CN108387846A - A kind of communications equipment room battery pack on-line monitoring equipment and monitoring method - Google Patents
A kind of communications equipment room battery pack on-line monitoring equipment and monitoring method Download PDFInfo
- Publication number
- CN108387846A CN108387846A CN201810112523.3A CN201810112523A CN108387846A CN 108387846 A CN108387846 A CN 108387846A CN 201810112523 A CN201810112523 A CN 201810112523A CN 108387846 A CN108387846 A CN 108387846A
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- Prior art keywords
- accumulator
- signal processing
- processing module
- battery pack
- voltage
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/389—Measuring internal impedance, internal conductance or related variables
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
Abstract
The invention discloses a kind of communications equipment room battery pack on-line monitoring equipment and monitoring methods, including：Hall current sensor, MOS switch, microcontroller and signal processing module；Hall current sensor is concatenated into the floating charge circuit of accumulator group and charger；N section accumulators connect to form n+1 node, and automatically controlled circuit and detection circuit are separately connected at each node；Automatically controlled circuit connects the drain electrode of MOS switch by load resistance, while being connect with signal processing module, and detection circuit is directly connected to signal processing module；Hall current sensor, the grid of MOS switch and signal processing module are connect with microcontroller respectively.Advantageous effect of the present invention：User can monitor the performance state of accumulator group, improve the reliability of system in real time in the case where simply installing and without disconnecting original connection, while remove error and the inaccuracy possibility of personnel's manual measurement from.
Description
Technical field
The invention belongs to battery detection technical field more particularly to a kind of communications equipment room battery pack on-line monitoring equipment and prisons
Survey method.
Background technology
Communications equipment room uses accumulator group conduct -48V stand-by power supplies, and under normal condition, battery backup is always at micro-
Electric current floating charge state.Because battery pack is connected using 24 section 2V accumulators, then wherein certain section accumulator aging or failure will cause
Stand-by power supply global failure, thus can periodic detection often save accumulator state it is most important.Communications equipment room stand-by power supply category
In system core equipment, then requires battery pack that there must not be the case where being disconnected with main line, that is, require battery pack online
Monitoring system can only be parallel to accumulator group.
Currently, widely used at home is regular manual inspection, measured using High Precision Multimeter by inspector
Often section accumulator terminal road voltage speculates accumulator status then in conjunction with previous measurement data.This method is the disadvantage is that need artificial dry
In advance, it is influenced by personnel's performance accuracy and error situation, there is also the differences of general-purpose meter accuracy and brand, while only relying on floating
The more difficult accurate determining battery performance of the roads Chong Duan voltage, and in the then waste of manpower of the reserve batteries regular visit such as remote substation.
Invention content
To solve the above-mentioned problems, the present invention provides a kind of communications equipment room battery pack on-line monitoring equipment and monitoring sides
Method, this method can monitor the performance state of accumulator group, notify dead battery at once in real time, while remove personnel's manual measurement from
Error and inaccuracy may.
To achieve the above object, the present invention uses following technical proposals, including：
The invention discloses a kind of communications equipment room battery pack on-line monitoring equipments, are stored for monitoring to be saved by n in communications equipment room
The accumulator group that battery is composed in series, including：Hall current sensor, MOS switch, microcontroller and signal processing module；
The Hall current sensor is concatenated into the floating charge circuit of accumulator group and charger；N saves accumulator series connection shape
At n+1 node, automatically controlled circuit and detection circuit are separately connected at each node；The automatically controlled circuit is connected by load resistance
The drain electrode of MOS switch, while being connect with signal processing module, the detection circuit is directly connected to signal processing module；It is described suddenly
You connect with microcontroller current sensor, the grid of MOS switch and signal processing module respectively.
Further, the signal processing module includes：The precision amplifier and accurate analog-digital converter being connected in series with；Institute
Accurate analog-digital converter is stated to connect with the microcontroller.
Further, often the end road voltage of section accumulator passes through the detection circuit arriving signal processing module, load electricity
Hinder both ends voltage pass through the automatically controlled circuit arriving signal processing module, signal processing module by the signal received amplify,
The microcontroller is sent to after being converted into digital signal.
Further, the microcontroller is connect with communication line module.
The invention discloses a kind of monitoring methods based on communications equipment room battery pack on-line monitoring equipment, including following step
Suddenly：
(1) n saves accumulator and connects to form n+1 node, acquires the opposite voltage between adjacent node, judges each node
Whether the wiring at place is normal；If normal, into next step, otherwise, report an error processing；
(2) the float charge voltage Uf [i] and floating current If [i] for often saving accumulator are determined；I=12 ..., n；
(3) the i-th road of sequential control MOS switch is connected, and the on load voltage Ur [i] of every section accumulator is obtained, according to load two
Side voltage obtains corresponding load current Ir [i], while recording the Hall current sensor digital sample values and being used as has load total
Electric current Ig [i]；The electric current for obtaining flowing through corresponding accumulator accordingly is Ib [i]=Ir [i]-Ig [i]；
(4) it using the electromotive force of every section accumulator and internal resistance as unknown quantity, is solved according to voltage-current relationship Simultaneous Equations
Often save the internal resistance Rb [i] and electromotive force E [i] of accumulator；
(5) after setting the frequency, statistics often saves the internal resistance Rb [i] of accumulator and the average value of electromotive force E [i], according to gained
To average value judge whether corresponding accumulator can continue to use.
Further, in the step (1), if the opposite voltage between adjacent node is between aV-bV, report is just
Beginning voltage is normal, otherwise, mistake is reported by the communication line module；Wherein, a, b are setting value.
Further, in the step (2), i+1 item detects the difference of the digital sample values of circuit and i-th detection circuit
Value is the float charge voltage of the i-th section accumulator；The digital sample values of Hall current sensor are floating current.
Further, in the step (4), it is specially according to voltage-current relationship Simultaneous Equations：
E [i]+If [i] * Rb [i]=Uf [i]；
E [i]-Ig [i] * Rb [i]=Ur [i].
Further, judge whether corresponding accumulator can continue to use according to obtained average value, specially：
If the average value of electromotive force E [i] is less than c times of corresponding accumulator rated value or the average value of internal resistance Rb [i] is big
In d times of corresponding accumulator rated value, then judge that the accumulator cannot be used continuously and send error reporting；Wherein, c, d are to set
Definite value.
Advantageous effect of the present invention：
The present invention provides a kind of communications equipment room battery pack on-line monitoring equipment and monitoring method, user in simple installation and
In the case of disconnecting original connection, the performance state of accumulator group can be monitored in real time, notifies dead battery at once,
It replaces failure reserve battery in time convenient for staff, improves the reliability of system, while removing the error of personnel's manual measurement from
And inaccuracy is possible, and reduce the inspection personnel cost of computer room monitoring from far-off regions.
Description of the drawings
Fig. 1 is the circuit diagram of communications equipment room battery pack on-line monitoring equipment of the present invention；
Wherein, 1, Hall current sensor, 2, detection circuit, 3, automatically controlled circuit, 4, precision amplifier, 5, accurate modulus turns
Parallel operation, 6, microcontroller, 7, communication line module, 8, charger, 9, accumulator group, 10, MOS switch, 11, load resistance, 12, number
Word line.
Specific implementation mode：
The invention will be further described below in conjunction with the accompanying drawings.
The invention discloses a kind of communications equipment room battery pack on-line monitoring equipments, as shown in Figure 1, including：Precision amplifier
4, accurate analog-digital converter 5, microcontroller 6, communication line module 7, MOS switch 10, load, Hall current sensor 1, detection line
Road 2, automatically controlled circuit 3 and digital circuit 12.
Hall current sensor 1 is installed to accumulator group 9 with 8 floating charge main line of charger, and signal output is connected to list
Piece machine 6, accumulator group 9 access monitoring device using two-wire parallel connection, wherein a line is automatically controlled circuit 3, are connected to MOS switch 10
And it is connected to precision amplifier 4, the drain electrode of MOS switch 10 all installation load resistance 11；Another line is detection circuit 2, connection
To precision amplifier 4, the output of precision amplifier 4 is connected to accurate analog-digital converter 5, and the output of accurate analog-digital converter 5 is connected to
Microcontroller 6, microcontroller 6 are connected to MOS switch 10 by digital circuit 12, and microcontroller 6 is connect with communication line module 7.
The purpose that detection circuit 2 is detached with automatically controlled circuit 3 is to eliminate relatively large load electric current in automatically controlled circuit 3 circuit is caused to produce
The inaccuracy given birth to excessive drop and generated.
Accumulator group 9 often saves accumulator terminal road voltage and reaches precision amplifier 4, amplified signal by detection circuit 2
Into accurate analog-digital converter 5, the microcontroller 6 is sent to after obtaining corresponding digital signals, meanwhile, the voltage of automatically controlled circuit 3
Represent 11 both ends pressure drop of load resistance, automatically controlled circuit 3 also passes through detection circuit 2 and reaches precision amplifier 4, amplified signal into
Enter accurate analog-digital converter 5, microcontroller 6 is sent to after obtaining corresponding digital signals.
In communications equipment room, 24 section lead plumbate battery strings ally the communists and have 25 nodes, and each node uses two-wire parallel connection access monitoring
Equipment walks high current wherein a line is automatically controlled circuit 3, and another line is that detection circuit 2 walks micro-current.
When start-up operation, the opposite voltage that monitoring device is tested between 25 nodes is to ensure that each node connection is correct, so
The opposite voltage between 25 nodes is recorded afterwards as float charge voltage, and record 1 data of Hall current sensor are as floating current；
Monitoring device utilizes internal MOS switch 10, applies certain resistive load to 24 section accumulator parallel connections respectively by electrical control lines, and
Electrical control lines both sides voltage and detection line both end voltage are tested respectively, while recording 1 data of Hall current sensor and being used as has load electric
Stream, electrical control lines both sides voltage divided by the sum of load resistance 11 and 10 internal resistance of MOS switch are to get having arrived application electric current, and detection line
Both end voltage is closed loop voltage, and finally, Simultaneous Equations solve each section lead plumbate internal resistance of cell, according to the internal resistance of cell and float charge voltage
Determine battery performance state.
The communications equipment room battery pack on-line monitoring method of the present invention is specific as follows：
(1) ensure that node connection is correct
It powers on, monitoring device arrives microcontroller 6 by detecting circuit 2 by precision amplifier 4 and accurate analog-digital converter 5
Sampled value tests the opposite voltage between 25 nodes, if adjacent node voltage is between 1.8V-2.4V, report is initial
Voltage is normal, continues step (2), otherwise reports mistake by communication line module 7；
(2) float charge voltage and floating current are recorded
The record of microcontroller 6 corresponds to the digital sample values of detection circuit 2, and adjacency channel difference as often saves the floating of accumulator
Charging voltage Uf [i], wherein i represent the 1 to 24th section accumulator, and record 1 digital sample values of Hall current sensor are as floating charging
Stream, is denoted as If [i]；
(3) on load voltage, load current are recorded, has load total current
6 the i-th road of sequential control MOS switch 10 of microcontroller is connected, while recording the digital sample values of corresponding detection circuit 2,
The on load voltage of every section accumulator is obtained, Ur [i] is denoted as, while recording the digital sample values of corresponding automatically controlled circuit 3, is loaded
11 both sides voltage of resistance, the voltage divided by 11 value of load resistance obtain corresponding load current Ir [i], while recording Hall current
1 digital sample values of sensor are denoted as Ig [i], then the electricity of corresponding accumulator can be flowed through at this time as there is load total current
Stream is Ib [i]=Ir [i]-Ig [i]；
(4) Simultaneous Equations solve the internal resistance of cell and electromotive force
The data obtained by step (2) and step (3) establish equation:
E [i]+If [i] * Rb [i]=Uf [i]；
E [i]-Ig [i] * Rb [i]=Ur [i]；
Wherein, it is unknown quantity that E [i], which is each accumulator electric gesture, and Rb [i] is that each accumulator internal resistance is unknown quantity, and i meanings are same
Step (2) can solve E [i] and Rb [i].
(5) judge battery status
Step (2) carries out primary, the average value of acquisition E [i] and Rb [i] after five statistics for every ten minutes to step (4), if
E [i] is less than 1.1 times or Rb [i] of corresponding accumulator rated value more than 2 times of corresponding accumulator rated value, then judges the electric power storage
Pond performance decline is not suitable for being continuing with, and mistake is reported by the communication line module 7.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (9)
1. a kind of communications equipment room battery pack on-line monitoring equipment saves what accumulator was composed in series for monitoring in communications equipment room by n
Accumulator group, which is characterized in that including：Hall current sensor, MOS switch, microcontroller and signal processing module；
The Hall current sensor is concatenated into the floating charge circuit of accumulator group and charger；N section accumulators connect to form n+1
A node is separately connected automatically controlled circuit and detection circuit at each node；The automatically controlled circuit connects MOS by load resistance and opens
The drain electrode of pass, while being connect with signal processing module, the detection circuit is directly connected to signal processing module；The Hall current
Sensor, the grid of MOS switch and signal processing module are connect with microcontroller respectively.
2. a kind of communications equipment room battery pack on-line monitoring equipment as described in claim 1, which is characterized in that the signal processing
Module includes：The precision amplifier and accurate analog-digital converter being connected in series with；The precision analog-digital converter and the microcontroller
Connection.
3. a kind of communications equipment room battery pack on-line monitoring equipment as described in claim 1, which is characterized in that often save accumulator
Road voltage is held to pass through the detection circuit arriving signal processing module, the voltage at load resistance both ends is arrived by the automatically controlled circuit
Up to signal processing module, the signal received is amplified, is converted into sending the monolithic after digital signal to by signal processing module
Machine.
4. a kind of communications equipment room battery pack on-line monitoring equipment as described in claim 1, which is characterized in that the microcontroller with
Communication line module connects.
5. a kind of monitoring method based on communications equipment room battery pack on-line monitoring equipment described in claim 1, which is characterized in that
Include the following steps：
(1) n saves accumulator and connects to form n+1 node, acquires the opposite voltage between adjacent node, judges at each node
Whether wiring is normal；If normal, into next step, otherwise, report an error processing；
(2) the float charge voltage Uf [i] and floating current If [i] for often saving accumulator are determined；I=12 ..., n；
(3) the i-th road of sequential control MOS switch is connected, and obtains the on load voltage Ur [i] of every section accumulator, according to load both sides electricity
It presses and obtains corresponding load current Ir [i], while recording the Hall current sensor digital sample values conduct to have load total current
Ig[i]；The electric current for obtaining flowing through corresponding accumulator accordingly is Ib [i]=Ir [i]-Ig [i]；
(4) it using the electromotive force of every section accumulator and internal resistance as unknown quantity, is often saved according to the solution of voltage-current relationship Simultaneous Equations
The internal resistance Rb [i] and electromotive force E [i] of accumulator；
(5) after setting the frequency, statistics often saves the internal resistance Rb [i] of accumulator and the average value of electromotive force E [i], according to obtained
Average value judges whether corresponding accumulator can continue to use.
6. a kind of monitoring method based on communications equipment room battery pack on-line monitoring equipment as claimed in claim 5, feature exist
In, in the step (1), if the opposite voltage between adjacent node is between aV-bV, report that initial voltage is normal, it is no
Then, mistake is reported by the communication line module；Wherein, a, b are setting value.
7. a kind of monitoring method based on communications equipment room battery pack on-line monitoring equipment as claimed in claim 5, feature exist
In in the step (2), the difference of the digital sample values of i+1 item detection circuit and i-th detection circuit is that the i-th section stores
The float charge voltage of battery；The digital sample values of Hall current sensor are floating current.
8. a kind of monitoring method based on communications equipment room battery pack on-line monitoring equipment as claimed in claim 5, feature exist
In in the step (4), being specially according to voltage-current relationship Simultaneous Equations：
E [i]+If [i] * Rb [i]=Uf [i]；
E [i]-Ig [i] * Rb [i]=Ur [i].
9. a kind of monitoring method based on communications equipment room battery pack on-line monitoring equipment as claimed in claim 5, feature exist
In judging whether corresponding accumulator can continue to use according to obtained average value, specially：
If the average value of electromotive force E [i] be less than the average value of c times of corresponding accumulator rated value or internal resistance Rb [i] more than pair
Answer accumulator rated value d times then judges that the accumulator cannot be used continuously and send error reporting；Wherein, c, d are setting
Value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810112523.3A CN108387846A (en) | 2018-02-05 | 2018-02-05 | A kind of communications equipment room battery pack on-line monitoring equipment and monitoring method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810112523.3A CN108387846A (en) | 2018-02-05 | 2018-02-05 | A kind of communications equipment room battery pack on-line monitoring equipment and monitoring method |
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| CN108387846A true CN108387846A (en) | 2018-08-10 |
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| CN201810112523.3A Pending CN108387846A (en) | 2018-02-05 | 2018-02-05 | A kind of communications equipment room battery pack on-line monitoring equipment and monitoring method |
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| CN105403842A (en) * | 2015-12-07 | 2016-03-16 | 高新兴科技集团股份有限公司 | Method for measuring internal resistance of storage battery by repeated discharging |
| CN105576765A (en) * | 2016-02-04 | 2016-05-11 | 惠州市蓝微新源技术有限公司 | Voltage acquisition circuit for multiple batteries |
-
2018
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1451972A (en) * | 2002-04-19 | 2003-10-29 | 中国石油天然气股份有限公司 | UPS cell on-line monitoring method and device |
| CN101207296A (en) * | 2006-12-18 | 2008-06-25 | 日产自动车株式会社 | Abnormality diagnostic device |
| JP2012208027A (en) * | 2011-03-30 | 2012-10-25 | Gs Yuasa Corp | Method for diagnosing deterioration of battery pack |
| CN103227489A (en) * | 2013-04-02 | 2013-07-31 | 珠海瓦特电力设备有限公司 | Active type management method and system of valve-regulated sealed lead acid storage battery pack |
| CN203811683U (en) * | 2013-11-29 | 2014-09-03 | 国家电网公司 | Device for on-line testing of internal resistance of storage battery |
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