Solar module fast shutdown system

Abstract

This disclosure provides a rapid shutdown system for a solar module, comprising a main control device, at least one photovoltaic device, and an inverter device. The main control device has a sensor and a processing unit, the processing unit being coupled to the sensor, and includes a power detection unit and a shutdown control unit. The at least one photovoltaic device has a generator and a shutdown device coupled to each other, the shutdown device having a first connection terminal and a second connection terminal, the first connection terminal being coupled to the sensor. The inverter device is coupled to the sensor and the second connection terminal. When the power detection unit detects an abnormality in the power transmitted by the sensor, the power detection unit outputs an abnormality signal to the shutdown control unit, and the shutdown control unit correspondingly outputs a shutdown signal to the shutdown device to control the shutdown device to switch to the off state.

Description

Solar module fast shutdown system Technical Field

[0001] This disclosure relates to a shutdown system, and more particularly to a rapid shutdown system for a solar module. Prior Technology

[0002] When an abnormal situation occurs in the power circuit of a typical solar power generation device, it is usually necessary to execute relevant circuit procedure steps before power can be cut off. This operating mode often cannot achieve immediate and rapid power-off control.

[0003] In existing technical architectures, when multiple power circuits need to perform power on / off functions simultaneously or individually, complex and additional communication control lines are often required to connect the main control unit and each slave device. This traditional wiring method not only increases the complexity of installation and hardware costs, but also falls short in terms of response speed and control efficiency in situations requiring emergency power cut-off (such as energy storage system anomalies or environmental safety requirements), making it difficult to meet the stringent standards of high security and rapid response in modern power systems. Summary of the Invention

[0004] The main purpose of this disclosure is to solve the problem of insufficient response speed and control efficiency in existing power supply circuits.

[0005] To achieve the above objectives, this disclosure provides an embodiment of a solar module fast shutdown system, comprising a main control device, at least one photovoltaic device, and an inverter device. The main control device has a sensor and a processing unit, the processing unit being coupled to the sensor and including a power detection unit and a shutdown control unit; the at least one photovoltaic device has a generator and a shutdown device coupled to each other, the shutdown device having a first connection terminal and a second connection terminal, the first connection terminal being coupled to the sensor; the inverter device is coupled to the sensor and the second connection terminal; wherein, when the power detection unit detects an abnormality in the power transmitted by the sensor, the power detection unit outputs an abnormality signal to the shutdown control unit, and the shutdown control unit correspondingly outputs a shutdown signal to the shutdown device to control the shutdown device to switch to the off state.

[0006] Therefore, this disclosure can detect power anomalies or receive emergency signals through the main control device, and drive the shutdown device to perform shutdown action within a certain time (about 10 seconds), thereby effectively avoiding the risk of continuous power supply during disasters or equipment failures, and ensuring the safety of personnel and equipment. Simple Explanation of the Diagram

[0007] [Figure 1] is a circuit connection diagram of the solar module fast shutdown system of the present disclosure embodiment. [Figure 2] is a block diagram of the solar module fast shutdown system of the present disclosure embodiment. [Figure 3] is a circuit connection diagram of a solar module fast shutdown system according to certain embodiments disclosed herein. [Figure 4] is a block diagram of a solar module fast shutdown system according to certain embodiments disclosed herein. Implementation

[0008] To facilitate the explanation of the central ideas disclosed in the above-mentioned creative content section, specific embodiments are provided below. The various objects in the embodiments are drawn to scale suitable for illustration, rather than to scale with actual components, as will be stated prior.

[0009] Please refer to Figures 1 to 4, which disclose a solar module fast shutdown system 100, comprising a main control device 10, at least one photovoltaic device 20, and an inverter device 30. This disclosure is primarily used in solar-related power generation systems, but is not limited thereto; it can be used in any system involving power generation for related power detection.

[0010] The main control device 10 has a sensor 11 and a processing unit 12. The processing unit 12 is coupled to the sensor 11 and includes a power detection unit 121 and a shutdown control unit 122. The sensor 11 may be a ring-shaped iron core.

[0011] At least one optoelectronic device 20 has a power generating element 21 and a power shut-off element 22 coupled to each other. The power shut-off element 22 has a first connection terminal 221 and a second connection terminal 222, the first connection terminal 221 being coupled to the sensing element 11.

[0012] Inverter 30 is coupled to inductor 11 and second connection terminal 222. Inverter 30 is used to convert the direct current output from photoelectric device 20 into alternating current.

[0013] Please refer to Figures 1 and 2. In this disclosed embodiment, the power generated by the photoelectric device 20 continuously passes through the sensor 11 of the main control device 10 and is output to the inverter 30. When the power detection unit 121 detects an abnormality in the power transmitted by the sensor 11, the power detection unit 121 outputs an abnormality signal to the shutdown control unit 122, and the shutdown control unit 122 outputs a shutdown signal to the shutdown element 22 in response to the abnormality signal, thereby controlling the shutdown element 22 to switch to the off state.

[0014] Referring to Figures 1 and 2, in some embodiments of this disclosure, the main control device 10 includes an emergency stop component 13. The emergency stop component 13 is coupled to the processing component 12 and outputs an emergency signal to the processing component 12, causing the processing component 12 to output the shutdown signal. When monitoring personnel detect an abnormality in power transmission, they can manually control the emergency stop component 13 to switch the shutdown component 22 to the off state, thereby immediately cutting off the power output of this disclosure and performing subsequent troubleshooting.

[0015] Referring to Figures 3 and 4, in some embodiments disclosed herein, an energy storage device 40 is further included, which is coupled to the inverter 30 and the main control device 10. The energy storage device 40 is capable of storing the electricity generated by the photoelectric device 20.

[0016] Referring to Figures 3 and 4, in some embodiments disclosed herein, the energy storage device 40 includes a monitoring unit 41. The monitoring unit 41 is coupled to the inverter 30 and the main control unit 10, and is used to monitor the current state of the energy storage device 40. The monitoring unit 41 has a pre-stored overload current standard range. When the monitoring unit 41 detects that the current value of the energy storage device 40 exceeds the overload current standard range, the monitoring unit 41 outputs an overload signal to the shutdown control unit 122 of the processing unit 12, so that the shutdown control unit 122 of the processing unit 12 outputs the shutdown signal. The overload current standard range is between 30 amperes and 300 amperes.

[0017] Referring to Figures 1 and 3, in some embodiments disclosed herein, the number of photoelectric devices 20 can be multiple, and the shut-off elements 22 of two adjacent photoelectric devices 20 are coupled to each other. Specifically, the second connection terminal 222 of the shut-off element 22 of the first photoelectric device 20 is coupled to the inverter 30, the first connection terminal 221 of the shut-off element 22 of the last photoelectric device 20 is coupled to the sensor 11, and the shut-off elements 22 of the remaining photoelectric devices 20 are connected in series through the first connection terminal 221 and the second connection terminal 222, thus enabling the multiple photoelectric devices 20 to be connected in series to form a photoelectric string 1. Furthermore, there can also be multiple photoelectric strings 1 arranged side-by-side (as shown in Figures 1 and 3), each photoelectric string 1 being coupled to the main control device 10 and the inverter 30, and the main control device 10 being able to simultaneously perform power detection on multiple photoelectric strings 1.

[0018] Please refer to Figures 3 and 4. In some embodiments of this disclosure, a power distribution device 50 is further included, which is coupled to the inverter device 30 and the main control device 10. In this disclosure, the power distribution device 50 is connected to an AC power grid 200 so that the power generated by this disclosure can be output to the AC power grid 200.

[0019] Referring to Figures 2 and 4, in some embodiments disclosed herein, the main control device 10 includes a communication interface 14, which is coupled to the sensor 11 and the processing unit 12 for signal transmission between the sensor 11 and the processing unit 12. The communication interface 14 may be a UART or an RS485 port.

[0020] Therefore, this disclosure has the following advantages:

[0021] 1. This disclosure can detect power abnormalities or receive emergency signals through the main control device 10, and drive the shutdown component 22 to perform a shutdown action within a certain time (about 10 seconds), thereby effectively avoiding the risk of continuous power supply during disasters or equipment failures, and ensuring the safety of personnel and equipment.

[0022] 2. The energy storage device 40 disclosed herein can store the power generated by the photoelectric device 20, so that when the photoelectric device 20 malfunctions, the energy storage device 40 can continuously output the stored power to avoid power supply interruption.

[0023] Although this disclosure is based on a preferred embodiment, those skilled in the art can make various modifications without departing from the spirit and scope of this disclosure. The embodiments described above are merely illustrative and not intended to limit the scope of this disclosure. All modifications or alterations made without departing from the spirit of this disclosure are within the patent scope of this disclosure.

[0024] 100: Solar Module Quick Shutdown System 200: AC power grid 10: Main control device 11: Sensor 12: Processing Items 121: Power Detection Unit 122: Shutdown control unit 13: Emergency Stop Part 14: Communication Interface 20: Optoelectronic devices 21: Generating components 22: Shutdown component 221: First connection end 222: Second connection end 30: Inverter 40: Energy storage device 41: Monitoring Components 50: Power distribution equipment 1: Photovoltaic string

Claims

1. A solar module fast shutdown system, comprising: a main control device having a sensor and a processing unit, the processing unit being coupled to the sensor, the processing unit including a power detection unit and a shutdown control unit; at least one photoelectric device having a power generation element and a shutdown element coupled to each other, the shutdown element having a first connection terminal and a second connection terminal, the first connection terminal being coupled to the sensor; and an inverter device coupled to the sensor and the second connection terminal; wherein... When the power detection unit detects an abnormality in the power transmitted by the sensor, the power detection unit outputs an abnormality signal to the shutdown control unit, and the shutdown control unit outputs a shutdown signal to the shutdown device to control the shutdown device to switch to the off state.

2. The solar module rapid shutdown system as described in claim 1, wherein, The sensing element is a ring-shaped iron core.

3. The solar module rapid shutdown system as described in claim 1, wherein, The main control device includes an emergency stop component coupled to the processing component. The emergency stop component is used to output an emergency signal to the processing component so that the processing component outputs the shutdown signal.

4. The solar module fast shutdown system as described in claim 1 further includes an energy storage device coupled to the inverter and the main control device.

5. The solar module rapid shutdown system as described in claim 4, wherein, The energy storage device includes a monitoring device coupled to the inverter and the main control device, which is used to monitor the current status of the energy storage device.

6. The solar module rapid shutdown system as described in claim 5, wherein, The monitoring device has a pre-stored overload current standard range. When the monitoring device measures that the current value of the energy storage device exceeds the overload current standard range, the monitoring device outputs an overload signal to the processing device, so that the processing device outputs the shutdown signal.

7. The solar module rapid shutdown system as described in claim 1, wherein, The number of the at least one optoelectronic device is multiple, and the shut-off element of two adjacent optoelectronic devices is coupled to each other.

8. The solar module fast shutdown system as described in claim 1 further includes a power distribution device coupled to the inverter and the main control device.

9. The solar module rapid shutdown system as described in claim 1, wherein, The main control device includes a communication interface that is coupled to the sensor and the processor.

10. The solar module rapid shutdown system as described in claim 9, wherein, The communication interface is a UART or RS485 port.

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