Intelligent battery information transmission system

Abstract

The intelligent battery information transmission system comprises a battery compartment, an EMS energy management cabinet and a user background, and a high-voltage battery chamber, a low-voltage control chamber and an EMS on-site acquisition cabinet are arranged in the battery compartment; a second-level BMS high-voltage box in the high-voltage battery chamber enables the A-network light conversion module to communicate with a B-network light conversion module in the low-voltage control chamber, and the B-network light conversion module communicates with a user background through an industrial-level network switch, a third-level BMS display control screen, an Ethernet switch, a first fiber fusion box and a second fiber fusion box in sequence. According to the intelligent battery information transmission system of the utility model, battery cluster information transmission between a high-voltage side and a low-voltage side is realized by using the A-network light conversion module and the B-network light conversion module, and electrical insulation isolation is realized; the long-distance transmission of battery cluster information is realized by using the first and second fusion fibers; and the background host displays and manages and controls the information of the battery pack in real time, so that the healthy working state of the battery cluster is ensured, the working performance is efficient, and the product quality and reliability are improved.

Description

Technical Field

[0001] The utility model relates to an information transmission system, and more specifically, to an intelligent battery information transmission system applied to energy storage devices. Background Art

[0002] Today's energy storage encourages the use of distributed energy storage facilities such as uninterruptible power supplies, electric vehicles, and user-side energy storage, relying on technologies such as big data, cloud computing, artificial intelligence, and blockchain, combined with comprehensive innovation of systems and mechanisms, to explore a variety of business models such as smart energy and virtual power plants. Energy storage is an emerging industry that occupies most of the market space with its rapid development.

[0003] The energy storage system is a complex system, which includes battery energy storage technology, battery management system (hereinafter referred to as BMS), bidirectional power conversion equipment (hereinafter referred to as PCS), energy management system (hereinafter referred to as EMS), and control systems such as fire protection, air conditioning, and video surveillance as core main equipment. Among them, battery energy storage technology is to integrate and package single battery cells into PACK (battery cluster or battery pack) in series and parallel form, and then connect multiple PACKs in series to form a single battery cluster, and then connect multiple PACKs in parallel to form a large energy storage battery compartment. A single energy storage battery compartment contains tens of thousands of cells.

[0004] One of the key technologies is how to transmit the cell voltage, current, average temperature, equilibrium status, fault and other information collected by BMS to the user's backend in a timely and effective manner. Summary of the invention

[0005] In order to overcome the disadvantages of the above technical problems, the utility model provides an intelligent battery information transmission system.

[0006] The intelligent battery information transmission system of the utility model comprises a battery compartment, an EMS energy management cabinet and a user background, wherein a high-voltage battery room, a low-voltage control room and an EMS on-site collection cabinet are arranged in the battery compartment; the characteristic is that a secondary BMS high-voltage box for managing the battery cluster is arranged in the high-voltage battery room, an A network light conversion module is arranged in the secondary BMS high-voltage box, a B network light conversion module, an industrial-grade network switch and a tertiary BMS display and control screen are arranged in the low-voltage control room, an Ethernet switch and a first fiber splicing box are arranged in the EMS on-site collection cabinet, and a second fiber splicing box is arranged in the EMS energy management cabinet;

[0007] The secondary BMS high-voltage box is connected to the network port on the A network optical conversion module via a network cable, the optical fiber port on the A network optical conversion module is connected to the optical fiber port on the B network optical conversion module via a fiber optic jumper, the network port of the B network optical conversion module is connected to the network port on the industrial-grade network switch via a network cable, the industrial-grade network switch is connected to the third-level BMS display and control screen via a network cable, and the third-level BMS display and control screen is connected to the Ethernet switch via a network cable to realize the transmission of the battery cluster information collected by the secondary BMS high-voltage box to the low-voltage control room and the EMS on-site collection cabinet; the Ethernet switch is connected to the first fiber splicing box via a fiber optic jumper, and the first fiber splicing box is connected to the second fiber splicing box via an optical cable to realize the long-distance transmission of the collected battery cluster information from the EMS on-site collection cabinet to the EMS energy management cabinet; the EMS energy management cabinet is connected to the user's backend communication.

[0008] The utility model provides an intelligent battery information transmission system, wherein a switch is arranged in the EMS energy management cabinet, and the user background is composed of a background host and a display. The optical fiber port of the switch is connected to the second fiber splicing box via an optical fiber jumper, and the network port of the switch is connected to the network port on the background host via a network cable, so that the EMS energy management cabinet transmits the received battery cluster information to the background host and displays it on the display.

[0009] The intelligent battery information transmission system of the utility model comprises N secondary BMS high-voltage boxes and N A-network light-converting modules in the high-voltage battery room, N B-network light-converting modules in the low-voltage control room, and N A-network light-converting modules are respectively connected with N B-network light-converting modules via optical fiber jumpers.

[0010] In the intelligent battery information transmission system of the utility model, the optical cable between the first fiber splicing box and the second fiber splicing box adopts an eight-core armored optical cable, and the eight-core armored optical cable runs through the cable trench to connect the first fiber splicing box with the second fiber splicing box.

[0011] The beneficial effects of the utility model are as follows: the intelligent battery information transmission system of the utility model, the battery cluster information collected by the secondary BMS high-voltage box in the high-voltage battery room of the battery compartment is transmitted from the A network to the B network to the light module in the low-voltage control room via the optical fiber jumper, which not only realizes the transmission of the battery cluster information, but also realizes the electrical insulation isolation between the high-voltage side and the low-voltage side, ensuring that the low-voltage control room is not affected by the high voltage; the industrial-grade network switch summarizes the information of the N battery clusters received, and transmits it to the Ethernet switch and the first fiber fusion box in the EMS on-site collection cabinet via the three-level BMS display and control screen, and the first fiber fusion box The fiber box transmits the battery cluster information to the second fiber fusion box in the remote EMS energy management cabinet via the optical cable, realizing the long-distance transmission of the battery cluster information; finally, the switch in the EMS energy management cabinet uploads the battery cluster information to the background host, and the background host displays and manages the battery group information (such as total battery voltage, total current, average temperature, SOC, charge and discharge current and power, battery temperature, balance status, fault and alarm information, historical charge and discharge power, historical charge and discharge) in real time, which is conducive to ensuring the healthy working status and efficient working performance of the battery cluster, and improving product quality and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the BMS information transmission connection of the medium and high voltage battery room of the utility model;

[0013] Figure 2 This is a schematic diagram of BMS information transmission connection in the medium and low voltage control room of the utility model;

[0014] Figure 3 It is a schematic diagram of the BMS information transmission connection from the EMS local data collection cabinet to the EMS energy management cabinet and the user background in the utility model.

[0015] In the figure: 1 secondary BMS high-voltage box, 2 A network to optical module, 3 B network to optical module, 4 industrial-grade network switch, 5 third-level BMS display and control screen, 6 Ethernet switch, 7 first fiber splicing box, 8 second fiber splicing box, 9 switch, 10 background host, 11 display; 12 high-voltage battery room, 13 low-voltage control room, 14 EMS on-site collection cabinet, 15 EMS energy management cabinet, 16 user background, 17 network cable, 18 fiber optic jumper. DETAILED DESCRIPTION

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0017] like Figure 1 , Figure 2 and Figure 3As shown, the schematic diagram of the high-voltage battery room, low-voltage control room and BMS information transmission connection from the EMS local data collection cabinet to the EMS energy management cabinet and the user background of the utility model is respectively given. It is provided with a battery compartment, an EMS energy management cabinet 15 and a user background 16. The EMS energy management cabinet 15 and the user background 16 are arranged nearby, and the EMS energy management cabinet 15 is arranged at a distance relative to the battery compartment. The battery compartment is provided with a high-voltage battery room 12, a low-voltage control room 13 and an EMS local data collection cabinet 14. N secondary BMS high-voltage boxes 1 are arranged in the high-voltage battery room 12, and each secondary BMS high-voltage box 1 is provided with an A network to optical module 2; the low-voltage control room 13 is provided with an industrial-grade network switch 4, a three-level BMS display and control screen 5 and N B network to optical modules 3.

[0018] The EMS on-site data collection cabinet 14 is provided with an Ethernet switch 6 and a first splicing box 7 , the EMS energy management cabinet 15 is provided with a second splicing box 8 and a switch 9 , and the user background 16 is composed of a background host 10 and a display 11 .

[0019] The secondary BMS high-voltage box 1 is connected to the network port on the A network conversion module 2 via the network cable 17, and the optical fiber port on the A network conversion module 2 is connected to the optical fiber port on the B network conversion module 3 via the optical fiber jumper 18. The network port on the B network conversion module 3 is connected to the network port on the industrial-grade network switch 4 via the network cable, and the network port on the industrial-grade network switch 4 is connected to the network port on the third-level BMS display and control screen 5 via the network cable. The network port on the third-level BMS display and control screen 5 is connected to the network port on the Ethernet switch 6 via the network cable, and the optical fiber port on the Ethernet switch 6 is connected to the first fiber splicing box 7 via the optical fiber jumper, and the first fiber splicing box 7 is connected to the second fiber splicing box 8 via the armored optical cable. The second fiber splicing box 8 is connected to the switch 9 via the optical fiber jumper, and the switch 9 is connected to the background host 10 via the network cable.

[0020] The specific transmission method of BMS information (battery cluster information) is as follows:

[0021] Each battery cluster is equipped with a pair of A network light-converting module 2 and B network light-converting module 3. A network light-converting module 2 is placed inside the secondary BMS high-voltage box 1 in the high-voltage battery room. The clustered BMS information collected in the secondary BMS high-voltage box 1 is transmitted to A network light-converting module 2 via a network cable.

[0022] The B network-to-optical module 3 is in the low-voltage control room, and the A network-to-optical module 2 in the high-voltage battery room can transmit the information of the network-to-optical module A to the B network-to-optical module 3 in the low-voltage control room through the optical fiber jumper, and can also effectively isolate the high and low voltages for insulation. Multiple B network-to-optical modules 3 in the low-voltage control room are aggregated to the industrial-grade network switch 4 through multiple network cables, and the industrial-grade network switch 4 finally aggregates and transmits the information to the three-level BMS display and control screen 5 through the network cable.

[0023] The third-level BMS display and control screen 5 is transmitted to the Ethernet switch 6 through a Category 5 shielded network cable. The Ethernet switch 6 is located in the local EMS on-site collection cabinet of the battery compartment. The Ethernet switch 6 transmits to the fiber splicing box 7 in the EMS on-site collection cabinet through the optical fiber jumper. The fiber splicing box 7 in the EMS on-site collection cabinet uses armored optical cables to pass through the cable trench to the distant splicing box 8, which is located in the EMS energy management cabinet placed in the background.

[0024] The switch 9 placed in the EMS energy management cabinet at the user's backstage summarizes the total voltage, total current, and average temperature information of all batteries. The switch 9 to the user's backstage host 10 can conveniently and quickly transmit all battery information in the battery compartment to the main control system in the backstage control room through the network cable. The end user can conveniently and intuitively remotely observe, judge, and process all battery information in the battery compartment through the display 11.

[0025] It can be seen that the intelligent battery information transmission system of the utility model can accurately realize the battery management function by accurately transmitting BMS information to the background and performing real-time monitoring and control, and accurately control multiple data such as battery total voltage, total current, average temperature, SOC, charge and discharge current and power, battery temperature, balance state, fault and alarm information, historical charge and discharge power, and historical charge and discharge power, which is beneficial to ensure the healthy working state of the battery and efficient working performance, prevent faults caused by the battery, and improve product quality and reliability.

Claims

1. An intelligent battery information transmission system, comprising a battery compartment, an EMS energy management cabinet (15) and a user backend (16), wherein the battery compartment is provided with a high-voltage battery room (12), a low-voltage control room (13) and an EMS on-site collection cabinet (14); characterized in that: The high-voltage battery room is provided with a secondary BMS high-voltage box (1) for managing the battery cluster, the secondary BMS high-voltage box is provided with an A network optical conversion module (2), the low-voltage control room is provided with a B network optical conversion module (3), an industrial-grade network switch (4) and a tertiary BMS display and control screen (5), the EMS on-site data collection cabinet is provided with an Ethernet switch (6) and a first fiber splicing box (7), and the EMS energy management cabinet is provided with a second fiber splicing box (8); The secondary BMS high-voltage box is connected to the network port on the A network optical conversion module via a network cable (17), the optical fiber port on the A network optical conversion module is connected to the optical fiber port on the B network optical conversion module via an optical fiber jumper (18), the network port of the B network optical conversion module is connected to the network port on the industrial-grade network switch via a network cable, the industrial-grade network switch is connected to the third-level BMS display and control screen via a network cable, and the third-level BMS display and control screen is connected to the Ethernet switch via a network cable, so as to realize the transmission of the battery cluster information collected by the secondary BMS high-voltage box to the low-voltage control room and the EMS on-site collection cabinet; The Ethernet switch is connected to the first splicing box via an optical fiber jumper, and the first splicing box is connected to the second splicing box via an optical cable to realize the long-distance transmission of the collected battery cluster information from the EMS on-site collection cabinet to the EMS energy management cabinet; the EMS energy management cabinet is connected to the user's backend communication.

2. The intelligent battery information transmission system according to claim 1, characterized in that: The EMS energy management cabinet (15) is provided with a switch (9), the user backend (16) is composed of a backend host (10) and a display (11), the optical fiber port of the switch (9) is connected to the second fiber splicing box (8) via an optical fiber jumper, and the network port of the switch is connected to the network port on the backend host (10) via a network cable, so that the EMS energy management cabinet transmits the received battery cluster information to the backend host and displays it on the display.

3. The intelligent battery information transmission system according to claim 1 or 2, characterized in that: The number of secondary BMS high-voltage boxes (1) and A-network light-converting modules (2) in the high-voltage battery room (12) is N, the number of B-network light-converting modules in the low-voltage control room (13) is N, and the N A-network light-converting modules are respectively connected to the N B-network light-converting modules via optical fiber jumpers.

4. The intelligent battery information transmission system according to claim 1 or 2, characterized in that: The optical cable between the first fiber splicing box (7) and the second fiber splicing box (8) is an eight-core armored optical cable, which runs through a cable trench to connect the first fiber splicing box with the second fiber splicing box.

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