CN218976591U

CN218976591U - Solar power generation device

Info

Publication number: CN218976591U
Application number: CN202320156607.3U
Authority: CN
Inventors: 邱俊涛; 李大鹏
Original assignee: Changya Technology Shenzhen Co ltd
Current assignee: Changya Technology Shenzhen Co ltd
Priority date: 2023-02-08
Filing date: 2023-02-08
Publication date: 2023-05-05
Anticipated expiration: 2033-02-08

Abstract

The application discloses a solar power generation device, which comprises a solar panel and a control box, wherein the control box is arranged on the solar panel; the control box comprises an MPPT controller and a power supply controller, wherein the MPPT controller comprises an input detection circuit, an output detection circuit, a DC-DC conversion circuit and a PWM control circuit, the power supply controller comprises a filtering voltage stabilizing circuit and an output interface circuit, the input end of the DC-DC conversion circuit is connected with the solar panel, the output end of the DC-DC conversion circuit is connected with the input end of the filtering voltage stabilizing circuit, and the output end of the filtering voltage stabilizing circuit is connected with the output interface circuit; the input detection circuit is connected between the solar panel and the input end of the DC-DC conversion circuit, the output detection circuit is connected between the output end of the DC-DC conversion circuit and the input end of the filtering voltage stabilizing circuit, and the PWM control circuit is respectively connected with the input detection circuit, the output detection circuit and the DC-DC conversion circuit, so that the solar power generation device can independently supply power to external equipment.

Description

Solar power generation device

Technical Field

The application relates to the technical field of solar power generation, in particular to a solar power generation device.

Background

At present, a solar panel needs to be matched with an energy storage power supply for use, and current generated by the solar panel needs to be transmitted to the energy storage power supply for processing and storage and then is output to external electric equipment by the energy storage power supply. The use mode has the advantages that on one hand, the solar panel can not independently supply power to external electric equipment, on the other hand, the energy storage power supply and the solar panel are large in size and heavy in weight when combined, and the solar panel is inconvenient to carry out.

Disclosure of Invention

The purpose of this application is to solve the not enough of prior art, provides a solar power system that can independently supply power to external equipment.

The technical scheme of the application is as follows:

the solar power generation device comprises a solar panel and a control box, wherein the control box is arranged on the solar panel; the control box comprises an MPPT controller and a power supply controller, wherein the MPPT controller comprises an input detection circuit, an output detection circuit, a DC-DC conversion circuit and a PWM control circuit, the power supply controller comprises a filtering voltage stabilizing circuit and an output interface circuit, the input end of the DC-DC conversion circuit is connected with the solar panel, the output end of the DC-DC conversion circuit is connected with the input end of the filtering voltage stabilizing circuit, and the output end of the filtering voltage stabilizing circuit is connected with the output interface circuit; the input detection circuit is connected between the solar panel and the input end of the DC-DC conversion circuit, the output detection circuit is connected between the output end of the DC-DC conversion circuit and the input end of the filtering voltage stabilizing circuit, and the PWM control circuit is respectively connected with the input detection circuit, the output detection circuit and the DC-DC conversion circuit.

Optionally, the PWM control circuit includes an MCU and a driving circuit, an output end of the driving circuit is connected to the DC-DC conversion circuit, an input end of the driving circuit is connected to the MCU, and both the input detection circuit and the output detection circuit are connected to the MCU.

Optionally, the output interface circuit comprises a PD protocol circuit and a TYPE-C interface, and the PD protocol circuit is respectively connected with the output end of the filtering voltage stabilizing circuit and the TYPE-C interface;

or the output interface circuit comprises a QC protocol circuit and a QC interface, and the QC protocol circuit is respectively connected with the output end of the filtering voltage stabilizing circuit and the QC interface;

or the output interface circuit comprises a USB output circuit and a USB interface, and the USB output circuit is respectively connected with the output end of the filtering voltage stabilizing circuit and the USB interface;

or the output interface circuit comprises a DC output circuit and a DC interface, and the DC output circuit is respectively connected with the output end of the filtering voltage stabilizing circuit and the DC interface.

When the output interface circuit comprises a PD protocol circuit and a TYPE-C interface, the PD protocol circuit comprises a PD protocol chip, a synchronous voltage-regulating power supply chip and a power switch tube, the PD protocol chip is respectively connected with the synchronous voltage-regulating power supply chip, the power switch tube and the TYPE-C interface, the synchronous voltage-regulating power supply chip is respectively connected with the output end of the filtering voltage-stabilizing circuit and the power switch tube, and the power switch tube is connected with the TYPE-C interface.

Optionally, the PD protocol chip is a PD3.1 protocol chip.

Optionally, the DC-DC conversion circuit includes: the MOS transistor comprises a MOS transistor Q1, a MOS transistor Q2, a diode D1, a resistor R3, a capacitor C3, a diode D2, a resistor R4 and a capacitor C4, wherein a first end of the resistor R3, an anode of the diode D1 and a drain of the MOS transistor Q1 are commonly connected to an anode output end of the solar panel, a second end of the resistor R3 and a cathode of the diode D1 are commonly connected to a first end of the capacitor C3, an anode of the diode D2, a first end of the resistor R4, a source of the MOS transistor Q1 and a drain of the MOS transistor Q2 are commonly connected to a second end of the capacitor C3, a cathode of the diode D2 and a second end of the resistor R4 are commonly connected to a first end of the capacitor C4, a cathode output end of the solar panel, a second end of the capacitor C4 and a source of the MOS transistor Q2 are commonly connected to the ground, and the control circuit is respectively connected with a grid of the MOS transistor Q1 and a grid of the MOS transistor Q2.

Optionally, the DC-DC conversion circuit further includes a backflow prevention circuit, the backflow prevention circuit includes a MOS transistor Q3 and a resistor R7, a first end of the resistor R7 is connected between the PWM control circuit and the gate of the MOS transistor Q1, a second end of the resistor R7 is connected to the gate of the MOS transistor Q3, a source of the MOS transistor Q3 is connected to the second end of the capacitor C3, and a drain of the MOS transistor Q3 is connected to the filtering voltage stabilizing circuit.

Optionally, the input detection circuit includes a resistor R1, a resistor R2, and a capacitor C1, where a first end of the resistor R1 is connected between the positive output end of the solar panel and the positive electrode of the diode D1, and a second end of the resistor R1 is connected to the first end of the resistor R2, the first end of the capacitor C1, and the PWM control circuit, and a second end of the resistor R2 and a second end of the capacitor C1 are grounded.

Optionally, the output detection circuit includes: the MOS transistor comprises a resistor R5, a resistor R6 and a capacitor C5, wherein a first end of the resistor R5 is respectively connected with a first end of the resistor R6, a first end of the capacitor C5 and the PWM control circuit, a second end of the resistor R5 is connected with a grid electrode of the MOS transistor Q3, and a second end of the resistor R6 and a second end of the capacitor C5 are grounded.

Optionally, the filtering voltage stabilizing circuit includes a first filtering circuit, a voltage stabilizing chip U1 and a second filtering circuit, the first filtering circuit includes an electrolytic capacitor C6 and a monolithic capacitor C7, the second filtering circuit includes an electrolytic capacitor C8 and a monolithic capacitor C9, an input end of the voltage stabilizing chip U1, an anode of the electrolytic capacitor C6 and a first end of the monolithic capacitor C7 are commonly connected to an output end of the positive electrode of the DC-DC conversion circuit, a ground end of the voltage stabilizing chip U1, a cathode of the electrolytic capacitor C6 and a second end of the monolithic capacitor C7 are grounded, an output end of the voltage stabilizing chip U1, an anode of the electrolytic capacitor C8 and a first end of the monolithic capacitor C9 are commonly connected to an input end of the output interface circuit, and a cathode of the electrolytic capacitor C8 and a second end of the monolithic capacitor C9 are grounded.

The application has at least the following beneficial effects:

the control box of the solar power generation device is arranged on the solar panel, the control box comprises an MPPT controller and a power supply controller, the MPPT controller comprises a DC-DC conversion circuit, the power supply controller comprises a filtering voltage stabilizing circuit and an output interface circuit, and power generated by the solar panel is converted by the DC-DC conversion circuit and is transmitted to the output interface circuit after being filtered and stabilized by the filtering voltage stabilizing circuit, so that the solar power generation device can independently supply power to external equipment through the output interface circuit without energy storage equipment. Therefore, the outdoor activities only need to carry the solar power generation device, and the outdoor activities are convenient to carry. The MPPT controller comprises an input detection circuit, an output detection circuit and a PWM control circuit, so that the solar power generation device can dynamically adjust the output of the DC-DC conversion circuit through the PWM control circuit according to signals provided by the input detection circuit and the output detection circuit, and the power supply controller can supply power to the outside with maximum power.

The foregoing description is only an overview of the technical solutions of the present application, and may be implemented according to the content of the specification, so that the foregoing and other objects, features and advantages of the present application can be more clearly understood, and the following detailed description of the preferred embodiments will be given with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic structural diagram of a solar power generation device according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a solar power generation device according to an embodiment of the present application;

FIG. 3 is a block diagram of a solar power generation device in an embodiment of the present application;

fig. 4 is a schematic diagram of the structure of the input detection circuit, the output detection circuit, the DC-DC conversion circuit, and the PWM control circuit when connected in the embodiment of the present application;

FIG. 5 is a schematic diagram of a configuration of a filter voltage regulator circuit and an output interface circuit according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a PD cooperative solar power generation apparatus according to an embodiment of the present application when the circuit is connected to a filtering voltage stabilizing circuit;

FIG. 7 is a schematic circuit diagram of a solar power generation device in an embodiment of the present application;

fig. 8 is a schematic circuit diagram of a filtering voltage stabilizing circuit in an embodiment of the present application.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved by the present application more clear, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and simplify description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

As shown in fig. 1 to 3, the embodiment of the present application provides a solar power generation device, which includes a solar panel 10 and a control box 20, wherein the control box 20 is disposed on the solar panel 10. The solar panel 10, also called a solar cell module, is an assembly formed by assembling a plurality of solar cells in a certain manner. The solar panel 10 is capable of converting solar radiation energy into electrical energy using the photovoltaic effect. The control box 20 may be installed at the rear surface of the solar panel 10 such that it is integrally connected with the solar panel 10 without blocking the photoelectric conversion efficiency of the solar panel 10. Control box 20 includes an MPPT (MaximumPowerPoint Tracking ) controller 21 and a power supply controller 22, and MPPT controller 21 and power supply controller 22 may be provided in the box to protect MPPT controller 21 and power supply controller 22. The MPPT controller 21 includes an input detection circuit 211, an output detection circuit 212, a DC (direct current) -DC conversion circuit 213, and a PWM (pulse width modulation) control circuit 214, the power supply controller 22 includes a filter voltage stabilizing circuit 221 and an output interface circuit 222, an input end of the DC-DC conversion circuit 213 is connected to the solar panel 10, an output end of the DC-DC conversion circuit 213 is connected to an input end of the filter voltage stabilizing circuit 221, and an output end of the filter voltage stabilizing circuit 221 is connected to the output interface circuit 222; the input detection circuit 211 is connected between the solar panel 10 and the input terminal of the DC-DC conversion circuit 213, the output detection circuit 212 is connected between the output terminal of the DC-DC conversion circuit 213 and the input terminal of the filter voltage stabilizing circuit 221, and the PWM control circuit 214 is connected to the input detection circuit 211, the output detection circuit 212, and the DC-DC conversion circuit 213, respectively.

In summary, the control box 20 of the solar power generation device is disposed on the solar panel 10, the control box 20 includes the MPPT controller 21 and the power supply controller 22, the MPPT controller 21 includes the DC-DC conversion circuit 213, the power supply controller 22 includes the filtering voltage stabilizing circuit 221 and the output interface circuit 222, and the power generated by the solar panel 10 is converted by the DC-DC conversion circuit 213 and is filtered and stabilized by the filtering voltage stabilizing circuit 221 and then is transmitted to the output interface circuit 222, so that the solar power generation device can independently supply power to the external device through the output interface circuit 222 without energy storage equipment. Therefore, the outdoor activities only need to carry the solar power generation device, and the outdoor activities are convenient to carry. The MPPT controller 21 includes an input detection circuit 211, an output detection circuit 212, and a PWM control circuit 214, so that the solar power generation device can dynamically adjust the output of the DC-DC conversion circuit 213 through the PWM control circuit 214 according to signals provided by the input detection circuit 211 and the output detection circuit 212, to achieve external power supply at maximum power through the power supply controller 22.

In some embodiments of the present application, as shown in fig. 4, the PWM control circuit 214 includes an MCU (micro controller unit) 215 and a driving circuit 216, an output terminal of the driving circuit 216 is connected to the DC-DC conversion circuit 213, an input terminal of the driving circuit 216 is connected to the MCU215, and the input detection circuit 211 and the output detection circuit 212 are connected to the MCU 215. The MCU215 samples the current and voltage output from the solar panel 10 through the input detection circuit 211, samples the current and voltage converted by the DC-DC conversion circuit 213 through the output detection circuit 212, thereby tracking the maximum output power point of the solar panel 10 in real time, and outputs a PWM driving signal to the DC-DC conversion circuit 213 by controlling the PWM control circuit 214, thereby adjusting the DC-DC conversion circuit 213.

In some embodiments of the present application, the MCU215 is a single chip microcomputer of the PSoC family, such as CY8CLED03D02. The drive circuit 216 includes a drive, which may be a high speed synchronous drive, such as TPS28225. The voltage signals collected by the input detection circuit 211 and the output detection circuit 212 are respectively transmitted to the MCU215 for a/D conversion, so as to obtain current voltage signals before and after conversion by the DC-DC conversion circuit 213.

In some embodiments of the present application, as shown in fig. 5, output interface circuit 222 includes one or more of PD protocol circuit 311 and TYPE-C interface 312, QC protocol circuit 313 and QC interface 314, USB output circuit 315 and USB interface 316, DC output circuit 317 and DC interface 314. When the output interface circuit 222 includes the PD protocol circuit 311 and the TYPE-C interface 312, the PD protocol circuit 311 is connected to the output terminal of the filter voltage regulator circuit 221 and the TYPE-C interface 312, respectively. When the output interface circuit 222 includes the QC protocol circuit 313 and the QC interface 314, the QC protocol circuit 313 is connected to the output of the filter voltage stabilizing circuit 221 and the QC interface 314, respectively. When the output interface circuit 222 includes the USB output circuit 315 and the USB interface 316, the USB output circuit 315 is connected to the output terminal of the filter voltage stabilizing circuit 221 and the USB interface 316, respectively. When the output interface circuit 222 includes the DC output circuit 317 and the DC interface 314, the DC output circuit 317 is connected to the output terminal of the filter voltage stabilizing circuit 221 and the DC interface 314, respectively. In one embodiment of the present application, the output interface circuit 222 includes a PD protocol circuit 311 and a TYPE-C interface 312, a QC protocol circuit 313 and a QC interface 314, a USB output circuit 315 and a USB interface 316, a DC output circuit 317 and a DC interface 314, and the PD protocol circuit 311, the QC protocol circuit 313, the USB output circuit 315, and the DC output circuit 317 are respectively connected to the filtering voltage stabilizing circuit 221.

In some embodiments of the present application, as shown in fig. 6, when the output interface circuit 222 includes the PD protocol circuit 311 and the TYPE-C interface 312, the PD protocol circuit 311 includes the PD protocol chip 319, the synchronous voltage regulator chip 320, and the power switch 321, and the PD protocol chip 319 is connected to the synchronous voltage regulator chip 320, the power switch 321, and the TYPE-C interface 312, and the synchronous voltage regulator chip 320 is connected to the output terminal of the filter voltage regulator circuit 221 and the power switch 321, and the power switch 321 is connected to the TYPE-C interface 312. The PD protocol chip 319 receives the power consumption voltage fed back by the TYPE-C interface 312, and the PD protocol chip 319 adjusts the output voltage of the synchronous voltage-regulating power supply chip 320 according to the fed back power consumption voltage and outputs the output voltage to the TYPE-C interface 312 through the power switch 321.

Further, PD protocol chip 319 is a PD3.1 protocol chip, such as a PD3.1 protocol chip employing a WT6676F chip. The charging current supported by the PD3.1 protocol is kept unchanged by 5A, the charging voltage is up to 48V, and the highest power is up to 240W, so that the solar power generation device can supply power to high-power equipment with the highest power of 240W.

In some embodiments of the present application, as shown in fig. 7, the DC-DC conversion circuit 213 includes: the MOS tube Q1, the MOS tube Q2, the diode D1, the resistor R3, the capacitor C3, the diode D2, the resistor R4 and the capacitor C4, wherein the first end of the resistor R3, the anode of the diode D1 and the drain electrode of the MOS tube Q1 are commonly connected to the positive output end of the solar panel 10, the second end of the resistor R3 and the cathode of the diode D1 are commonly connected to the first end of the capacitor C3, the anode of the diode D2, the first end of the resistor R4, the source electrode of the MOS tube Q1 and the drain electrode of the MOS tube Q2 are commonly connected to the second end of the capacitor C3, the cathode of the diode D2 and the second end of the resistor R4 are commonly connected to the first end of the capacitor C4, the negative output end of the solar panel 10, the second end of the capacitor C4 and the source electrode of the MOS tube Q2 are grounded, and the PWM control circuit 214 is respectively connected with the gate electrode of the MOS tube Q1 and the gate electrode of the MOS tube Q2. The DC-DC conversion circuit 213 adopts a MOSFET half-bridge structure, and the diode D1, the resistor R3, and the capacitor C3 form an absorption circuit of the upper bridge arm power MOSFET q1, and the diode D2, the resistor R4, and the capacitor C4 form an absorption circuit of the lower bridge arm power MOSFET q 2. The driver of the driving circuit 216 receives the PWM control signal from the MCU215, and generates complementary high-side and low-side driving signals applied to the gates of the upper arm and the lower arm of the MOSFET half-bridge, respectively. For example, pin 3 of driver TPS28225 is connected to the MCU and is grounded through a pull-down resistor to receive the PWM control signal from the MCU. Pin 2 is connected to pin 8 through a capacitor, and pin 8 is connected to the source of power MOSFETQ 1. Pin 1 is connected to the gate of power MOSFET Q1 and generates the drive signal for power MOSFET Q1. Pin 5 is connected to the gate of power MOSFETQ2 and generates the drive signal for power MOSFETQ 2.

Further, the DC-DC conversion circuit 213 further includes a backflow prevention circuit, the backflow prevention circuit includes a MOS transistor Q3 and a resistor R7, a first end of the resistor R7 is connected between the PWM control circuit 214 and a gate of the MOS transistor Q1, a second end of the resistor R7 is connected to the gate of the MOS transistor Q3, a source of the MOS transistor Q3 is connected to a second end of the capacitor C3, and a drain of the MOS transistor Q3 is connected to the filtering voltage stabilizing circuit 221. The backflow prevention circuit adopts a MOSFET circuit connected in a synchronous rectification mode, and when the PWM signal is turned on, the grid electrode drive of the backflow prevention circuit adopts positive voltage drive, so that the forward conduction voltage drop of a parasitic body diode in the MOSFET is effectively reduced, the voltage drop loss of a charging loop is reduced, the difficulty of heat dissipation management is reduced, and the overall efficiency is effectively improved.

In some embodiments of the present application, as shown in fig. 7, the input detection circuit 211 includes a resistor R1, a resistor R2, and a capacitor C1, where a first end of the resistor R1 is connected between the positive output end of the solar panel 10 and the positive electrode of the diode D1, a second end of the resistor R1 is connected to a first end of the resistor R2, a first end of the capacitor C1, and the PWM control circuit 214, and a second end of the resistor R2 and a second end of the capacitor C1 are grounded. The divided voltage signal of the output current of the solar panel 10 is sent to the MCU215 for a/D conversion, thereby obtaining the output voltage of the solar panel 10. The input detection circuit 211 further includes a precision sampling resistor R8, and the output current of the solar panel 10 forms a voltage difference signal at two ends of the precision sampling resistor R8, the voltage difference signal is differentially amplified by an internal differential operational amplifier of the MCU215, and then is subjected to analog/digital conversion by an a/D conversion unit of the MCU215, thereby obtaining the output current of the solar panel 10.

Similarly, in some embodiments of the present application, the output detection circuit 212 includes: the first end of the resistor R5, the resistor R6 and the capacitor C5 are respectively connected with the first end of the resistor R6, the first end of the capacitor C5 and the PWM control circuit 214, the second end of the resistor R5 is connected with the grid electrode of the MOS tube Q3, and the second end of the resistor R6 and the second end of the capacitor C5 are grounded to obtain the voltage converted by the DC-DC conversion circuit 213. The output detection circuit 212 further includes a precision sampling resistor R9, and the MCU215 obtains the current converted by the DC-DC conversion circuit 213 according to the voltage difference between the two ends of the precision sampling resistor R9.

In some embodiments of the present application, as shown in fig. 8, the filtering voltage stabilizing circuit 221 includes a first filtering circuit, a voltage stabilizing chip U1 and a second filtering circuit, where the first filtering circuit includes an electrolytic capacitor C6 and a monolithic capacitor C7, the second filtering circuit includes an electrolytic capacitor C8 and a monolithic capacitor C9, an input end of the voltage stabilizing chip U1, an anode of the electrolytic capacitor C6 and a first end of the monolithic capacitor C7 are commonly connected to an anode output end of the DC-DC conversion circuit 213, a ground end of the voltage stabilizing chip U1, a cathode of the electrolytic capacitor C6 and a second end of the monolithic capacitor C7 are grounded, an output end of the voltage stabilizing chip U1, an anode of the electrolytic capacitor C8 and a first end of the monolithic capacitor C9 are commonly connected to an input end of the output interface circuit 222, and a cathode of the electrolytic capacitor C8 and a second end of the monolithic capacitor C9 are grounded, so as to implement filtering voltage stabilizing of the current converted by the DC-DC conversion circuit 213.

The foregoing is a specific embodiment of the present application, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present application, and these improvements and modifications are also considered as the protection scope of the present application.

Claims

1. The solar power generation device is characterized by comprising a solar panel and a control box, wherein the control box is arranged on the solar panel; the control box comprises an MPPT controller and a power supply controller, wherein the MPPT controller comprises an input detection circuit, an output detection circuit, a DC-DC conversion circuit and a PWM control circuit, the power supply controller comprises a filtering voltage stabilizing circuit and an output interface circuit, the input end of the DC-DC conversion circuit is connected with the solar panel, the output end of the DC-DC conversion circuit is connected with the input end of the filtering voltage stabilizing circuit, and the output end of the filtering voltage stabilizing circuit is connected with the output interface circuit; the input detection circuit is connected between the solar panel and the input end of the DC-DC conversion circuit, the output detection circuit is connected between the output end of the DC-DC conversion circuit and the input end of the filtering voltage stabilizing circuit, and the PWM control circuit is respectively connected with the input detection circuit, the output detection circuit and the DC-DC conversion circuit.

2. The solar power generation device according to claim 1, wherein the PWM control circuit includes an MCU and a driving circuit, an output terminal of the driving circuit is connected to the DC-DC conversion circuit, an input terminal of the driving circuit is connected to the MCU, and both the input detection circuit and the output detection circuit are connected to the MCU.

3. The solar power generation device according to claim 1, wherein the output interface circuit comprises a PD protocol circuit and a TYPE-C interface, and the PD protocol circuit is connected to the output end of the filtering voltage stabilizing circuit and the TYPE-C interface, respectively;

4. The solar power generation device according to claim 3, wherein when the output interface circuit comprises a PD protocol circuit and a TYPE-C interface, the PD protocol circuit comprises a PD protocol chip, a synchronous voltage-regulating power supply chip, and a power switch tube, the PD protocol chip is respectively connected with the synchronous voltage-regulating power supply chip, the power switch tube, and the TYPE-C interface, the synchronous voltage-regulating power supply chip is respectively connected with an output end of the filtering voltage-stabilizing circuit and the power switch tube, and the power switch tube is connected with the TYPE-C interface.

5. The solar power generation device of claim 4, wherein the PD protocol chip is a PD3.1 protocol chip.

6. The solar power generation device according to claim 1, wherein the DC-DC conversion circuit includes: the MOS transistor comprises a MOS transistor Q1, a MOS transistor Q2, a diode D1, a resistor R3, a capacitor C3, a diode D2, a resistor R4 and a capacitor C4, wherein a first end of the resistor R3, an anode of the diode D1 and a drain of the MOS transistor Q1 are commonly connected to an anode output end of the solar panel, a second end of the resistor R3 and a cathode of the diode D1 are commonly connected to a first end of the capacitor C3, an anode of the diode D2, a first end of the resistor R4, a source of the MOS transistor Q1 and a drain of the MOS transistor Q2 are commonly connected to a second end of the capacitor C3, a cathode of the diode D2 and a second end of the resistor R4 are commonly connected to a first end of the capacitor C4, a cathode output end of the solar panel, a second end of the capacitor C4 and a source of the MOS transistor Q2 are commonly connected to the ground, and the control circuit is respectively connected with a grid of the MOS transistor Q1 and a grid of the MOS transistor Q2.

7. The solar power generation device according to claim 6, wherein the DC-DC conversion circuit further comprises a backflow prevention circuit, the backflow prevention circuit comprises a MOS transistor Q3 and a resistor R7, a first end of the resistor R7 is connected between the PWM control circuit and the gate of the MOS transistor Q1, a second end of the resistor R7 is connected with the gate of the MOS transistor Q3, a source of the MOS transistor Q3 is connected with the second end of the capacitor C3, and a drain of the MOS transistor Q3 is connected with the filtering voltage stabilizing circuit.

8. The solar power generation device according to claim 7, wherein the input detection circuit comprises a resistor R1, a resistor R2 and a capacitor C1, a first end of the resistor R1 is connected between the positive output end of the solar panel and the positive electrode of the diode D1, a second end of the resistor R1 is connected to the first end of the resistor R2, the first end of the capacitor C1 and the PWM control circuit, respectively, and a second end of the resistor R2 and a second end of the capacitor C1 are grounded.

9. The solar power generation apparatus of claim 7, wherein the output detection circuit comprises: the MOS transistor comprises a resistor R5, a resistor R6 and a capacitor C5, wherein a first end of the resistor R5 is respectively connected with a first end of the resistor R6, a first end of the capacitor C5 and the PWM control circuit, a second end of the resistor R5 is connected with a grid electrode of the MOS transistor Q3, and a second end of the resistor R6 and a second end of the capacitor C5 are grounded.

10. The solar power generation device according to claim 1, wherein the filtering voltage stabilizing circuit comprises a first filtering circuit, a voltage stabilizing chip U1 and a second filtering circuit, the first filtering circuit comprises an electrolytic capacitor C6 and a monolithic capacitor C7, the second filtering circuit comprises an electrolytic capacitor C8 and a monolithic capacitor C9, the input end of the voltage stabilizing chip U1, the positive electrode of the electrolytic capacitor C6 and the first end of the monolithic capacitor C7 are commonly connected to the positive output end of the DC-DC conversion circuit, the ground end of the voltage stabilizing chip U1, the negative electrode of the electrolytic capacitor C6 and the second ground of the monolithic capacitor C7 are commonly connected to the input end of the output interface circuit, and the negative electrode of the electrolytic capacitor C8 and the second ground of the monolithic capacitor C9 are commonly connected to the input end of the output interface circuit.