Four-fusible switch device
By designing a four-in-one integrated switchgear that combines circuit breaker switching modules and communication control modules, the problem of complex wiring and high cost caused by the variety of inverter models in distributed photovoltaic power generation systems is solved. This enables unified monitoring and control of photovoltaic inverters, simplifies the wiring process, and reduces costs.
Patent Information
- Application Number
- CN202520018767.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-06
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-01-06
AI Technical Summary
In distributed photovoltaic power generation systems, photovoltaic inverters come in various models and lack a unified standard, resulting in complex wiring, numerous devices, high costs, and impacting the stable operation of the power grid.
Design a four-in-one integrated switchgear that integrates a circuit breaker switch module and a communication control module. It connects to a photovoltaic inverter via an interface conversion line to achieve protocol conversion and data communication, supports multiple inverter models, simplifies wiring, and enables power metering and monitoring.
It enables unified monitoring and control of photovoltaic inverters, simplifies the wiring process, reduces construction costs, supports compatibility with multiple inverter models, and ensures stable grid operation.
Smart Images
Figure CN223728638U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to circuit breaker switch technical field, concretely is a four can melt switch device. BACKGROUND
[0002] With the large-scale access of distributed photovoltaic power generation system to power grid, due to the particularity of "cloud comes no light" of photovoltaic power generation, and photovoltaic inverter power output is directly connected to the grid, which brings certain impact on the stable operation of the power grid, in order to ensure the safe and stable operation of the power grid, the power grid company requires effective monitoring of the inventory distributed photovoltaic.
[0003] However, the photovoltaic inverter property right in the distributed photovoltaic power generation system is divided into user management, the inverter manufacturer, model, interface and communication protocol are numerous, lack of unified standard, the interface of different models of photovoltaic inverter cannot be uniformly matched when wiring monitoring, photovoltaic interface converter and photovoltaic protocol converter need to be configured separately, a single circuit breaker switch needs to be connected with photovoltaic protocol converter, photovoltaic interface converter, photovoltaic inverter and inverter communication rod respectively, and the more equipment devices lead to complex field construction wiring and high investment cost. UTILITY MODEL CONTENT
[0004] In order to solve the above problems, the utility model provides a four can melt switch device, including device body and interface conversion line for being connected with photovoltaic inverter, the device body includes circuit breaker switch module and communication control module, the circuit breaker switch module is connected with communication control module, and the communication control module is connected with interface conversion line;The communication control module is internally provided with metering module, protocol conversion module and master control module, and the master control module is connected with metering module and protocol conversion module respectively.
[0005] One end of the interface conversion line is RJ45 connector, and the other end is USB male and female adapter;The USB male and female adapter includes USB male and USB female.
[0006] In the specific embodiment, the outer surface top end of the communication control module is provided with the RJ45 interface connected with the interface conversion line, and the RJ45 interface is connected with the protocol conversion module.
[0007] In order to realize the connection of the device with photovoltaic inverter and transmission line, wiring terminals are arranged on the upper and lower ends of the circuit breaker switch module.
[0008] In order to realize the metering detection of the electric energy data output by the photovoltaic inverter, the wiring terminal at the lower end of the circuit breaker switch module is further provided with a voltage transformer and a current transformer, and the voltage transformer and the current transformer are connected with the communication control module respectively.
[0009] In order to facilitate installation, the circuit breaker switch module and the communication control module are integrated, and the communication control module is located at the left side or the right side of the circuit breaker switch module.
[0010] The top end of the communication control module is also provided with an RS485 interface, which is electrically connected with the protocol conversion module.
[0011] The communication control module is also provided with a wireless communication module, which is electrically connected with the master control module, and the communication control module can communicate with the remote terminal through the wireless communication module, and receive the control instruction of the remote terminal.
[0012] Beneficial effects: the utility model discloses a four can fuse switch device, and the circuit breaker switch module and the communication control module are integrated, which has the advantages of small size, high function integration and the like; the interface conversion line is connected with the photovoltaic inverter, and the communication control module is used for protocol conversion and data communication, so that the output electric energy and the running state of the photovoltaic inverter are measured and monitored; meanwhile, the device is compatible with photovoltaic inverters of various types and protocols through the interface conversion line, which simplifies the field construction wiring, and realizes effective control of the photovoltaic inverter output through the circuit breaker switch module, so that the functions of photovoltaic inverter data acquisition, monitoring and control are realized. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 The structure of the four can fuse switch device Figure 1 ;
[0014] Figure 2 The structure of the four can fuse switch device Figure 2 ;
[0015] Figure 3 The structure diagram of the voltage transformer and the current transformer
[0016] Figure 4 The structure diagram of the interface conversion line
[0017] 1, circuit breaker switch module; 2, communication control module; 3, wiring terminal; 4, RJ45 interface; 5, RS485 interface; 6, current transformer; 7, voltage transformer; 8, RJ45 connector; 9, USB male and female adapter; 901, USB male head; 902, USB female head. DETAILED DESCRIPTION
[0018] Exemplary embodiments of the present disclosure will be described in greater detail below with reference to the accompanying drawings.
[0019] Reference Figures 1-2This embodiment provides a four-in-one integrated switch device, including a device body and an interface conversion line. The device body includes a circuit breaker switch module 1 and a communication control module 2. The circuit breaker switch module 1 and the communication control module 2 are integrated structures. The communication control module 2 is located on the side of the circuit breaker switch body, which facilitates the on-site installation of the four-in-one integrated switch device without affecting normal wiring.
[0020] The circuit breaker switch module 1 has terminals 3 at both ends. The lower terminal 3 is electrically connected to the photovoltaic inverter, and the upper terminal 3 is connected to the transmission line, thereby channeling the electrical energy output from the photovoltaic inverter into the transmission line. The lower terminal 3 of the circuit breaker switch module 1 is also electrically connected to the communication control module 2 via a lead wire. The communication control module 2 draws power from the terminal 3 for operation.
[0021] Simultaneously, the communication control module 2 has an external interface conversion line, which connects to the photovoltaic inverter and is used to transmit the photovoltaic inverter's operating data and control signals. For example... Figure 4 As shown, one end of the interface conversion cable is an RJ45 connector 8, and the other end is a USB male to female adapter 9. The USB male to female adapter 9 includes a USB male connector 901 and a USB female connector 902. The USB male to female adapter 9 can be used to adapt to various models of photovoltaic inverters and can be connected to the inverter communication rod at the same time, which is convenient and fast.
[0022] To enable the identification and reception of data from the photovoltaic inverter, the communication control module 2 is equipped with an RJ45 interface 4 at its top, which is compatible with the interface conversion cable. The communication control module 2 internally includes a protocol conversion module, a metering module, and a main control module. The main control module is electrically connected to both the metering module and the protocol conversion module. The protocol conversion module is electrically connected to the RJ45 interface 4. The protocol conversion module receives communication data from the photovoltaic inverter transmitted via the interface conversion cable, performs communication protocol conversion, and converts it into unified data information for transmission to the main control module, enabling real-time monitoring of the photovoltaic inverter's operating status. The main control module can obtain the electrical energy data output by the photovoltaic inverter through the metering module.
[0023] In order to measure and detect the electrical energy output data of photovoltaic inverters, such as Figure 3 As shown, the lower terminal 3 of the circuit breaker switch module 1 is also equipped with a voltage transformer 7 and a current transformer 6. The voltage transformer 7 and the current transformer 6 are electrically connected to the metering module of the communication control module 2. The voltage transformer 7 and the current transformer 6 detect and obtain the voltage signal and current signal of the photovoltaic inverter input to the terminal 3 through the mutual inductance principle, and transmit the voltage signal and current signal to the metering module for metering processing. The metering module transmits the metered electrical energy data to the main control module.
[0024] In addition, the top end of the communication control module 2 is also provided with an RS485 interface 5, which is electrically connected with the protocol conversion module, and the communication control module 2 is also connected with the on-site electric energy meter or other electric energy equipment through the RS485 interface 5, so as to transmit the electric energy data collected by metering to the electric energy meter for electric energy statistics.
[0025] The communication control module 2 is also provided with a wireless communication module, which is electrically connected with the main control module, and the communication control module 2 can communicate with the remote terminal through the wireless communication module, upload the communication data of the photovoltaic inverter, receive the control instruction of the remote terminal, convert the protocol data of the photovoltaic inverter through the protocol conversion module, and remotely control the photovoltaic inverter.
[0026] The four-fusible switch device can realize automatic overvoltage, overcurrent or short-circuit protection through the circuit breaker switch module 1, and can control the circuit breaker switch module 1 to realize on-off operation through the communication control module 2, so as to realize grid-connected or off-grid operation of the photovoltaic power generation system.
Claims
1. A four-fusible switch device, characterized by, The utility model relates to a kind of photovoltaic inverter interface conversion device, including device body, and the interface conversion line for being connected with photovoltaic inverter, the device body includes circuit breaker switch module (1) and communication control module (2), the circuit breaker switch module (1) is electrically connected with communication control module (2), and communication control module (2) is externally connected interface conversion line. The communication control module (2) is internally provided with a metering module, a protocol conversion module, and a master control module.
2. The four-fusible switch device of claim 1, wherein, The interface conversion line is provided with an RJ45 connector (8) at one end and a USB male-to-female adapter (9) at the other end.
3. The four-fusible switch device of claim 2, wherein, The USB male-to-female adapter (9) includes a USB male connector (901) and a USB female connector (902).
4. The four-fusible switch device of claim 1, wherein, The communication control module (2) is provided with an RJ45 interface (4) at the top end of its outer surface, which is adapted to be connected with the interface conversion line.
5. The four-fusible switch device of claim 4, wherein, The circuit breaker switch module (1) is provided with a terminal (3) at the top and bottom ends, respectively.
6. The quad-fusible switch device of claim 1, wherein, The terminal (3) at the bottom end of the circuit breaker switch module (1) is further provided with a voltage transformer (7) and a current transformer (6), which are electrically connected with the communication control module (2), respectively.
7. The quad-fusible switch device of claim 1, wherein, The circuit breaker switch module (1) and the communication control module (2) are integrated; the communication control module (2) is located on the left side or the right side of the circuit breaker switch module (1).
8. The quad-fusible switch device of claim 1, wherein, The communication control module (2) is further provided with an RS485 interface (5) at the top end, which is electrically connected with the protocol conversion module. The communication control module (2) is further provided with a wireless communication module, which is electrically connected with the master control module.