CN112565446B - Operation and maintenance management system for cadmium-nickel battery pack - Google Patents
Operation and maintenance management system for cadmium-nickel battery pack Download PDFInfo
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- H04L67/00—Network arrangements or protocols for supporting network services or applications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H—ELECTRICITY
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Abstract
The invention relates to the technical field of cadmium-nickel battery pack management, in particular to a cadmium-nickel battery pack operation and maintenance management system, which can realize mass data interaction and can also carry out point-to-point analysis and maintenance on specific equipment, thereby greatly improving the flexibility and the adaptability of the system. The technical scheme includes that the system comprises a collection unit, a monitoring control unit and a communication unit, wherein in a normal working mode, the communication unit is based on Ethernet communication and transmits real-time data of a cadmium-nickel battery pack to a rail train network through a data channel adopting a TRDP transmission protocol; and in the maintenance mode, closing the data channel adopting the TRDP transmission protocol, switching to another data channel adopting the TCP protocol to keep data interaction with the rail train network, and returning to the normal working mode after the maintenance is finished. The invention is suitable for the operation and maintenance management of the cadmium-nickel battery pack.
Description
Technical Field
The invention relates to the technical field of cadmium-nickel battery pack management, in particular to a cadmium-nickel battery pack operation and maintenance management system.
Background
Along with the increase of the demand for rapid and safe rail transit trip modes and the continuous evolution of intelligent driving technologies, the technology of an intelligent unmanned subway rail train is also gradually emphasized, the premise of intellectualization is real-time data acquisition and transmission, a cadmium-nickel battery pack serving as an important matched component in a power system of the rail train needs a corresponding battery management system to realize battery monitoring analysis and transmit basic data to a central control system of the train through a rail train network, the cadmium-nickel battery pack is influenced by factors such as long use time, environmental temperature and the like in the use process, and the working state of the cadmium-nickel battery pack is in the continuous change process, so that the cadmium-nickel battery pack needs to be managed and maintained in real time.
At present, the offline management and maintenance of the storage battery are mainly carried out by using a special maintenance interface on self equipment, and power failure detection and maintenance are required to be carried out after a train is offline. For example, it is common to use a USB interface and a dedicated maintenance device to connect to a battery installation location to analyze and detect data.
On-line management and maintenance, a track train communication network mainly adopts a single-channel MVB (multifunctional vehicle bus) for data interaction, the MVB is a serial data communication bus, belongs to a part of a train communication network, is mainly used for data communication between devices with interoperability and interchangeability requirements, and the transmission rate of the MVB is about 1.5Mbps (fixed rate). Although the MVB can guarantee communication in real-time, it cannot satisfy the transmission of massive data, and therefore, when a large amount of data needs to be transmitted, problems such as bus blocking and control time delay will be caused.
And a TRDP (Train Real-time Data Protocol) communication mode based on Ethernet, wherein TRDP belongs to a special Protocol for rail transit, and the transmission is carried out based on a UDP mode.
Disclosure of Invention
The invention aims to provide a cadmium-nickel battery pack operation and maintenance management system, which can realize mass data interaction, can perform point-to-point analysis and maintenance on specific equipment, avoids data mistransmission and interference and greatly improves the flexibility and adaptability of the system.
The invention adopts the following technical scheme to realize the aim, and the operation and maintenance management system of the cadmium-nickel battery pack is applied to the data management of the cadmium-nickel battery pack on a rail train and comprises an acquisition unit, a monitoring control unit and a communication unit;
the acquisition unit is used for acquiring real-time data information of the cadmium-nickel battery pack and transmitting the data information to the monitoring control unit in real time;
the monitoring control unit is used for controlling charging and discharging of the cadmium-nickel battery pack and calculating the SOC (Sate of charge) of the cadmium-nickel battery pack in a working mode; the calculation result and the real-time data information are sent to a rail train network through a communication unit;
the communication unit comprises a TCP server with double redundant channels, wherein one TCP data channel is used as a maintenance channel to be connected with an external terminal, and the other TCP data channel keeps data interaction with a rail train network;
the communication unit also comprises a plurality of paths of mutually redundant data channels adopting a TRDP transmission protocol;
under a normal working mode, the communication unit is based on Ethernet communication and transmits real-time data of the cadmium-nickel battery pack to a rail train network through a data channel adopting a TRDP transmission protocol; in the maintenance mode, corresponding equipment is maintained through one path of TCP data channel, the data channel adopting a TRDP transmission protocol is closed, the other path of TCP data channel is switched to maintain data interaction with the rail train network, and the normal working mode is returned when the maintenance is finished.
Further, the real-time data information of the cadmium-nickel battery pack comprises the total voltage of the cadmium-nickel battery pack, the voltage of a single cell, the current of the nickel battery pack and temperature information.
Furthermore, the monitoring control unit is used for monitoring and analyzing real-time data of the cadmium-nickel battery pack, transmitting historical data, upgrading software of the operation and maintenance management system and setting threshold parameters in a maintenance mode.
Further, the multiple mutually redundant data channels adopting the TRDP transmission protocol are 2 mutually redundant data channels adopting the TRDP transmission protocol, wherein one channel uses the first ethernet port as a first interface of the TRDP data channel and is connected to the train network; the other path of the channel takes a second Ethernet port as a second interface of the TRDP data channel and is connected with the train network; the first Ethernet port and the second Ethernet port form a redundant TRDP interface, and information is transmitted to the central control of the train in a multicast mode through the TRDP interface.
Further, the first interface of the TRDP data channel and the second interface of the TRDP data channel have the same ComId and different IP addresses, and the transmission information is combined to be used as the unique identifier of the train message.
The monitoring system further comprises a storage unit, wherein the storage unit is used for storing the real-time data acquired by the acquisition unit, the data processed by the monitoring control unit and the corresponding data of the system.
Further, the system corresponding data stored in the storage unit includes: storing system key operation data and system operation historical data, wherein the system key operation data comprise SOC, SOH, system operation time and early warning information; the storage of the system operation historical data comprises periodic storage and instant dynamic storage.
Further, the cell voltage, total pressure, current, temperature, charge and discharge state, early warning information, communication state, relay state, self-checking state and real-time information of the battery are stored in a fixed mode in a set time period in a periodic storage mode; the real-time dynamic storage is dynamically and immediately stored according to the real-time special working state of the system, and the special working state is set according to the analysis result of the monitoring control unit on the real-time data.
The system further comprises an upper computer management platform, wherein the upper computer management platform is connected with the cadmium-nickel battery pack operation and maintenance management system through a data channel adopting a TCP protocol, and is used for sending a maintenance instruction to enable the system to enter a maintenance mode; and carrying out remote monitoring, historical data export analysis, system upgrading and simulation control in a maintenance mode.
Under a normal working mode, the communication unit is based on Ethernet communication and transmits real-time data of the cadmium-nickel battery pack to a rail train network through a data channel adopting a TRDP transmission protocol, so that transmission interaction of mass data is realized; in the maintenance mode, corresponding equipment is maintained through one path of data channel adopting a TCP (transmission control protocol), the data channel adopting a TRDP (transmission control protocol) transmission protocol is closed, and the other path of data channel adopting the TCP protocol is switched to keep data interaction with a rail train network, so that point-to-point analysis and maintenance of specific equipment are realized, the influence of the TRDP data channel is avoided, and the equipment returns to the normal working mode after the maintenance is finished; sending a maintenance instruction through an upper computer management platform to enable the system to enter a maintenance mode; the remote monitoring, the derivation analysis of historical data, the system upgrading and the analog control are carried out in a maintenance mode, and the system is practical, convenient and flexible.
Drawings
FIG. 1 is a block diagram of a system for operation and maintenance management of a cadmium-nickel battery pack according to the present invention.
Detailed Description
The invention relates to a cadmium-nickel battery pack operation and maintenance management system, which is applied to data management of a cadmium-nickel battery pack on a rail train and comprises an acquisition unit, a monitoring control unit and a communication unit;
the acquisition unit is used for acquiring real-time data information of the cadmium-nickel battery pack and transmitting the data information to the monitoring control unit in real time;
the monitoring control unit is used for controlling charging and discharging of the cadmium-nickel battery pack and calculating the SOC of the cadmium-nickel battery pack in a working mode; the calculation result and the real-time data information are sent to a rail train network through a communication unit;
the communication unit comprises a TCP server with double redundant channels, wherein one TCP data channel is used as a maintenance channel to be connected with an external terminal, and the other TCP data channel keeps data interaction with a rail train network;
the communication unit also comprises a plurality of paths of mutually redundant data channels adopting a TRDP transmission protocol;
under a normal working mode, the communication unit is based on Ethernet communication and transmits real-time data of the cadmium-nickel battery pack to a rail train network through a data channel adopting a TRDP transmission protocol; in the maintenance mode, corresponding equipment is maintained through one path of TCP data channel, the data channel adopting a TRDP transmission protocol is closed, the other path of TCP data channel is switched to maintain data interaction with the rail train network, and the normal working mode is returned when the maintenance is finished.
The real-time data information of the cadmium-nickel battery pack comprises the total voltage of the cadmium-nickel battery pack, the voltage of a single battery, the current of the nickel battery pack and temperature information; wherein the total voltage acquisition can be realized by using a Hall voltage sensor; the monomer voltage acquisition uses 2 groups of serial cadmium-nickel storage batteries as a battery voltage acquisition unit, and the whole storage battery pack is formed by connecting a plurality of acquisition units in series; current acquisition uses hall current sensor to realize, considers the actual operating condition of system to have 3 kinds: emergency power supply, traction and dormancy; when the system is in an emergency power supply or traction mode, the output current is large (more than 100A), and when the system is in a sleep mode, the output current of the system does not exceed 1A; in order to accurately detect the output current of the system, a BMS (battery management system) is provided with two Hall current sensor channels; the channel 1 is a wide-range Hall current sensor and is responsible for collecting current sampling when the system works normally (the output current is large); the channel 2 is a small-range Hall current sensor and is responsible for collecting current sampling when the system is in a low-current output state in a standby mode; temperature sampling points need to be uniformly distributed at each position of the battery according to the structure of the battery pack; the system power supply is used for supplying power to the cadmium-nickel storage battery pack, and a high-voltage isolation type direct-current step-down power supply module is adopted to supply power to a low-voltage module in the BMS; the unit can be built by selecting corresponding sensors and analog-to-digital conversion chips, and can also select a single chip with the function.
The monitoring control unit is used for monitoring and analyzing real-time data of the cadmium-nickel battery pack, transmitting historical data, upgrading software of an operation and maintenance management system and setting threshold parameters in a maintenance mode; the monitoring control unit comprises a central control unit (MCU), and can select a proper singlechip or a special chip integrating multiple functions; the clock unit is used for providing the clock frequency required by the system; and the register is used for setting various protection parameter thresholds and storing configuration parameters.
The multi-channel mutually redundant data channel adopting the TRDP transmission protocol is 2 channels mutually redundant data channel adopting the TRDP transmission protocol, wherein one channel takes a first Ethernet port as a first interface of the TRDP data channel and is connected with a train network; the other path of the channel takes a second Ethernet port as a second interface of the TRDP data channel and is connected with the train network; the first Ethernet port and the second Ethernet port form a redundant TRDP interface, and information is transmitted to the central control of the train in a multicast mode through the TRDP interface.
The first interface of the TRDP data channel and the second interface of the TRDP data channel have the same ComId and different IP addresses, and the transmission information is combined to be used as the unique mark of the train message.
The Ethernet terminal equipment on the train generally comprises traction system equipment, brake system equipment, signal system equipment and the like, the equipment is connected to an Ethernet switch interface, and an Ethernet ring network is adopted to penetrate through the whole train. Because the maintenance server is built based on the TCP protocol, the data protocol processing needs to be ensured: the TCP server address needs to be the same according to IP addresses distributed by the data channels of the first interface and the second interface of the TRDP, and the port number of the server cannot be repeated with the communication port number of the TRDP, so that the normal communication conflict with the working state of the train is avoided. After connecting with the TCP server, the TRDP data channel is reconfigured, and the multicast monitoring and transmitting unit is closed.
The transmission communication protocol for maintenance can be automatically defined in the maintenance mode, the Ethernet terminal equipment on the train generally comprises traction system equipment, brake system equipment, signal system equipment and the like, the network equipment is accessed in a plurality of ways, all the equipment is connected to an Ethernet switch interface, and an Ethernet ring network is adopted to penetrate through the whole train. Because the maintenance server is built based on a transport layer TCP protocol, the constant connection of an automatic retransmission mechanism is kept, a bottom-layer unpacking and packing mode exists through a train switch, and in order to ensure that the communication quality avoids causing interference to a system network when the maintenance is started, the data transmission processing is carried out according to the following mode: for continuously transmitting small data (less than 40 bytes), the data transmission interval is not less than 2 ms; for continuously transmitting large data (less than 512 bytes), the data transmission interval is not less than 5ms, for transmitting the large data and the data stream, the large data and the data stream are split firstly at an application layer, and the normal receiving of the data is realized through the application layer verification protocol guarantee according to the transmission frequency.
After the real-time monitoring, data export and upgrade actions in the maintenance mode are completed, a reset instruction is sent to the system equipment, and the storage battery system is reset to be converted into a TRDP normal communication working mode.
The system also comprises a storage unit, wherein the storage unit is used for storing the real-time data acquired by the acquisition unit, the data processed by the monitoring control unit and the corresponding data of the system.
The system corresponding data stored in the storage unit comprises: storing system key operation data and system operation historical data, wherein the system key operation data comprise SOC, SOH, system operation time and early warning information; the storage of the system operation historical data comprises periodic storage and instant dynamic storage.
The method comprises the steps of periodically storing the single voltage, total pressure, current, temperature, charge and discharge states, early warning information, communication states, relay states, self-checking states and real-time information of a battery in a set time period; the real-time dynamic storage is dynamically and immediately stored according to the real-time special working state of the system, the special working state is set according to the analysis result of the monitoring control unit on the real-time data, and the real-time storage is performed when the battery is monitored to be in an overvoltage, undervoltage, overcurrent, overcharge, overdischarge, high-temperature and low-temperature early warning state or the state is cancelled. The frequency cycle of real-time storage needs to be determined according to the special state, for example, for an overcurrent early warning state, continuous 10s real-time storage needs to be performed at a frequency of 200ms-400 ms/time, and for overvoltage and undervoltage, continuous 1min storage needs to be performed at a frequency of 1 s/time and in reverse.
The system also comprises an upper computer management platform, wherein the upper computer management platform is connected with the cadmium-nickel battery pack operation and maintenance management system through a data channel adopting a TCP protocol, and is used for sending a maintenance instruction to enable the system to enter a maintenance mode; carrying out remote monitoring, historical data export analysis, system upgrading and simulation control in a maintenance mode; the export analysis of historical data, the system upgrade and the simulation control are carried out under the condition that two channels are switched in a mode (namely, a TCP protocol channel is adopted for maintenance and data interaction), the remote detection function only needs mode conversion of one channel, the redundancy mode is cancelled, meanwhile, the interaction with a central control system of the train is reserved, the online joint debugging function is realized, and after the maintenance analysis is completed, a control instruction is sent to convert the operation and maintenance system of the cadmium-nickel battery pack into a normal working mode. After the data are exported, a database is locally established, battery parameter trend graphs under different threshold values can be established, and the running state of the storage battery can be conveniently evaluated to establish a battery health data file.
The invention relates to a structural block diagram of a cadmium-nickel battery pack operation and maintenance management system, which comprises a collection unit, a storage unit, a monitoring control unit, a communication unit and a host computer platform, wherein the collection unit collects voltage information, current information and temperature information of the cadmium-nickel battery pack in real time, transmits data information to the storage unit for storage, transmits the data information to the monitoring control unit for charge-discharge control of the cadmium-nickel battery pack and SOC calculation, and respectively transmits calculation results and received real-time data information to the storage unit for storage and transmits the calculation results and the received real-time data information to the train network and the host computer platform through the communication unit (shown in the figure) based on Ethernet communication.
In particular implementations, the invention can be implemented in real time according to the following data and steps.
Technical parameters of cadmium-nickel battery system
(1) The high-voltage isolation power supply converts the DC110V into a system low-voltage power supply;
(2) and the voltage and the temperature of the storage battery are collected by adopting an LTC6804 chip, 40 storage batteries and 8 temperature collection points are contained in a single box body. Voltage acquisition range: 0-5V, sampling precision: +/-5 mV. Temperature acquisition range: -50 ℃ to 120 ℃, precision of acquisition: temperature acquisition was performed using a thermistor at + -2 ℃. Meanwhile, in order to ensure the accuracy of data acquisition, a reference power supply and the like under the condition of voltage acquisition line connection are detected.
(3) The battery pack total current is collected by using a 12-bit AD module in the single chip microcomputer, the current Hall sensor is arranged outside the single chip microcomputer, the reference voltage of the internal AD module is 5V, and the collection period is 100 ms. Two AD acquisition channels are used in the system to respectively acquire positive current (charging current) and negative current (discharging current). Adopting a negative current value when the AD value corresponding to the positive current value is 0; when the AD value corresponding to the negative current value is 0, the positive current value is adopted. In order to improve the current collection precision, the current unit is set as 100 mA.
(4) 8 temperature collection points: an NTC temperature detection resistor sealed in a copper terminal by glue is connected to the negative electrode of the battery to detect the temperature of the storage battery;
(5) and a communication interface:
based on an Ethernet communication module, a TRDP protocol is adopted for transmission, and the unit is provided with 2 paths of communication channels which are mutually redundant. When the system is in a normal working mode, the system is used as a client to be connected with a train data center unit server to send the real-time monitoring data of the cadmium-nickel battery pack to the train data center unit server. And meanwhile, a TCP server is built in the local system, and a control instruction of the upper computer management platform is received. When the upper computer management platform is used as a client to be connected with the battery intelligent operation and maintenance system and sends a maintenance mode entering instruction, a channel which is used as a system client to be connected with the train data center unit server is closed, and when the maintenance mode is finished, the system is restored to be used as the client to be connected with the train data center unit server.
(6) And SOC calculation:
the SOC has a great relationship with parameters such as voltage, current, temperature and the like of the cadmium-nickel storage battery, so that the SOC is calculated and corrected by sampling various parameters. And calculating the SOC by adopting a deep optimized ampere-hour integration method. Basic formula of calculation:
wherein, C N The rated capacity of the battery; i is the battery current; eta is charge-discharge efficiency
And converting the battery temperature into a compensation coefficient by integrating current and time, introducing the compensation coefficient into SOC estimation, and comparing a discharge curve of the storage battery pack to perform correction calculation to obtain a residual capacity value.
(7) Data sampling and alarming:
the parameters for detecting and intelligently calculating the management system comprise:
estimating the total voltage of the battery pack, the charge and discharge current of the battery pack and the residual capacity of the battery pack.
The main alarm types are: the method comprises the following steps of whole-group overvoltage early warning, whole-group low-voltage early warning, over-temperature early warning, discharging overcurrent early warning, charging overcurrent early warning, single fault early warning, over-temperature difference early warning and SOC over-low early warning.
(8) And data storage:
during operation, data on SOC-related parameters, charge/discharge capacity/energy, etc., which are stored in the FRAM, need to be stored at high frequency. In the design, an FM24C64 storage space 8KB is used, IIC communication is adopted between the MCU and the FRAM, and the time period is 100 KHz. In order to avoid the influence of storage failure caused by power failure in the data storage process, related parameters are processed in a mode of alternately storing two different storage spaces, and at least one round of normal data storage is guaranteed.
FLASH (model: S70FL01GS) was used for system history data storage in the design, with 1Gbit (128MB) memory chip, 512B (1 page) minimum unit of operation, and 256kB (1 sector) minimum unit of erasure. The MCU and the FLASH adopt SPI communication, and the S70FL01GS clock extreme value and phase can support the operation of the mode 0 and the mode 3. In the project design, the SPI clock period is set to be 1000KHz, the clock extreme value CPOL is 1, and the level is high when the clock is idle; the clock phase CPHA is 1, data is collected at the rear edge of the clock cycle, data is output at the front edge of the clock cycle, and high bits are output first. The size of each round of data of the historical data is 512 bytes, 1 page of FLASH space is occupied, so that 128MB/0.5 KB-256K rounds of data can be stored in total, and the latest data automatically overwrites the earliest data after the FLASH is full. The storage of historical data is divided into periodic storage and instant dynamic storage, the periodic storage function is used for fixedly storing the information of the cell voltage, total pressure, current, temperature, charging and discharging states, early warning information, communication states, relay states, self-checking states, real-time and the like of the battery in a set time period, the instant dynamic storage function is used for dynamically and instantly storing according to the real-time special working state of the system, the special working state is generally set according to the analysis result of the monitoring control unit on the real-time data, and the instant dynamic storage function is used for storing in real time when the battery is monitored to be in an overvoltage, undervoltage, overcurrent, overcharge, overdischarge, high temperature and low temperature early warning state or the state is canceled.
(9) And an upper computer management platform:
and (3) real-time data display and analysis: remote display of real-time data is carried out through the host computer, and corresponding data are analyzed to establish a working state and operation and maintenance fault information table, as shown in table 2:
TABLE 2 working State failure information Table
(10) And historical data export storage: after the upper computer starts to send a historical data export instruction, all received frame information is stored in a TXT document of an upper computer platform database, the stored path is data storage/year _ month _ day/hour _ minute _ second _ file sequence number TXT, and the file name is the system time when the frame is received for the first time, such as: data store/2020 _10_10/08_08_08_1. txt. The time for receiving the first frame is 10/8/10/2020/10, and each TXT stores up to 100000 pieces of frame information because the file should not be too large. If 100000 messages are stored in one time, the program automatically creates a new TXT file with the same format as the previous TXT file name, but the file number is automatically increased by one, and the analogy is repeated once when 100000 messages are stored. And after the data are exported to the upper computer platform database, the storage unit of the intelligent operation and maintenance system can be erased.
(11) And the system upgrading function: the upper computer management platform can send an upgrading instruction through the Ethernet and control the operation and maintenance system to enter a Bootloader mode to carry out corresponding software upgrading. And upgrading and maintaining the internal programs of the whole operation and maintenance system under the condition of not dismantling the system. In order to ensure the accuracy of data in the upgrading process, a dual-guarantee mechanism of interactive response and data verification is adopted in the whole upgrading process, after an upgrading target is confirmed and an upgrading file is loaded, upgrading is started, firstly, a command of entering an upgrading state is sent in a period of 1s, and the responses of the operation and maintenance system are continuously counted to ensure that all control panels (different according to different settings) in the system enter the upgrading state. And all the control panels successfully enter an upgrading state and start interactive upgrading, the upgrading software receives the response of the operation and maintenance system every time 1 frame of data is transmitted, and the upgrading software performs the next operation according to different response instructions. And after the BMS system is upgraded, sending an exit 'upgrading state' command in a period of 1s, continuously counting the exit condition of the target control panel, and after all the control panels exit the 'upgrading state', finishing the upgrading of the operation and maintenance system.
(12) And a parameter setting function: after entering the operation and maintenance mode, the upper computer management platform can send working state threshold parameters (overvoltage, overcurrent, temperature difference and the like) and relay control instructions to carry out corresponding simulation tests, so that remote debugging is realized.
In conclusion, the invention can realize mass data interaction, and simultaneously can carry out point-to-point analysis and maintenance on specific equipment, avoid data mistransmission and interference and greatly improve the flexibility and the adaptability of the system.
Claims (9)
1. The cadmium-nickel battery pack operation and maintenance management system is applied to data management of the cadmium-nickel battery pack on a rail train and is characterized by comprising an acquisition unit, a monitoring control unit and a communication unit;
the acquisition unit is used for acquiring real-time data information of the cadmium-nickel battery pack and transmitting the data information to the monitoring control unit in real time;
the monitoring control unit is used for controlling charge and discharge of the cadmium-nickel battery pack and calculating the SOC of the cadmium-nickel battery pack in a working mode; the calculation result and the real-time data information are sent to a rail train network through a communication unit;
the communication unit comprises a TCP server with double redundant channels, wherein one TCP data channel is used as a maintenance channel to be connected with an external terminal, and the other TCP data channel keeps data interaction with a rail train network;
the communication unit also comprises a plurality of paths of mutually redundant data channels adopting a TRDP transmission protocol;
under a normal working mode, the communication unit is based on Ethernet communication and transmits real-time data of the cadmium-nickel battery pack to a rail train network through a data channel adopting a TRDP transmission protocol; in the maintenance mode, corresponding equipment is maintained through one TCP data channel, the data channel adopting a TRDP transmission protocol is closed, the other TCP data channel is switched to keep data interaction with a rail train network, and the normal working mode is returned when the maintenance is finished.
2. The operation and maintenance management system for the cadmium-nickel battery pack according to claim 1, wherein the real-time data information of the cadmium-nickel battery pack comprises the total voltage of the cadmium-nickel battery pack, the voltage of a single cell, and the current and temperature information of the nickel battery pack.
3. The cadmium-nickel battery pack operation and maintenance management system as claimed in claim 1, wherein the monitoring control unit is used for monitoring and analyzing real-time data of the cadmium-nickel battery pack, transmitting historical data, upgrading software of the operation and maintenance management system and setting threshold parameters in the maintenance mode.
4. The operation and maintenance management system for the cadmium-nickel battery pack according to any one of claims 1 to 3, wherein the plurality of mutually redundant data channels adopting a TRDP transmission protocol are 2 mutually redundant data channels adopting a TRDP transmission protocol, and one channel uses the first Ethernet port as a first interface of the TRDP data channel and is connected with a train network; the other path of the channel takes a second Ethernet port as a second interface of the TRDP data channel and is connected with the train network; the first Ethernet port and the second Ethernet port form a redundant TRDP interface, and information is transmitted to the train center control in a multicast mode through the TRDP interface.
5. The operation and maintenance management system for nickel-cadmium batteries according to claim 4, wherein the first interface of the TRDP data channel and the second interface of the TRDP data channel have the same ComId and different IP addresses, and the transmission information is combined to be used as a unique identifier of a train message.
6. The operation and maintenance management system of the cadmium-nickel battery pack according to claim 1, further comprising a storage unit, wherein the storage unit is used for storing the real-time data collected by the collection unit, the data processed by the monitoring control unit and the corresponding data of the system.
7. The operation and maintenance management system for nickel-cadmium batteries according to claim 6, wherein the system corresponding data stored in the storage unit comprises: storing system key operation data and system operation historical data, wherein the system key operation data comprise SOC, SOH, system operation time and early warning information; the storage of the system operation historical data comprises periodic storage and instant dynamic storage.
8. The operation and maintenance management system of the cadmium-nickel battery pack according to claim 7, wherein the cell voltage, total pressure, current, temperature, charge and discharge states, early warning information, communication state, relay state, self-checking state and real-time information of the battery are stored periodically and fixedly in a set time period; the real-time dynamic storage is dynamically and immediately stored according to the real-time special working state of the system, and the special working state is set according to the analysis result of the monitoring control unit on the real-time data.
9. The cadmium-nickel battery pack operation and maintenance management system according to claim 8, further comprising an upper computer management platform, wherein the upper computer management platform is connected with the cadmium-nickel battery pack operation and maintenance management system through a data channel adopting a TCP protocol, and the upper computer management platform is used for sending a maintenance instruction to enable the system to enter a maintenance mode; and carrying out remote monitoring, historical data export analysis, system upgrading and simulation control in a maintenance mode.
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| CN110658465A (en) * | 2019-11-01 | 2020-01-07 | 四川长虹电器股份有限公司 | Cadmium-nickel battery management system |
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