A commercial and industrial storage system based on PLC communication

Abstract

This utility model discloses an industrial and commercial energy storage system based on PLC communication, including a power supply module. At least one PLC master node module and multiple PLC slave node modules are connected to the power supply module. The PLC master node module is connected to an EMS system via UART and GPIO, with the GPIO serving as an emergency response port. Multiple functional modules are connected to each of the multiple PLC slave node modules. A coupling transformer is installed between the PLC master node module and the multiple PLC slave modules and the power line to establish a communication channel. By utilizing existing power cables as the communication medium, this completely changes the traditional "one module, one cabling" model of energy storage systems, drastically reducing the number of communication cables within industrial and commercial energy storage equipment and significantly shortening cabling time.

Description

Technical Field

[0001] This utility model relates to the field of energy storage communication technology, specifically to an industrial and commercial energy storage system based on PLC communication. Background Technology

[0002] Commercial and industrial energy storage cabinets and large-scale containerized energy storage systems typically integrate more than ten core functional modules, including an EMS (Energy Management System), a BMS (Battery Management System), a PCS (Power Conversion System), a cooling system, and a fire protection system. These modules need to interact with each other through different hardware protocols. For example... Figure 5 As shown, the communication protocols of each module are heterogeneous, requiring different types of cables to be laid out accordingly, resulting in a messy and tangled wiring harness inside the equipment. In the traditional wiring structure, the communication interfaces alone include multiple types such as LAN, 485, and CAN. The wiring time accounts for more than 40% of the total system assembly time. Moreover, the traditional wiring method requires independent laying of communication cables for each module, resulting in dozens or even hundreds of cables in a single system.

[0003] PLC (Power Line Communication) refers to a local area communication technology that uses a wire mesh for communication and data transmission. It features the advantages of utilizing existing wires, requiring no additional wiring, unobstructed passage through walls and walls, ease of implementation and maintenance, and stable and reliable communication, providing a highly effective connection and communication method for IoT smart devices.

[0004] Therefore, there is an urgent need for a PLC communication solution optimized for the characteristics of industrial and commercial storage equipment to solve the systemic defects of traditional wiring mode. To this end, an industrial and commercial storage system based on PLC communication is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide an industrial and commercial storage system based on PLC communication to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an industrial and commercial storage system based on PLC communication, including a power supply module, wherein at least one PLC master node module and multiple PLC slave node modules are connected to the power supply module;

[0007] The PLC master node module is connected to the EMS system via UART and GPIO, and the GPIO serves as an emergency response port.

[0008] Each of the PLC slave node modules is connected to a corresponding number of functional modules;

[0009] The PLC master node module and multiple PLC slave node modules are connected to the power line by coupling transformers to establish a communication channel with the power line.

[0010] Preferably, the functional modules include a BMS system, a PCS system, a cooling system, a fire protection system, a display system, an energy metering system, and a monitoring system.

[0011] Preferably, both the PLC master node module and the PLC slave node module are based on OFDM orthogonal multicarrier technology, support the IEEE1901.1 PLC standard, have a communication frequency range of 2 to 12 MHz, a default operating frequency of 2.4 to 5.7 MHz, and a communication rate greater than 120 kbps and not exceeding 1.2 Mbps.

[0012] Preferably, the PLC slave node module and the functional module communicate via at least one hardware protocol selected from UART, CAN, and GPIO.

[0013] Preferably, the EMS system is connected to a 4G module via UART, and the EMS system is connected to a remote communication module via the Internet or CAN.

[0014] Preferably, the PLC master node module and PLC slave node module are embedded with PLC Mesh network technology, which supports dynamic and adaptive multi-node MESH networking and real-time communication, and supports more than 512 slave nodes.

[0015] Compared with the existing technology, the beneficial effects of this utility model are: by using existing power cables as communication medium, the traditional energy storage system’s “one module, one wiring” model is completely changed, the number of communication cables in industrial and commercial energy storage equipment is greatly reduced, and the wiring time is significantly shortened. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the system of this utility model;

[0017] Figure 2 This is a system schematic diagram of the main node of this utility model;

[0018] Figure 3 This is a schematic diagram of the system of the slave node of this utility model;

[0019] Figure 4 A schematic diagram of the node network for PLC module applications;

[0020] Figure 5 This is a schematic diagram of existing technology. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0022] Please see Figure 1-4This utility model provides a technical solution: an industrial and commercial storage system based on PLC communication, including a power supply module, on which at least one PLC master node module and multiple PLC slave node modules are connected;

[0023] like Figure 1 and 2 As shown: The PLC master node module is connected to the EMS system via UART and GPIO, with GPIO serving as the emergency response port. The EMS system is connected to a 4G module via UART, and the EMS system is connected to a remote communication module via the Internet or CAN. The remote communication module and the 4G module are used for external communication applications.

[0024] like Figure 1 and Figure 3 As shown: Multiple PLC slave node modules are each connected to multiple functional modules. Communication between the PLC slave node modules and the functional modules occurs via at least one hardware protocol selected from UART, CAN, and GPIO. The functional modules include a BMS system, a PCS system, a cooling system, a fire suppression system, a display system, an energy metering system, and a monitoring system.

[0025] Some high-power functional modules (such as PCS systems, cooling systems, etc.) have their own auxiliary power supply, which does not affect the connection of the communication system. For high-power modules such as PCS systems and cooling systems, their own auxiliary power supply system is electrically isolated from the main power supply system, but the communication channel is still connected to the main power line carrier network through a coupling transformer to ensure that the operation of high-power equipment does not interfere with the communication signal.

[0026] like Figure 2 and Figure 3 As shown: A coupling transformer is installed between the PLC master node module and multiple PLC slave node modules and the power line to establish a communication channel with the power line.

[0027] Both the PLC master node module and the PLC slave node module are based on OFDM orthogonal multicarrier technology, support the IEEE1901.1 PLC standard, have a communication frequency range of 2 to 12 MHz, a default operating frequency range of 2.4 to 5.7 MHz, and a communication rate greater than 120 kbps and not exceeding 1.2 Mbps.

[0028] The PLC master node module and PLC slave node module are embedded with PLC Mesh network technology, which supports dynamic and adaptive multi-node MESH networking and real-time communication, and supports more than 512 slave nodes.

[0029] Working principle:

[0030] The PLC master node module and the EMS (Energy Management System) communicate with each other via UART (Universal Asynchronous Receiver / Transmitter) and use GPIO (General Purpose Input / Output) ports as an emergency response channel to ensure the real-time transmission of critical commands.

[0031] The PLC slave node module connects to functional modules such as BMS (Battery Management System), PCS (Power Supply System), cooling system, and fire protection system, and adapts to the communication needs of different modules through hardware protocols such as UART, CAN, and GPIO.

[0032] As a core component of power line communication, the coupling transformer establishes a high-frequency signal coupling channel between the master / slave node and the power line, enabling data signals to be superimposed on the power line for transmission.

[0033] Each functional module (such as battery pack, fire protection system) sends status data (voltage, temperature, fault signal, etc.) to the PLC slave node through the interface via the slave node. The slave node modulates the data into a power line carrier signal and injects it into the power line through the coupling transformer. The master node decouples the signal from the power line and transmits it to the EMS system.

[0034] The EMS system modulates control commands (such as PCS start / stop and cooling system speed adjustment) into power line carrier signals through the master node, which are then transmitted to the corresponding slave nodes via the power lines. After decoupling, the slave nodes send the signals to the functional modules for execution through the interface.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An industrial and commercial storage system based on PLC communication, comprising a power supply module, characterized in that: The power module is connected to at least one PLC master node module and multiple PLC slave node modules. The PLC master node module is connected to the EMS system via UART and GPIO, and the GPIO serves as an emergency response port. Each of the PLC slave node modules is connected to a corresponding number of functional modules; The PLC master node module and multiple PLC slave node modules are connected to the power line by coupling transformers to establish a communication channel with the power line.

2. The industrial and commercial storage system based on PLC communication according to claim 1, characterized in that: The functional modules include a BMS system, a PCS system, a cooling system, a fire protection system, a display system, an energy metering system, and a monitoring system.

3. The industrial and commercial storage system based on PLC communication according to claim 1, characterized in that: Both the PLC master node module and the PLC slave node module are based on OFDM orthogonal multicarrier technology, support the IEEE1901.1 PLC standard, have a communication frequency range of 2 to 12 MHz, a default operating frequency range of 2.4 to 5.7 MHz, and a communication rate greater than 120 kbps and not exceeding 1.2 Mbps.

4. The industrial and commercial storage system based on PLC communication as described in claim 1, characterized in that: The PLC slave node module and the functional module communicate with each other through at least one hardware protocol selected from UART, CAN, and GPIO.

5. The industrial and commercial storage system based on PLC communication according to claim 1, characterized in that: The EMS system is connected to a 4G module via UART, and the EMS system is connected to a remote communication module via the Internet or CAN.

6. The industrial and commercial storage system based on PLC communication according to claim 1, characterized in that: The PLC master node module and PLC slave node module are embedded with PLC Mesh network technology, which supports dynamic and adaptive multi-node MESH networking and real-time communication, and supports more than 512 slave nodes.

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