TWI788063B - Solar energy protection system - Google Patents

Abstract

The invention discloses a Solar Energy Protection System which comprises a solar panel, a handheld or fixed wireless device, a wireless router, a wireless base station, a cloud server and computer equipment. A solar panel which comprises a solar energy module and wireless control protection module. Solar modules convert solar energy into electricity provided power source to the wireless control protection module. Electric energy is controlled by the wireless control protection module. Electric energy is transmitted to the positive and negative connection terminals (including cable) of the solar panel through the wireless control protection module. Connect solar panels in series to the required power conditions by connecting terminals (including cables). The solar panels connected in series supply enough power to the inverter and then input to the power system and complete the transmission of solar power. A short-circuit accident occurs in any part of the connecting cable. The wireless control protection module can immediately cut off the solar power to achieve the function of protecting the solar system. Handheld or fixed wireless devices can be used in the event of a fire in the external environment of the solar system. Solar Energy Protection System is through the wireless control protection module to immediately cut off each piece of solar power to achieve the function of immediately protecting firefighters.

Description

solar protection system

The present invention relates to a solar protection system.

Figure 1 is a schematic diagram of a prior art solar system. As shown in Figure 1, the solar panel (1) contains a solar module (12) that can output electric energy. The solar system is composed of multiple solar panels (1) connected in series. The multiple solar panels (1) pass through the positive connector ( Including cables) (13) and negative connectors (including cables) (14) are connected in series to the inverter (2); the inverter (2) receives DC voltage from multiple solar panels (1), and It is converted into an AC voltage and output to the power system AC (3); the length of the positive and negative cables on the solar panel (1) is about 1 meter long, and the length of the serial connection is about 2 meters. The solar panel (1) is connected in series The length of the cable to the inverter (2) is as high as tens of meters. The solar energy system is composed of multiple sets of solar panels connected in series and multiple sets of inverters (2). Therefore, the number of cables is as high as dozens, and the cables pass high voltage , high current, high temperature and long-term use or because of animal bites lead to skin-breaking short-circuit burning, as long as the solar module (12) continues to provide short-circuit current under sunlight, the short-circuit burning continues, and the DC current is not easy to break the arc. Dangerous, leading to burning until all the cables are burnt out, even burning to the original building, the solar system of the previous technology has no improvement function; in addition, the function of the solar system is normal, but the original building is on fire due to various natural disasters and man-made disasters. At this time, the firefighters Arriving at the scene, the voltage of the building where the solar system is operating is as high as 1000 volts. Firefighters are in danger of being electrocuted and disaster relief is difficult. The solar system of the prior art has no improvement function.

Therefore, the present invention is aimed at the above-mentioned shortcoming, proposes a kind of solar protection system, In order to solve the problems arising from conventional knowledge.

The invention provides a solar protection system, which can monitor the voltage and current generated by the solar panel (1) at any time, and wirelessly control the protection module (11) when the voltage and current generated by the solar panel (1) are abnormal. Prevent the positive and negative connection lines between solar panels from generating voltage to avoid disasters, and also control the power output of solar panels (1) through handheld or fixed wireless devices to protect the safety of solar systems and firefighters .

In one embodiment of the present invention, a solar protection system is provided, which includes at least one solar panel, at least one handheld or fixed wireless device, at least one wireless router, at least one wireless base station, at least one cloud server and computer equipment. Each solar panel includes a solar module and a wireless control protection module. The solar module converts solar energy into electrical energy and provides power to the wireless control protection module. The electrical energy is controlled by the wireless control protection module, and the electrical energy is protected through wireless control. The module is transmitted to the positive and negative connection terminals (including cables) of the solar panel, and the solar panels are connected in series through the connection terminals to meet the required power conditions, so as to provide sufficient power for the inverter and then input to the large power system to complete the power transmission of the solar energy .

In one embodiment of the present invention, the wireless control and protection module includes a majority semiconductor power switch, a current detection resistor, a voltage detection resistor, a voltage divider resistor, a set of three bypass diode strings, a Positive input voltage terminal, a positive output voltage terminal, a negative input voltage terminal, a negative output voltage terminal, a step-down circuit C and its output voltage VCC, a wireless control circuit and its antenna, a data processing circuit, a reset circuit , another step-down circuit D and its output voltage VDD, a short circuit protection circuit, a manual protection protection circuit; the drain of the semiconductor power switch is connected to the negative output voltage terminal and the short-circuit protection circuit, the source is connected to the current detection resistor and the data processing circuit, the gate of the semiconductor power switch is connected to the short-circuit protection circuit and the manual protection circuit, and the current detection The other end of the measuring resistance is then connected to the negative input voltage terminal, the input end of the short-circuit protection circuit and the manual protection circuit are connected to the output end of the reset circuit, the input end of the reset circuit is connected to the output end of the wireless control circuit, and the other input end of the manual protection circuit is connected to the wireless The other output end of the control circuit, the wireless control circuit includes a set of antennas, the wireless control circuit and the data processing circuit are connected by a bus, the data processing circuit is connected to the voltage detection resistor and the voltage dividing resistor, and the other end of the voltage dividing resistor is connected to the positive input The voltage terminal and the positive input voltage terminal are respectively connected to the step-down circuit C and the step-down circuit D, the output voltage VCC of the step-down circuit C is connected to the wireless control circuit and the data processing circuit, and the output voltage VDD of the step-down circuit D is connected to the short circuit protection circuit and manual protection circuit, three bypass diodes are connected in series and parallel to the solar module, the positive connection terminal (including cable) is connected to the positive output voltage terminal, the negative connection terminal (including cable) is connected to the negative output voltage terminal, the above Complete the circuit connection; in terms of functional operation, the short-circuit protection circuit detects the drain of the semiconductor power switch. When the cable is short-circuited, the semiconductor power switch is cut off to protect the solar panel. It can also be manually operated by hand-held or fixed wireless devices. Instructions are given to the wireless control circuit, and then the manual protection circuit is controlled to cut off the semiconductor power switch to protect the solar panel. After the fault problem is eliminated, a hand-held or fixed wireless device is used to issue instructions to the wireless control circuit. The control reset circuit can switch the short circuit protection circuit and The manual protection circuit returns to the normal mode; the data processing circuit receives the signals of the current detection resistor and the voltage detection resistor, and provides a hand-held wireless device that can effectively judge the operation status of the solar system, as the basis for controlling the solar system, and the data is recorded in the cloud server and computer equipment.

In one embodiment of the present invention, the wireless control and protection module includes a step-down circuit C, which is connected to the wireless control circuit and the data processing circuit, and the two circuits communicate through a bus. Therefore the same power supply must be used.

In one embodiment of the present invention, the wireless control protection module includes a step-down circuit D, which is connected to the short circuit protection circuit and the manual protection circuit. The power supply of the circuit needs to be separated to avoid mutual interference leading to functional failure.

In one embodiment of the present invention, when the data processing circuit detects that its own temperature is higher than a preset value, the data processing circuit drives the wireless control circuit to turn off the semiconductor power switch to achieve an automatic protection function.

In one embodiment of the present invention, the wireless control protection module generates a wireless positioning signal for the communication control device to receive.

In one embodiment of the invention, the handheld wireless device is a mobile communication device.

In an embodiment of the present invention, the fixed wireless device is a wireless control button, and the wireless control button includes a protective box, a wireless communicator and an emergency button. The wireless communicator is arranged in the protective box, the wireless communicator is wirelessly connected to the wireless router, and the wireless communicator is used for receiving current and voltage through the wireless router. The emergency button is arranged on the protective box and coupled with the wireless communicator. When the current and voltage are abnormal, the emergency button is pressed to drive the wireless communicator to control the wireless controllers of all solar panels through the wireless router to prevent all power from being transmitted to the positive and negative terminals of each solar panel.

Based on the above, the solar energy protection system uses wireless communication technology to monitor the voltage and current generated by the photovoltaic cells at any time, and when the voltage and current generated by the photovoltaic cells are abnormal, the wireless controller prevents the connection between the positive and negative connection lines between the solar panels. Generate voltage to avoid disasters.

In order to make your review committee members have a further understanding and understanding of the structural features and the achieved effects of the present invention, I would like to provide a better embodiment diagram and a detailed description, as follows:

1: Solar panels

2: Inverter

3: Large power system AC

4: Handheld or fixed wireless device

5: Wireless router

6: Cloud server and computer equipment

7: Wireless Base Station

11: Wireless control protection module

1101: Most Semiconductor Power Switches

1102: current detection resistor

1104: voltage detection resistor

1103: Divider resistor

1105: Three bypass diode strings

1106: Positive input voltage terminal

1107: Positive output voltage terminal

1109: Negative input voltage terminal

1108: Negative output voltage terminal

111: step-down circuit C

1111: output voltage VCC

112: wireless control circuit

1121: Antenna

113: Data processing circuit

114: Reset circuit

115: step-down circuit D

1151: output voltage VDD

116: Short circuit protection circuit

117: Manual protection circuit

12: Solar module

13: Positive connection terminal (including cable)

14: Negative connection terminal (including cable)

Figure 1 is a schematic diagram of a prior art solar system.

Fig. 2 is a schematic diagram of an embodiment of a plurality of solar panels and an inverter of the present invention.

Fig. 3 is a schematic diagram of an embodiment of the wireless control and protection module of the present invention.

Embodiments of the present invention will be further explained in conjunction with related figures below. Wherever possible, the same reference numerals have been used throughout the drawings and description to refer to the same or similar components. In the drawings, the shape and thickness may be exaggerated for the sake of simplification and convenient labeling. It should be understood that elements not particularly shown in the drawings or described in the specification are forms known to those skilled in the art. Those skilled in the art can make various changes and modifications according to the content of the present invention.

Certain terms are used in the specification and claims to refer to particular elements. However, those skilled in the art should understand that the same element may be called by different terms. The description and the scope of the patent application do not use the difference in the name as the way to distinguish the components, but the difference in the function of the components as the basis for the distinction. The term "comprising" mentioned in the specification and scope of patent application is an open term, so it should be interpreted as "including but not limited to". In addition, "connection" here includes any direct and indirect connection means. Therefore, if It is described in the text that the first element is coupled to the second element, which means that the first element can be directly connected to the second element through electrical connection or signal connection means such as wireless transmission, optical transmission, or indirectly through other elements or connection means. Electrical or signal connection to the second element.

The following descriptions of "one embodiment" or "an embodiment" refer to at least one specific element, structure or feature associated with one embodiment. Therefore, multiple descriptions of "one embodiment" or "an embodiment" appearing in various places below do not refer to the same embodiment. Furthermore, specific components, structures and features in one or more embodiments may be combined in an appropriate manner.

Unless otherwise specified, some conditional sentences or words, such as "can (can)", "maybe (could)", "maybe (might)", or "may" are usually intended to express that the embodiments of the present case have, However, it may also be interpreted as a feature, element, or step that may not be required. In other embodiments, these features, elements, or steps may not be required.

Figure 2 is a schematic diagram of an embodiment of multiple solar panels and inverters of the present invention. In one embodiment of the present invention, a solar protection system is provided, which includes at least one solar panel (1) or a plurality of solar panels (1), at least one handheld or fixed wireless device (4), at least one wireless router (5), at least one wireless base station (7), at least one cloud server and computer equipment (6), any wireless device It has its antenna (1121); each solar panel (1) includes a solar module (12) and a wireless control protection module (11), and the solar module (12) converts solar energy into electric energy, which is provided to the wireless control protection module Group (11) power supply, the electric energy is controlled by the wireless control protection module (11), and the electric energy is transmitted to the positive and negative connection terminals (13, 14) of the solar panel (1) through the wireless control protection module (11) (including cable), through the positive and negative connection terminals (13, 14) to connect most solar panels (1) in series to the required power conditions, so as to provide sufficient power for the inverter (2) and then input to the large power system AC (3), complete solar power transmission.

The application of the present invention is not limited to a group of solar energy systems, because the wireless device is used as the transmission medium, and can be extended to multiple groups of solar energy systems, limited by the default limit of the transmission quantity of the wireless device.

Figure 3 is a schematic diagram of an embodiment of the wireless control and protection module of the present invention. In one embodiment of the present invention, the wireless control and protection module (11) includes at least one semiconductor power switch (1101), a current detection Resistor (1102), a voltage detection resistor (1104), a voltage divider resistor (1103), a set of three bypass diode strings (1105), a positive input voltage terminal (1106), a positive output voltage terminal (1107), a negative input voltage terminal (1109), a negative output voltage terminal (1108), a step-down circuit C (111) and its output voltage VCC (1111), a wireless control circuit (112) and its antenna ( 1121), a data processing circuit (113), a reset circuit (114), another step-down circuit D (115) and its output voltage VDD (1151), a short circuit protection circuit (116), a manual protection circuit (117 ); the drains of most semiconductor power switches (1101) connected in parallel are connected to the negative output voltage terminal (1108) and the short-circuit protection circuit (116), and the sources are connected to the current detection resistor (1102) and the data processing circuit (113). The parallel gate of the semiconductor power switch (1101) is connected to the short circuit protection circuit (116) and the manual protection circuit (117), and the other end of the current detection resistor (1102) is connected to the negative input voltage terminal (1109), and the short circuit protection circuit ( 116) and the input terminal of the manual protection circuit (117) are connected to the output terminal of the reset circuit (114), the input terminal of the reset circuit (114) is connected to the output terminal of the wireless control circuit (112), and the other input terminal of the manual protection circuit (117) is connected to To the other output end of the wireless control circuit (112), the wireless control circuit (112) includes a group of antennas (1121), the wireless control circuit (112) and the data processing circuit (113) are connected by a bus, and the data processing circuit (113) Connect to the voltage detection resistor (1104) and the voltage divider resistor (1103), the other end of the voltage divider resistor (1103) is connected to the positive input voltage terminal (1106), the positive input voltage terminal (1106) respectively connected to the step-down circuit C (111) and the step-down circuit D (115), the output voltage VCC (1111) of the step-down circuit C (111) is connected to the wireless control circuit (112) and the data processing circuit (113). The output voltage VDD (1151) of the voltage circuit D (115) is connected to the short-circuit protection circuit (116) and the manual protection circuit (117), and three bypass diodes (1105) are connected in series and parallel to the solar module (121), The positive connection terminal (13) (including cable) is connected to the positive output voltage terminal (1107), the negative connection terminal (14) (including cable) is connected to the negative output voltage terminal (1108), and the circuit connection is completed above; in functional operation, The short-circuit protection circuit (116) detects the drains of most semiconductor power switches (1101), and when the cable is short-circuited, it cuts off most of the semiconductor power switches (1101) to protect the solar panel (1). It can also be operated manually, as shown in Figure 2 , using a handheld or fixed wireless device (4) to give instructions to the wireless control circuit (112), and then control the manual protection circuit (117) to cut off most semiconductor power switches (1101) to protect the solar panel (1), and the fault problem has been eliminated Afterwards, give instructions to the wireless control circuit (112) with the handheld or fixed wireless device (4), and the control reset circuit (114) can return the short circuit protection circuit (116) and the manual protection circuit (117) to the normal mode; The processing circuit (113) receives the signals of the current detection resistor (1102) and the voltage detection resistor (1104), transmits them to the wireless control circuit (112), transmits them through the antenna (1121), and provides the hand-held wireless device (4) to effectively determine The operating status of the solar system, especially the real-time transmission of fault signals, is used as the basis for controlling the solar system. The data is recorded in the cloud server and computer equipment (6), and after record analysis, it becomes a solar database and becomes a complete set of solar energy systems. Protection System.

In one embodiment of the present invention, the data processing circuit (113) has a built-in temperature sensing chip. When the temperature of the solar panel (1) is higher than a preset value, such as 85 degrees Celsius, the data processing circuit (113) sends a wireless control The circuit (112) signal controls the manual protection circuit (117) to cut off most semiconductor power switches (1101), stops the power supply of the solar panel (1), and avoids accidental expansion.

In one embodiment of the present invention, the wireless control circuit (112) utilizes its positioning function, The position of the solar panel (1) can be obtained, and the difficulty of searching for the solar panel (1) is reduced.

In one embodiment of the present invention, the step-down circuit C ( 111 ) and the step-down circuit D ( 115 ) need to operate independently.

According to the above embodiment, the solar protection system uses wireless communication technology to monitor the voltage and current generated by the solar panel (1) at any time, and when the voltage and current generated by the solar panel (1) are abnormal, the wireless control circuit (112) prevents The positive and negative connection terminals (13, 14) (including cables) between the solar panels (1) generate voltage to avoid disasters.

The above is only a preferred embodiment of the present invention, and is not used to limit the scope of the present invention. Therefore, all equal changes and modifications are made according to the shape, structure, characteristics and spirit described in the patent scope of the present invention. , should be included in the patent application scope of the present invention.

11: Wireless control protection module

1101: Most Semiconductor Power Switches

1102: current detection resistor

1104: voltage detection resistor

1103: Divider resistor

1105: Three bypass diode strings

1106: Positive input voltage terminal

1107: Positive output voltage terminal

1109: Negative input voltage terminal

1108: Negative output voltage terminal

111: step-down circuit C

1111: output voltage VCC

112: wireless control circuit

1121: Antenna

113: Data processing circuit

114: Reset circuit

115: step-down circuit D

1151: output voltage VDD

116: Short circuit protection circuit

117: Manual protection circuit

Claims (4)

A wireless control protection module: including at least one semiconductor power switch, a current detection resistor, a voltage detection resistor, a voltage divider resistor, a set of three bypass diode strings, a positive input voltage terminal, a positive Output voltage terminal, a negative input voltage terminal, a negative output voltage terminal, a step-down circuit C and its output voltage VCC, a wireless control circuit and its antenna, a data processing circuit, a reset circuit, and another step-down circuit D And its output voltage VDD, a short-circuit protection circuit, and a manual protection circuit; the drains of most semiconductor power switches connected in parallel are connected to the negative output voltage terminal and the short-circuit protection circuit, and the source is connected to the current detection resistor and data processing circuit. The parallel gate of the power switch is connected to the short-circuit protection circuit and the manual protection circuit, the other end of the current detection resistor is connected to the negative input voltage terminal, the input terminal of the short-circuit protection circuit and the manual protection circuit is connected to the output terminal of the reset circuit, and the input terminal of the reset circuit Connect to the output end of the wireless control circuit, the other input end of the manual protection circuit is connected to the other output end of the wireless control circuit, the wireless control circuit includes a set of antennas, the wireless control circuit and the data processing circuit are connected by a bus, and the data processing circuit is connected to The voltage detection resistor and the voltage dividing resistor, the other end of the voltage dividing resistor is connected to the positive input voltage terminal, the positive input voltage terminal is respectively connected to the step-down circuit C and the step-down circuit D, and the output voltage VCC of the step-down circuit C is connected to the wireless control Electric circuit and data processing circuit, the output voltage VDD of step-down circuit D is connected to the short-circuit protection circuit and manual protection circuit, three bypass diodes are connected in series and parallel to the solar module, and the positive connection terminal (including the cable) is connected to the positive output The voltage terminal, the negative connection terminal (including the cable) is connected to the negative output voltage terminal, and the above completes the circuit connection; in terms of functional operation, the short-circuit protection circuit detects the drains of most semiconductor power switches, and when the cable is short-circuited, most semiconductor power switches are cut off In order to protect the solar panel, it is also possible to use a hand-held or fixed wireless device to give instructions to the wireless control circuit through manual operation, and then control the manual protection circuit to cut off most semiconductor power switches to protect the solar panel. After troubleshooting, use a handheld Or the fixed wireless device sends commands to the wireless control circuit, and the control reset circuit can return the short circuit protection circuit and manual protection circuit to normal mode; the data processing circuit receives the current detection resistor and voltage detection resistor signals, and transmits them to the wireless control circuit, Through the antenna transmission, providing a handheld wireless device can effectively judge the operating status of the solar system, especially in the instant transmission of fault signals, as a control of the sun Based on the energy system, the data is recorded in the cloud server and computer equipment, and after the record analysis becomes a solar database, and becomes a complete solar protection system. As described in the wireless control protection module of claim 1, the data processing circuit has a built-in temperature sensing chip. When the temperature of the solar panel is higher than the preset value, such as 85 degrees Celsius, the data processing circuit sends a signal to the wireless control circuit to control the manual operation. The protection circuit cuts off most of the semiconductor power switches, stops the power supply of the solar panel, and avoids accidental expansion. The wireless control circuit as described in the wireless control protection module of claim 1 can obtain the position of the solar panel by using its positioning function, reducing the difficulty of searching for the solar panel. The step-down circuit C and the step-down circuit D described in the wireless control and protection module of claim 1 need to operate independently.

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