CN102983617B - Solar photovoltaic power generation system with adaptive power control and method of operation thereof - Google Patents

Abstract

A solar photovoltaic power generation system with adaptive power control supplies power to a load by generating electric energy through a solar photovoltaic cell panel. The solar photovoltaic power generation system comprises a charging control unit, a rechargeable battery unit, a first switch unit, a second switch unit, a power supply regulation and control unit and a switch control unit. When the solar photovoltaic cell panel can provide electric energy output, the switch control unit switches on the first switch unit and switches off the second switch unit, so that the electric energy output by the solar photovoltaic cell panel supplies power to the load; simultaneously, the rechargeable battery cell is charged. When the solar photovoltaic panel can not provide electric energy output, the switch control unit cuts off the first switch unit and conducts the second switch unit, so that the rechargeable battery unit can output the stored electric energy, and further supply power to the load.

Description

Solar photovoltaic power generation system with adaptive power control and method of operation thereof

technical field

The invention relates to a solar photovoltaic power generation system and its operating method, especially a solar photovoltaic power generation system with adaptive electric energy control and its operating method.

Background technique

Since the second energy crisis, the search and research of alternative energy has become one of the main policies of many countries. Alternative energy basically refers to energy other than coal, oil, natural gas, nuclear energy, etc., and may include energy such as wind, sun, geothermal, tide, and Kuroshio. Since solar energy is non-polluting, non-pollution-free, and inexhaustible, the application of solar energy has considerable potential for development. Moreover, due to the active research and development of solar photovoltaic cells in recent years, they have reached a very high efficiency, so they have gradually attracted the attention of countries such as Europe, the United States, and Japan, and formulated policies to encourage their application.

The solar photovoltaic system mainly generates DC power through the photoelectric conversion of solar panels, and then converts the DC power into AC power through the power conditioner for use by loads or feeds into the mains bus to run in parallel with the mains synchronously. Therefore, in terms of function, small-scale distributed generation systems can be divided into the following three types: (1) stand-alone system, (2) grid-connection system, and (3) hybrid ( hybrid system). The independent system refers to the solar photovoltaic system that is not connected to other power sources and can only directly supply the load connected to the system. Therefore, this system is more suitable for remote areas or isolated islands on the sea where there is no mains power supply. All power sources for the load are wind power or solar power. In addition to providing power for the load, the solar power can charge the battery with excess energy. The mains parallel system refers to the parallel connection between the solar photovoltaic system and the power company network, as long as the mains power can be delivered to any place, this type of system is applicable. If the power generated by the solar photovoltaic system is greater than the demand of the load, the excess power can be fed into the city power against the current flow. Conversely, when the power generated by the solar photovoltaic system is insufficient for the load to use, the city power will be able to supply the insufficient part. In addition, in order to cope with the problem of unstable power quality, hybrid systems have been developed. When the mains power supply stops, the solar photovoltaic system can be immediately isolated from the mains by using a battery pack to form an independent power supply to provide short-term power. When the mains power is restored, the solar photovoltaic system will be connected in parallel with the mains, and the battery pack will also be charged at the same time.

Please refer to FIG. 1 , which is a block diagram of a prior art solar photovoltaic power generation system. As shown in the figure, the solar photovoltaic power generation system generates a DC voltage (not shown) and a DC current (not shown) through a solar photovoltaic panel (photovoltaic panel) 10A, and controls the DC voltage and the DC current to provide A power of 50A is supplied to a load. The solar photovoltaic power generation system includes a charge control unit 20A, a switch unit Sw, a rechargeable battery unit 30A and a power regulation unit 40A.

The charging control unit 20A is electrically connected to the solar photovoltaic panel 10A. The switch unit Sw is electrically connected to the charging control unit 20A. The rechargeable battery unit 30A is electrically connected to the solar photovoltaic panel 10A and the switch unit Sw. The power regulating unit 40A is electrically connected to the switch unit Sw and the rechargeable battery unit 30A. Wherein, the charging control unit 20A controls the switching on and off of the switching unit Sw according to the electric energy provided by the DC voltage and the DC current generated by the solar photovoltaic cell panel 10A.

When the solar photovoltaic panel 10A can provide the electric energy output, the charging control unit 20A is to turn on the switch unit Sw, and provide the electric energy through the power regulation unit 40A to supply power to the load 50A and the rechargeable battery unit 30A Charging regulation. In addition, when the solar photovoltaic cell panel 10A cannot provide the electric energy output, the power regulation unit 40A regulates the electric energy stored in the rechargeable battery unit 30A to power the load 50A.

When the solar photovoltaic panel 10A can provide the electric energy output, the electric energy needs to be provided through the power regulation unit 40A to regulate the power supply to the load 50A and the charging of the rechargeable battery unit 30A. That is, whether the solar photovoltaic panel 10A directly supplies power to the load 50A or stores the excess electric energy in the rechargeable battery unit 30A, it needs to be adjusted by the charging control unit 20A so that the solar photovoltaic panel The path of the electric energy provided by 10A to supply power to the load 50A and the path of electric energy provided by the solar photovoltaic panel 10A to charge the rechargeable battery unit 30A need to go through the charging control unit 20A.

Due to the operation of the switch components of the charging control unit 20A, there are conduction losses and switching losses of the switches, which reduces the conversion efficiency of the charging control unit 20A itself, and also causes energy consumption during the conversion process. . Therefore, when the solar photovoltaic panel 10A supplies power to the load 50A or charges the rechargeable battery unit 30A, the charging control unit 20A needs to be operated each time, which will greatly affect the overall efficiency of the solar photovoltaic power generation system.

Therefore, how to design a solar photovoltaic power generation system with adaptive power control and its operation method, for the operating conditions that a solar photovoltaic panel of the solar photovoltaic power generation system can provide electric energy output and cannot provide electric energy output, through Controlling the on and off of different switching units, and then supplying power to the load and charging the rechargeable battery unit, so as to improve the overall efficiency of the solar photovoltaic power generation system, is a major problem that the creators of this project want to overcome and solve.

Contents of the invention

To solve the above problems, an object of the present invention is to provide a solar photovoltaic power generation system with adaptive power control, so as to overcome the problems of the known technology.

Therefore, the solar photovoltaic power generation system with adaptive power control of the present invention generates a DC voltage and a DC current through a solar photovoltaic cell panel, and uses an electric energy provided by controlling the DC voltage and the DC current to control a load. powered by. The solar photovoltaic power generation system with adaptive power control includes a charge control unit, a rechargeable battery unit, a first switch unit, a second switch unit, a power regulation unit and a switch control unit.

The charging control unit is electrically connected to the solar photovoltaic panel. The charging battery unit is electrically connected to the solar photovoltaic panel and the charging control unit. The first switch unit is electrically connected to the solar photovoltaic battery panel. The second switch unit is electrically connected to the charge control unit and the rechargeable battery unit. The power regulation unit is electrically connected to the solar photovoltaic cell panel, the first switch unit and the second switch unit. The switch control unit is electrically connected to the solar photovoltaic cell panel, the first switch unit and the second switch unit. The switch control unit controls the on and off of the first switch unit and the second switch unit according to the electric energy provided by the direct voltage generated by the solar photovoltaic cell panel and the direct current.

When the solar photovoltaic cell panel can provide the electric energy output, the switch control unit turns on the first switch unit and turns off the second switch unit, so that the electric energy output by the solar photovoltaic cell panel can pass through the power supply The adjustment of the regulating unit provides power to the load to provide the required energy; at the same time, the electric energy output by the solar photovoltaic panel can be controlled by the charging control unit to charge the rechargeable battery unit.

When the solar photovoltaic cell panel cannot provide the electric energy output, the switch control unit turns off the first switch unit and turns on the second switch unit, so that the rechargeable battery unit can output the stored electric energy through the The adjustment of the power regulation unit, and then supply power to the load.

Another object of the present invention is to provide an operation method of a solar photovoltaic power generation system with adaptive power control, so as to overcome the problems of the known technology.

Therefore, the operating method of the solar photovoltaic power generation system with adaptive power control of the present invention is to generate a DC voltage and a DC current through a solar photovoltaic panel, and utilize an electric energy provided by controlling the DC voltage and the DC current, supply power to a load. The steps of the operating method of the solar photovoltaic power generation system with adaptive power control include: providing a charge control unit and a rechargeable battery unit; providing a first switch unit and a second switch unit; providing a power regulation unit; and providing a A switch control unit, the switch control unit controls the on and off of the first switch unit and the second switch unit according to the electric energy provided by the direct voltage generated by the solar photovoltaic cell panel and the direct current.

In order to further understand the technology, means and effects that the present invention adopts to achieve the predetermined purpose, please refer to the following detailed description and accompanying drawings of the present invention. It is believed that the purpose, characteristics and characteristics of the present invention can be obtained from this For specific understanding, however, the accompanying drawings are only for reference and illustration, and are not intended to limit the present invention.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail with reference to the accompanying drawings.

Description of drawings

Fig. 1 is the block diagram of the solar photovoltaic power generation system of prior art;

Fig. 2 is the block diagram of the solar photovoltaic power generation system with adaptive power control of the present invention;

Fig. 3 is a schematic block diagram of a kind of electric energy control of the solar photovoltaic power generation system of the present invention;

Fig. 4 is a schematic block diagram of another electric energy control of the solar photovoltaic power generation system of the present invention; and

FIG. 5 is a flow chart of the operating method of the solar photovoltaic power generation system with adaptive power control according to the present invention.

Reference sign

10A Solar Photovoltaic Panel

20A charging control unit

30A rechargeable battery unit

40A power conditioning unit

50A load

SW switch unit

10 solar photovoltaic panels

20 charging control unit

30 rechargeable battery units

40 power regulation unit

50 load

60 switch control unit

Sw1 first switch unit

Sw2 second switch unit

Vpv Solar Photovoltaic Panel DC Voltage

Ipv Solar Photovoltaic Panel DC Current

S1 first control signal

S2 second control signal

L1 first power supply path

L2 second power supply path

L3 third power supply path

Steps from S100 to S400

detailed description

Hereby, the technical content and detailed description of the present invention are described as follows in conjunction with the accompanying drawings:

Please refer to FIG. 2 , which is a block diagram of a solar photovoltaic power generation system with adaptive power control according to the present invention. As shown in the figure, the solar photovoltaic power generation system with adaptive power control generates a DC voltage Vpv and a DC current Ipv through a solar photovoltaic panel (photovoltaic panel) 10, and utilizes the control of the DC voltage Vpv and the DC current Ipv. The provided electric energy supplies power to a load 50 . The solar photovoltaic power generation system with adaptive power control includes a charge control unit 20 , a rechargeable battery unit 30 , a first switch unit Sw1 , a second switch unit Sw2 , a power regulation unit 40 and a switch control unit 60 .

The charging control unit 20 is electrically connected to the solar photovoltaic panel 10 . The rechargeable battery unit 30 is electrically connected to the solar photovoltaic panel 10 and the charging control unit 20 . Wherein, the charging control unit 20 controls the charging voltage and charging current required by the rechargeable battery unit 30, and adjusts the operating point (operating point) of the DC voltage Vpv and the DC current Ipv generated by the solar photovoltaic cell panel 10, To provide maximum power point tracking (maximum power point tracing, MPPT) control. The first switch unit Sw1 is electrically connected to the solar photovoltaic panel 10 . The second switch unit Sw2 is electrically connected to the charging control unit 20 and the rechargeable battery unit 30 . The power regulation unit 40 is electrically connected to the solar photovoltaic cell panel 10 , the first switch unit Sw1 and the second switch unit Sw2 . Wherein, the power regulating unit 40 is a converter (inverter) for converting DC to AC. In addition, the power regulation unit 40 is capable of regulating the operating point of the DC voltage Vpv and the DC current Ipv generated by the solar photovoltaic panel 10 to provide maximum power point tracking (MPPT) control. However, the function and circuit topology of the power regulation unit 40 are different depending on the application and user requirements, and are not limited to the above-mentioned topology. The switch control unit 60 is electrically connected to the solar photovoltaic cell panel 10 , the first switch unit Sw1 and the second switch unit Sw2 . The switch control unit 60 controls the on and off of the first switch unit Sw1 and the second switch unit Sw2 according to the electric energy provided by the DC voltage Vpv and the DC current Ipv generated by the solar photovoltaic cell panel 10 .

As for the detailed operation of the adaptive power control of the solar photovoltaic power generation system, it will be described as follows. Please refer to FIG. 3 , which is a schematic block diagram of an electric energy control of the solar photovoltaic power generation system of the present invention. When the solar photovoltaic cell panel 10 can provide the electric energy output, the switch control unit 60 is to turn on the first switch unit Sw1 and turn off the second switch unit Sw2, so that the electric energy output by the solar photovoltaic cell panel 10 is It can be regulated by the power regulation unit 40, and then the load 50 is powered to provide the required energy. At this time, the path of the electric energy provided by the solar photovoltaic panel 10 to supply power to the load 50 is shown in the figure A first power supply path L1 is shown.

At the same time, the electric energy output by the solar photovoltaic cell panel 10 can be controlled by the charging control unit 20 to charge the rechargeable battery unit 30 to store the electric energy. At this time, the solar photovoltaic cell panel 10 provides The path of electric energy charging the rechargeable battery unit 30 is shown as a second power supply path L2 drawn on the figure.

It is worth mentioning that the switch control unit 60 is electrically connected to the solar photovoltaic panel 10 to receive the DC voltage Vpv and the DC current Ipv output by the solar photovoltaic panel 10 . Moreover, the switch control unit 60 judges whether the solar photovoltaic panel 10 provides the output of electric energy according to the magnitude of the DC voltage Vpv and the DC current Ipv output by the solar photovoltaic panel 10 . That is, when the DC voltage Vpv and the DC current Ipv are not zero, the electric energy provided by the solar photovoltaic cell panel 10 is the product of the DC voltage Vpv and the DC current Ipv. Therefore, in an example of practical application, the timing when the solar photovoltaic cell panel 10 can provide the electric energy output is usually when the solar photovoltaic power generation system operates in daytime or sunny (good weather conditions). In other words, when the solar photovoltaic power generation system operates in the daytime or on a sunny day (good weather conditions), the electric energy output by the solar photovoltaic cell panel 10 can be regulated by the power regulation unit 40 to supply power to the load 50, to provide the required energy. At the same time, the electric energy output by the solar photovoltaic panel 10 can be controlled by the charging control unit 20 to charge the rechargeable battery unit 30 to store the electric energy. That is, the solar photovoltaic panel 10 can directly supply power to the load 50 , and at the same time, can store the excess electric energy in the rechargeable battery unit 30 .

When the solar photovoltaic cell panel 10 can provide the electric energy output, the power regulation unit 40 is to provide the electric energy to regulate the power supply to the load 50 and the charging of the rechargeable battery unit 30, that is, the power regulation unit 40 can adjust according to the The amount of energy required by the load 50 is to adjust the electric energy output by the solar photovoltaic cell panel 10 to be used by the load 50 , and to adjust the remaining part of the electric energy output by the solar photovoltaic cell panel 10 to the rechargeable battery unit 30 store.

In the above control of the first switch unit Sw1 and the second switch unit Sw2, the switch control unit 60 generates a first control signal S1 to control the conduction of the first switch unit Sw1, and the switch control unit 60 is to generate a second control signal S2 to control the cut-off of the second switch unit Sw2. In addition, the first control signal S1 and the second control signal S2 are complementary signals, that is, when the first control signal S1 is at a high level, the first switch unit Sw1 is turned on, and the second control signal S2 is The low level turns off the second switch unit Sw2.

Please refer to FIG. 4 , which is a schematic block diagram of another electric energy control of the solar photovoltaic power generation system of the present invention. When the solar photovoltaic panel 10 cannot provide the electric energy output, the switch control unit 60 is to turn off the first switch unit Sw1 and turn on the second switch unit Sw2, so that the rechargeable battery unit 30 can output the stored electric energy In order to supply power to the load 50 through the adjustment of the power regulation unit 40 to provide the required energy, at this time, the path of the electric energy stored in the rechargeable battery unit 30 to supply power to the load 50 is shown in the figure A third power supply path L3 is drawn.

It is worth mentioning that the switch control unit 60 is electrically connected to the solar photovoltaic panel 10 to receive the DC voltage Vpv and the DC current Ipv output by the solar photovoltaic panel 10 . Moreover, the switch control unit 60 judges whether the solar photovoltaic panel 10 provides the output of electric energy according to the magnitude of the DC voltage Vpv and the DC current Ipv output by the solar photovoltaic panel 10 . That is, when the DC voltage Vpv and the DC current Ipv are both zero, the electric energy provided by the solar photovoltaic cell panel 10 (which is the product of the DC voltage Vpv and the DC current Ipv) is also zero. Therefore, in practical examples, the solar photovoltaic cell panel 10 cannot provide the power output, which is usually when the solar photovoltaic power generation system operates at night. In other words, when the solar photovoltaic power generation system operates at night, the rechargeable battery unit 30 can output the stored electric energy through the adjustment of the power regulation unit 40, and then supply power to the load 50 to provide the required energy . That is, the rechargeable battery unit 30 can provide the stored electric energy to the load 50 when the solar photovoltaic panel 10 cannot provide the electric energy required by the load 50 . In addition, when the solar photovoltaic panel 10 cannot provide the electric energy output, the power regulation unit 40 provides the regulation of the electric energy stored in the rechargeable battery unit 30 to power the load 50, that is, the power regulation unit 40 can According to the energy required by the load 50 , the electric energy stored in the rechargeable battery unit 30 is adjusted to supply power to the load 50 .

In the above control of the first switch unit Sw1 and the second switch unit Sw2, the switch control unit 60 generates the first control signal S1 to control the cut-off of the first switch unit Sw1, and the switch control unit 60 To generate the second control signal S2 to control the conduction of the second switch unit Sw2. In addition, the first control signal S1 and the second control signal S2 are complementary signals, that is, when the first control signal S1 is at a low level, the first switch unit Sw1 is turned off, and the second control signal S2 is at a high level. The level turns on the second switch unit Sw2.

Please refer to FIG. 5 , which is a flow chart of the operating method of the solar photovoltaic power generation system with adaptive power control according to the present invention. The operation method of the solar photovoltaic power generation system with adaptive power control is to generate a direct current voltage and a direct current through a solar photovoltaic panel, and use an electric energy provided by controlling the direct current voltage and the direct current to control a load powered by. The steps of the operating method of the solar photovoltaic power generation system with adaptive power control include: providing a charge control unit and a rechargeable battery unit ( S100 ). A first switch unit and a second switch unit are provided (S200). Provide a power regulation unit (S300). Wherein, the power regulation unit is a DC-to-AC converter (inverter). In addition, the power regulation unit is capable of regulating the operating point of the DC voltage and the DC current generated by the solar photovoltaic cell panel, so as to provide maximum power point tracking (MPPT) control. A switch control unit is provided. The switch control unit controls the turn-on and turn-off of the first switch unit and the second switch unit according to the electric energy provided by the direct voltage generated by the solar photovoltaic cell panel and the direct current ( S400 ). Wherein, the switch control unit generates a first control signal and a second control signal to respectively control the on and off of the first switch unit and the second switch unit. Moreover, the first control signal and the second control signal are complementary signals, that is, when the first control signal is at a high level, the first switch unit is turned on, while the second control signal is at a low level, the switch unit is turned off. A second switch unit; or, when the first control signal is at a low level, the first switch unit is turned off, and the second control signal is at a high level, and the second switch unit is turned on.

In step (S400), when the solar photovoltaic cell panel can provide the electric energy output, the switch control unit turns on the first switch unit and turns off the second switch unit, so that the electric energy output by the solar photovoltaic cell panel In order to be able to adjust through the power regulation unit, and then supply power to the load to provide the required energy; at the same time, the electric energy output by the solar photovoltaic panel can be controlled by the charging control unit, and then charge the load The battery cells are charged to store this electrical energy. That is, when the solar photovoltaic panel can provide the electric energy output, the power regulating unit provides the electric energy for powering the load and regulating the charging of the rechargeable battery unit. At the same time, the charging control unit is to control the charging voltage and charging current required by the rechargeable battery unit, and adjust the operating point of the DC voltage and the DC current generated by the solar photovoltaic panel to provide maximum power point tracking control .

Similarly, in step (S400), when the solar photovoltaic panel cannot provide the electric energy output, the switch control unit is to turn off the first switch unit and turn on the second switch unit, so that the rechargeable battery unit can output The stored electric energy can be regulated by the power regulation unit to supply power to the load to provide the required energy. That is, when the solar photovoltaic cell panel cannot provide the electric energy output, the power regulation unit provides regulation of the electric energy stored in the rechargeable battery unit to supply power to the load.

In summary, the present invention has the following advantages:

1. The switch control unit can be used to control the on and off of the first switch unit and the second switch unit according to the morning and evening time or weather conditions, so as to provide an adaptive power control function;

2. When the solar photovoltaic panel can provide the electric energy output, it can provide different paths for the solar photovoltaic panel to supply power to the load or to charge the rechargeable battery unit, so that when the solar photovoltaic panel directly supplies power to the load , does not need to operate through the charging control unit, so that the overall efficiency of the solar photovoltaic power generation system can be greatly improved.

The technical content and technical characteristics of the present invention have been disclosed above. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding changes and All deformations should belong to the protection scope of the appended claims of the present invention.

Claims (18)

1. A solar photovoltaic power generation system with adaptive electric energy control, in order to generate a direct current voltage and a direct current through a solar photovoltaic cell panel, and use the electric energy provided by controlling the direct current voltage and the direct current to supply power to a load ; The solar photovoltaic power generation system with adaptive power control includes: A charging control unit has an input terminal and an output terminal, and the input terminal is electrically connected to the solar photovoltaic cell panel; A rechargeable battery unit is electrically connected to the solar photovoltaic battery panel and the output end of the charging control unit; a power regulation unit, for electrically connecting the solar photovoltaic panel and the load; A first switch unit has a first end and a second end, the first end of the first switch unit is electrically connected to the solar photovoltaic cell panel and the input end of the charging control unit; A second switch unit has a first end and a second end, the second end of the second switch unit is electrically connected to the second end of the first switch unit, and is further connected to the power regulation unit; the first terminal of the second switch unit is connected to the output terminal of the charging control unit and the rechargeable battery unit; and A switch control unit is to electrically connect the solar photovoltaic cell panel, the first switch unit and the second switch unit; the switch control unit is to receive the DC voltage and the DC current generated by the solar photovoltaic cell panel, and control turning on and off of the first switch unit and the second switch unit; It is characterized in that when the solar photovoltaic panel can provide the electric energy, the switch control unit turns on the first switch unit for generating a first control signal, and generates a second control signal complementary to the first control signal Turn off the second switch unit, so that the electric energy provided by the solar photovoltaic cell panel is regulated by the power regulation unit, and then supplies power to the load; at the same time, the electric energy output by the solar photovoltaic cell panel is controlled by the charging control of the unit, and then charge the rechargeable battery unit; When the solar photovoltaic panel cannot provide the electric energy, the switch control unit generates the first control signal to turn off the first switch unit and generates a second control signal complementary to the first control signal to turn on the second switch unit, so that the rechargeable battery unit can output the stored electric energy through the adjustment of the power regulation unit, and then supply power to the load. 2. The solar photovoltaic power generation system with adaptive electric energy control as claimed in claim 1, wherein when the solar photovoltaic cell panel can provide the electric energy, the first switch unit is in a conduction state and the second switch unit In the cut-off state, the power regulation unit controls the magnitude of the electric energy provided by the solar photovoltaic panel, and adjusts the magnitude of the electric energy provided to the load. 3. The solar photovoltaic power generation system with adaptive electric energy control as claimed in claim 2, characterized in that, the power regulation unit is provided by controlling the operating point of the direct current voltage and the direct current to control the solar photovoltaic cell panel The size of the electric energy. 4. The solar photovoltaic power generation system with adaptive power control as claimed in claim 3, wherein the power regulation unit provides a maximum power point tracking control to control the DC voltage and the DC current to operate at maximum power Working point, and then control the solar photovoltaic panel to provide the maximum power output. 5. The solar photovoltaic power generation system with adaptive electric energy control as claimed in claim 1, characterized in that, when the solar photovoltaic cell panel can provide the electric energy, the first switch unit is in the conduction state and the second switch unit In the cut-off state, the charging control unit controls the required charging voltage and charging current of the rechargeable battery unit, and then charges the rechargeable battery unit. 6. The solar photovoltaic power generation system with adaptive electric energy control as claimed in claim 1, wherein when the solar photovoltaic cell panel cannot provide the electric energy, the first switch unit is in a cut-off state and the second switch unit is The conduction state enables the power regulating unit to control the energy storage output of the rechargeable battery unit and adjust the electric energy provided to the load. 7. The solar photovoltaic power generation system with adaptive power control according to claim 1, wherein the switch control unit generates a first control signal and a second control signal to control the first switch unit and the On and off of the second switch unit. 8. The solar photovoltaic power generation system with adaptive power control as claimed in claim 7, wherein the first control signal and the second control signal are level complementary signals; when the first control signal is at a high level , the second control signal is at a low level; when the first control signal is at a low level, the second control signal is at a high level. 9. The solar photovoltaic power generation system with adaptive power control as claimed in claim 1, wherein the power regulation unit is a DC-to-AC converter. 10. An operation method of a solar photovoltaic power generation system with adaptive electric energy control, for generating a direct current voltage and a direct current through a solar photovoltaic cell panel, and utilizing an electric energy provided by controlling the direct current voltage and the direct current, for A load power supply; the steps of the solar photovoltaic power generation system operating method with adaptive power control include: (a) Provide a charging control unit and a rechargeable battery unit; wherein the charging control unit has an input terminal and an output terminal, the input terminal is electrically connected to the solar photovoltaic panel; the rechargeable battery unit is electrically connected to the a solar photovoltaic battery panel and the output terminal of the charging control unit; (b) providing a power regulation unit; wherein the power regulation unit is electrically connected to the solar photovoltaic panel and the load; (c) providing a first switch unit and a second switch unit; wherein the first switch unit has a first end and a second end, the first end of the first switch unit is electrically connected to the solar photovoltaic The battery board and the input terminal of the charging control unit; wherein the second switch unit has a first terminal and a second terminal, and the second terminal of the second switch unit is electrically connected to the first switch unit The second terminal is connected to the power regulation unit; the first terminal of the second switch unit is connected to the output terminal of the charging control unit and the rechargeable battery unit; (d) providing a switch control unit, the switch control unit is to receive the DC voltage and the DC current generated by the solar photovoltaic cell panel, and control the on and off of the first switch unit and the second switch unit; It is characterized in that when the solar photovoltaic panel can provide the electric energy, the switch control unit generates a first control signal to turn on the first switch unit, and generates a second control signal complementary to the first control signal. The signal cuts off the second switch unit, so that the electric energy provided by the solar photovoltaic cell panel is regulated by the power regulation unit, and then supplies power to the load; at the same time, the electric energy output by the solar photovoltaic cell panel is passed through the charging control of the control unit, thereby charging the rechargeable battery unit; When the solar photovoltaic panel cannot provide the electric energy, the switch control unit generates the first control signal to turn off the first switch unit and generates a second control signal complementary to the first control signal to turn on the second switch unit, so that the rechargeable battery unit can output the stored electric energy through the adjustment of the power regulation unit, and then supply power to the load. 11. The operation method of the solar photovoltaic power generation system with adaptive electric energy control as claimed in claim 10, characterized in that, when the solar photovoltaic panel can provide the electric energy, the first switch unit is in the conduction state and the second The second switch unit is in a cut-off state, so that the power regulation unit controls the magnitude of the electric energy provided by the solar photovoltaic panel, and adjusts the magnitude of the electric energy provided to the load. 12. The operating method of the solar photovoltaic power generation system with adaptive power control as claimed in claim 11, wherein the power regulation unit controls the solar photovoltaic cell by controlling the operating point of the DC voltage and the DC current The amount of power provided by the board. 13. The operating method of the solar photovoltaic power generation system with adaptive power control as claimed in claim 12, wherein the power regulation unit provides a maximum power point tracking control to control the DC voltage and the DC current to operate at The working point of the maximum power, and then control the solar photovoltaic panel to provide the maximum power output. 14. The operation method of the solar photovoltaic power generation system with adaptive electric energy control as claimed in claim 10, characterized in that, when the solar photovoltaic panel can provide the electric energy, the first switch unit is in the conduction state and the second The second switch unit is in a cut-off state, so that the charging control unit can charge the rechargeable battery unit by controlling the required charging voltage and charging current of the rechargeable battery unit. 15. The operation method of the solar photovoltaic power generation system with adaptive electric energy control as claimed in claim 10, characterized in that, when the solar photovoltaic panel cannot provide the electric energy, the first switch unit is in a cut-off state and the second switch unit The switch unit is in the conduction state, so that the power regulation unit controls the energy storage output of the rechargeable battery unit, and adjusts the electric energy provided to the load. 16. The operation method of the solar photovoltaic power generation system with adaptive power control as claimed in claim 10, characterized in that, in step (d), the switch control unit generates a first control signal and a second control signal , so as to respectively control the turn-on and turn-off of the first switch unit and the second switch unit. 17. The operating method of the solar photovoltaic power generation system with adaptive power control as claimed in claim 16, wherein the first control signal and the second control signal are quasi-complementary signals; when the first control signal is high level, the second control signal is low level; when the first control signal is low level, the second control signal is high level. 18. The operating method of the solar photovoltaic power generation system with adaptive power control as claimed in claim 10, wherein the power regulation unit is a DC-to-AC converter.