Voltage regulation circuit for photovoltaic power generation

Abstract

The utility model discloses a voltage regulation circuit for photovoltaic power generation, which relates to the technical field of photovoltaic power generation and comprises a photovoltaic module for photoelectric conversion; the voltage regulation module is used for voltage stabilization regulation; the output control module is used for filtering and output superposition control; the charging and discharging module is used for controlling transmission of electric energy and controlling energy storage and discharging work of the energy storage module; the boost control module is used for carrying out full charge detection on the energy storage module and controlling the charge and discharge module to carry out discharge control; and the output module is used for receiving electric energy. The voltage regulation circuit for photovoltaic power generation can carry out voltage stabilization regulation, when the voltage regulation module stops power supply, the energy storage module carries out standby power supply, power supply requirements are met, power supply efficiency is improved, and when voltage boosting is needed and the energy storage module is fully charged, superposition processing is carried out in cooperation with electric energy voltage output by the output control module and the voltage regulation module. Therefore, required electric energy is provided for the output module, and the power supply voltage range is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic power generation technical field, concretely is a kind of photovoltaic power generation voltage regulating circuit. BACKGROUND

[0002] Solar energy is widely used in communication, petroleum, ocean, weather, photovoltaic power station, automobile and other major fields due to its advantages of renewable, non-pollution, high reliability, high flexibility and strong economy, and photovoltaic power generation is the main utilization form of solar energy. To improve the power supply efficiency of photovoltaic, the voltage regulating circuit of photovoltaic power generation in the prior art uses related DC-DC conversion chips for step-down DC-DC control to meet the power supply demand of electrical equipment. However, the voltage range provided by the voltage regulating circuit of photovoltaic power generation using related DC-DC conversion chips is limited, and therefore needs to be improved. SUMMARY

[0003] The utility model embodiment provides a kind of photovoltaic power generation voltage regulating circuit to solve the problems raised in the above background technique.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] A kind of photovoltaic power generation voltage regulating circuit, comprising: photovoltaic module, voltage regulating module, output control module, charge-discharge module, energy storage module, boost control module and output module;

[0006] Photovoltaic module is used for photoelectric conversion and outputs first electric energy;

[0007] Voltage regulating module is connected with the photovoltaic module, for voltage stabilizing regulation to first electric energy and outputs second electric energy;

[0008] Output control module is connected with the voltage regulating module, boost control module and charge-discharge module, for the filter processing of second electric energy, when receiving the first control signal output by boost control module, the standby electric energy transmitted by charge-discharge module is superimposed with second electric energy and output third electric energy;

[0009] Charge-discharge module is connected with the voltage regulating module, energy storage module and output module, for transmitting second electric energy to energy storage module, and transmitting standby electric energy provided by energy storage module to output module when not receiving second electric energy, transmitting standby electric energy to output control module when receiving first control signal;

[0010] Energy storage module is used for storing second electric energy transmitted by charge-discharge module and providing standby electric energy;

[0011] The boost control module is connected with the voltage regulation module and the charge-discharge module, and is used for voltage detection of the energy storage module, and when the detected voltage signal is higher than a set full power threshold and boost control is needed, a first control signal is output, and when the voltage signal is lower than a set low voltage threshold or no second electric energy is received, the output of the first control signal is stopped.

[0012] The output module is connected with the output control module and the voltage regulation module, and is used for receiving the second electric energy, the third electric energy or the standby electric energy and supplying power for the connected electronic device.

[0013] As a further scheme of the utility model: photovoltaic module includes photovoltaic power generation board and first capacitor;The voltage regulation module includes first resistance, second resistance, third resistance, first voltage stabilizer, fourth resistance, second diode, first inductor, first diode, second capacitor and eighth resistance;

[0014] Preferably, the first end of the photovoltaic power generation board is connected with one end of the fourth resistance, the sixth end of the first voltage stabilizer and one end of the first capacitor, and the third end of the first voltage stabilizer and one end of the second resistance are connected through the first resistance, the other end of the second resistance is connected with the seventh end of the first voltage stabilizer and the fourth end of the first voltage stabilizer, the other end of the first capacitor, the anode of the first diode, one end of the second capacitor, the second end of the photovoltaic power generation board and the ground end are connected through the third resistance, the other end of the fourth resistance is connected with the eighth end and the second end of the first voltage stabilizer, the first end of the first voltage stabilizer is connected with the anode of the second diode, the first end of the eighth resistance and the other end of the second capacitor, and the cathode of the first diode and the fifth end of the first voltage stabilizer are connected through the first inductor, the second end of the eighth resistance is connected with the charge-discharge module and the boost control module, and the cathode of the second diode is connected with the output control module.

[0015] As a further scheme of the utility model: the output control module includes fifth resistance, first switch tube, sixth resistance, first thyristor, second thyristor, fourth capacitor and third capacitor;The output module includes output port;

[0016] Preferably, the control end of the first thyristor is connected with the collector of the first switch tube and connected with one end of the third capacitor, the cathode of the second diode and the first end of the output port through the fifth resistance, the other end of the third capacitor is connected with one end of the second thyristor and one end of the first thyristor, the other end of the second thyristor is connected with the first end of the fourth capacitor and the charge-discharge module, the other end of the first thyristor is connected with the emitter of the first switch tube, the second end of the output port and the anode of the first diode, the base of the first switch tube is connected with the first end of the sixth resistance, and the second end of the sixth resistance is connected with the control end of the second thyristor and the boost control module.

[0017] As a further scheme of the utility model: the charge and discharge module comprises a first power tube; the energy storage module comprises an energy storage device;

[0018] Preferably, the drain of the first power tube is connected with the first end of the energy storage device, the source of the first power tube is connected with the first end of the fourth capacitor, the gate of the first power tube is connected with the second end of the sixth resistor and the boost control module, and the second end of the energy storage device is connected with the collector of the first switch tube.

[0019] As a further scheme of the utility model: the charge and discharge module further comprises a second power tube, a seventh resistor and a second switch tube;

[0020] Preferably, the source of the second power tube is connected with the first end of the output port, the drain of the second power tube is connected with the first end of the energy storage device and the gate of the second power tube and the collector of the second switch tube through the seventh resistor, the emitter of the second switch tube is connected with the second end of the energy storage device, and the base of the second switch tube is connected with the second end of the eighth resistor and the boost control module.

[0021] As a further scheme of the utility model: the boost control module comprises a ninth resistor, a tenth resistor, a first power supply, an eleventh resistor, a first comparator, a twelfth resistor, a thirteenth resistor, a third switch tube, a fourth switch tube, a first inverter, a first button switch and a third diode;

[0022] Preferably, one end of the ninth resistor is connected with the first end of the energy storage device, the other end of the ninth resistor is connected with the non-inverting terminal of the first comparator and the second end of the energy storage device through the tenth resistor, the inverting terminal of the first comparator is connected with one end of the twelfth resistor and the collector of the third switch tube and connected with the first power supply through the eleventh resistor, the emitter of the third switch tube is connected with the other end of the twelfth resistor, the emitter of the fourth switch tube and the ground terminal through the thirteenth resistor, the base of the third switch tube is connected with the collector of the fourth switch tube, the anode of the third diode and the static terminal of the first button switch, the dynamic terminal of the first button switch is connected with the output terminal of the first comparator, the cathode of the third diode is connected with the gate of the first power tube, the control terminal of the second thyristor and the second end of the sixth resistor, the base of the fourth switch tube is connected with the output terminal of the first inverter, and the input terminal of the first inverter is connected with the second end of the eighth resistor.

[0023] Compared with the prior art, the photovoltaic power generation voltage regulating circuit has the advantages that: the voltage regulating circuit of the photovoltaic power generation can provide voltage stabilizing and regulating treatment for the electric energy provided by the photovoltaic module through the voltage regulating module, supply power for the output module and the energy storage module, and when the voltage regulating module stops power supply, the energy storage module is controlled by the charge-discharge module to perform standby power supply, so that the power supply demand is met, the power supply efficiency is improved, when the output voltage needs to be increased, the electric energy voltage output by the output control module and the voltage regulating module is superimposed by the boost control module when the energy storage module is full, so as to provide the required electric energy for the output module, and the power supply voltage range of the voltage is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0025] Figure 1 A principle block diagram of a photovoltaic power generation voltage regulating circuit provided for the present application example.

[0026] Figure 2 A circuit diagram of a photovoltaic power generation voltage regulating circuit provided for the present application example.

[0027] Figure 3 A connection circuit diagram of a boost control module provided for the present application example. DETAILED DESCRIPTION

[0028] The technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the present application.

[0029] In one embodiment, please refer to Figure 1 A photovoltaic power generation voltage regulating circuit, comprising: a photovoltaic module 1, a voltage regulating module 2, an output control module 3, a charge-discharge module 4, an energy storage module 5, a boost control module 6 and an output module 7.

[0030] Specifically, the photovoltaic module 1 is used for photoelectric conversion and outputs first electric energy;

[0031] The voltage regulating module 2 is connected with the photovoltaic module 1, and is used for voltage stabilizing and regulating the first electric energy and outputting second electric energy.

[0032] The output control module 3 is connected with the voltage regulation module 2, the boost control module 6 and the charge-discharge module 4, and is used for filtering the second electric energy, and superimposing the second electric energy and the standby electric energy transmitted by the charge-discharge module 4 and outputting third electric energy when receiving the first control signal output by the boost control module 6.

[0033] The charge-discharge module 4 is connected with the voltage regulation module 2, the energy storage module 5 and the output module 7, and is used for transmitting the second electric energy to the energy storage module 5, and transmitting the standby electric energy provided by the energy storage module 5 to the output module 7 when not receiving the second electric energy, and transmitting the standby electric energy to the output control module 3 when receiving the first control signal.

[0034] The energy storage module 5 is used for storing the second electric energy transmitted by the charge-discharge module 4 and providing standby electric energy.

[0035] The boost control module 6 is connected with the voltage regulation module 2 and the charge-discharge module 4, and is used for detecting the voltage of the energy storage module 5 and outputting the first control signal when the detected voltage signal is higher than the set full power threshold and boost control is needed, and stopping outputting the first control signal when the voltage signal is lower than the set low voltage threshold or the second electric energy is not received.

[0036] The output module 7 is connected with the output control module 3 and the voltage regulation module 2, and is used for receiving the second electric energy, the third electric energy or the standby electric energy and supplying power to the connected electronic device.

[0037] In specific embodiments, the above-mentioned photovoltaic module 1 can adopt a photovoltaic circuit composed of a photovoltaic power generation panel and a capacitor to perform photoelectric conversion and filtering; the above-mentioned voltage regulation module 2 can adopt a voltage regulation circuit composed of a voltage stabilizer, a capacitor, an inductor and the like to perform voltage sampling and voltage stabilization adjustment on the photovoltaic power generation module; the above-mentioned output control module 3 can adopt an output control circuit composed of a capacitor, a resistor, a thyristor, a transistor and the like to perform output filtering and superimposition processing on the electric energy output by the voltage regulation module 2 and the charge-discharge module 4 when the boost control module 6 outputs the first control signal; the above-mentioned charge-discharge module 4 can adopt a charge-discharge circuit composed of a field effect transistor, a transistor and a resistor to control the energy storage module 5 to perform energy storage and discharge work; the above-mentioned energy storage module 5 can adopt an energy storage circuit composed of an energy storage device to perform energy storage and discharge work; the above-mentioned boost control module 6 can adopt a boost control circuit composed of a resistor, a comparator, a transistor and the like to perform full power detection on the energy storage module 5, control the superimposition work of the output control module 3 when the full power and boost control are needed, and stop working when the voltage regulation module 2 stops supplying power; and the above-mentioned output module 7 can adopt an output circuit composed of an output port to transmit the received electric energy to the connected electronic device.

[0038] In another embodiment, please refer to Figure 1 , Figure 2 and Figure 3 , the photovoltaic module 1 comprises a photovoltaic panel and a first capacitor C1; the voltage regulation module 2 comprises a first resistor R1, a second resistor R2, a third resistor R3, a first voltage regulator IC1, a fourth resistor R4, a second diode D2, a first inductor L1, a first diode D1, a second capacitor C2 and an eighth resistor R8;

[0039] Specifically, the first end of the photovoltaic panel is connected to one end of the fourth resistor R4, the sixth end of the first voltage regulator IC1 and one end of the first capacitor C1, and the third end of the first voltage regulator IC1 and one end of the second resistor R2 are connected through the first resistor R1, the other end of the second resistor R2 is connected to the seventh end of the first voltage regulator IC1 and the fourth end of the first voltage regulator IC1, the other end of the first capacitor C1, the anode of the first diode D1, one end of the second capacitor C2, the second end of the photovoltaic panel and the ground end are connected through the third resistor R3, the other end of the fourth resistor R4 is connected to the eighth end and the second end of the first voltage regulator IC1, the first end of the first voltage regulator IC1 is connected to the anode of the second diode D2, the first end of the eighth resistor R8 and the other end of the second capacitor C2, and the cathode of the first diode D1 and the fifth end of the first voltage regulator IC1 are connected through the first inductor L1, the second end of the eighth resistor R8 is connected to the charge-discharge module 4 and the boost control module 6, and the cathode of the second diode D2 is connected to the output control module 3.

[0040] In a specific embodiment, the above-mentioned first voltage regulator IC1 can be selected as MAX639 voltage regulator; the above-mentioned first resistor R1, second resistor R2 and third resistor R3 perform voltage division processing on the electrical energy output by the photovoltaic panel.

[0041] Further, the output control module 3 comprises a fifth resistor R5, a first switch tube V1, a sixth resistor R6, a first thyristor S1, a second thyristor S2, a fourth capacitor C4 and a third capacitor C3; the output module 7 comprises an output port;

[0042] Specifically, the control end of the first thyristor S1 is connected to the collector of the first switch tube V1 and connected to one end of the third capacitor C3, the cathode of the second diode D2 and the first end of the output port through the fifth resistor R5, the other end of the third capacitor C3 is connected to one end of the second thyristor S2 and one end of the first thyristor S1, the other end of the second thyristor S2 is connected to the first end of the fourth capacitor C4 and the charge-discharge module 4, the other end of the first thyristor S1 is connected to the emitter of the first switch tube V1, the second end of the output port and the anode of the first diode D1, the base of the first switch tube V1 is connected to the first end of the sixth resistor R6, and the second end of the sixth resistor R6 is connected to the control end of the second thyristor S2 and the boost control module 6.

[0043] In specific embodiments, the first switch tube V1 can be selected as an NPN type triode; the first thyristor S1 and the second thyristor S2 can be selected as bidirectional thyristors.

[0044] Further, the charge-discharge module 4 comprises a first power tube Q1; the energy storage module 5 comprises an energy storage device;

[0045] Specifically, the drain of the first power tube Q1 is connected to the first end of the energy storage device, the source of the first power tube Q1 is connected to the first end of the fourth capacitor C4, the gate of the first power tube Q1 is connected to the second end of the sixth resistor R6 and the boost control module 6, and the second end of the energy storage device is connected to the collector of the first switch tube V1.

[0046] In specific embodiments, the first power tube Q1 can be selected as an N-channel field effect tube for discharge control; the energy storage device can be selected as a lithium battery.

[0047] Further, the charge-discharge module 4 further comprises a second power tube Q2, a seventh resistor R7 and a second switch tube V2;

[0048] Specifically, the source of the second power tube Q2 is connected to the first end of the output port, the drain of the second power tube Q2 is connected to the first end of the energy storage device and the gate of the second power tube Q2 through the seventh resistor R7 and the collector of the second switch tube V2, the emitter of the second switch tube V2 is connected to the second end of the energy storage device, and the base of the second switch tube V2 is connected to the second end of the eighth resistor R8 and the boost control module 6.

[0049] In specific embodiments, the second power tube Q2 can be selected as an N-channel field effect tube for charge control and discharge control when the second power tube Q2 is turned on; the second switch tube V2 can be selected as an NPN type triode.

[0050] Further, the boost control module 6 comprises a ninth resistor R9, a tenth resistor R10, a first power supply VCC1, an eleventh resistor R11, a first comparator A1, a twelfth resistor R12, a thirteenth resistor R13, a third switch tube V3, a fourth switch tube V4, a first inverter INV1, a first key switch K1 and a third diode D3.

[0051] Specifically, one end of the ninth resistor R9 is connected to the first end of the energy storage device, the other end of the ninth resistor R9 is connected to the non-inverting terminal of the first comparator A1 and the second end of the energy storage device through the tenth resistor R10, the inverting terminal of the first comparator A1 is connected to one end of the twelfth resistor R12 and the collector of the third switch tube V3 and connected to the first power supply VCC1 through the eleventh resistor R11, the emitter of the third switch tube V3 is connected to the other end of the twelfth resistor R12, the emitter of the fourth switch tube V4 and the ground, the base of the third switch tube V3 is connected to the collector of the fourth switch tube V4, the anode of the third diode D3 and the static terminal of the first button switch K1, the dynamic terminal of the first button switch K1 is connected to the output terminal of the first comparator A1, the cathode of the third diode D3 is connected to the gate of the first power tube Q1, the control terminal of the second thyristor S2 and the second end of the sixth resistor R6, the base of the fourth switch tube V4 is connected to the output terminal of the first inverter INV1, and the input terminal of the first inverter INV1 is connected to the second end of the eighth resistor R8.

[0052] In specific embodiments, the ninth resistor R9 and the tenth resistor R10 are used for voltage sampling; the first power supply VCC1, the eleventh resistor R11 and the twelfth resistor R12 are used for setting the full power threshold, and the third switch tube V3 and the thirteenth resistor R13 are used for setting the low voltage threshold, wherein the third switch tube V3 can be an NPN type transistor; the first inverter INV1 can be a NOT gate chip; and the fourth switch tube V4 can be an NPN type transistor.

[0053] The voltage regulating circuit of the photovoltaic power generation in this embodiment, by photovoltaic power supply board for photoelectric conversion, the first capacitor C1 filtering and output first electric energy, the first electric energy due to the first resistor R1, the second resistor R2 and the third resistor R3 voltage division, voltage division after the electric energy meets the input voltage of the first voltage regulator IC1, the first voltage regulator IC1 cooperate with the fourth resistor R4, the first diode D1, the first inductor L1 and the second capacitor C2 voltage regulation processing, output second electric energy, the second electric energy is transmitted to the output port through the second diode D2, and transmitted to the energy storage device through the second power tube Q2, the voltage regulating module provides the voltage regulation processing for the electric energy provided by the photovoltaic module, and supplies power for the output module and the energy storage module. After the second electric energy disappears, the second switch V2 is cut off, so that the second power tube Q2 is turned on, and the standby electric energy provided by the energy storage device is transmitted to the output port through the second power tube Q2, so as to ensure uninterrupted power supply. When the voltage regulating module stops supplying power, the energy storage module is controlled by the charging and discharging module to provide standby power, which meets the power supply demand and improves the power supply efficiency. The ninth resistor R9 and the tenth resistor R10 are used for voltage sampling of the energy storage device. When the sampled signal is greater than the first power supply VCC1, the eleventh resistor R11 and the twelfth resistor R12 are set, the full power threshold is reached, the first comparator A1 outputs high level. When the voltage needs to be boosted, press the first key switch K1. The first comparator A1 controls the second thyristor S2, the first power tube Q1, the third switch V3 and the first switch V1 to be turned on. The first thyristor S1 is cut off, so that the third capacitor C3 and the fourth capacitor C4 are connected in series. The standby electric energy provided by the energy storage device and the second capacitor C2 transmitted by the second diode D2 are superimposed and outputted through the third capacitor C3. At the same time, the third switch V3 and the thirteenth resistor R13 cooperate with the first power supply VCC1, the eleventh resistor R11 and the twelfth resistor R12 to set the low voltage threshold. When the energy of the energy storage device is not lower than the low voltage threshold, the first comparator A1 outputs high level. When the first voltage regulator IC1 stops providing second electric energy, the first inverter INV1 controls the fourth switch V4 to be turned on, so that the first comparator A1 stops triggering the first power tube Q1, the first switch V1, the third switch V3 and the second thyristor S2 to be turned on, and the standby power is provided by the energy storage device again. When the output voltage needs to be increased, the voltage regulating module and the output control module output the voltage superposition processing of the electric energy, so as to provide the required electric energy for the output module and improve the voltage range of the power supply voltage.

[0054] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, the scope of the present application being defined by the claims appended hereto rather than by the above description, and all the changes which fall within the meaning and the scope of the equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

[0055] Furthermore, it should be understood that although the present specification describes exemplary embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that a person skilled in the art can understand.

Claims

1. A voltage regulation circuit for photovoltaic power generation, characterized in that, The voltage regulation circuit for this photovoltaic power generation includes: a photovoltaic module, a voltage regulation module, an output control module, a charging and discharging module, an energy storage module, a boost control module, and an output module; The photovoltaic module is used for photoelectric conversion and outputting the first electrical energy; The voltage regulation module is connected to the photovoltaic module and is used to regulate the voltage of the first electrical energy and output the second electrical energy. The output control module is connected to the voltage regulation module, the boost control module and the charge and discharge module. It is used to filter the second electrical energy. When it receives the first control signal output by the boost control module, it superimposes the second electrical energy with the backup electrical energy transmitted by the charge and discharge module and outputs the third electrical energy. The charging and discharging module is connected to the voltage regulation module, the energy storage module and the output module. It is used to transmit the second electrical energy to the energy storage module, and when the second electrical energy is not received, to transmit the backup electrical energy provided by the energy storage module to the output module. When the first control signal is received, the backup electrical energy is transmitted to the output control module. The energy storage module is used to store the second electrical energy transmitted by the charging and discharging module and to provide backup electrical energy; The boost control module is connected to the voltage regulation module and the charging and discharging module. It is used to detect the voltage of the energy storage module and output a first control signal when the detected voltage signal is higher than the set full charge threshold and boost control is required. When the voltage signal is lower than the set low voltage threshold or no second energy is received, the output of the first control signal is stopped. The output module is connected to the output control module and the voltage regulation module, and is used to receive second electrical energy, third electrical energy or backup electrical energy and to power connected electronic devices.

2. The voltage regulation circuit for photovoltaic power generation according to claim 1, characterized in that, The photovoltaic module includes a photovoltaic panel and a first capacitor; the voltage regulation module includes a first resistor, a second resistor, a third resistor, a first voltage regulator, a fourth resistor, a second diode, a first inductor, a second capacitor, and an eighth resistor. The first end of the photovoltaic panel is connected to one end of the fourth resistor, the sixth end of the first voltage regulator, and one end of the first capacitor. It is also connected to the third end of the first voltage regulator and one end of the second resistor through the first resistor. The other end of the second resistor is connected to the seventh end of the first voltage regulator. It is also connected to the fourth end of the first voltage regulator, the other end of the first capacitor, the anode of the first diode, one end of the second capacitor, the second end of the photovoltaic panel, and the ground through the third resistor. The other end of the fourth resistor is connected to the eighth and second ends of the first voltage regulator. The first end of the first voltage regulator is connected to the anode of the second diode, the first end of the eighth resistor, and the other end of the second capacitor. It is also connected to the cathode of the first diode and the fifth end of the first voltage regulator through the first inductor. The second end of the eighth resistor is connected to the charging / discharging module and the boost control module. The cathode of the second diode is connected to the output control module.

3. The voltage regulation circuit for photovoltaic power generation according to claim 2, characterized in that, The output control module includes a fifth resistor, a first switching transistor, a sixth resistor, a first thyristor, a second thyristor, a fourth capacitor, and a third capacitor; the output module includes an output port; The control terminal of the first thyristor is connected to the collector of the first switching transistor and is connected to one end of the third capacitor, the cathode of the second diode, and the first end of the output port through the fifth resistor. The other end of the third capacitor is connected to one end of the second thyristor and one end of the first thyristor. The other end of the second thyristor is connected to the first end of the fourth capacitor and the charging / discharging module. The other end of the first thyristor is connected to the emitter of the first switching transistor, the second end of the output port, and the anode of the first diode. The base of the first switching transistor is connected to the first end of the sixth resistor. The second end of the sixth resistor is connected to the control terminal of the second thyristor and the boost control module.

4. The voltage regulation circuit for photovoltaic power generation according to claim 3, characterized in that, The charging and discharging module includes a first power transistor; the energy storage module includes an energy storage device. The drain of the first power transistor is connected to the first terminal of the energy storage device, the source of the first power transistor is connected to the first terminal of the fourth capacitor, the gate of the first power transistor is connected to the second terminal of the sixth resistor and the boost control module, and the second terminal of the energy storage device is connected to the collector of the first switching transistor.

5. The voltage regulation circuit for photovoltaic power generation according to claim 4, characterized in that, The charging and discharging module also includes a second power transistor, a seventh resistor, and a second switching transistor; The source of the second power transistor is connected to the first end of the output port, the drain of the second power transistor is connected to the first end of the energy storage device and is connected to the gate of the second power transistor and the collector of the second switching transistor through the seventh resistor, the emitter of the second switching transistor is connected to the second end of the energy storage device, and the base of the second switching transistor is connected to the second end of the eighth resistor and the boost control module.

6. The voltage regulation circuit for photovoltaic power generation according to claim 5, characterized in that, The boost control module includes a ninth resistor, a tenth resistor, a first power supply, an eleventh resistor, a first comparator, a twelfth resistor, a thirteenth resistor, a third switch, a fourth switch, a first inverter, a first push-button switch, and a third diode. One end of the ninth resistor is connected to the first terminal of the energy storage device, and the other end of the ninth resistor is connected to the non-inverting terminal of the first comparator and connected to the second terminal of the energy storage device through the tenth resistor. The inverting terminal of the first comparator is connected to one end of the twelfth resistor and the collector of the third switch and connected to the first power supply through the eleventh resistor. The emitter of the third switch is connected to the other end of the twelfth resistor, the emitter of the fourth switch, and the ground terminal through the thirteenth resistor. The base of the third switch is connected to the collector of the fourth switch, the anode of the third diode, and the stationary terminal of the first push-button switch. The moving terminal of the first push-button switch is connected to the output terminal of the first comparator. The cathode of the third power transistor is connected to the gate of the first power transistor, the control terminal of the second thyristor, and the second terminal of the sixth resistor. The base of the fourth switch is connected to the output terminal of the first inverter. The input terminal of the first inverter is connected to the second terminal of the eighth resistor.

Images