CN218995945U - Photovoltaic output voltage stabilizing circuit - Google Patents
Photovoltaic output voltage stabilizing circuit Download PDFInfo
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- CN218995945U CN218995945U CN202223389738.0U CN202223389738U CN218995945U CN 218995945 U CN218995945 U CN 218995945U CN 202223389738 U CN202223389738 U CN 202223389738U CN 218995945 U CN218995945 U CN 218995945U
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Abstract
The utility model discloses a photovoltaic output voltage stabilizing circuit, which relates to the field of photovoltaic power supply, and comprises: the photovoltaic power supply module is used for converting solar energy into electric energy and outputting the electric energy to the voltage output module and the safety protection module; the voltage output module is used for outputting voltage to supply power for a load; the feedback regulation module is used for sampling the output voltage of the voltage output module, carrying out feedback regulation on the output voltage and constructing voltage-stabilizing output; compared with the prior art, the utility model has the beneficial effects that: the utility model is provided with the safety protection module, and the output voltage of the photovoltaic power supply module is compared with the voltage information of the output voltage of the voltage output module, so that the condition that the demand voltage cannot be supplied when the output voltage is excessively regulated is prevented, the power consumption demand of a load is difficult to meet, the power consumption of the load is abnormal, a power supply loop between the voltage output module and the load is disconnected in time, and the power supply safety is ensured.
Description
Technical Field
The utility model relates to the field of photovoltaic power supply, in particular to a photovoltaic output voltage stabilizing circuit.
Background
Photovoltaic power generation is a technology that uses the photovoltaic effect of a semiconductor interface to directly convert light energy into electrical energy. The solar cells are packaged and protected after being connected in series to form a large-area solar cell module, and then the solar cell module is matched with components such as a power controller and the like to form the photovoltaic power generation device.
The existing photovoltaic output stable voltage is often provided with a voltage regulating circuit, different power utilization loads are matched, the voltage regulation of the voltage regulating circuit cannot meet the requirements of the power utilization loads, a user cannot know the information, the power utilization loads work abnormally, and improvement is needed.
Disclosure of Invention
The utility model aims to provide a photovoltaic output voltage stabilizing circuit for solving the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
a photovoltaic output voltage regulator circuit comprising:
the photovoltaic power supply module is used for converting solar energy into electric energy and outputting the electric energy to the voltage output module and the safety protection module;
the voltage output module is used for outputting voltage to supply power for a load;
the feedback regulation module is used for sampling the output voltage of the voltage output module, carrying out feedback regulation on the output voltage and constructing voltage-stabilizing output;
the safety protection module is used for controlling whether the voltage output module supplies power to the load according to the output voltage of the photovoltaic power supply module and the output voltage information of the voltage output module;
the photovoltaic power supply module is connected with the voltage output module and the safety protection module, the voltage output module is connected with the feedback adjustment, and the safety protection module is connected with the voltage output module.
As still further aspects of the utility model: the photovoltaic power supply module comprises a solar cell E1, a diode D2, a capacitor C1 and a resistor R1, wherein the negative electrode of the solar cell E1 is grounded, the positive electrode of the solar cell E1 is connected with the positive electrode of the diode D1, the negative electrode of the diode D1 is connected with the positive electrode of the diode D2, one end of the capacitor C1 and one end of the resistor R1, the negative electrode of the diode D2 is grounded, the other end of the capacitor C1 is grounded, and the other end of the resistor R1 is connected with the voltage output module and the safety protection module.
As still further aspects of the utility model: the voltage output module comprises a resistor R2, a diode D3, an amplifier U1, a triode V1 and a MOS tube V2, wherein one end of the resistor R2 is connected with a collector of the triode V1 and a photovoltaic power supply module, the other end of the resistor R2 is connected with a cathode of the diode D3 and an in-phase end of the amplifier U1, an anode of the diode D3 is grounded, an inverting end of the amplifier U1 is connected with a feedback regulation module, an output end of the amplifier U1 is connected with a base of the triode V1, an emitter of the triode V1 is connected with a D electrode of the MOS tube V2, a G electrode of the MOS tube V2 is connected with a safety protection module, and an S electrode of the MOS tube V2 outputs voltage VCC.
As still further aspects of the utility model: the feedback regulation module comprises a potentiometer RP1, a resistor R3, a resistor R4 and a capacitor C2, wherein one end of the potentiometer RP1 is connected with the voltage output module, the other end of the potentiometer RP1 is connected with one end of the resistor R3, the other end of the resistor R3 is connected with one end of the resistor R4, one end of the capacitor C2 and the voltage output module, the other end of the resistor R4 is grounded, and the other end of the capacitor C2 is grounded.
As still further aspects of the utility model: the safety protection module comprises a resistor R5, a resistor R6, an amplifier U2, a diode D4, a capacitor C3 and a resistor R7, wherein one end of the resistor R5 is connected with the photovoltaic power supply module, the other end of the resistor R5 is connected with one end of the resistor R6, the same-phase end of the amplifier U2 is grounded, the other end of the resistor R6 is grounded, the opposite-phase end of the amplifier U2 is connected with the voltage output module, the output end of the amplifier U2 is connected with the positive electrode of the diode D4, the negative electrode of the diode D4 is connected with one end of the capacitor C3, one end of the resistor R7 and the voltage output module, the other end of the capacitor C3 is grounded, and the other end of the resistor R7 is grounded.
Compared with the prior art, the utility model has the beneficial effects that: the utility model is provided with the safety protection module, and the output voltage of the photovoltaic power supply module is compared with the voltage information of the output voltage of the voltage output module, so that the condition that the demand voltage cannot be supplied when the output voltage is excessively regulated is prevented, the power consumption demand of a load is difficult to meet, the power consumption of the load is abnormal, a power supply loop between the voltage output module and the load is disconnected in time, and the power supply safety is ensured.
Drawings
Fig. 1 is a schematic diagram of a photovoltaic output voltage regulator circuit.
Fig. 2 is a circuit diagram of a photovoltaic output voltage stabilizing circuit.
Fig. 3 is a pin diagram of the amplifier LM 358.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present utility model are included in the protection scope of the present utility model.
Referring to fig. 1, a photovoltaic output voltage stabilizing circuit includes:
the photovoltaic power supply module is used for converting solar energy into electric energy and outputting the electric energy to the voltage output module and the safety protection module;
the voltage output module is used for outputting voltage to supply power for a load;
the feedback regulation module is used for sampling the output voltage of the voltage output module, carrying out feedback regulation on the output voltage and constructing voltage-stabilizing output;
the safety protection module is used for controlling whether the voltage output module supplies power to the load according to the output voltage of the photovoltaic power supply module and the output voltage information of the voltage output module;
the photovoltaic power supply module is connected with the voltage output module and the safety protection module, the voltage output module is connected with the feedback adjustment, and the safety protection module is connected with the voltage output module.
In this embodiment: referring to fig. 2, the photovoltaic power module includes a solar cell E1, a diode D2, a capacitor C1, and a resistor R1, where the negative electrode of the solar cell E1 is grounded, the positive electrode of the solar cell E1 is connected to the positive electrode of the diode D1, the negative electrode of the diode D1 is connected to the positive electrode of the diode D2, one end of the capacitor C1, one end of the resistor R1, the negative electrode of the diode D2 is grounded, the other end of the capacitor C1 is grounded, and the other end of the resistor R1 is connected to the voltage output module and the safety protection module.
The solar battery E1 converts solar energy into electric energy, the capacitor C1 is a gold capacitor, the storage voltage is used for supplying power for a subsequent circuit, the diode D1 is used for preventing backflow, and the diode D2 indicates the working state of the solar battery E1.
In this embodiment: referring to fig. 2 and 3, the voltage output module includes a resistor R2, a diode D3, an amplifier U1, a triode V1, and a MOS tube V2, wherein one end of the resistor R2 is connected to a collector of the triode V1, a photovoltaic power supply module, the other end of the resistor R2 is connected to a cathode of the diode D3, an in-phase end of the amplifier U1, an anode of the diode D3 is grounded, an inverting end of the amplifier U1 is connected to a feedback regulation module, an output end of the amplifier U1 is connected to a base of the triode V1, an emitter of the triode V1 is connected to a D pole of the MOS tube V2, a G pole of the MOS tube V2 is connected to a safety protection module, and an S pole of the MOS tube V2 outputs a voltage VCC.
The amplifier U1 outputs high level, the triode V1 is conducted, and the load is supplied with power through the MOS tube V2. The model numbers of the amplifiers U1 and U2 are LM358, two amplifiers are arranged in the LM328, and one LM358 can meet the requirement of the amplifier.
In this embodiment: referring to fig. 2, the feedback adjustment module includes a potentiometer RP1, a resistor R3, a resistor R4, and a capacitor C2, wherein one end of the potentiometer RP1 is connected to the voltage output module, the other end of the potentiometer RP1 is connected to one end of the resistor R3, the other end of the resistor R3 is connected to one end of the resistor R4, one end of the capacitor C2, and the voltage output module, the other end of the resistor R4 is grounded, and the other end of the capacitor C2 is grounded.
The sum of the voltages on the potentiometer RP1, the resistor R3 and the resistor R4 is the output voltage of the voltage output module, the resistor R4 is a sampling resistor, and the voltage is sampled, and as the voltage at the same phase end and the voltage at the opposite phase end of the amplifier are equal, the voltage on the resistor R4 is a determined voltage, namely the voltage on the zener diode D3, and the output voltage of the voltage output module can be changed by adjusting the resistance value of the potentiometer RP 1.
In this embodiment: referring to fig. 2, the safety protection module includes a resistor R5, a resistor R6, an amplifier U2, a diode D4, a capacitor C3, and a resistor R7, wherein one end of the resistor R5 is connected to the photovoltaic power supply module, the other end of the resistor R5 is connected to one end of the resistor R6, the same phase end of the amplifier U2, the other end of the resistor R6 is grounded, the opposite phase end of the amplifier U2 is connected to the voltage output module, the output end of the amplifier U2 is connected to the positive electrode of the diode D4, the negative electrode of the diode D4 is connected to one end of the capacitor C3, one end of the resistor R7, and the voltage output module, the other end of the capacitor C3 is grounded, and the other end of the resistor R7 is grounded.
When the output voltage of the voltage output module is regulated, the voltage regulation failure possibly occurs, and the voltage exceeds the power supply voltage of the photovoltaic power supply module, so that when the sampling voltage (the voltage on the resistor R6) of the photovoltaic power supply voltage is ensured to be larger than the output voltage of the voltage output module, the amplifier U2 outputs a high level, the MOS tube V2 is triggered to be conducted, and the power is supplied to the power utilization load.
The working principle of the utility model is as follows: the photovoltaic power supply module converts solar energy into electric energy and outputs the electric energy to the voltage output module and the safety protection module; the voltage output module outputs voltage to supply power for the load; the feedback regulation module samples the output voltage of the voltage output module, and carries out feedback regulation on the output voltage to construct voltage-stabilizing output; the safety protection module controls whether the voltage output module supplies power to the load according to the output voltage of the photovoltaic power supply module and the output voltage information of the voltage output module.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (5)
1. The utility model provides a photovoltaic output voltage stabilizing circuit which characterized in that:
the photovoltaic output voltage stabilizing circuit comprises:
the photovoltaic power supply module is used for converting solar energy into electric energy and outputting the electric energy to the voltage output module and the safety protection module;
the voltage output module is used for outputting voltage to supply power for a load;
the feedback regulation module is used for sampling the output voltage of the voltage output module, carrying out feedback regulation on the output voltage and constructing voltage-stabilizing output;
the safety protection module is used for controlling whether the voltage output module supplies power to the load according to the output voltage of the photovoltaic power supply module and the output voltage information of the voltage output module;
the photovoltaic power supply module is connected with the voltage output module and the safety protection module, the voltage output module is connected with the feedback adjustment, and the safety protection module is connected with the voltage output module.
2. The photovoltaic output voltage stabilizing circuit according to claim 1, wherein the photovoltaic power supply module comprises a solar cell E1, a diode D2, a capacitor C1 and a resistor R1, wherein the negative electrode of the solar cell E1 is grounded, the positive electrode of the solar cell E1 is connected with the positive electrode of the diode D1, the negative electrode of the diode D1 is connected with the positive electrode of the diode D2, one end of the capacitor C1 and one end of the resistor R1, the negative electrode of the diode D2 is grounded, the other end of the capacitor C1 is grounded, and the other end of the resistor R1 is connected with the voltage output module and the safety protection module.
3. The photovoltaic output voltage stabilizing circuit according to claim 1, wherein the voltage output module comprises a resistor R2, a diode D3, an amplifier U1, a triode V1, a MOS tube V2, wherein one end of the resistor R2 is connected with a collector of the triode V1, the photovoltaic power supply module, the other end of the resistor R2 is connected with a cathode of the diode D3 and an in-phase end of the amplifier U1, an anode of the diode D3 is grounded, an inverting end of the amplifier U1 is connected with the feedback regulation module, an output end of the amplifier U1 is connected with a base of the triode V1, an emitter of the triode V1 is connected with a D pole of the MOS tube V2, a G pole of the MOS tube V2 is connected with the safety protection module, and an S pole of the MOS tube V2 outputs a voltage VCC.
4. The photovoltaic output voltage stabilizing circuit according to claim 1, wherein the feedback adjustment module comprises a potentiometer RP1, a resistor R3, a resistor R4, and a capacitor C2, one end of the potentiometer RP1 is connected to the voltage output module, the other end of the potentiometer RP1 is connected to one end of the resistor R3, the other end of the resistor R3 is connected to one end of the resistor R4, one end of the capacitor C2, the voltage output module, the other end of the resistor R4 is grounded, and the other end of the capacitor C2 is grounded.
5. The photovoltaic output voltage stabilizing circuit according to claim 1 or 3, wherein the safety protection module comprises a resistor R5, a resistor R6, an amplifier U2, a diode D4, a capacitor C3 and a resistor R7, wherein one end of the resistor R5 is connected with the photovoltaic power supply module, the other end of the resistor R5 is connected with one end of the resistor R6 and the same-phase end of the amplifier U2, the other end of the resistor R6 is grounded, the opposite-phase end of the amplifier U2 is connected with the voltage output module, the output end of the amplifier U2 is connected with the positive electrode of the diode D4, the negative electrode of the diode D4 is connected with one end of the capacitor C3, one end of the resistor R7 and the voltage output module, the other end of the capacitor C3 is grounded, and the other end of the resistor R7 is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223389738.0U CN218995945U (en) | 2022-12-17 | 2022-12-17 | Photovoltaic output voltage stabilizing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223389738.0U CN218995945U (en) | 2022-12-17 | 2022-12-17 | Photovoltaic output voltage stabilizing circuit |
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| Publication Number | Publication Date |
|---|---|
| CN218995945U true CN218995945U (en) | 2023-05-09 |
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| CN202223389738.0U Active CN218995945U (en) | 2022-12-17 | 2022-12-17 | Photovoltaic output voltage stabilizing circuit |
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