2 are used to display the charging status, when the LED1 is turned on, the solar cell panel starts to charge the battery through the charging circuit, when the LED LDE2 is turned on, the battery is fully charged, and the charging cycle is ended.
Further, the charging management chip U1 adopts a charging management chip with model number CN 3082.
Furthermore, the charging and discharging protection chip U2 is a battery protection chip with model S8261.
Further, the voltage conversion chip U3 adopts a voltage boost chip with model TD 8228.
Compared with the prior art, the invention has the beneficial effects that: the invention provides a solar power generation circuit which can convert solar energy into electric energy to charge a storage battery, and meanwhile, the storage battery can be used as a power supply to supply power for an external load. The invention realizes the real-time monitoring of the working states of the storage battery and the solar cell panel in the solar power generation process, and adjusts the overcharge and the overdischarge of the storage battery according to the monitoring result, thereby prolonging the service life of the storage battery and ensuring the stability and the safety of the solar power generation process.
In addition, the circuit provided by the invention is simple and reasonable in structure, and can be widely applied to the design of the solar mobile power supply.
Therefore, compared with the prior art, the invention has prominent substantive features and remarkable progress, and the beneficial effects of the implementation are also obvious.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is an electrical block diagram of the present invention.
Fig. 2 is a schematic diagram of the charging circuit structure of the present invention.
Fig. 3 is a schematic diagram of the power generation protection circuit of the present invention.
Fig. 4 is a schematic diagram of the discharge circuit of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings.
A solar power generation circuit as shown in fig. 1, comprising: the device comprises a solar cell panel, a storage battery, a charging circuit, a discharging circuit and a power generation protection circuit; the storage battery is arranged in the power generation protection circuit, and the power generation protection circuit is used for carrying out overcharge and over-discharge protection on the storage battery; the solar panel is connected with the power generation protection circuit through the charging circuit, and the electric energy converted by the solar panel is stored in the storage battery after the overcharge detection of the power generation protection circuit; the discharging circuit is used for supplying power for the external load, is connected with the power generation protection circuit, and supplies power to the external load through the discharging circuit after the storage battery passes through the over-discharge detection of the power generation protection circuit when the external load uses power.
As shown in fig. 2, the charging circuit includes: the solar energy battery panel PV, the charging management chip U1, the resistor R1, the resistor R2, the resistor R3, the capacitor C1, the capacitor C2, the light-emitting diode LED1 and the light-emitting diode LED 2;
one pin of the charging management chip U1 is connected with the anode of the solar panel PV, one end of the capacitor C1 and one end of the resistor R1 respectively, two pins of the charging management chip U1 are connected with the cathode of the light-emitting diode LED1, three pins of the charging management chip U1 are connected with the cathode of the light-emitting diode LED2, and the other end of the resistor R1 is connected with the anode of the light-emitting diode LED1 and the anode of the light-emitting diode LED2 respectively; four pins of the charging management chip U1 are grounded, five pins of the charging management chip U1 are connected with one end of a resistor R2, and six pins of the charging management chip U1 are respectively connected with the other end of a resistor R2, one end of a capacitor C2 and a power generation protection circuit; eight pins of the charging management chip U1 are connected with one end of a resistor R3, seven pins of the charging management chip U1 are respectively connected with the other end of a capacitor C2, the other end of a resistor R3, four pins of the charging management chip U1 and a power generation protection circuit; the negative electrode of the solar cell panel PV is connected to the other end of the capacitor C1 and the four pins of the charge management chip U1.
The charging management chip U1 is a charging management chip with model number CN 3082. The LED1 and the LED2 are used to display the charging status, when the LED1 is turned on, the solar panel starts to charge the battery through the charging circuit, when the LED LDE2 is turned on, the battery is fully charged, and the charging cycle is ended.
As shown in fig. 3, the power generation protection circuit includes: the charging and discharging protection circuit comprises a storage battery B, a charging and discharging protection chip U2, a field-effect tube Q1, a field-effect tube Q2, a capacitor C3, a resistor R4 and a resistor R5; one pin of the charge-discharge protection chip U2 is connected with the grid of the field-effect tube Q1, two pins of the charge-discharge protection chip U2 are connected with one end of the resistor R4, three pins of the charge-discharge protection chip U2 are connected with the grid of the field-effect tube Q2, four pins of the charge-discharge protection chip U2 are respectively connected with the source of the field-effect tube Q1, one end of the capacitor C3 and the negative electrode of the storage battery B, and five pins of the charge-discharge protection chip U2 are respectively connected with the other end of the capacitor C3 and one end of the resistor R5; the positive electrode of the storage battery B is respectively connected with the other end of the resistor R5, the six pins of the charging management chip U1 and the discharge circuit; the drain of the field effect transistor Q1 is connected with the drain of the field effect transistor Q2, and the source of the field effect transistor Q2 is connected with the other end of the resistor R4, the seven pins of the charge management chip U1 and the discharge circuit. The charging and discharging protection chip U2 is a battery protection chip with model number S8261.
In the charging process, when the voltage of the storage battery exceeds the rated voltage, the charging and discharging protection chip U2 controls the field-effect transistor Q2 to be cut off, so that the charging circuit is disconnected, and the overcharge protection of the storage battery is realized. In the discharging process, when the voltage of the storage battery is smaller than the preset minimum voltage, the charging and discharging protection chip U2 controls the field-effect transistor Q1 to be cut off, so that the discharging circuit is disconnected, and the over-discharging protection of the storage battery is realized.
As shown in fig. 4, the discharge circuit includes: the voltage conversion circuit comprises a voltage conversion chip U3, a diode D, an inductor L, a capacitor C4, a capacitor C5, a capacitor C6, a resistor R6, a resistor R7 and a resistor R8; one pin of the voltage conversion chip U3 is respectively connected with two pins of the voltage conversion chip U3, the anode of the storage battery B, one end of the capacitor C5, one end of the capacitor C6 and one end of the inductor L; the three pins of the voltage conversion chip U3 are connected with one end of a resistor R7, and the four pins of the voltage conversion chip U3 are respectively connected with the other end of a capacitor C5, the other end of a capacitor C6, the other end of a resistor R7, one end of a resistor R8, one end of a capacitor C4 and the source of a field effect transistor Q2; the five pins of the voltage conversion chip U3 are connected to the other end of the inductor L and the anode of the diode D, respectively. The six pins of the voltage conversion chip U3 are respectively connected with one end of the resistor R6 and the other end of the resistor R8; the cathode of the diode D is connected to the other end of the resistor R6 and the other end of the capacitor C4, respectively. The voltage conversion chip U3 adopts a voltage boosting chip with the model TD 8228.
In practical use, the V + position in the figure is connected with the positive pole of the load, and the V-position is connected with the negative pole of the load.
The invention is further described with reference to the accompanying drawings and specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the present application.
Claims (6)
1. A solar power generation circuit, comprising: the device comprises a solar cell panel, a storage battery, a charging circuit, a discharging circuit and a power generation protection circuit; the storage battery is arranged in the power generation protection circuit, and the power generation protection circuit is used for carrying out overcharge and over-discharge protection on the storage battery; the solar panel is connected with the power generation protection circuit through the charging circuit, and the electric energy converted by the solar panel is stored in the storage battery after the overcharge detection of the power generation protection circuit; the discharging circuit is used for supplying power to an external load, the discharging circuit is connected with the power generation protection circuit, and when the external load uses power, the storage battery supplies power to the external load through the discharging circuit after passing through the over-discharge detection of the power generation protection circuit;
the charging circuit includes: the solar energy battery panel PV, the charging management chip U1, the resistor R1, the resistor R2, the resistor R3, the capacitor C1, the capacitor C2, the light-emitting diode LED1 and the light-emitting diode LED 2;
one pin of the charging management chip U1 is connected with the anode of the solar panel PV, one end of the capacitor C1 and one end of the resistor R1 respectively, two pins of the charging management chip U1 are connected with the cathode of the light-emitting diode LED1, three pins of the charging management chip U1 are connected with the cathode of the light-emitting diode LED2, and the other end of the resistor R1 is connected with the anode of the light-emitting diode LED1 and the anode of the light-emitting diode LED2 respectively; four pins of the charging management chip U1 are grounded, five pins of the charging management chip U1 are connected with one end of a resistor R2, and six pins of the charging management chip U1 are respectively connected with the other end of a resistor R2, one end of a capacitor C2 and a power generation protection circuit; eight pins of the charging management chip U1 are connected with one end of a resistor R3, seven pins of the charging management chip U1 are respectively connected with the other end of a capacitor C2, the other end of a resistor R3, four pins of the charging management chip U1 and a power generation protection circuit; the negative electrode of the solar cell panel PV is respectively connected with the other end of the capacitor C1 and the four pins of the charging management chip U1;
the power generation protection circuit includes: the charging and discharging protection circuit comprises a storage battery B, a charging and discharging protection chip U2, a field-effect tube Q1, a field-effect tube Q2, a capacitor C3, a resistor R4 and a resistor R5;
one pin of the charge-discharge protection chip U2 is connected with the grid of the field-effect tube Q1, two pins of the charge-discharge protection chip U2 are connected with one end of the resistor R4, three pins of the charge-discharge protection chip U2 are connected with the grid of the field-effect tube Q2, four pins of the charge-discharge protection chip U2 are respectively connected with the source of the field-effect tube Q1, one end of the capacitor C3 and the negative electrode of the storage battery B, and five pins of the charge-discharge protection chip U2 are respectively connected with the other end of the capacitor C3 and one end of the resistor R5; the positive electrode of the storage battery B is respectively connected with the other end of the resistor R5, the six pins of the charging management chip U1 and the discharge circuit; the drain of the field effect transistor Q1 is connected with the drain of the field effect transistor Q2, and the source of the field effect transistor Q2 is connected with the other end of the resistor R4, the seven pins of the charge management chip U1 and the discharge circuit.
2. The solar power generation circuit of claim 1, wherein the discharge circuit comprises: the voltage conversion circuit comprises a voltage conversion chip U3, a diode D, an inductor L, a capacitor C4, a capacitor C5, a capacitor C6, a resistor R6, a resistor R7 and a resistor R8;
one pin of the voltage conversion chip U3 is respectively connected with two pins of the voltage conversion chip U3, the anode of the storage battery B, one end of the capacitor C5, one end of the capacitor C6 and one end of the inductor L; the three pins of the voltage conversion chip U3 are connected with one end of a resistor R7, and the four pins of the voltage conversion chip U3 are respectively connected with the other end of a capacitor C5, the other end of a capacitor C6, the other end of a resistor R7, one end of a resistor R8, one end of a capacitor C4 and the source of a field effect transistor Q2; the five pins of the voltage conversion chip U3 are respectively connected with the other end of the inductor L and the anode of the diode D; the six pins of the voltage conversion chip U3 are respectively connected with one end of the resistor R6 and the other end of the resistor R8; the cathode of the diode D is connected to the other end of the resistor R6 and the other end of the capacitor C4, respectively.
3. The solar power generation circuit of claim 1, wherein the light emitting diodes LED1 and LED2 are used to display the charging status, when the LED1 is turned on, the solar panel starts to charge the battery through the charging circuit, when the LED LDE2 is turned on, the battery is fully charged and the charging cycle is over.
4. The solar power generation circuit according to claim 1, wherein the charging management chip U1 is a charging management chip of model CN 3082.
5. The solar power generation circuit according to claim 1, wherein the charge and discharge protection chip U2 is a battery protection chip of type S8261.
6. The solar power generation circuit of claim 2, wherein the voltage conversion chip U3 is a voltage boost chip with model TD 8228.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010652964.XA CN111864879B (en) | 2020-07-08 | 2020-07-08 | Solar power generation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010652964.XA CN111864879B (en) | 2020-07-08 | 2020-07-08 | Solar power generation circuit |
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| Publication Number | Publication Date |
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| CN111864879A CN111864879A (en) | 2020-10-30 |
| CN111864879B true CN111864879B (en) | 2021-11-19 |
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| CN202010652964.XA Active CN111864879B (en) | 2020-07-08 | 2020-07-08 | Solar power generation circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6914412B2 (en) * | 2003-05-21 | 2005-07-05 | Nanoset, Llc | Assembly for utilizing residual battery energy |
| CN203206558U (en) * | 2013-04-25 | 2013-09-18 | 苏州翔硕电子有限公司 | Low-power solar automatic illumination circuit |
| CN104393658B (en) * | 2014-11-17 | 2017-07-14 | 北京纳米能源与系统研究所 | A kind of energy management circuit |
| CN205430123U (en) * | 2015-12-17 | 2016-08-03 | 王华强 | Solar energy is to charge controllers of load |
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