CN108462218B - Storage battery online monitoring system and method thereof - Google Patents
Storage battery online monitoring system and method thereof Download PDFInfo
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Abstract
The invention discloses a storage battery on-line monitoring system and a method thereof, wherein the system comprises a battery detection unit which is connected in parallel on a storage battery and generates and sends out a detection signal; the current sampling unit is electrically connected on the storage battery pack and generates and sends out a sampling signal; the centralized monitoring unit is in electric signal connection with the battery detection unit and the current sampling unit and is used for determining battery state data of the storage battery and sending out a detection signal, a sampling signal and the battery state data; the field display unit, the data export unit and the upper computer monitoring unit are connected with the centralized monitoring unit through electric signals; the networking routing unit is connected with the centralized monitoring unit and the remote monitoring network electric signals, the centralized monitoring unit sends battery state data to the remote monitoring network, and monitoring personnel of the remote monitoring center can acquire the battery state data through the remote monitoring network, so that the storage battery can be remotely monitored without setting polling personnel to manually poll.
Description
Technical Field
The invention relates to the technical field of storage battery monitoring, in particular to an online storage battery monitoring system and method.
Background
The backup power system composed of the storage battery and the storage battery monitoring system is used as an important component of the power system, plays a key role in storing electric energy, dealing with power grid abnormity and special working conditions and maintaining normal operation of the system, and is the last line of defense in the field of high-reliability electric energy guarantee.
The storage battery monitoring system in the prior art can only detect the storage battery in real time on line, monitors, displays and records the voltage of the battery pack, the charging and discharging current, the voltage of each monomer and the internal resistance of each monomer when the storage battery monitoring system operates, can configure the temperature, the connection resistance between batteries and the connection resistance between columns, the total voltage of the batteries, the operating environment temperature or the surface temperature of the storage battery, displays the temperature, the total voltage of the batteries and the operating environment temperature or the surface temperature of the storage battery for the patrol staff who patrol the storage battery through the display screen, and is convenient.
However, the storage battery monitoring system in the prior art cannot transmit the acquired data to the remote monitoring center in real time through networking, and inspection staff need to be arranged to perform manual inspection, so that the convenience of the storage battery monitoring system is still to be improved.
Disclosure of Invention
The technical problem solved by the technical scheme of the invention is as follows: the storage battery monitoring system in the prior art cannot realize networking and transmit acquired data to a remote monitoring center in real time, and inspection staff need to be arranged to carry out manual inspection, so that the convenience of the storage battery monitoring system is to be improved.
In order to achieve the above object, the present invention provides an online storage battery monitoring system, which includes:
the battery detection unit is connected in parallel to the storage battery and is used for acquiring the voltage, the temperature and the internal resistance of each storage battery in the storage battery pack, generating and sending out a detection signal;
the current sampling unit is electrically connected on the storage battery pack and used for collecting the charging current and the discharging current of the storage battery pack, generating and sending out a sampling signal;
the centralized monitoring unit is electrically connected with the battery detection unit and the current sampling unit, and is used for receiving the detection signals and the sampling signals, calculating the internal resistance of each storage battery and the total internal resistance of the storage battery pack by using a set calculation method of an alternating current injection method, determining the battery state data of the storage batteries according to the internal resistance reference table according to the internal resistance and the total internal resistance, and sending the detection signals, the sampling signals and the battery state data outwards;
the field display unit is electrically connected with the centralized monitoring unit and is used for displaying the detection signal, the sampling signal and the battery state data of a single storage battery pack on the field;
the data export unit is in electric signal connection with the centralized monitoring unit and is used for receiving, exporting and printing the detection signal, the sampling signal and the battery state data on site;
the upper computer monitoring unit is in electrical signal connection with the centralized monitoring unit and is used for receiving and displaying the detection signals, the sampling signals and the battery state data of the plurality of storage battery packs;
and the networking routing unit is connected with the centralized monitoring unit and the remote monitoring network electric signals and is used for connecting the centralized monitoring unit into the remote monitoring network, and the centralized monitoring unit sends the battery state data to the remote monitoring network.
Through the technical scheme, the battery detection unit is used for detecting the voltage, the temperature and the internal resistance of a single storage battery, the current sampling unit is used for detecting the charging current and the discharging current of the storage battery pack, the battery detection unit and the current sampling unit send the collected signal data to the centralized monitoring unit, the centralized monitoring unit processes the signal data according to the calculation steps stored in the centralized monitoring unit and obtains battery state data, meanwhile, the battery state data are sent to a remote monitoring network through the networking routing unit, monitoring personnel of the remote monitoring center can acquire the battery state data through the remote monitoring network, remote monitoring of the storage battery is achieved, inspection personnel do not need to be arranged to conduct manual inspection, the system is convenient and practical, meanwhile, when maintenance personnel conduct routine maintenance on the storage battery, the data export unit can be used for exporting the battery state data, and convenient for the maintenance personnel to analyze and evaluate the state of the storage battery on site after acquiring the data of all The field display unit can also be used for displaying the battery state data of the storage battery, so that the single storage battery or the storage battery pack can be analyzed and evaluated conveniently; the upper computer monitoring unit displays the battery state data of the storage battery packs, and maintenance staff can conveniently inspect the storage battery packs in batches.
Furthermore, the power-on signal of the centralized monitoring unit is connected with an RJ45 interface and is in electric signal connection with the networking routing unit through the RJ45 interface, and a TCP/IP protocol is arranged in the networking routing unit to carry out network communication with the remote monitoring network.
Through the technical scheme, the RJ45 interface is one of information socket connectors in a wiring system, is commonly known as a standard 8-bit modular interface, and consists of a plug (a connector and a crystal head) and a socket (a module), so that the connector is low in cost, and the plug and the socket do not need to damage or stop any original connection structure, so that the advantages of no signal attenuation and convenience in connection are realized; meanwhile, the TCP/IP protocol is an open protocol standard, all people can try out the protocol free of charge, and the TCP/IP protocol is independent of hardware and an operating system, so that the software cost of the system is reduced.
Further, the centralized monitoring unit with battery detecting element and signal connection has the RS485 bus between the current sampling unit, the RS485 bus is used for realizing the centralized monitoring unit with between the battery detecting element and the centralized monitoring unit with signal transmission between the current sampling unit.
Through the technical scheme, the RS485 adopts a half-duplex working mode to support multipoint data communication, the network topology generally adopts a bus type structure with matched terminals, namely, a bus is adopted to serially connect all nodes, an annular or star network is not supported, the RS485 adopts balanced transmission and differential reception, so that the RS485 has the capability of inhibiting common mode interference, and the bus transceiver has high sensitivity and can detect the voltage as low as 200mv, so that transmission signals can be recovered beyond kilometers.
Further, the data derivation unit includes:
the leading-in subunit is internally provided with a report generator, is electrically connected with the centralized monitoring unit and is used for receiving the detection signal, the sampling signal and the battery state data, recording the detection signal, the sampling signal and the battery state data into a data report by using the report generator and sending the data report outwards;
and the output subunit is internally provided with a USB interface, is electrically connected with the lead-in subunit, and is used for receiving the data report and outputting the data report through the USB interface.
According to the technical scheme, the lead-in subunit records the obtained detection signals, sampling signals and battery state data, the report generator is used for forming a data report, and the output subunit is used for outputting the data report, so that maintenance staff can analyze and evaluate the detection signals, the sampling signals and the battery state data in a time domain conveniently; the USB interface can be hot-plugged, so that when a user uses the external device, the USB interface does not need to be powered off and then on, and the USB interface has the advantages of convenience in carrying, unified standard and capability of being connected with a plurality of devices, and is convenient for maintenance staff to output data reports.
Further, the device charge absorption unit is electrically connected with the battery detection unit and the current sampling unit and is electrically connected with the centralized monitoring unit, the centralized monitoring unit sends an absorption signal to the device charge absorption unit, and the device charge absorption unit receives the absorption signal and absorbs residual charges on the battery detection unit and the current sampling unit;
the device charge draining unit includes: the relay switch K1 with a normally closed contact, the winding resistor R1 with an inductor, a reed switch K2 and a discharge resistor R2, the axial lead of the winding resistor R1 faces the reed switch K2, one end of the relay switch K1 is electrically connected with the battery detection unit and the positive pole of the current sampling unit, the other end of the relay switch K1 is grounded through the winding resistor R1, the other end of the relay switch K1 is electrically connected with one end of the reed switch K2, and the other end of the reed switch K2 is grounded through the discharge resistor R2;
relay switch K1's control end with centralized monitoring unit signal of telecommunication connection works as after centralized monitoring unit circular telegram, centralized monitoring unit control relay switch K1's control end makes its normally closed contact disconnection, works as after centralized monitoring unit outage, centralized monitoring unit does not control relay switch K1's control end, relay switch K1's normally closed contact is closed.
Through the technical scheme, when the system is powered on, the centralized monitoring unit controls the relay switch K1 to make the normally closed contact of the relay switch K1 disconnected, the system works normally, when the system is powered off, if the device charge absorption unit does not exist, even if all external power is disconnected, there is a residual charge on the capacitance inside the device, there may be high voltages that endanger personal safety, therefore, the equipment needs to be left for a long enough time (the time is usually more than or equal to 10 min), the chassis of the equipment can be disassembled after the charge is released, at this time, after the charge absorbing unit of the equipment is arranged, the terminal of the centralized monitoring unit loses the control of the relay switch K1 to close the normally closed contact, residual charges in the equipment enter the ground through the relay switch K1 and the winding resistor R1, and the winding resistor R1 with the inductor can inhibit high-frequency harmonic waves and avoid irreversible damage of the high-frequency harmonic waves to the battery detection unit and the current sampling unit; if the current rising rate of the winding resistor R1 is too high, the winding resistor R1 generates a magnetic field to close the reed switch K2, and the discharge resistor R2 connected to the loop limits the current to play the roles of discharging and protecting equipment.
In order to solve the technical problem, the technical scheme of the invention also provides an online storage battery monitoring method, which comprises the following steps:
acquiring the voltage, the temperature and the internal resistance of each storage battery in real time;
collecting the charging current and the discharging current of a storage battery pack;
transmitting the voltage, the temperature, the internal resistance, the charging current and the discharging current to a centralized monitoring unit in an RS485 bus mode;
the centralized monitoring unit calculates the internal resistance of each storage battery and the total internal resistance of the storage battery pack by using a set calculation method of an alternating current injection method;
the centralized monitoring unit determines battery state data of the storage batteries according to the internal resistance of each storage battery and the total internal resistance of the storage battery pack according to an internal resistance reference table;
the centralized monitoring unit transmits the battery status data to a remote monitoring network using a TCP/IP protocol over an RJ45 interface.
Through above-mentioned technical scheme, remote monitoring center's control personnel accessible remote monitoring network acquires battery status data to the realization need not to set up the remote monitoring of battery and patrols and examines the staff and carry out the manual work and patrol and examine, convenient and practical, when maintenance staff carries out routine maintenance to the battery simultaneously, can derive battery status data, and the maintenance staff of being convenient for carries out analysis and aassessment to the state of battery.
Further, the centralized monitoring unit guides the battery state data into the mobile device through a USB interface.
Through the technical scheme, the USB interface equipment can be hot-plugged, the user does not need to shut down and restart the computer when using the external equipment, and meanwhile, the USB interface equipment also has the advantages of convenience in carrying, unified standard and capability of being connected with a plurality of equipment, and is convenient for maintenance staff to output data reports.
Further, the centralized monitoring unit imports the battery status data into the mobile device through a USB interface, and further includes:
drawing the battery state data into a coordinate report according to a time axis;
packaging the coordinate report into a portable document;
exporting the portable document.
According to the technical scheme, the acquired detection signals, sampling signals and battery state data are recorded, the report generator is used for forming the data report, and the output subunit is used for outputting the data report, so that maintenance staff can analyze and evaluate the detection signals, the sampling signals and the battery state data in a time domain conveniently.
The technical scheme of the invention at least comprises the following beneficial effects: the battery detection unit is used for detecting the voltage, the temperature and the internal resistance of a single storage battery, the current sampling unit is used for detecting the charging current and the discharging current of the storage battery pack, the battery detection unit and the current sampling unit send the collected signal data to the centralized monitoring unit, the centralized monitoring unit processes the signal data according to the calculation steps stored in the centralized monitoring unit and obtains battery state data, meanwhile, the battery state data is sent to a remote monitoring network through a network routing unit, a monitoring worker of a remote monitoring center can obtain the battery state data through the remote monitoring network, thereby realizing the remote monitoring of the storage battery, the manual inspection by an inspection worker is not needed, the system is convenient and practical, meanwhile, when the maintenance worker routinely maintains the storage battery, the data export unit can be used for exporting the battery state data, and the maintenance worker can conveniently analyze and evaluate the state of the storage battery on site after obtaining the data of all the storage batteries, the field display unit can also be used for displaying the battery state data of the storage battery, so that the analysis and evaluation of a single storage battery or a storage battery pack are facilitated; the upper computer monitoring unit displays the battery state data of the storage battery packs, and maintenance staff can conveniently inspect the storage battery packs in batches.
Drawings
FIG. 1 is a block diagram of a first embodiment of the present invention;
FIG. 2 is a block diagram of a data export unit according to an embodiment of the present invention;
FIG. 3 is a block diagram of the connection between a device charge draining unit and a centralized monitoring unit according to an embodiment of the present invention;
FIG. 4 is a circuit diagram of a charge draining unit according to an embodiment of the present invention;
FIG. 5 is a flowchart of a method according to a second embodiment of the present invention;
fig. 6 is a flowchart of a method of step S7 according to an embodiment of the present invention.
Reference numerals: 100. a battery detection unit; 200. a current sampling unit; 300. a centralized monitoring unit; 310. an RJ45 interface; 400. a field display unit; 500. a data derivation unit; 510. an import subunit; 511. a report generator; 520. an output subunit; 521. a USB interface; 600. an upper computer monitoring unit; 700. a networking routing unit; 800. a device charge draining unit; 900. and (5) remotely monitoring the network.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
In combination with the above inventive concept of the present invention, an online monitoring system for a storage battery, as shown in fig. 1 and 3, includes: the system comprises a battery detection unit 100, a current sampling unit 200, a centralized monitoring unit 300, an on-site display unit 400, a data export unit 500, an upper computer monitoring unit 600, a networking routing unit 700 and an equipment charge absorption unit 800.
The battery detection unit 100 may adopt a battery monitoring module in the prior art, and the battery detection unit 100 is connected in parallel to the storage battery and is electrically connected with the centralized monitoring unit 300, and is configured to collect voltage, temperature, and internal resistance of each storage battery in the storage battery pack, generate a detection signal, and send the detection signal to the centralized monitoring unit 300.
The current sampling unit 200 is electrically connected to the main outlet of the storage battery pack by using a current sensor electrically connected to the centralized monitoring unit 300, and is configured to collect the charging current and the discharging current of the storage battery pack, generate a sampling signal representing the charging current and the discharging current, and send the sampling signal to the centralized monitoring unit 300.
The centralized monitoring unit 300 can adopt a PLC, a DSP or a single chip microcomputer which are commonly used in the field of industrial control and contain a memory, and its internal programs are calling programs commonly used in the prior art, and the used functions are also calling functions known by those skilled in the art, the centralized monitoring unit 300 is electrically connected with the battery detection unit 100 and the current sampling unit 200 by RS485 buses, and the RS485 buses are used for realizing the electrical signal transmission between the centralized monitoring unit 300 and the battery detection unit 100 and between the centralized monitoring unit 300 and the current sampling unit 200. The RS485 adopts a half-duplex working mode to support multipoint data communication, the network topology generally adopts a bus type structure with matched terminals, namely, a bus is adopted to serially connect all nodes, and an annular or star network is not supported, the RS485 adopts balanced transmission and differential reception, so that the capability of inhibiting common mode interference is realized, and the bus transceiver has high sensitivity and can detect the voltage as low as 200mv, so that the transmission signal can be recovered beyond kilometers. After receiving the detection signal and the sampling signal, the centralized monitoring unit 300 calculates the internal resistance of each storage battery and the total internal resistance of the storage battery pack by using a set calculation method of an alternating current injection method, and determines the battery state data of the storage batteries according to the internal resistance and the total internal resistance according to an internal resistance reference table, wherein the battery state data comprises the internal resistance value, the capacity and the service life of the storage batteries. The internal resistance value of the storage battery in each time period in the life cycle of the storage battery recorded on the internal resistance reference table is inquired according to the internal resistance value measured by the storage battery. The ac injection method, i.e., the calculation method set by the ac injection method, is a method for measuring the internal resistance of the storage battery in the prior art, and reference may be made to the ac injection method described in the method and system for detecting the internal resistance of the battery on-line and dc disclosed in the invention patent with the publication number of CN 101477149B.
As shown in fig. 1, the centralized monitoring unit 300 is electrically connected to an RJ45 interface 310 and electrically connected to a networking routing unit 700 through an RJ45 interface 310, and the networking routing unit 700 is internally provided with a TCP/IP protocol for network communication with the remote monitoring network 900. The RJ45 interface 310 is a kind of information socket connector in the wiring system, it is a common name of standard 8-bit modular interface, its connector is made up of plug (connector, crystal head) and socket (module), the connector cost is low, the plug and socket do not need to damage or stop any connection structure of the original, so there is no attenuation of signal, the advantage of convenient connection; meanwhile, the TCP/IP protocol is an open protocol standard, all people can try out the protocol free of charge, and the TCP/IP protocol is independent of hardware and an operating system, so that the software cost of the system is reduced. The networking routing unit 700 may use a router in the prior art, the remote monitoring network 900 is a plurality of servers and clients constituting a local area network, and the centralized monitoring unit 300 sends a detection signal, a sampling signal and battery status data to the remote monitoring network 900 through the networking routing unit 700 by using a TCP/IP protocol through the RJ45 interface 310, so that it is convenient for employees at the clients to remotely check the data of the storage batteries on line.
The on-site display unit 400 may employ a display screen electrically connected to the centralized monitoring unit 300, which may display the detection signal, the sampling signal, and the battery status data of a single battery pack on site in real time, so as to facilitate the staff to carefully overhaul the single battery pack.
The data export unit 500 may be a storage computing device with a printing program and a USB interface 521, or a microcomputer. The data export unit 500 is electrically connected with the centralized monitoring unit 300 to receive, export and print the detection signal, the sampling signal and the battery status data on site. As shown in fig. 2, the data export unit 500 includes an import subunit 510 and an export subunit 520. The import subunit 510 is internally provided with a report generator 511, and the report generator 511 is a data recording program stored in advance, such as a WORD program, and can use a desktop-level COM component to operate the WORD program, such as drawing a chart, and export the file into a PDF document. The import sub-unit 510 is electrically connected to the centralized monitoring unit 300, and is configured to receive the detection signal, the sampling signal, and the battery status data, record the detection signal, the sampling signal, and the battery status data into a data report using the report generator 511, and send the data report to the output sub-unit 520. The output subunit 520 is an interface module having a USB interface 521 disposed therein, and is electrically connected to the import subunit 510 for receiving the data report and outputting the data report through the USB interface 521. The output data report can be convenient for maintenance personnel to carry out analysis and evaluation on detection signals, sampling signals and battery state data on the time domain, and the equipment with the USB interface 521 can be hot-plugged, and the user does not need to shut down and restart the machine when using external equipment, and simultaneously also has the advantages of convenient carrying, unified standard and capability of connecting a plurality of equipment, and the maintenance personnel can conveniently output the data report.
The upper computer monitoring unit 600 may adopt a microcomputer electrically connected with the centralized monitoring unit 300 through an RS485 bus for receiving and displaying the detection signals, the sampling signals, and the battery status data of the plurality of storage battery packs. The upper computer monitoring unit 600 can facilitate the analysis and evaluation of the states of a plurality of storage battery packs by staff.
The device charge absorption unit 800 is electrically connected with the battery detection unit 100 and the current sampling unit 200, and is electrically connected with the centralized monitoring unit 300, the centralized monitoring unit 300 sends an absorption signal to the device charge absorption unit 800, and the device charge absorption unit 800 receives the absorption signal to absorb residual charges on the battery detection unit 100 and the current sampling unit 200. As shown in fig. 4, the device charge absorption unit 800 includes a relay switch K1 having a normally closed contact, a winding resistor R1 having an inductance, a reed switch K2, and a discharge resistor R2, an axial line of the winding resistor R1 faces to the reed switch K2, one end of the relay switch K1 is electrically connected to the battery detection unit 100 and the positive electrode of the current sampling unit 200, the other end of the relay switch K1 is grounded through the winding resistor R1, the other end of the relay switch K1 is electrically connected to one end of the reed switch K2, and the other end of the reed switch K2 is grounded through the discharge resistor R2. The control end of the relay switch K1 is in electric signal connection with the centralized monitoring unit 300, when the centralized monitoring unit 300 is powered on, the centralized monitoring unit 300 controls the control end of the relay switch K1 to enable the normally closed contact of the relay switch to be disconnected, when the centralized monitoring unit 300 is powered off, the centralized monitoring unit 300 does not control the control end of the relay switch K1, the normally closed contact of the relay switch K1 is closed, and the relay switch K1 is switched on to discharge.
The working principle and the beneficial effects of the storage battery online monitoring system are as follows: the battery detection unit 100 is used for detecting the voltage, the temperature and the internal resistance of a single storage battery, the current sampling unit 200 is used for detecting the charging current and the discharging current of the storage battery, the battery detection unit 100 and the current sampling unit 200 send the collected signal data to the centralized monitoring unit 300, the centralized monitoring unit 300 processes the signal data according to the calculation steps stored in the centralized monitoring unit 300 and obtains battery state data, meanwhile, the battery state data are sent to the remote monitoring network 900 through the networking routing unit 700, monitoring personnel in the remote monitoring center can obtain the battery state data through the remote monitoring network 900, remote monitoring of the storage battery is achieved, inspection personnel do not need to be arranged to perform manual inspection, the system is convenient and practical, meanwhile, when the maintenance personnel perform routine maintenance on the storage battery, the battery state data can be derived through the data deriving unit 500, and the system is convenient for the maintenance personnel to analyze and evaluate the state of the storage battery on site after obtaining the data The field display unit 400 can also be used for displaying the battery state data of the storage battery, so that the single storage battery or the storage battery pack can be analyzed and evaluated conveniently; the upper computer monitoring unit 600 displays the battery state data of the plurality of storage battery packs, and is convenient for maintenance staff to perform batch inspection on the storage battery packs. In the process of maintenance by a maintenance worker, the faulty equipment needs to be closed to maintain the faulty equipment, and before the system is powered off and closed, the centralized monitoring unit 300 controls the relay switch K1 to open the normally closed contact of the relay switch K1, so that the system works normally. After the system is powered off and closed, if the device charge absorption unit 800 is not available, even if all external power is disconnected, the internal capacitor of the device still has residual charges, and high voltage which endangers personal safety still exists, so the device needs to be kept still for a long enough time (the time is usually more than or equal to 10 min), the chassis of the device can be disassembled after the charges are released, at this time, after the device charge absorption unit 800 is arranged, the terminal of the centralized monitoring unit 300 loses the control on the relay switch K1 to close the normally closed contact, the residual charges in the device enter the ground through the relay switch K1 and the winding resistor R1, and the winding resistor R1 with an inductor can inhibit high-frequency harmonics, so that the battery detection unit 100 and the current sampling unit 200 are prevented from being damaged irreversibly by the high-frequency harmonics; if the current rising rate of the winding resistor R1 is too high, the winding resistor R1 generates a magnetic field to close the reed switch K2, and the discharge resistor R2 connected to the loop limits the current to play the roles of discharging and protecting equipment.
Example two
In combination with the above inventive concept of the technical solution of the present invention, an online monitoring method for a storage battery, as shown in fig. 5, includes the following steps:
step S1: and acquiring the voltage, the temperature and the internal resistance of each storage battery in real time.
Step S2: and collecting the charging current and the discharging current of the storage battery pack.
Step S3: the voltage, temperature, internal resistance, and charging current and discharging current are transmitted to the centralized monitoring unit 300 through an RS485 bus.
Step S4: the centralized monitoring unit 300 calculates the internal resistance of each storage battery and the total internal resistance of the storage battery pack by using a set calculation method of an alternating current injection method.
Step S5: the centralized monitoring unit 300 determines the battery state data of the storage batteries according to the internal resistance of each storage battery and the total internal resistance of the storage battery pack according to an internal resistance reference table;
step S6: the centralized monitoring unit 300 transmits the battery status data to the remote monitoring network 900 through the RJ45 interface 310 using TCP/IP protocol.
Step S7: the centralized monitoring unit 300 imports the battery status data into the mobile device through the USB interface 521.
As shown in fig. 6, step S7 further includes step S71, step S72 and step S73.
Step S71: and drawing the battery state data into a coordinate report according to a time axis. The coordinate report and the data report in the first embodiment refer to the same file.
Step S72: and packaging the coordinate report into a portable document. The portable document is a PDF document, which is a common file format that can hold all fonts, formats, colors, and graphics of any source document regardless of the application and platform used to create the document, so that PDF documents are transmitted without concern for compatibility issues.
Step S73: the portable document is exported.
The monitoring personnel accessible remote monitoring network 900 of remote monitoring center acquires battery status data, thereby realize the remote monitoring to the battery, need not to set up and patrol and examine the staff and carry out the manual work and patrol and examine, convenient and practical, when maintenance personnel carry out routine maintenance to the battery simultaneously, use USB interface 521 to derive portable document, get off its detection signal who acquires, sampling signal and battery status data record and use report form generator 511 to form the data report form, use output subunit 520 output data report form at last, make things convenient for maintenance personnel to carry out analysis and aassessment to detection signal, sampling signal and battery status data on the time domain.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (4)
1. An online battery monitoring system, comprising:
the battery detection unit (100) is connected in parallel to the storage batteries and is used for collecting the voltage, the temperature and the internal resistance of each storage battery in the storage battery pack, generating and sending out a detection signal;
the current sampling unit (200) is electrically connected to the storage battery pack and is used for collecting the charging current and the discharging current of the storage battery pack, generating and sending out a sampling signal;
the centralized monitoring unit (300) is electrically connected with the battery detection unit (100) and the current sampling unit (200), and is used for receiving the detection signals and the sampling signals, calculating the internal resistance of each storage battery and the total internal resistance of the storage battery pack by using a setting calculation method of an alternating current injection method, determining the battery state data of the storage battery according to the internal resistance reference table according to the internal resistance and the total internal resistance, and sending the detection signals, the sampling signals and the battery state data outwards;
the field display unit (400) is electrically connected with the centralized monitoring unit (300) and is used for displaying the detection signal, the sampling signal and the battery state data of the single storage battery pack on the field;
the data export unit (500) is in electric signal connection with the centralized monitoring unit (300) and is used for receiving, exporting and printing the detection signal, the sampling signal and the battery state data on site;
the upper computer monitoring unit (600) is in electrical signal connection with the centralized monitoring unit (300) and is used for receiving and displaying the detection signals, the sampling signals and the battery state data of a plurality of storage battery packs;
the networking routing unit (700) is in electric signal connection with the centralized monitoring unit (300) and the remote monitoring network (900) and is used for accessing the centralized monitoring unit (300) into the remote monitoring network (900), and the centralized monitoring unit (300) sends the battery state data to the remote monitoring network (900);
further comprising:
the device charge absorbing unit (800) is electrically connected with the battery detection unit (100) and the current sampling unit (200) and is electrically connected with the centralized monitoring unit (300), the centralized monitoring unit (300) sends an absorbing signal to the device charge absorbing unit (800), and the device charge absorbing unit (800) receives the absorbing signal to absorb residual charges on the battery detection unit (100) and the current sampling unit (200);
the device charge draining unit (800) comprises: the relay switch K1 with a normally closed contact, the winding resistor R1 with an inductor, a reed switch K2 and a discharge resistor R2, wherein the axis of the winding resistor R1 faces the reed switch K2, one end of the relay switch K1 is electrically connected with the battery detection unit (100) and the positive electrode of the current sampling unit (200), the other end of the relay switch K1 is grounded through the winding resistor R1, the other end of the relay switch K1 is electrically connected with one end of the reed switch K2, and the other end of the reed switch K2 is grounded through the discharge resistor R2;
the control end of relay switch K1 with centralized monitoring unit (300) signal of telecommunication is connected, works as after centralized monitoring unit (300) circular telegram, centralized monitoring unit (300) control relay switch K1's control end makes its normally closed contact disconnection, works as after centralized monitoring unit (300) outage, centralized monitoring unit (300) do not control relay switch K1's control end, relay switch K1's normally closed contact is closed.
2. The system of claim 1, wherein the centralized monitoring unit (300) is electrically connected to an RJ45 interface (310) and electrically connected to the networking routing unit (700) through the RJ45 interface (310), and the networking routing unit (700) is internally provided with a TCP/IP protocol for network communication with the remote monitoring network (900).
3. The system according to claim 1, wherein an RS485 bus is electrically connected between the centralized monitoring unit (300) and the battery detection unit (100) and the current sampling unit (200), and the RS485 bus is used for realizing the electrical signal transmission between the centralized monitoring unit (300) and the battery detection unit (100) and between the centralized monitoring unit (300) and the current sampling unit (200).
4. The system according to claim 1, wherein the data derivation unit (500) comprises:
the import subunit (510) is internally provided with a report generator (511), is electrically connected with the centralized monitoring unit (300), and is used for receiving the detection signal, the sampling signal and the battery state data, recording the detection signal, the sampling signal and the battery state data into a data report by using the report generator (511), and sending the data report outwards;
and the output subunit (520) is internally provided with a USB interface (521), is electrically connected with the lead-in subunit (510), and is used for receiving the data report and outputting the data report through the USB interface (521).
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| CN201810084914.9A CN108462218B (en) | 2018-01-29 | 2018-01-29 | Storage battery online monitoring system and method thereof |
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| CN201956754U (en) * | 2011-03-25 | 2011-08-31 | 河南电力试验研究院 | Charger monitor and on-line charger monitoring device |
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| CN201234153Y (en) * | 2008-07-24 | 2009-05-06 | 苏州市龙源电力工程有限公司 | DC electric power cabinet controller |
| CN201956754U (en) * | 2011-03-25 | 2011-08-31 | 河南电力试验研究院 | Charger monitor and on-line charger monitoring device |
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