CN213082960U - Energy storage system online monitoring system for non-contact-net-powered light rail vehicle - Google Patents
Energy storage system online monitoring system for non-contact-net-powered light rail vehicle Download PDFInfo
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- CN213082960U CN213082960U CN202021113009.0U CN202021113009U CN213082960U CN 213082960 U CN213082960 U CN 213082960U CN 202021113009 U CN202021113009 U CN 202021113009U CN 213082960 U CN213082960 U CN 213082960U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model discloses a no contact net power supply light rail is online monitored control system of energy storage system for vehicle, include: the system comprises a main control module central processing unit, a power supply module, a display screen, a data storage module, a GPRS module, a control center, a driver cab, a magnetic coupling isolation module, a slave control module central processing unit, a relay, a fan, a balance module and a sensor module. The power supply module is connected with the master control module central processing unit and the slave control module central processing unit; the display screen passes through the signal line and links to each other with main control module central processing unit's IO mouth, data storage module passes through the SPI bus and is connected with main control module central processing unit, main control module central processing unit passes through the exchange of GPRS network realization and control center data, and GPRS module and control center adopt wireless connection. The utility model discloses can adjust in a flexible way according to energy storage system's characteristics, monitor energy storage system running state, control it, improve energy storage system's life when avoiding taking place the incident.
Description
Technical Field
The utility model belongs to the technical field of the energy storage system control, especially, relate to a no contact net power supply light rail is online monitored control system of energy storage system for vehicle.
Background
Along with the rapid development of economy, cities are continuously expanded outwards, the population number of the cities is continuously increased, so that the infrastructure pressure of the cities is increased, and urban traffic influences the travel demands of citizens and restricts the development of economy. For many cities, conventional public transportation cannot meet the rigid requirements of people in travel, urban rail transit has the advantages of high speed, punctuality, large transportation capacity and the like, and each country begins to adopt urban rail transit to solve the increasingly serious traffic problem. In places where overhead contact systems cannot be assumed, such as urban business districts and tourist scenic spots, light rail vehicles with energy storage devices can pass through the non-electric area. The storage battery and the super capacitor are connected in parallel to be used as a power system of the vehicle, and the super capacitor provides peak power required by the vehicle in a traction stage; the storage battery provides rated power for normal running in the cruising process; the super capacitor has the advantages of high power density, long service life, high charging and discharging efficiency and the like, so that the super capacitor has wide application prospect in the field of light rail vehicles, and the energy storage device is adopted by rail transit of many countries. The energy storage system is monitored in real time, so that a driver and an operation part can know the real-time state of the energy storage system conveniently, early faults of the energy storage system are processed, and late accidents of vehicles are avoided.
At present, a light rail vehicle without a contact net for power supply is in a rapid development stage, an energy storage system of the light rail vehicle is formed by connecting a storage battery and a super capacitor in parallel, the existing monitoring system is single in monitoring parameter and object and is not suitable for occasions with higher voltage levels, so that isolation design needs to be considered in a key mode, otherwise, monitoring data are inaccurate, and the state of the energy storage system cannot be reflected in real time.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the purpose is single to current energy storage monitored control system monitoring object, and is simple to monitoring data processing, does not carry out voltage balance, does not consider magnetic coupling isolation and temperature control scheduling problem, provides an online monitored control system of energy storage for realize light rail vehicle energy storage system's online monitoring.
The utility model adopts the following technical scheme:
the utility model provides a no contact net power supply light rail vehicle is with energy storage system on-line monitoring system, includes main control module central processing unit, power module, display screen, data storage module, GPRS module, control center, cab, from control module central processing unit, relay, fan, balanced module, sensor module, magnetic coupling isolation.
The power supply module is connected with the master control module central processing unit and the slave control module central processing unit; display screen passing signal line links to each other with main control module central processing unit's IO mouth, data storage module passes through the SPI bus and is connected with main control module central processing unit, main control module central processing unit passes through the exchange of GPRS network realization and control center data, and the GPRS module adopts wireless connection with control center, main control module central processing unit passes through the magnetic coupling and keeps apart, adopts outside CAN bus with data transfer to cab, and RS485 prevents data redundancy as spare bus. The relay is connected with an I/O port of a central processing unit of the slave control module through a signal wire and is used for controlling a fan connected with the relay; the balance module is isolated through magnetic coupling and is connected with a central processing unit of the slave control module through a cable; the sensor module is isolated by magnetic coupling and is connected with a central processing unit of the slave control module by a signal wire. The central processing unit of the master control module is connected with the central processing unit of the slave control module by an internal CAN bus.
Preferably, the central processing unit of the master control module and the central processing unit of the slave control module are both STM32 microprocessing; the GPRS module selects 4Gdtu, is connected with the STM32 microprocessor through a signal line and is used for uploading data information and voltage balance information of the energy storage system acquired by the STM32 microprocessor to a control center.
Preferably, the sensor module includes: voltage sensor, current sensor, temperature sensor. The voltage sensor is connected with a slave control module central processing unit by adopting an SPI bus, the current sensor is connected with the central processing unit by adopting a signal wire, and the temperature sensor is connected with the central processing unit by adopting a single bus.
Preferably, the magnetic coupling isolation module is an isolation device, the type of the device is ADUM6401, and the device realizes effective isolation of high voltage and low voltage and avoids interference of high voltage on the acquired signal.
Preferably, the signal wire and the acquisition end of the temperature sensor are connected in a wire loop mode, and the reliability of voltage and temperature acquisition is ensured through the original connecting nut of the energy storage system; the signal wires and the temperature sensors are connected in a bus mode, and all the connecting wires of the signal wires and the temperature sensors are integrated on one bus cable
The utility model has the advantages that:
compared with the prior art, the utility model has the advantages that the monitoring system adopts a master-slave type overall structure, can monitor a composite system consisting of a super capacitor and a storage battery in real time, and solves the problem that the monitoring object of the current monitoring system is single; the monitoring system adopts magnetic coupling isolation, reduces electromagnetic interference of the energy storage system under high voltage, and ensures the reliability and accuracy of signal acquisition.
The voltage sensor can acquire the voltage information of each monomer in real time, the current sensor can acquire the charging and discharging current of the energy storage system in real time, the temperature sensor can monitor the temperature information of each monomer in real time, the acquisition of the running state parameters of the energy storage system is realized, and multiple temperatures can be controlled by adopting corresponding measures; the central processing unit of the main control module issues a command for controlling the fan to the central processing unit of the slave control module according to the state information collected by the central processing unit of the slave control module and according to a temperature threshold value, the fan cools the energy storage system, the central processing unit of the main control module calculates the residual electric quantity of the small energy storage system in real time by using a method of combining ampere-hour integral and open-circuit voltage, and simultaneously issues a balance control command to the central processing unit of the slave control module according to the information of the voltage difference between the monomers, and the central processing unit of the slave control module controls the balance module to act after receiving the command, so that the voltages of the monomers tend to be consistent, the wooden barrel effect.
Drawings
FIG. 1 is a schematic structural diagram of a main control module of an energy storage system on-line monitoring system for a non-contact-net-powered light rail vehicle;
FIG. 2 is a schematic structural diagram of a slave control module of an energy storage system online monitoring system for a catenary-free power supply light rail vehicle;
fig. 3 is a schematic structural diagram of a sensor module.
In the figure: 1-a central processing unit of a main control module, 2-a power supply module, 3-a display screen, 4-a data storage module, 5-a GPRS module, 6-a control center, 7-a cab and 8-magnetic coupling isolation;
9-a slave control module central processing unit, 10-a relay, 11-a fan and 13-a sensor module;
13-1-voltage sensor, 13-2-current sensor and 13-3-temperature sensor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention are clearly and completely described below, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, the utility model relates to a main control module structure of energy storage system online monitoring system embodiment for contact net power supply light rail vehicle does not have, include: the system comprises a main control module central processing unit 1 (STM32F407ZGT6), a power supply module 2(RP08-11005SAW), a display screen 3 (TJC4024T032_011RN), a data storage module 4(SD card), a GPRS module 5(4G DTU), a control center 6, a cab 7 and a magnetic coupling isolator 8(ADUM 6401). The power module 2, the display screen 3, the data storage module 4, the GPRS module 5 and the magnetic coupling isolator 8 are respectively connected with the central processing unit 1 of the main control module. The GPRS module 5 exchanges data with the control center 6 through a mobile network. The cab 7 is connected with the magnetic coupling isolator 8 through an external CAN bus, and the RS485 is used as a standby bus to be connected with the cab 7 and the magnetic coupling isolator 8.
Reference to fig. 2 is the utility model relates to a do not have contact net power supply light rail vehicle from control module structure of online monitored control system embodiment of energy storage system, include: the system comprises a control module central processing unit 9(STM32F103RCT6), a power module 2(RP08-11005SAW), relays 10(KS1-120DD), a fan 11(24V direct current fan), an equalization module 12 (controlling equalization resistors to achieve small current discharge of an energy storage system monomer), a sensor module 13 (a voltage sensor LTC6811-1, a current sensor LTC1000-SF, a temperature sensor DS18B20) and a magnetic coupling isolation 8(ADUM 6401). The slave control module central processor 9 is connected to the master control module central processor 1 of fig. 1 via an internal CAN bus. The power module 2, the relay 10 and the magnetic coupling isolator 8 are respectively connected with a slave control module central processing unit 9. The fan 11 is connected with the relay 10 by a signal wire. The equalization module 12 is connected to the magnetic coupling isolator 8 by a signal cable. The sensor module 13 is connected to the magnetic coupling isolator 8 by a signal cable.
(Central processing unit 1 of the master control module and central processing unit 9 of the slave control module are connected by an internal CAN bus.)
Referring to fig. 3, the sensor module 13 structure includes: a voltage sensor 13-1, a current sensor 13-2 and a temperature sensor 13-3. The voltage sensor 13-1, the current sensor 13-2 and the temperature sensor 13-3 are respectively connected with the magnetic coupling isolator 8 through an SPI bus, a signal cable and a single bus cable.
The utility model discloses a structure of principal and subordinate's formula CAN satisfy the running state information of the different objects of system simultaneous monitoring, from control module central processing unit collection state information, transmit to main control module central processing unit and accept main control module central processing unit's command through inside CAN bus, main control module central processing unit is through calculating and judging, give down temperature control and balanced control instruction from control module central processing unit, main control module central processing unit 1 all adopts STM32 microprocessor from control module central processing unit 9.
The power module 2 adopts a 110V auxiliary power supply of the whole vehicle to supply power, and the module provides required power for the central processing unit 1 of the main control module, the central processing unit 9 of the slave control module and the sensor module 13. The voltage sensor 13-1 is arranged at the anode end and the cathode end of the single body of the energy storage system in a wire connection ring mode, the single voltage sensor 13-1 can simultaneously acquire the voltage information of 12 single bodies, the module has good expansibility, can simultaneously monitor the voltage of a plurality of single bodies and can acquire the voltage information of each single body in real time, the current sensor 13-2 is arranged on a discharge leading-out cable of the energy storage system in an annular installation mode to monitor the total charge and discharge current of the energy storage system, and the temperature sensor 13-3 is arranged outside the single body of the energy storage system and can acquire the temperature information of the single body of the energy storage system in real time.
The voltage sensor 13-1, the current sensor 13-2 and the temperature sensor 13-3 pass through the magnetic coupling isolation 8, and the magnetic coupling isolation 8 is an isolation device which can realize effective isolation of high and low voltages, so that the system can be suitable for occasions with higher voltage levels, and the sampling precision and safety of the system and the accuracy of data transmission are improved.
The sensor module 13 communicates with the slave control module central processor 9 by adopting an SPI bus, a signal cable and a single bus cable respectively, the master control module central processor 1 processes and compares data, adopts a method of combining an ampere-hour integration method and an open-circuit voltage method, introduces temperature and aging compensation, the residual capacity of the energy storage system is obtained through calculation, data information is displayed on a display screen 3, whether a temperature control instruction is issued to a slave control module central processing unit 9 or not is judged according to a threshold value of the set monomer voltage difference by adopting a threshold value comparison strategy, utilize SPI bus connection data storage module 4 to preserve monitoring data simultaneously, the later stage staff of being convenient for looks over energy storage system information, takes reasonable maintenance mode to maintain energy storage system, and GPRS module 5 utilizes mobile communication network to upload control center 6 with data, makes things convenient for the operation part to know energy storage system's running state.
The central processing unit 1 of the main control module is isolated by a magnetic coupling 8, the magnetic coupling 8 is an isolation device and is used for improving the accuracy of data transmission, the information of the voltage, the total current, the residual electric quantity and the temperature of a single body of the energy storage system is uploaded to a driver cab 7 by adopting an external CAN bus, and the alarm is given to the overvoltage, the overcurrent, the low electric quantity and the overtemperature, a driver CAN take corresponding measures to protect the energy storage system, strictly control the charging and discharging electric quantity of the energy storage system, avoid the overcharge and the overdischarge of the energy storage system, and adopt an RS485 bus as a standby data transmission mode to avoid data redundancy in order to avoid; from control module central processing unit 9 mainly is responsible for gathering energy storage system's running state information, including monomer voltage, electric current and temperature information, the information of will gathering is transmitted to main control module central processing unit 1 through inside CAN bus, from balanced control command and the temperature control instruction that control module central processing unit 9 issued according to main control module central processing unit 1, control balanced module 12 respectively, balanced module 12 is for adopting resistance to carry out the module that the undercurrent discharged and reduce the voltage difference between the monomer, balanced module 12 CAN reduce the voltage difference between the monomer after the work, in order to improve energy storage system life.
The fan 11 is a 24V direct current fan and is arranged on the side face of the energy storage system box body, and after the temperature control instruction is received from the control module central processing unit 9, the control relay 10 drives the fan 11 to act so as to reduce the temperature of the energy storage system and improve the safety and the service life of the energy storage system.
The working process is as follows: when the light rail vehicle is powered on, the energy storage monitoring system enters system initialization, the system starts to work after the initialization is completed, the initial monomer voltage and box temperature information monitored by the sensor are transmitted to the main control module central processing unit 1 from the control module central processing unit 9 through the internal CAN bus, the main control module central processing unit 1 stores the data, and meanwhile, the state of charge of the energy storage system is calculated by adopting an open-circuit voltage method; when a vehicle starts to run, the slave control module central processing unit 9 monitors the running state of the energy storage system in real time and transmits data to the master control module central processing unit 1 in real time, the master control module central processing unit 1 displays information on the display screen 3 and calculates the charge state of the energy storage system by using an ampere-hour integral method, whether the temperature of the energy storage system exceeds a range is judged through threshold value comparison, if the temperature exceeds the range, the information is transmitted to the cab 7 and a heat management instruction is issued to the slave control module central processing unit 9, the slave control module central processing unit 9 controls the relay to act according to the instruction to drive the fan to work, the master control module central processing unit 9 stores state data and transmits the state data to the cab 7 so that a driver can know the state of the energy storage system conveniently, and the data are transmitted to the control center 6 in; when the vehicle enters the station and charges, still need monitor energy storage system's monomer voltage and box temperature information from control module central processing unit 9, after energy storage system charges and accomplishes, main control module central processing unit 1 compares voltage difference between the monomer with the threshold value, if exceed the threshold value, will give and issue balanced control instruction from control module central processing unit 9, from balanced module 12 according to this instruction, control balanced resistance realizes that energy storage system monomer undercurrent discharges to reduce voltage difference between the monomer, be convenient for improve energy storage system's life.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (3)
1. The utility model provides a no contact net power supply energy storage system on-line monitoring system for light rail vehicle which characterized in that includes: the system comprises a master control module central processing unit (1), a power supply module (2), a display screen (3), a data storage module (4), a GPRS module (5), a control center (6), a driver cab (7), a magnetic coupling isolator (8), a slave control module central processing unit (9), a relay (10), a fan (11), a balance module (12) and a sensor module (13);
the power module (2) is respectively connected with the master control module central processing unit (1), the slave control module central processing unit (9) and the sensor module (13) through power lines, the master control module central processing unit (1) is connected with the display screen (3) through a signal cable, and the data storage module (4) is connected with the master control module central processing unit (1) through an SPI bus; the exchange of main control module central processing unit (1) data with control center (6) is realized through GPRS module (5), GPRS module (5) adopts wireless connection with control center (6), main control module central processing unit (1) adopts outside CAN bus or RS485 data bus with data transfer to driver's cabin (7) through magnetic coupling isolation (8), it links to each other with main control module central processing unit (1) to adopt inside CAN bus from control module central processing unit (9), relay (10) are connected through signal cable with fan (11), relay (10) adopt signal cable to link to each other with from control module central processing unit (9), balanced module (12) are kept apart (8) through magnetic coupling and are adopted signal cable to be connected with from control module central processing unit (9), sensor module (13) are kept apart (8) through magnetic coupling and are connected with from control module central processing unit (9), the master control module central processing unit (1) is connected with the slave control module central processing unit (9) by an internal CAN bus.
2. The energy storage system online monitoring system for the catenary-free power supply light rail vehicle as claimed in claim 1, wherein the master control module central processing unit (1) and the slave control module central processing unit (9) are both STM32 microprocessors; the GPRS module (5) is 4gDTU, the GPRS module (5) is connected with the central processing unit (1) of the main control module through a signal line, and is used for uploading energy storage system data information and voltage balance information acquired by the central processing unit (1) of the main control module to a control center; the magnetic coupling isolator (8) is an isolator with the model of ADUM6401, and is used for isolating high and low voltages, improving the reliability of data transmission and simultaneously improving the acquisition precision and safety of the system; the fan (11) is a 24V direct current fan; the equalizing module (12) is a module which adopts a resistor to discharge small current to reduce the voltage difference between the single bodies.
3. The energy storage system online monitoring system for the catenary-free power supply light rail vehicle as claimed in claim 1, wherein the sensor module comprises a voltage sensor (13-1), a current sensor (13-2) and a temperature sensor (13-3); the voltage sensor (13-1) is connected with the slave control module central processing unit (9) by adopting an SPI bus, the current sensor (13-2) is connected with the slave control module central processing unit (9) by adopting a signal wire, and the temperature sensor (13-3) is connected with the slave control module central processing unit (9) by adopting a single bus cable.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021113009.0U CN213082960U (en) | 2020-06-16 | 2020-06-16 | Energy storage system online monitoring system for non-contact-net-powered light rail vehicle |
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| CN202021113009.0U CN213082960U (en) | 2020-06-16 | 2020-06-16 | Energy storage system online monitoring system for non-contact-net-powered light rail vehicle |
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| CN213082960U true CN213082960U (en) | 2021-04-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4087084A1 (en) * | 2021-05-07 | 2022-11-09 | ABB Schweiz AG | Energy storage system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4087084A1 (en) * | 2021-05-07 | 2022-11-09 | ABB Schweiz AG | Energy storage system |
| WO2022234503A1 (en) * | 2021-05-07 | 2022-11-10 | Abb Schweiz Ag | Energy storage system |
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Granted publication date: 20210430 |