CN220874555U - Network communication topology framework of high-voltage cascade energy storage system - Google Patents
Network communication topology framework of high-voltage cascade energy storage system Download PDFInfo
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- CN220874555U CN220874555U CN202322227577.3U CN202322227577U CN220874555U CN 220874555 U CN220874555 U CN 220874555U CN 202322227577 U CN202322227577 U CN 202322227577U CN 220874555 U CN220874555 U CN 220874555U
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- 238000004891 communication Methods 0.000 title claims abstract description 46
- 238000004146 energy storage Methods 0.000 title claims abstract description 34
- 238000006243 chemical reaction Methods 0.000 claims abstract description 42
- 230000003287 optical effect Effects 0.000 claims abstract description 19
- 239000013307 optical fiber Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims description 4
- 238000002955 isolation Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000004378 air conditioning Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
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Abstract
The utility model relates to a network communication topology framework of a high-voltage cascade energy storage system, which comprises a battery management system BMS, an energy management system EMS and battery clusters, wherein each battery cluster is provided with a battery management system main control unit BCMU and a slave control unit BMM, and is characterized in that: the battery management main control unit BCMU is communicated with the battery management system BMS sequentially through the network light conversion module, the optical network conversion module and the first switch, the battery management system main control unit BCMU is connected with the input end of the network light conversion module through the Ethernet port, and the output end of the network light conversion module is connected with the input end of the optical network conversion module. The network communication topology structure not only realizes high-voltage isolation by using the optical fiber, but also solves the problems of channel blockage and high maintenance technical difficulty caused by CAN communication compared with the prior CAN bus communication, and is more beneficial to safely and stably uploading the collected operation information of the battery cluster.
Description
Technical Field
The present utility model relates to a network communication topology, and more particularly, to a network communication topology of a high-voltage cascade energy storage system.
Background
When the battery cluster operation data transmission is carried out, because of the topological structure of the high-voltage cascade energy storage system, if an isolation means is not adopted, serious interference CAN be generated on communication signals, and a CAN communication mode is generally adopted, but the problems of channel blockage and the like CAN occur in CAN communication along with the increase of the system capacity, and meanwhile, the technical difficulty of CAN communication maintenance is high.
Disclosure of Invention
In order to overcome the defects of the technical problems, the utility model provides a network communication topology framework of a high-voltage cascade energy storage system.
The utility model relates to a network communication topology framework of a high-voltage cascade energy storage system, which comprises a battery management system BMS, an energy management system EMS, an energy storage converter main control box and n battery clusters, wherein each battery cluster is provided with a battery management system main control unit BCMU and a battery management system slave control unit BMM for managing the battery clusters, and the battery management system main control unit BCMU is arranged in the high-voltage box; each battery cluster is correspondingly provided with a unit control board; the method is characterized in that: the battery management system main control unit BCMU is communicated with the battery management system BMS sequentially through the network light conversion module, the optical network conversion module and the first switch so as to upload the running information of the battery cluster to the battery management system BMS, and the battery management system main control unit BCMU is provided with a CAN port, an Ethernet port and an RS485 interface; the battery management system main control unit BCMU is communicated with the battery management system slave control unit BMM through a CAN port, is connected with the unit control board through an RS485 interface, is connected with the input end of the network light conversion module through an Ethernet port, the output end of the network light conversion module is connected with the input end of the optical network conversion module, and the output of the optical network conversion module is connected with the communication port of the battery management system BMS through a first switch.
The utility model relates to a network communication topology framework of a high-voltage cascade energy storage system, which comprises a photoelectric second switch, wherein a battery management system BMS is connected with an Ethernet interface on the second switch through an Ethernet, an optical fiber interface on the second switch is in communication connection with an energy management system EMS through an optical fiber, and the battery management system BMS transmits received running information of a battery cluster to the energy management system EMS through the Ethernet, the second switch and the optical fiber.
The utility model relates to a network communication topology framework of a high-voltage cascade energy storage system, which comprises an air conditioner, a fire protection system and a protocol converter, wherein the air conditioner, the fire protection system and an energy storage converter main control box are all in communication connection with the protocol converter through an RS485 longitudinal direction, the protocol converter is in communication connection with a second switch through an Ethernet, and fire protection information of the air conditioner, fire protection system, air conditioner information and related information of the energy storage converter main control box are all transmitted to an energy management system EMS through the protocol converter and the second switch.
According to the network communication topology framework of the high-voltage cascade energy storage system, the power supply of the battery management system main control unit BCMU, the battery management system slave control unit BMM and the network light conversion module is all taken from a battery cluster, and the power supply of the light conversion module is taken from an additional power supply.
According to the network communication topology framework of the high-voltage cascade energy storage system, a breaker and a contactor are arranged in the high-voltage box, and operation information of a battery pack sent by a battery management system main control unit BCMU to the battery management system BMS comprises voltages, currents, charging states SOC of the battery cells, temperatures of the battery cells and states of the breaker and the contactor in the high-voltage box.
The beneficial effects of the utility model are as follows: according to the network communication topology framework of the high-voltage cascade energy storage system, a network light conversion module, an optical network conversion module and a first switch are sequentially arranged between a battery management system main control unit BCMU and a battery management system BMS in a high-voltage box, a CAN port, an RS485 interface and an Ethernet port of the battery management system main control power supply BCMU are respectively in communication connection with a battery management system slave control unit BMM, a unit control board and the network light conversion module, so that operation information of a battery cluster acquired by the battery management system main control unit BCMU is firstly converted into an optical signal from an electrical signal through the network light conversion module, then transmitted to the optical network conversion module through an optical fiber, and then converted into the electrical signal by the optical network conversion module and transmitted to the battery management system BMS through the first switch, and the battery management system BMS is convenient for management control of the battery cluster; it CAN be seen that, adopt ethernet communication and keep apart through the optical signal between battery management system main control unit BCMU and the battery management system BMS, not only utilized optic fibre to realize high-pressure isolation, compared with current adoption CAN bus communication moreover, solved the problem that the channel jam and the maintenance technique degree of difficulty that CAN communication brought are high, more do benefit to safely, stably upload the operation information of the battery cluster of gathering.
Drawings
Fig. 1 is a schematic diagram of a network communication topology architecture of a high voltage cascade energy storage system of the present utility model.
In the figure: the system comprises a battery cluster 1, a battery management system main control unit BCMU 2, a battery management system slave control unit BMM 3, a battery management system BMS 4, an energy management system EMS 5, a network light conversion module 7, an optical network conversion module 8, a first switch 9, a second switch 10, an energy storage converter main control box 11, an air conditioner and fire protection system 12 and a protocol converter 13.
Detailed Description
The utility model will be further described with reference to the drawings and examples.
As shown in fig. 1, a schematic diagram of a network communication topology architecture of the high-voltage cascade energy storage system of the present utility model is provided, which is composed of a battery management system BMS, an energy management system EMS, an energy storage converter main control box 11, n battery clusters 1, n unit control boards 4, a battery management system main control unit BCMU, a battery management system slave control unit BMM, a network light conversion module 7, an optical network conversion module 8, a first switch 9, a second switch 10, an air-conditioning and fire-fighting system 12, and a protocol converter 13, each battery cluster 1 is shown to have k series-connected electric cores, and the battery management system main control unit BCMU is disposed in the high-voltage box. Each battery cluster 1 is provided with a battery management system main control unit BCMU and a battery management system slave control unit BMM for controlling the running state of the battery cluster, and each battery management system main control unit BCMU is provided with a CAN port, an RS485 interface and an Ethernet port.
The battery management system main control unit BCMU is communicated with the battery management system slave control unit BMM through a CAN port to acquire operation information including current, voltage, state of charge (SOC) of an electric core and temperature of the electric core of a corresponding battery cluster, and is communicated with the unit control board 4 through an RS485 interface to upload the corresponding operation information of the battery cluster 1 to the unit control board, and is in communication connection with the network light conversion module 7 through an Ethernet port, and the network light conversion module 7 converts the received operation information of the battery cluster 1 in the form of an electric signal into an optical signal. The output end of the network light conversion module 7 is connected with the input end of the light conversion network module 8 through an optical fiber, the light conversion network module 8 is communicated with the battery management system BMS through the first switch 9, the light conversion network module 8 is used for converting received light signals into electric signals and inputting the electric signals into the first switch 9, and then the first switch 9 sends the operation information of the battery cluster 1 in the form of the electric signals to the battery management system BMS.
The power supply of the battery management system main control unit BCMU, the battery management system slave control unit BMM and the network light conversion module 7 is all taken from a battery cluster, and the power supply of the light conversion network module 8 is taken from an additional power supply.
It CAN be seen that in the network communication topology architecture of the high-voltage cascade energy storage system, the battery management system main control unit BCMU in the high-voltage box adopts the method of taking electricity from the direct-current side battery, so that the normal power supply of the battery management system main control unit BCMU is ensured, the output port of the battery management system main control unit BCMU is provided with a CAN port, an ethernet port and an RS485 interface, and the ethernet port is mainly used for transmitting all information of the current battery cluster to the BMS display control screen, wherein the high-voltage isolation is realized by utilizing the network light conversion module 7 and the light conversion module 8 which are in optical fiber communication in the transmission process from the battery management system main control unit BCMU to the battery management system BMS due to the voltage level of the high-voltage cascade energy storage system.
The second switch 10 is a photoelectric switch, an ethernet interface and an optical fiber interface are arranged on the second switch 10, the battery management system BMS is in communication connection with the second switch 10 through optical fibers, and the optical fiber interface on the second switch 10 is in communication connection with the energy management system EMS through optical fibers, so that the running information of the battery cluster 1 received by the battery management system BMS is sequentially transmitted to the energy management system EMS through the ethernet, the second switch and the optical fibers.
The air-conditioning and fire-fighting system 12 and the energy storage converter main control box 11 are connected with an RS485 interface on the protocol converter 13 through an RS485 bus, and an Ethernet interface of the protocol converter 13 is connected with an Ethernet interface on the second switch 10, so that relevant information sent by the air-conditioning and fire-fighting system 12 and the energy storage converter main control box 11 is converted through a protocol of the protocol converter 13 and then is transmitted to the energy management system EMS through the second switch 10.
The network communication topology architecture of the high-voltage cascade energy storage system of the utility model has the working principle that: the battery management system slave control unit BMM transmits the collected cell voltage and current information to the battery management system master control unit BCMU through the CAN bus, the battery management system master control unit BCMU transmits all cell voltage, current, SOC and temperature information of the cluster and relevant states of a breaker and a contactor in a high-voltage box to the network light conversion module 7 in the form of optical signals through the network light conversion module, and all information is transmitted to the first switch 9 through the optical light conversion module 8 and is communicated with the battery management system display control system BMS through the first switch 9.
The energy storage converter main control box 11 is communicated with the protocol converter 13 through 485 interfaces, the protocol converter 13 is connected with the switch through a network cable, and all information is uploaded to the energy management system EMS through the photoelectric switch. The battery management system BMS communicates with the second switch 10 through the ethernet interface, and uploads information of all battery clusters to the energy management system EMS through the second switch 10.
The network communication topology framework of the high-voltage cascade energy storage system not only realizes effective communication from the battery cluster 1 to the battery management system BMS, has simple connection and maintenance modes, realizes high-voltage isolation of the battery cluster operation information uploading link, but also can rapidly realize upgrade of the battery management system main control unit BCMU from the first switch.
Claims (5)
1. The network communication topology framework of the high-voltage cascade energy storage system comprises a battery management system BMS (5), an energy management system EMS (6), an energy storage converter main control box (11) and n battery clusters (1), wherein each battery cluster is provided with a battery management system main control unit BCMU (2) and a battery management system slave control unit BMM (3) for managing the battery clusters, and the battery management system main control unit BCMU is arranged in the high-voltage box; each battery cluster is correspondingly provided with a unit control board (4); the method is characterized in that: the battery management system main control unit BCMU is communicated with the battery management system BMS (5) through the network light conversion module (7), the optical network conversion module (8) and the first switch (9) in sequence so as to upload the running information of the battery cluster to the battery management system BMS, wherein the battery management system main control unit BCMU is provided with a CAN port, an Ethernet port and an RS485 interface; the battery management system main control unit BCMU is communicated with the battery management system slave control unit BMM through a CAN port, is connected with the unit control board through an RS485 interface, is connected with the input end of the network light conversion module through an Ethernet port, the output end of the network light conversion module is connected with the input end of the optical network conversion module, and the output of the optical network conversion module is connected with the communication port of the battery management system BMS through a first switch (9).
2. The network communication topology of a high voltage cascade energy storage system of claim 1, wherein: the system comprises a photoelectric second switch (10), wherein a battery management system BMS (5) is connected with an Ethernet interface on the second switch through an Ethernet, an optical fiber interface on the second switch is connected with an energy management system EMS (6) through an optical fiber in a communication mode, and the battery management system BMS transmits the received operation information of the battery cluster (1) to the energy management system EMS through the Ethernet, the second switch and the optical fiber.
3. The network communication topology of a high voltage cascade energy storage system of claim 2, wherein: the energy management system comprises an air conditioner and fire protection system (12) and a protocol converter (13), wherein the air conditioner and fire protection system and an energy storage converter main control box (11) are longitudinally connected with the protocol converter in a communication mode through an RS485, the protocol converter is connected with a second switch (10) in a communication mode through an Ethernet, and fire protection information, air conditioner information and related information of the energy storage converter main control box of the air conditioner and fire protection system are transmitted to an energy management system EMS (6) through the protocol converter and the second switch.
4. The network communication topology of a high voltage cascade energy storage system of claim 1 or 2, wherein: the power supply of the battery management system main control unit BCMU (2), the battery management system slave control unit BMM (3) and the network switching module (7) is all taken from a battery cluster, and the power supply of the optical switching module (8) is taken from an additional power supply.
5. The network communication topology of a high voltage cascade energy storage system of claim 1 or 2, wherein: the high-voltage box is internally provided with a breaker and a contactor, and the running information of the battery cluster (1) sent by the battery management system main control unit BCMU (2) to the battery management system BMS (5) comprises the voltage, the current, the charging state SOC and the battery temperature of all battery cells in the battery cluster (1) and the states of the breaker and the contactor in the high-voltage box.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202322227577.3U CN220874555U (en) | 2023-08-18 | 2023-08-18 | Network communication topology framework of high-voltage cascade energy storage system |
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| CN202322227577.3U CN220874555U (en) | 2023-08-18 | 2023-08-18 | Network communication topology framework of high-voltage cascade energy storage system |
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- 2023-08-18 CN CN202322227577.3U patent/CN220874555U/en active Active
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