KR101608467B1 - Hybrid solar cell apparatus - Google Patents

Abstract

The present invention provides a hybrid type photovoltaic power generation apparatus which automatically supplies surplus power back to KEPCO to help solve the power shortage of the entire country, and further, it is possible to easily assemble and disassemble the system, and in particular, The present invention is to provide a hybrid solar photovoltaic power generation apparatus capable of assembling and changing at will. To this end, the hybrid photovoltaic device according to the present invention includes at least one solar cell module 200, 200-1; A battery (400) charged by receiving generated DC power from the at least one solar photovoltaic module; An inverter 370 inverting the power of the battery 400 to output AC power to the outside; A switching device for switching the output of the inverter 370 to supply AC power to the AC power consuming device 700 consuming the commercial AC power or switching the supply of the surplus power back to the commercial power system 600 (800); And a control box (300) for charging the battery of the generated DC power from the at least one photovoltaic power generation module and controlling the switching device, and for externally outputting and supplying back to the commercial power system .

Description

[0001] HYBRID SOLAR CELL APPARATUS [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hybrid solar photovoltaic power generation apparatus, and more particularly, to a hybrid photovoltaic power generation system in which a stand-alone type and a grid type are combined.

Further, in the present invention, a female or male connector connected to one end and the other end of each of positive (+) and negative (-) cables, a female or male connector connected to the end of a Y- The present invention relates to a hybrid solar photovoltaic power generation apparatus in which a fuse adapter capable of replacing a connection box is provided at the end of each cable while facilitating the fastening and disconnection of each parallel cable through a connector.

2. Description of the Related Art In recent years, research and development on photovoltaic power generation, in which solar energy is converted into electric energy by replacing energy such as coal and oil, is actively under way.

The photovoltaic power generation module provided for the photovoltaic power generation is mainly aimed at accumulating the light emitted from the sun and converting it into electric energy. For this purpose, a photovoltaic power generation module having various module characteristics is being developed.

In addition, such a photovoltaic power generation module is used as a system type in which electric power is supplied to KEPCO by reverse supply of surplus electric power to KEPCO's substation, The present invention relates to a hybrid solar photovoltaic device in which the independent type and the grid type are combined.

First, as a hybrid type solar power generation apparatus according to the first conventional technique, there is one such as a Korean Registered Utility Model No. 20-0303224 (Hybrid type solar power generation system).

1 shows a schematic diagram of a solar power generation system connected to the gas power generation system of the first prior art.

As shown in FIG. 1, the solar power generation system 1 according to the first prior art collects solar heat by using a solar collecting module 10 installed in a house or a building to produce necessary electric power or supply heat. The solar collecting module 10 is a known device and is installed on a roof or a roof of a house or on the roof of a building. Collected solar heat is directly converted to electric power by using heat or by inverter using supply lines (L1, L2, L3, L4) and then used as electric energy. That is, the heat is directly used for heating and hot water through the supply line L1, or the heat is used for heating and hot water through the supply line L2, and the remaining part is converted into electrical energy using a charger and stored in the battery. The supply line L3 shows another way of using the heat supplied from the solar collecting module 10, and some of the heat is converted into electric energy through an inverter and then connected to a consumer, and the remaining part is stored in a battery using a charger In other methods, the generator is operated to change the electric energy. As shown in FIG. 1, the electric energy may be used as a direct current system or an alternating current system, which can be used as any system as needed. The other supply line L4 shows another way of using the solar heat of the dust collecting module 10. That is, in a case where a sufficient dust collecting module 10 is provided, solar heat is converted into electrical energy using an inverter, and then supplied to various customers by using a power supply system line. That is, they are supplied directly to the customer, or the power is delivered to the supply network through the grid-linked totalizer or the totalizer and the power is supplied through the supply chain.

However, the system of the first prior art described above only discloses a schematic concept of a general grid solar power generation system, and does not disclose a specific configuration, switching means and method, and is not suitable for realization with actual technology Especially, it is not possible to supply the reverse electric power to KEPCO with surplus electric power and to reverse the KEPCO meter.

Next, the hybrid type solar power generation apparatus according to the second conventional technique is disclosed in Korean Patent Laid-Open No. 10-2011-0066646 (apparatus and method for electric power storage).

The second conventional technique relates to a power storage device and a power storage control method capable of storing power supplied from a power generation system or a power system, supplying power stored in a power failure to a load, and supplying stored power to a power system , In order to stably perform an uninterruptible power supply (UPS) function in a power storage system.

That is, the power storage system 100 according to the second prior art includes a power generation system 20 for generating electrical energy, a power system 30 for transferring electrical energy, 40 or power system 30 and a load 40 that receives power from power storage 10 or power system 30 and consumes power.

The power system 30 includes a power plant, a substation, a power transmission line, and the like, and transfers electric power to the loads 40 connected to the power system 30. The power system 30 supplies power to the power storage device 10 or the load 40 when it is in a normal state and receives and delivers the power supplied from the power storage device 10. The power supply from the power system 30 to the power storage device 10 or the load 40 is stopped and the power is supplied from the power storage device 10 to the power storage device 10 when the power system 30 is in an abnormal state due to power outage, The power supply to the system 30 is also stopped.

The power generation system 20 generates electrical energy and outputs it to the power storage device 10. The power generation system 20 can generate electrical energy using renewable energy such as solar heat, sunlight, wind power, tidal power, and geothermal power. Particularly, a solar cell that generates electric energy using solar light is easy to install in each home or factory, and is suitable for application to the power storage device 10 distributed to each household.

The load 40 consumes power output from the power storage device 10 or the power system 30 and may be, for example, a home, a factory, or the like.

The power storage device 10 stores the power supplied from the power generation system 20 or the power system 30 and supplies the stored power to the power system 30 or the load 40. [ The power storage device 10 includes at least one battery cell 110, a battery management unit 120, a bidirectional converter 130, a bidirectional inverter 140, a first switch 150, a second switch 160, Unit 170, an integrated controller 180, and a voltage stabilizer 190.

The at least one battery cell (110) stores power supplied from the power generation system (20) or the power system (30). The operation of at least one battery cell 110 is controlled by the battery management unit 120.

The battery management unit 120 is connected to at least one battery cell 110 to control charging and discharging operations of the at least one battery cell 110. The discharging current from the at least one battery cell 110 to the bidirectional converter 130 and the charging current from the bidirectional converter 130 to at least one battery cell 110 are controlled in accordance with the control of the battery management unit 120 .

The battery management unit 120 may include an overcharge protection function, an overcharge protection function, an overcurrent protection function, an overvoltage protection function, an overheat protection function, a cell balancing function, and the like in order to protect at least one battery cell 110 Can be performed. To this end, the battery management unit 120 may monitor voltage, current, temperature, remaining power, and life of at least one battery cell 110.

According to the second prior art, the battery management unit 120 detects the remaining power amount of at least one battery cell 110 to control the operation of the power storage device 10 and outputs the remaining power amount to the integrated controller 180 And the like. The residual power amount can be detected, for example, by measuring the output voltage level of at least one battery cell 110.

The bidirectional converter 130 converts the power output from at least one battery cell 110 into a DC-DC voltage at a voltage level required by the bidirectional inverter 140, that is, at the DC voltage level of the first node N1. And DC-DC converts charge power flowing through the first node N1 to a voltage level required in at least one battery cell 110. [ The charging power is supplied from the power generation system 20 and is the power converted by the power conversion unit 170 or the power supplied from the power system 30 through the bidirectional inverter 140. For example, when the voltage level of the first node N1 is DC 380V and the voltage level required in the at least one battery cell 110 is DC 100V, the bidirectional converter 130 is connected to at least one battery cell 110 ), The charging power from the first node N1 is DC-DC-converted from DC 380V to DC 100V, and when discharging at least one battery cell 110, the discharging power is changed from DC 100V to DC 380V -DC conversion.

The bidirectional inverter 140 rectifies the AC voltage input from the power system 30 through the first switch 150 and the second switch 160 to a DC voltage for storing the at least one battery cell 110, And converts the DC voltage output from the power generation system 20 or the at least one battery cell 110 into an AC voltage of the power system 30 and outputs the AC voltage. In this case, the AC voltage output to the power system 30 must meet the reference of the power system 30. For this purpose, the bidirectional inverter 140 converts the phase of the AC voltage output to the power system 30 into the power system 30, To suppress the generation of reactive power, and to adjust the AC voltage level. The bidirectional inverter 140 may also include a filter for removing harmonics from the AC voltage output to the power system 30 and may include a voltage range limitation, power factor correction, DC component rejection, transient phenomena protection, The same function can be performed.

The first switch 150 and the second switch 160 are connected in series between the bi-directional inverter 140 and the power system 30 to provide a current flow between the power storage device 10 and the power system 30 . If there is no abnormality in the power system 30, the first switch 150 is turned on and the second switch 160 is also turned on so that the power generated by the power generation system 20 is supplied to the load 40 (30), and power supply from the power generation system (20) to the power storage device (10) is also possible. The first switch 150 is turned off and the second switch 160 is turned on to supply power generated by the power generation system 20 to at least one battery cell 110 and the power system 30 It is also possible to supply electric power to the load 40. [ When the power system 30 is in an abnormal state, the first switch 150 is turned on and the second switch 160 is turned off so that power is supplied from the power storage device 10 to the power system 30 And supplies power to the load 40 from the power storage device 10 and / or the power generation system 20. The first switch 150 and the second switch 160 may be implemented with various types of switching elements, such as a field effect transistor (FET), a junction transistor (BJT), and the like. The switching operation of the first switch 150 and the second switch 160 can be controlled by the integrated controller 180. [

The power conversion unit 170 converts the power generated from the power generation system 20 into a DC voltage of the first node N1. The operation of the power conversion unit 170 may vary depending on the type of the power generation system 20. When the power generation system 20 is a solar cell, the power conversion unit 170 converts the DC voltage output from the solar cell to the DC voltage of the first node N1, and outputs the maximum power output May be an MPPT converter using a maximum power point tracker (MPPT) algorithm that follows voltage.

Although the above-described second prior art discloses a more concrete hybrid solar photovoltaic power generation device, it is still only a schematic block diagram and is not suitable for realization with actual technology, And the technique of turning the electric meter counter upside down is not proceeding.

On the other hand, as a control apparatus of the hybrid type solar power generation system of the third prior art, there is a system such as Korean Patent Laid-Open Publication No. 10-2014-0040557 (hybrid generator and control method thereof).

3, the hybrid generator 10 according to the third prior art includes a generator 20 for generating electric power, a generator 20 connected to the generator power supply system 300, And a battery 210 connected to the battery 210 and receiving power generated by the power generation device 30. The battery 210 is connected to the power supply system 300. The power supply system 300 includes a grid- A power converter 40 connected to the power generator 20 and connected to any one of the grid inverter 30 and the power converter 40 to charge the power generated by the power generator 20 The power of the power generation apparatus 20 is transmitted to the grid power supply system 300 through the grid connection inverter 30 during normal operation of the grid power supply system 300, In the abnormal operation of the grid power supply system 300, So that the power of the battery 210 to be charged can be supplied to the load 400.

Here, the solar cell 20, which produces electric energy using solar light, is easily installed in a home or a factory, and a plurality of modules can be separately provided, will be.

The grid-connected inverter 30 is for converting the electric power generated from the solar cell 20 into an AC voltage and supplying the AC voltage to the grid power supply system 300. The grid-connected inverter 30 operates in grid connection, The battery 210 of the self-contained power generation facility 100 is not operated.

The grid interconnect inverter 30 includes a filter for removing harmonics from the AC voltage output to the grid power supply system 300. The grid interconnect inverter 30 suppresses the generation of reactive power and controls the phase of the output AC voltage, And a phase locked loop (PLL) circuit for synchronizing the phase of the AC voltage of the battery 300. In addition, the grid inverter 30 (On Grid Invert) 20 can perform functions such as limiting the voltage fluctuation range, improving the power factor, removing the DC component, and protecting the transient phenomena.

By installing a filter for eliminating harmonics in the grid-connected inverter 30, the harmonics can be absorbed and removed, the fluidity of the system and the space problem between the capacitive lines can be solved, Can be maintained for a long time.

If it is not necessary to supply the power generated by the solar cell 20 to the grid power supply system 300, the operation of the grid-connected inverter 30 is stopped in order to minimize power consumption.

The power conversion unit 40 may be constituted by a converter or a rectifying circuit depending on the type of the solar cell 20. That is, when the solar cell 20 produces DC power, it becomes a converter for converting DC power into DC power.

The power conversion unit 40 performs maximum power point tracking (MPPT) to maximize power generated by the solar cell 20 when the solar cell 20 generates solar power. ) MPPT converter that performs a control scheme.

The MPPT control method is a technique commonly used in DC-AC power converters in PV systems, and it maintains the maximum power value delivered to the load, thereby performing an algorithm that avoids efficiency loss due to changes in temperature and irradiation dose. do.

When the power generated by the solar cell 20 is absent, the power conversion unit 40 stops operation and minimizes the power consumed by the converter.

The automatic switching system 50 is connected to the grid connection inverter 30 during normal operation of the grid power supply system 300 to allow power to be sent to the grid power supply system 300, And is connected to the power conversion unit 40 when it returns from the abnormal operation or the normal operation in the abnormal operation. Also, if the system is composed of a plurality of power generation modules as needed, it can be converted into a series or a parallel. The automatic switch 50 may be provided for stabilizing the level of the input DC link voltage, and may be implemented as a capacitor, for example. The capacitor may be an aluminum electrolytic capacitor, a high-voltage film capacitor, or a multi-layer ceramic capacitor (MLCC) for high-voltage and high-current applications.

The automatic switching device 50 is connected to the power conversion unit 40 to supply power of the solar cell 20 until the power conversion unit 40 completes charging the battery 210. [

In the hybrid generator 10 according to the preferred embodiment of the present invention, the automatic switching device 50 is separately provided. However, when the automatic switching device 50 includes the power converting unit 40, the grid- ). ≪ / RTI >

As described above, according to the hybrid power generator 10 of the present invention, during normal operation of the grid power supply system 300, power is supplied to the grid power supply system 300 and the load 400, 300 and the power of the battery 210 of the independent power generation facility 100 to output a constant power to the load 400. In case of abnormal operation of the grid power supply system 300, The system 300 is shut off and the load 400 is supplied with power.

That is, the present invention supplies power to the grid power supply system 300 and the load 400 in response to an abnormal operation of the grid power supply system 300 or a change in the load, The system power supply system 300 for separating the battery 210 of the independent power generation facility 100 from the circuit and supplying electric power is used in normal operation of the system 100. In case of abnormal operation of the system power supply system 300, There is an effect that the load 400 is supplied to the power stored in the battery 210 of the independent power generation facility 100 by being separated from the grid power supply system 300.

The hybrid power generator 10 including the solar cell 20, the grid inverter 30, the power converter 40 and the automatic switch 50 is modularized to supply the grid power supply system 300 and the battery 210 .

As described above, in the case of the hybrid generator 10, the solar battery 20, the grid inverter 30, the power converter 40, and the automatic switcher 50 are modularized, There will be.

However, as described above, the third conventional technique is still only a schematic block diagram, and thus it is not suitable to be realized by actual technology. Also, the technique of supplying the counter electric power backward to the electric power source side with the surplus electric power, I can not.

Moreover, neither the first prior art to the third prior art nor the convenience of combining the respective modules in order to construct the whole system are implied at all.

That is, the photovoltaic power generation module used for the photovoltaic power generation is manufactured in a module form in which a plurality of solar cells are arranged in a package in accordance with characteristics of a battery capacity, etc., and the solar cells are electrically connected to each other by wires, The end portion of the wire is connected to the connection terminal of the junction box mounted on the back of the solar power generating module. When the means for easily connecting each module is provided, the ready-made product, which has been mass- , Considering the power usage capacity of each household and the solar cell installation space of each building, it is possible to instantly install and change in the field if only a simple training is given, and it is possible to activate substantially, and anyone should be able to connect them easily.

A junction box connection apparatus for a solar module according to the related art is disclosed in Japanese Patent Application Laid-Open No. 10-1077110 (hereinafter referred to as "fourth prior art").

As shown in FIG. 4, the junction box connection apparatus of the solar power generation module according to the fourth prior art includes solar power generation modules 100a, 100b, and 100c connected in series with positive (-) or negative A solar cable 130 for electrically connecting adjacent junction boxes 111a to 111c and 112a to 112c to each other; A first plug 140 provided at one end of the solar cable and electrically coupled to the positive terminal or the negative terminal of the junction box in a detachable manner and a second plug 140 provided at the other end of the junction box, And a second plug (150) that is electrically detachably coupled to the positive (+) terminal or the negative (-) terminal, and the female and male assembling structures assembled with the junction box are provided differently from the first plug, The plug 140 includes a first plug body; A first terminal portion protruding from a central portion of the first plug body; And a plurality of first assembling ribs provided adjacent to the first terminal portion and having a first assembling tooth formed on an outer surface thereof, wherein the first assembling teeth formed on the plurality of first assembling ribs have different lengths And the second plug (150) comprises: a second plug body; A second terminal portion recessed from a central portion of the second plug body; And a plurality of second assembling ribs provided adjacent to the second terminal portion and having a second assembling tooth formed on the inner surface thereof.

On the other hand, another example of prior art connector and a solar cell module including the same are disclosed in Japanese Patent Application No. 10-1283115 (hereinafter referred to as " Fifth Prior Art ").

5 and 6, the connector according to the fifth conventional technique and the solar cell module including the same according to the fifth conventional technique are provided with a first solar cell 12, 22 including a first cable 12, 22 and a first connector 100, Module 10; And a second solar cell module 20 including a second cable 12 and 22 and a second connector 102. The first connector 100 includes a first body 110, And the second connector 102 includes a first connector 120, a first connector 140, an eleventh groove 120a and a twelfth groove 120b located in the first connector, The second body 112, the second connection part 122, the second fixing part 142, the twenty first groove 122a and the twenty second groove 122b located in the second connection part Wherein the first connector is located inside the first body and the second body, the first connector and the second connector are connected, and the first and second moving parts 130 and 132 are connected to each other, Is connected to the first and second connection portions 120 and 122. [

However, the connectors of the fourth prior art and the fifth prior art are complicated, so that it is difficult for a general person who does not have basic knowledge or experience about electricity to install them. It is difficult to apply it in the reality where activation is possible.

First Prior Art: Korean Registered Utility Model No. 20-0303224 (Hybrid Photovoltaic Power System) Second Prior Art: Korean Patent Publication No. 10-2011-0066646 (Apparatus and Method for Power Storage) Third Prior Art: Korean Patent Publication No. 10-2014-0040557 (Hybrid Generator and Control Method Thereof) 4th Prior Art: Registration No. 10-1077110 (Name: Junction Box Connection Device of Photovoltaic Module, Date of Registration: October 20, 2011) Fifth Prior Art: Registration No. 10-1283115 (name: connector and a solar cell module including the same, date of registration: July 01, 2013)

The hybrid type solar power generation technology according to the first to third prior arts described above is close to the concept without detailed details of each required module and is not practical in actual application, So that the technique of turning the electric meter counter upside down can not be performed.

In particular, if the necessary modules are not connected by an expert, it is not easy to connect and the manual is detailed. Even if the connection is possible, it is necessary to strip and connect the wires. There was a problem in activating in the form of prefabricated ready-made products at the factory.

Further, in the case of the connector connection, in the above-described fourth and fifth related arts, a plurality of power generation modules are connected in series, so that one solar power generation module is short- There is a problem that the whole solar power generation system is not operated.

According to the fourth conventional art and the fifth conventional art, the coupling and separation of the cable and the connector connected to the photovoltaic power generation module are complicated and the waterproof and dustproof means are not separately provided. Therefore, There is a problem that breakdown easily occurs.

In addition, the conventional arts according to the fourth conventional art and the fifth conventional art have a disadvantage in that a junction box and a junction box, which are connected to the solar power generation module and to which a plurality of connectors are coupled, must be separately provided.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above problems occurring in the prior art, and it is an object of the present invention to provide a hybrid solar photovoltaic generation apparatus which automatically supplies surplus power back to KEPCO, In addition, it is possible to easily assemble and disassemble the solar cell, and in particular, to provide a hybrid solar photovoltaic device which is packaged and can be assembled and changed freely according to each situation.

Further, in the connecting for connecting the modules, the solar power generator is integrally combined with the female or male connectors connected to one end and the other end of the positive (+) and negative (-) cables, Shaped shunt connected to the end of the Y-shaped shunting device through a female or male connector connected to the end of the Y-shaped shunting device.

Another object of the present invention is to provide a hybrid type solar power generation system in which a junction box and a junction box used in the prior art are replaced by a fuse adapter for preventing overcurrent and reverse current from being easily connected and disconnected at the ends of cables, Device.

It is still another object of the present invention to provide a hybrid solar photovoltaic generation apparatus having waterproof and dustproof means in a female connector and a fuse adapter provided in the parallel cable.

These and other objects of the present invention will be apparent to those skilled in the art without departing from the scope of the present invention by the appended claims.

According to an aspect of the present invention, there is provided a hybrid photovoltaic power generation system comprising at least one solar power generation module (200, 200-1); A battery (400) charged by receiving generated DC power from the at least one solar photovoltaic module; An inverter 370 inverting the power of the battery 400 to output AC power to the outside; A switching device for switching the output of the inverter 370 to supply AC power to the AC power consuming device 700 consuming the commercial AC power or switching the supply of the surplus power back to the commercial power system 600 (800); And a control box (300) for charging the battery of the generated DC power from the at least one photovoltaic power generation module and controlling the switching device, and for externally outputting and supplying back to the commercial power system The +/- terminals between the fuse adapter 250 at the ends of the cables 230 and 240 of the at least one solar power module and the solar cell input terminal 311 of the control box 300 are respectively configured as opposite connectors And the +/- terminal itself between the solar cell input terminals 311 of the control box 300 is constituted by an opposite connector and the fuse adapter itself at the ends of the +/- cables 240 and 230 of each photovoltaic power generation module A first cable 201 and a second cable 202 each of which is constituted by a connector of the opposite type and extended to one end and the other end of the reverse current protection unit 205 installed on each of the at least one solar photovoltaic module; And a first male connector (210) at an end of the first cable (201) and a first female connector (220) at an end of the second cable (202); And a second female connector 220 coupled to the first female connector 210 and the first female connector 220 and a second male connector 220 coupled to one end of the +/- cables 240 and 230, And the fuse adapters 250 coupled to the male and female connectors of the solar cell input terminal 311 of the control box 300 are connected to the other end of the +/- cables 240 and 230, .

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Also, preferably, the solar power generation module 200 includes a plurality of solar cells arranged in a light thin plate, and each solar cell is connected in series and in parallel, and finally connected to the cables 230 and 240 through a male- And the control box 300 also has male and female connectors to be coupled to the fuse adapter 250.

The switching device 800 may further include an AC input terminal 801 connected to the commercial power system 600, an AC output terminal 802 connected to the AC power consumption device 700, A first relay switch 810 positioned between the AC output terminal 802 and the AC output terminal 802 and a second relay switch 820 located between the inverter 370 and the AC output terminal 802 .

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Most preferably, the other end of the +/- cables 240 and 230 is connected to the third male connector 210 or the third female connector 220 via a fuse adapter 250 for blocking overcurrent and reverse current And is detachably fastened.

According to the hybrid solar photovoltaic power generation apparatus according to the present invention, the solar battery module charges the battery and supplies power to the independent load. Then, the battery is charged to some extent, The present invention also provides a hybrid type photovoltaic power generation apparatus which can contribute to solving the power shortage of the entire country by supplying power to the solar power generation apparatus.

In addition, the hybrid solar photovoltaic apparatus according to the present invention can be easily assembled and disassembled by merely fitting the male and female connectors to each of the necessary modules. In particular, the hybrid solar power generator can be assembled and disassembled, There is an advantage in that it is possible to provide a photovoltaic device of the type.

Furthermore, since it is possible to easily increase the capacity according to the capacity, it is flexible and easy to connect between the modules. That is, each of the cables with the female or male connectors connected to one end and the other end of each positive (+) and negative Shaped connectors connected to the ends of the Y-shaped shunts integrally joined to the intermediate portion of the cable connector, and the parallel cables can be easily connected and disconnected by a fuse adapter The connector and the fuse adapter provided in the parallel cable are provided with waterproofing and dustproofing means so that the photovoltaic power generation module exposed to the outside can be replaced without failure It can be used for a long time.

Additional features and advantages of the present invention will become more apparent from the following description.

1 is a schematic diagram of a solar power generation system connected to a gas generating system according to the first prior art;
2 shows a power storage system according to a second prior art;
3 is a conceptual diagram showing a control apparatus of a solar power generation system according to a third prior art.
4 is a view for explaining an apparatus for connecting a junction box of a solar photovoltaic module according to a fourth prior art.
5 and 6 are views for explaining a connector according to a fifth related art and a solar cell module including the same.
7 illustrates a configuration of a solar cell connector assembly according to the present invention.
8 is a view showing a photograph of a male and female connector applied to a connector according to the present invention.
9 is an exploded perspective view of a male connector applied to a connector according to the present invention.
10 is an exploded perspective view of a female connector applied to a connector according to the present invention.
11 is an exploded perspective view showing a detailed configuration of a fuse adapter applied to a connector according to the present invention.
12 is a plan view photograph of a detailed configuration of a fuse adapter applied to a connector according to the present invention;
13 is a view showing a part of the structure in which a receiving piece is inserted into a hole of a fuse adapter;
Fig. 14 is a configuration diagram for explaining the basic concept of the hybrid photovoltaic device according to the present invention; Fig.
15 is an embodiment of a switch device of a hybrid photovoltaic device according to the present invention.
16 is a combiner photograph of the hybrid photovoltaic device of FIG. 15;
FIG. 17 is a block diagram of a control unit connected to a hybrid type solar power generation apparatus according to the present invention. FIG.
Fig. 18 is a circuit diagram of a controller of the hybrid photovoltaic device of Fig. 17; Fig.
19 is a flowchart of a control operation of the hybrid photovoltaic device according to the present invention.

Hereinafter, a hybrid photovoltaic power generation apparatus according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Prior to the detailed description of the present invention, when the same or corresponding elements in the drawings are given the same reference numerals, and the detailed description of the related known structure or function is deemed to blur the gist of the connector relating to the present invention A detailed description thereof will be omitted.

Also, in the present specification, the following embodiments and embodiments are to be considered as being illustrative and not restrictive, and the invention is not to be limited to the details given herein but is to be accorded with the scope of the appended claims and their equivalents, It can be changed to another embodiment.

Prior to describing the hybrid solar photovoltaic power generation apparatus according to the present invention, Patent Application No. 2014-0076374 (connector assembly of a parallel cable for a solar module), which is a prior application of the present inventor, And the technical content of this prior application is also not a known technology but a part of the present invention.

7 is a view showing a configuration of a solar cell connector assembly according to the present invention, Fig. 8 is a view showing a photograph of a male and female connector applied to a connector related to the present invention, Fig. 9 is a view showing a connector FIG. 10 is an exploded perspective view of a female connector to be applied to a connector according to the present invention, FIG. 11 is an exploded perspective view showing a detailed structure of a fuse adapter applied to a connector according to the present invention, FIG. 12 is a plan view of a detailed configuration of a fuse adapter applied to a connector according to the present invention, and FIG. 13 is a view showing a configuration of a connector assembly of a parallel cable for a solar module according to an embodiment of the connector related to the present invention to be.

13, a connector assembly of a parallel cable for a solar module according to an embodiment of the connector related to the present invention includes a reverse current protection unit 205 installed in each solar module 200, 1 cable 201 and a second cable 202 are extended and a male type connector 210 is connected to a distal end of the first cable 201 and a male type connector 210 is connected to a distal end of the second cable 202. [ (Female) type connector 220 are connected.

The male connector 210 connected to the first cable 201 is branched from the minus cable 230 connected to the power box or the control box 300 through the Y- And the female connector 220 connected to the second cable 202 is connected to the power box or the control box 300 via a plus (+) connector connected to the power box or the control box 300, Connected to the male connector 210 connected to the end of the fourth cable 244 branched from the cable 240 via the Y-shaped shuner 235 so that the solar modules 200 are connected to each other Connected in parallel.

At this time, the male connector 210 or the female connector 220 may be further connected to one end of each of the negative cable 230 and the positive cable 240, and the negative cable 230 The male connector 210 or the female connector 220 is connected to the other end of the positive (+) cable 240 and the fuse adapter 250 that blocks the overcurrent and the reverse current, respectively.

More specifically, the solar power generation module 200 includes a plurality of solar cells 203 inside the solar power generation module 200, and converts the solar energy into electric energy. The solar power generation module 200 includes a plurality of solar power generation modules 200 A reverse current protection unit 205 for blocking a reverse current generated by a short circuit or the like from a solar power generation module 200 installed immediately adjacent to the solar power generation module when connected in parallel is installed at the upper center of the back surface of the solar power generation module.

The first cable 201 and the second cable 202 extend from one end of the reverse current protection unit 205 to the other end of the reverse current protection unit 205. The ends of the first cable 201 and the second cable 202 Male-type connectors 210 or female-type connectors 220 are connected to the terminals.

The male connector 210 connected to the first cable 201 is connected to the power box or the control box 300 through a Y cable Shaped connector 220 connected to the distal end of the third cable 233 branched through the form shaper 235 and the female connector 220 connected to the second cable 202 is connected to the power box or control Connected to the distal end of a fourth cable 244 branched from a "Y-shaped " type shunter 235 which is laid approximately 90 DEG to the right from the body of the positive (+) cable 240 connected to the box 300. [ And is connected to the connector 210.

That is, as can be seen from the above description, a plurality of neighboring solar modules 200 are connected in parallel to each other, and one of the plurality of solar modules 200 is short- It is possible to generate electricity by another solar power generation module 200 that has not failed.

13, the female connector 220 or the male connector 210 is connected to one end and the other end of the negative (-) cable 230 and the positive (+) cable 240, The male or female connectors 210 and 220 connected to the ends of the respective Y-shaped shunts 235 connected to the male or female connectors 210 and 220 of the photovoltaic module 200, respectively, The photovoltaic module 200 may be further connected in parallel.

Each of the "Y-shaped " type shunts 235 has a triangular wing 237 made of the same material as the outer surface of the cable on the outside of the shunter, Thereby preventing penetration by rain, dust, etc.

In the following, the detailed configuration of the male and female connectors 210 and 220 will be described with reference to Figs. 7 to 10. Fig.

7 to 9, a male connector 210 applied to a connector according to the present invention includes a male body 2110, a tubular terminal 2120, a sealing ring 2130, a pinch ring 2140, And a cable input sealing cap 2150.

Specifically, the male body 2110 has a cylindrical terminal cover 2111 having a predetermined length and a hole formed therein and having a hook at a rear end thereof, and a cylindrical terminal cover 2111 having a circular shape along the rear outer circumferential surface of the terminal cover 2111 A circular rubber ring 2112 which is mounted on the formed recessed groove and exerts a waterproof and dustproof effect when engaged with the insertion hole 2211 of the female type body portion 2220 of the female type connector 220 to be described later, Two protruding plugs 2113 integrally connected to the terminal of the terminal cover 2111 and provided on a body having a diameter larger than the diameter of the terminal cover and having a locking protrusion 2114 formed at the distal end thereof in the circumferential direction, And a coupling screw portion 2115 formed with a thread on the outer peripheral surface of the rear portion of the male body 2110.

At this time, a locking protrusion 2116 is formed on the rear inner circumferential surface of the male body 2110, that is, behind the terminal cover 2111 so that a sealing ring 2130 described later can be inserted and hooked.

The tubular terminal portion 2120 is inserted into the terminal cover 2111 of the male body 2110 and has a cylindrical tubular connection terminal 2121 formed at the tip portion and a tubular connection terminal 2121 integrally connected to the tubular connection terminal, And a wiring fixing portion 2123 which is integrally joined to the cable wiring while being bent inward by the pressing.

The sealing ring 2130 surrounds the contact portion of the wire fixing portion 2123 formed at the rear end portion of the tubular connection terminal 2121 and the wire integrally joined with the wire fixing portion and extends in the backward direction of the male body 2110 And is supported by an engagement protrusion 2116 formed on the inner circumferential surface to perform a waterproof and dustproof function.

The pinch ring 2140 accommodates one end of the sealing ring 2130 and is composed of a plurality of tightening pieces 2141 folded in one direction and the plurality of tightening pieces 2141 are formed in a water- And are adhered to each other to block external moisture and dust from entering.

The cable input hermetically sealed cap 2150 is formed in a substantially cylindrical conical shape having a cable receiving hole formed at a distal end thereof and having a tapered shape from one end to the other end so as to accommodate the pinch ring 2140, And is coupled together with an engaging thread 2115 formed on the rear outer circumferential surface of the male body 2110.

That is, the male connector 210 seals the contact between the engagement thread 2115 formed on the outer circumferential surface of the male body 2110 and the cable input sealing cap 2150 through the sealing ring 2130, The end of the cable input hermetically sealed cap 2150 may be sealed through the ring 2130 and the pinch ring 2140 to prevent moisture and dust from being introduced.

7, 8 and 10, a female connector 220 applied to a connector according to the present invention includes a female-type body portion 2210, a needle-like terminal portion 2220, a sealing ring 2230, A pinch ring 2240 and a cable input sealing cap 2250.

Specifically, the female type body portion 2210 includes a hollow insertion hole 2211 formed to accommodate a cylindrical terminal cover 2111 provided in the male type body portion 2110, Two fasteners 2212 formed so that two protruding plugs 2113 formed on the protruding plug 2113 are fastened or separated and the protruding plug 2114 formed at the end of the protruding plug 2113 is exposed to the outside when fastened, And a sealing ring 2230 which is formed on a rear inner circumferential surface of the female body 2210, that is, a rear end of the insertion hole 2210 and which is described later, And a hooking jaw 2216 for hooking the jaws 2216 therebetween.

The needle-shaped terminal portion 2220 is inserted into the insertion hole 2211 of the female-type body portion 2210, and when the male-type body portion 2110 and the female-type body portion 2210 are engaged, Shaped connection terminal 2221 which is inserted and connected to the tubular connection terminal 2121, a wire fixing portion 2223 which is integrally connected to the needle-shaped connection terminal and which has a semicylindrical shape and is integrally joined to the cable wiring while being bent by compression, ).

The sealing ring 2230 surrounds the contact portion of the wire fixing portion 2223 formed at the rear end portion of the needle-like connecting terminal 2221 and the wire integrally coupled to the wire fixing portion, Is a cylindrical rubber ring supported by an engagement protrusion 2216 formed on the inner peripheral surface.

The pinch ring 2240 is provided with a plurality of fastening pieces 2241 for housing one end of the sealing ring 2230 and folded and unidirectionally unlike the pinch ring 2140 provided in the male body 2110, And the plurality of tightening pieces 2241 are tightly adhered to the outer surface of the cable in a watertight structure to block the inflow of moisture and dust from the outside.

The cable input hermetically sealed cap 2250 includes a cable receiving hole formed at a distal end of the cable input hermetically sealed cap 2150 provided in the male body 2110, A screw thread is formed at a predetermined position on the inner circumferential surface and is engaged with the engaging thread portion 2215 formed on the rear outer circumferential surface of the female thread portion 2210.

That is, the female connector 220 seals the contact between the engagement thread 2215 formed on the outer circumferential surface of the female body 2210 and the cable input seal cap 2250 through the seal ring 2230, The end of the cable input hermetically sealed cap 2250 may be sealed through the ring 2230 and the pinch ring 2240 to prevent moisture and dust from being introduced.

When the male connector 210 and the female connector 220 are coupled to each other, the male connector 200 is connected to the female connector 2110 through a circular rubber ring 2112 coupled to the cylindrical terminal cover 2111 of the male connector 2110 The watertight structure can be formed by tightly adhering to the insertion holes 2211 in the first and second passageways 2230 and 2230.

Hereinafter, the detailed configuration of the above-described fuse adapter 250 will be described with reference to FIGS. 11 to 13. FIG.

11 to 13, a fuse adapter 250 applied to a connector according to the present invention is composed of a female body part 2510, a fuse 2520, and a male body part 2530.

The male type body portion 2510 includes a cylindrical terminal cover 2111 provided in the male type body portion 2110 of the male type connector 210 as in the female type female portion 2210 of the female type connector 220 described above. And two protruding plugs 2113 formed on the male body 2110 are fastened or separated and are formed at the ends of the protruding plugs 2113 when fastened, Two coupling members 2513 formed to expose the locking protrusions 2114 and a male body portion 2530 which is attached to a concave groove formed in a circular shape along the outer circumferential surface at a middle portion of the female type body portion 2510, Shaped engagement ring 2516 which is positioned at the front end of the rubber ring 2515 and has a locking projection formed at the distal end thereof, Inserted into the insertion hole 2511 of the female body part 2510, Shaped terminal 2517 which is inserted and connected to the tubular connection terminal 2121 of the connector 210 and a fuse 2520 terminal which is integrally coupled to the needle type terminal 2517 and has a substantially " And a receiving part 2518 which is enclosed and enclosed and each end has an inclined surface 2519 inward to facilitate sliding of the fuse terminal.

The fuse 2520 blocks the overcurrent from flowing continuously to the cable connected to the solar power generation module 200 and transmits the power from the power box or the control box 300 to the solar power generation module 200 through the built- One end of the conductive terminal is inserted into the receiving piece 2518 of the female type body part 2510 and the other end of the conductive type terminal is inserted into the female type body part 2530, .

The male body 2530 has a cylindrical body 2531 having a predetermined length and a hole formed therein to receive the fuse 2520 and a portion of the female body 2510, A cylindrical terminal cover 2532 having a small diameter and extending a predetermined length from the center of the terminal and having a hole formed therein, and a terminal cover 2532 mounted on a circular concave groove formed along the outer circumferential surface of the terminal cover 2532 A circular rubber ring 2533 that exhibits waterproof and dustproof effects when the female connector 220 is coupled with the insertion hole 2211 and a circular rubber ring 2533 which is provided in the direction of the terminal cover 2532 at the end of the body 2531 Shaped protrusion 2535 formed at the distal end of the body 2531 and a protrusion 2535 formed at the distal end of the body 2531 and having a locking projection at the distal end of the female body 2510, A latching part 2536 which is hooked on the piece 2516, A plurality of receiving pieces 2538 which are provided at the rear and are accommodated at the other end of the fuse 2520 and each end is inclined inward to facilitate sliding of the fuse terminals, And a tubular terminal portion 2537 provided in the terminal cover 2532 and connected to the acicular terminal portion 2220 in the female connector 220 described above.

That is, the fuse adapter 250 is connected to the female connector 210 or the female connector 220 connected to the ends of the negative (-) cable 230 and the positive (+) cable 240, Shaped body portion 2530 and the male body portion 2530 when the female body portion 2510 and the male body portion 2530 are coupled to each other, The inner circumferential surface of the circular rubber ring 2515 mounted on the outer circumferential surface of the male body 2530 and the inner circumferential surface of the male body 2530 are tightly adhered in a watertight structure to prevent moisture and dust from entering the male body 2530, It is possible to form a watertight structure through a circular rubber ring 2533 mounted on the outer circumferential surface of the terminal cover 2532 at the time of coupling of the terminal cover 220.

Now, referring to Figs. 14 to 19, the hybrid photovoltaic device according to the present invention will be described in detail.

FIG. 14 is a structural view for explaining the basic concept of the hybrid solar photovoltaic apparatus according to the present invention, FIG. 15 is an embodiment of the switch device of the hybrid photovoltaic apparatus according to the present invention, 17 is a connection diagram of a control unit of the hybrid type solar power generation apparatus according to the present invention, and FIG. 18 is a view of a controller of the hybrid type solar power generation apparatus of FIG. 17 19 is a flowchart of the control operation of the hybrid type solar cell power generation apparatus according to the present invention.

As shown in FIG. 14, the hybrid type solar power generation apparatus to which the present invention belongs comprises at least one solar power generation module 200 or 200-1, which is an aggregate of a plurality of solar cells, mounted on a solar power generation panel, The developed DC power from these is inputted to the control box 300 through the cables 230 and 240 and is charged or DC output to the battery 400 or converted to AC through the inverter 370 and outputted Loses.

In the hybrid solar photovoltaic device of the present invention, as shown in FIG. 14, the solar cell panel cables 230 and 240 may be used as a load cable with different time.

More specifically, the DC power generated from the PV modules 200 and 200-1 is input to the combiner 310 through the cables 230 and 240 and to the terminals of the control box 300 Loses. A more detailed description of each terminal of this portion will be given later with reference to Fig.

The power input to the control box 300 is output to the battery 400 through the output terminal to charge the battery. Meanwhile, when the plurality of battery banks are connected in parallel to each other, the battery terminals are connected to the inverter 370 at the same time to switch to the AC power source and output power to the independent load.

The output of the inverter 370 is switched by the switching device 800 that is the core of the present invention and output to the household power consumption device 700 or to the meter 610 of the commercial power system 600, By reversing the accumulated electric power amount, the commercial electric power consumption amount can be set to (-). However, in the case where the battery is sufficiently charged, and the photovoltaic power generation is impossible due to the continuation of the cloudy day, the switching device 800 outputs the commercial AC power directly to the power consumption device 700. [

After the battery 400 has been sufficiently charged, the power of the battery may be DC output to the load through the cables 230 and 240, or the inverter 370 To be output to the stand-alone load 500 via the switching device 800, or to be output from the switching device 800 to the power consuming device 700. [

Hereinafter, the switching device 800 will be described in detail with reference to FIG.

First, the switching device 800 of the present invention includes an AC input terminal 801 connected to the meter 610 of the commercial power system 600, an AC output terminal 802 connected to the AC power consumption devices 700, A first relay switch 810 of the control box 300 and a second relay switch 820 for switching the output of the inverter to the AC output 802 of the output of the inverter 370, And a sensing signal for sensing the presence or absence of commercial AC power is applied to the control unit of the control box 300. [

19, first, a commercial AC power source from the AC input terminal 801 is sensed to detect the abnormality of the commercial AC power, and the AC power of the battery The battery voltage is sensed at a small signal terminal (303 'in FIG. 17) of the battery 400 in order to sense a charged amount of the battery 400 (S1).

Thereafter, it is determined whether or not there is an abnormality in the commercial AC power source (S2). In the case of an abnormal signal such as a short circuit or a short circuit in the commercial AC power supply, the first relay switch 810 is turned off (S3) 600, and a power supply abnormality is detected (S4).

In most cases, the first relay switch is kept in an ON state (S5), and whether or not the battery is charged with the next battery voltage is checked (S6).

There are various methods for determining whether or not the battery is charged. However, the simplest method is to determine that the battery is charged when 70% of the voltage of the battery is full. If it is determined that the battery voltage is not yet charged, The relay switch 820 is turned off (S7), the battery voltage is prevented from flowing to the commercial power system through the inverter, and conversely, it is determined that the battery is in the charging state, the second relay switch 820 is turned on (S8) Allowing the voltage to flow through the inverter to the utility power system. After that, it is returned and executed again at regular intervals from the beginning (S9).

In this case, when there are a plurality of photovoltaic power generation modules, the three photovoltaic modules 200 and 200-1 are connected in parallel with each other as shown in FIG. 7, so that the reference voltage and the power are matched, The power can be doubled, and more than two solar modules can be connected in series to increase the voltage.

7 and 16, the +/- terminal of the solar cell input terminal 311 of the control box 300 is configured as an opposite type connector, for example, a terminal of the solar cell input terminal 311 (+) Terminal is composed of the male connector 210, the (-) terminal is composed of the female connector 220, and the fuse adapter of the (+) cable 240 is of female type, The fuse adapter of the power supply 230 becomes a male type. This way, even beginners can insert a female connector and a male adapter and simply plug in a male connector and a female adapter to make a connection, and to prevent reverse (+) and (-) terminal connections.

FIG. 16 is an example of a combiner 310, FIG. 16 (a) is a front view of a 4-channel combiner, and FIG. 16 (b) is a plan view.

17 and 18 show an example of the terminal connection and the internal circuit of the control box 300 'when the battery is not built in but connected to an external terminal. 17, the adapters 250 of the +/- cables 240 and 230 of the solar module 200 are respectively connected to the terminals 302 'of the control box 300' Terminals 401 and 402 of the external battery 400 are connected to the terminal 301 'of the control box 300' in the inside of the external battery 400 and are respectively connected to the +/- terminals 401 and 402 of the external battery 400, 402 are also connected to the small signal terminal 303 'at the same time. Thus, the control box 300 'controls this, and displays the present charge amount on the display and determines whether the inverter is output to the outside.

A special point in the internal circuit of the control box 300 'of FIG. 18 is that it does not have a DC-DC converter. In the optimum embodiment of the present invention, the DC-DC converter also complicates the device and is the biggest obstacle to miniaturization The number of the solar power generation modules 200 to 200-1 is adjusted so that the generation voltage of the solar power generation module 200 and the voltage of the battery coincide with each other. In other words, the number of parallel connection of the photovoltaic modules 200 to 200-1 is controlled. Since it is only possible to combine the male connector and the female connector in FIG. 7 as described above, that is, the power generating area of the solar power generating modules 200 to 200-1 can be controlled, This is possible because the generation voltage can be adjusted. For example, assuming that one panel in FIG. 15 has a capacity of 12V, if the battery is for 24V, two panels of FIG. 15 may be connected in parallel, and a series connection may be appropriately connected considering output power. For reference, the AD8214 and its peripheral devices are intended to prevent overcharging. The ICM7556 and its peripheral devices are timers for programming into a charge mode during the day and a discharge mode during the night. The LT3010-5 is a linear regulator and the LM3914 is a battery voltage And is displayed on the display.

Now, description will be made of the operation and effect of the present invention. When the battery is charged to a predetermined reference or more while the battery 400 is charged with the developed DC power from the solar power generation module 200, And supplies AC power to the AC power consuming device 700 that uses the commercial power of the general household by switching through the switch device and supplies AC power to the AC power consuming device 500. [ The surplus electric power remaining in the electric power supply system 700 is automatically supplied back to KEPCO through the commercial electric power system 600 to help solve the electric power shortage of the entire country. do.

15, when the second relay switch 820 is off and the first relay switch 810 is on, the commercial AC power of the KEPCO is supplied to the AC power consumption appliance 700 of the home, The power generated by the module 200 charges the battery or supplies power to the dedicated stand-alone load 500 only.

However, when the battery 400 is charged to the reference value or higher, the surplus electric power has been consumed in the past (or an expensive battery having a large charging capacity has to be purchased more than necessary) The second relay switch 820 of the second relay switch 820 is turned on to supply surplus electric power to the AC power consuming device 700 connected to the commercial AC power source. By turning the meter backwards, it is possible to minimize the power consumption of the AC power source, and in some cases, it is possible to increase the profit by switching power to KEPCO.

In addition, the photovoltaic power generation module, the control box 300, and other modules of the present invention can be easily assembled and disassembled by using dedicated jacks. In particular, the solar power generation module and the control box 300 can be assembled and disassembled easily, .

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Of course.

200: solar power module 201: first cable
202: second cable 203: solar cell
205: Reverse current protector 210: male connector
220: Female connector 230: Negative (-) cable
233: third cable 235: shunter
240: Plus (+) cable 250: Fuse adapter
300: Control Box 310: Combiner
370: Inverter
400: Battery 500: Stand-alone load
600: commercial power grid 610: meter
700: AC power consumption equipment
800: Switch device 801: AC input terminal
802: AC output terminal 810: first relay switch
820: second relay switch

Claims (6)

At least one photovoltaic module (200, 200-1);
A battery (400) charged by receiving generated DC power from the at least one solar photovoltaic module;
An inverter 370 inverting the power of the battery 400 to output AC power to the outside;
A switching device for switching the output of the inverter 370 to supply AC power to the AC power consuming device 700 consuming the commercial AC power or switching the supply of the surplus power back to the commercial power system 600 (800); And
A control box (300) for charging the battery with the generated DC power from the at least one solar photovoltaic module, controlling the switching device, and outputting the power to the outside and feeding back to the commercial power system;
/ RTI >
The +/- terminals between the fuse adapter 250 at the ends of the cables 230 and 240 of the at least one solar power module and the solar cell input terminal 311 of the control box 300 are respectively configured as opposite connectors The +/- terminal between the solar cell input terminal 311 of the control box 300 and the fuse adapter itself at the end of the +/- cables 240 and 230 of each photovoltaic power generation module Each of which is composed of an opposite connector,
A first cable 201 and a second cable 202 respectively extended to one end and the other end of a reverse current protection unit 205 installed on each of the at least one solar photovoltaic module; And
A first male connector 210 at an end of the first cable 201 and a first female connector 220 at an end of the second cable 202;
Further comprising:
The second female connector 220 and the second male connector 210 coupled to the first male connector 210 and the first female connector 220 are respectively provided at one ends of the +/- cables 240 and 230, And the fuse adapters 250 coupled to the male and female connectors of the solar cell input terminal 311 of the control box 300 are connected to the other end of the +/- cables 240 and 230, Hybrid solar power generation device. delete The method according to claim 1,
The solar power generation module 200 has a plurality of solar cells arranged on a light thin plate and each solar cell is connected in series and in parallel and finally connected to the cables 230 and 240 through male and female connectors,
Wherein the control box (300) also has a male and female connector coupled to the fuse adapter (250). The apparatus of claim 1, wherein the switching device (800)
An AC input terminal 801 connected to the commercial power system 600,
An AC output terminal 802 connected to the AC power consumption device 700,
A first relay switch 810 located between the AC input terminal 801 and the AC output terminal 802,
And a second relay switch (820) positioned between the inverter (370) and the AC output terminal (802). delete The method according to claim 1,
The fuse adapter 250 is detachably connected to the third male connector 210 or the third female connector 220 at the other ends of the +/- cables 240 and 230 to block overcurrent and reverse current, Wherein the solar cell is a solar cell.

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