CN107797075A - A kind of circuit and method of distributed on-line measurement lead-acid accumulator monomer internal resistance - Google Patents
A kind of circuit and method of distributed on-line measurement lead-acid accumulator monomer internal resistance Download PDFInfo
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- CN107797075A CN107797075A CN201711223691.1A CN201711223691A CN107797075A CN 107797075 A CN107797075 A CN 107797075A CN 201711223691 A CN201711223691 A CN 201711223691A CN 107797075 A CN107797075 A CN 107797075A
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- monomer
- internal resistance
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- current
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- 239000000178 monomer Substances 0.000 title claims abstract description 82
- 238000005259 measurement Methods 0.000 title claims abstract description 46
- 239000002253 acid Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000007599 discharging Methods 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 239000000284 extract Substances 0.000 claims description 8
- 230000003321 amplification Effects 0.000 claims description 7
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 2
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- 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]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Tests Of Electric Status Of Batteries (AREA)
Abstract
The present invention provides a kind of circuit and method of distributed on-line measurement lead-acid accumulator monomer internal resistance, including a monomer collection module, a current acquisition module, several monomer modules and a Hall current sensor；The input of the Hall current sensor is serially connected in the charging and discharging circuit of lead-acid batteries, and output terminates at the input of the current acquisition module；The input of some monomer modules connects one to one respectively to be connected on the monomer collection module in the positive-negative polarity both ends of tested battery cell, output end；The monomer collection module is also connected with the output end of the current acquisition module.The present invention solves the problems, such as that existing on-line measurement internal resistance technology is disturbed by system ripple, and fielded system ripple is bigger, and interference is more serious, and the accuracy of measurement of accumulator internal resistance is higher.
Description
Technical field
The present invention relates to a kind of circuit and method for measuring lead-acid accumulator monomer internal resistance.
Background technology
UPS (Uninterruptible Power System, i.e. uninterrupted power source, is that one kind contains energy storage device, with inverse
Becoming uninterrupted power source of the device into the constant voltage constant frequency of chief component) system and high-voltage direct current be to be widely used in now
The important electric power standby safeguards system of all trades and professions, every profession and trade are used for the expense for safeguarding both system lead-acid batteries every year
It is high, and because safeguarding not in place, it is impossible to find in time and handle individual failure lead-acid accumulator, and caused standby is electric
Source failure accident occurs often.Ups system and the lead-acid accumulator of high-voltage direct current safeguard that there is many difficulties：
First, needing that battery cell quantity is more, and workload is big；
Second, system group terminal voltage is high, safeguard with certain danger, it is necessary to train qualified special maintenance personnel
Can carry out, maintenance it is with high costs；
Third, at present still without the convenient or good maintenance of means progress well.
Way commonplace at present is the installation online inspection instrument system of lead-acid accumulator monomer distribution formula, i.e., often section is tested
Battery cell assembles a battery data logging device module, real-time voltage, internal resistance and the pole for measuring single-unit lead-acid battery or watchcase
Temperature.And these data are aggregated into a monomer collection module by data/address bus, uniformly reported by monomer collection module
Backstage power ＆ environment supervision center.But current battery cell polling module is in measurement ups system or high-voltage direct current battery list
In vivo resistance when, suffer from the interference of ups system or the ripple current of high-voltage direct current, cause measurement internal resistance value with
Actual value deviation is bigger, cannot be used directly for judging the quality of battery, and it is timely not solve lead-acid accumulator potential faults
It was found that, the maintenance issues that solve in time.
The content of the invention
The technical problem to be solved in the present invention, it is to provide a kind of distributed on-line measurement lead-acid accumulator monomer internal resistance
Circuit and method, solve the problems, such as that existing on-line measurement internal resistance technology is afraid of the interference of system ripple, and fielded system ripple is bigger,
Interference is more serious, and the accuracy of measurement of accumulator internal resistance is higher.
What circuit of the present invention was realized in：A kind of circuit of distributed on-line measurement lead-acid accumulator monomer internal resistance, bag
Include a monomer collection module, a current acquisition module, several monomer modules and a Hall current sensor；The Hall current
The input of sensor is serially connected in the charging and discharging circuit of lead-acid batteries, and output terminates at the defeated of the current acquisition module
Enter end；The input of some monomer modules connects one to one in the positive-negative polarity both ends of tested battery cell respectively, defeated
Go out end to be connected on the monomer collection module；The monomer collection module is also connected with the output end of the current acquisition module.
Further, the monomer module all possesses a bandpass filtering amplifying circuit, for extracting tested battery cell
Ripple voltage, direct current and HFS are filtered out, and remaining signal is amplified into decades of times.
Further, the current acquisition module possesses a bandpass filtering amplifying circuit, for extracting tested battery cell
Ripple current, filter out direct current and HFS, remaining useful signal simultaneously amplifies several times.
What the inventive method was realized in：A kind of method of distributed on-line measurement lead-acid accumulator monomer internal resistance, is carried
It is serially connected in for foregoing circuit of the present invention, and by the input of the Hall current sensor in circuit with ups system or high straightening
In the charging and discharging circuit of the lead-acid batteries of streaming system；
The ups system or high-voltage direct current can be to the every of the lead-acid batteries of charging and discharging circuit in normal work
The tested battery cell of one section produces ripple current, the tested battery cell of each section is produced certain amplitude in its positive and negative end
Ripple voltage；
The ripple current of the tested battery cell of each section of Hall current sensor extraction gives the current acquisition module,
The current sample module extracts useful ripple current signal and is filtered amplification, and after its internal analog-digital converter conversion
It is sent to the monomer manifold module；The monomer module extracts useful line at tested battery cell positive-negative polarity both ends simultaneously
Wave voltage signal is filtered amplification, and is sent to the monomer manifold module after its internal analog-digital converter conversion；
For the monomer collection module before inner walkway work is started, reading first judges that the amplitude of ripple current signal is
The no requirement for meeting measurement internal resistance, if be unsatisfactory for, start the measurement internal resistance of single-unit pulse discharge method；If meeting to require,
Broadcast transmission starts measurement of correlation internal resistance order, makes the current acquisition module and all monomer modules while start to utilize ripple
Measure internal resistance flow.
Further, the ripple measurement internal resistance flow is：
The current acquisition module measurement is tested the ripple current of battery cell and calculates average line after continuing 3-5 seconds
Ripple electric current I；All monomer modules are responsible for being tested the ripple voltage of battery cell corresponding to measurement and calculated after continuing 3-5 seconds
Go out average ripple voltage Vn；
Then the data for calculating gained are passed through bus transfer by the current acquisition module and all monomer modules respectively
Onto the monomer collection module, the internal resistance Rn of each section monomer is calculated according to Rn=Vn/I by the monomer collection module.
The invention has the advantages that：
1st, the crucial part of the present invention is that the ripple signal using ups system or high-voltage direct current itself, due to lead
There is internal resistance in acid accumulator monomer, have ripple current to flow through the battery in itself, then corresponding line will be produced on its positive-negative polarity
Wave voltage, as long as measuring the average ripple voltage V and average ripple current I of the battery cell, this is just calculated using R=V/I
The internal resistance R of lead-acid accumulator monomer, it is reliable, safe, ingenious, convenient and swift without additional unnecessary driving source；
2nd, it is of the invention because lead-acid battery group is together in series by a battery cell successively, all tested battery cells
Ripple current size it is all equal, therefore only need ripple current module to carry out ripple current collection and measurement, it is all
Monomer module can start the respective ripple voltage of measurement simultaneously under the collaboration of monomer collection module, reach fast on-line measurement
Calculate the purpose of each section monomer internal resistance.
Brief description of the drawings
The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the electrical block diagram of the present invention.
Embodiment
Refer to shown in Fig. 1, the circuit of distributed on-line measurement lead-acid accumulator monomer internal resistance of the invention, including one single
Body collection module 101, a current acquisition module 102, several Hall current sensors 104 of monomer module 103 and one；It is described suddenly
You are serially connected in the charging and discharging circuit of lead-acid batteries the input of current sensor 104, and output terminates at the electric current and adopted
Collect the input of module 102；The input of some monomer modules 103 connects one to one in tested battery cell respectively
Positive-negative polarity both ends, output end are connected on the monomer collection module 101；The monomer collection module 101 is also connected with described
The output end of current acquisition module 102.
Wherein, the voltage of the tested battery cell can be 2V, 6V or 12V, and capacity can be from 50AH-3000AH not
Deng；
The function of above-mentioned each circuit module is as follows：
The Hall current sensor 104：Both DC current signal can be measured, ac current signal can also be measured,
That sensor 104 of electric current suddenly in the present invention is a high-precision Closed Loop Hall, is responsible in detection charging and discharging circuit
The ripple current signal of tested battery cell；
The current sample module 102：The inside modules include bandpass filtering amplifying circuit, will be from Hall sensor 104
The current signal transmitted extracts useful ripple current signal and is filtered amplification, and after its internal analog-digital converter conversion,
Average ripple current value I is calculated, monomer manifold module 101 is sent to by RS485 buses.
The monomer module 103：The inside modules also include bandpass filtering amplifying circuit, and tested battery cell B is positive and negative
Polarity both ends extract useful ripple voltage signal and are filtered amplification, and after its internal analog-digital converter conversion, calculate
Average ripple voltage value V, monomer manifold module 101 is sent to by RS485 buses.
The monomer collection module 101：For total activation module, the module is read first before inner walkway work is started
Judge the amplitude for the ripple current signal that current acquisition module 102 is sent, if meet the requirement of measurement internal resistance, if discontented
Foot, then start the measurement internal resistance of single-unit pulse discharge method.If meeting to require, monomer collection module 101 then passes through RS485 buses
Broadcast transmission starts measurement of correlation internal resistance order, and current acquisition module 102 and all monomer modules 103 will start utilization simultaneously
Ripple measures internal resistance flow.Now current module 103 is responsible for measurement ripple current, continues 3-5 seconds and calculates average ripple
Electric current I；All monomer modules 103 are responsible for the tested battery cell ripple voltage of measurement, continue 3-5 seconds and calculate average ripple
Voltage Vn.Most latter two module is respectively by data by RS485 bus transfers to monomer manifold 101, by monomer manifold
101 calculate the internal resistance Rn of each section monomer according to Rn=Vn/I.Completion internal resistance is online, safety, jamproof measurement target are wanted
Ask.
Based on the invention described above circuit, the method for distributed on-line measurement lead-acid accumulator monomer internal resistance of the invention, it is
The input of Hall current sensor 104 in circuit is serially connected in the lead acid storage battery with ups system or high-voltage direct current
In the charging and discharging circuit of pond group；The ups system or high-voltage direct current can be to the plumbic acids of charging and discharging circuit in normal work
Each section of batteries is tested battery cell and produces ripple current, makes the tested battery cell of each section due to its own internal resistance
In the presence of, can be in the ripple voltage of its positive and negative end generation certain amplitude, this just provides nature for the on-line measurement internal resistance of cell
Condition.
During the on-line measurement internal resistance of cell, the Hall current sensor 104 extracts the ripple of the tested battery cell of each section
Electric current gives the current acquisition module 102, and the current sample module 102, which is extracted useful ripple current signal and is filtered, puts
Greatly, and after its internal analog-digital converter conversion it is sent to the monomer manifold module 101；The monomer module simultaneously
103, which extract useful ripple voltage signal at tested battery cell positive-negative polarity both ends, is filtered amplification, and passes through its internal mode
The monomer manifold module 101 is sent to after number converter conversion；
The monomer collection module 101 reads the width for judging ripple current signal first before inner walkway work is started
Whether degree meets the requirement for measuring internal resistance, if be unsatisfactory for, starts the measurement internal resistance of single-unit pulse discharge method；Will if met
Ask, then broadcast transmission starts measurement of correlation internal resistance order, makes the current acquisition module 102 and all monomer modules 103 simultaneously
Start and utilize ripple measurement internal resistance flow.
The ripple measures internal resistance flow：
The measurement of current acquisition module 102 is tested the ripple current of battery cell and calculated after continuing 3-5 seconds flat
Equal ripple current I；All monomer modules 103 are responsible for being tested the ripple voltage of battery cell corresponding to measurement and continue the 3-5 seconds
Average ripple voltage Vn is calculated after clock；
Then the current acquisition module 102 and all monomer modules 103 respectively pass through the data for calculating gained total
Line is transferred on the monomer collection module 101, and each section list is calculated according to Rn=Vn/I by the monomer collection module 101
The internal resistance Rn of body.
Although the foregoing describing the embodiment of the present invention, those familiar with the art should manage
Solution, the specific embodiment described by us are merely exemplary, rather than for the restriction to the scope of the present invention, are familiar with this
The equivalent modification and change that the technical staff in field is made in the spirit according to the present invention, should all cover the present invention's
In scope of the claimed protection.
Claims (5)
- A kind of 1. circuit of distributed on-line measurement lead-acid accumulator monomer internal resistance, it is characterised in that：Collect mould including a monomer Block, a current acquisition module, several monomer modules and a Hall current sensor；The input of the Hall current sensor It is serially connected in the charging and discharging circuit of lead-acid batteries, output terminates at the input of the current acquisition module；It is some described The input of monomer module connects one to one respectively to be connected to described in the positive-negative polarity both ends of tested battery cell, output end On monomer collection module；The monomer collection module is also connected with the output end of the current acquisition module.
- 2. a kind of circuit of distributed on-line measurement lead-acid accumulator monomer internal resistance according to claim 1, its feature exist In：The monomer module all possesses a bandpass filtering amplifying circuit, for extracting the ripple voltage of tested battery cell, filters out straight Stream and HFS, and remaining signal is amplified into decades of times.
- 3. a kind of circuit of distributed on-line measurement lead-acid accumulator monomer internal resistance according to claim 1, its feature exist In：The current acquisition module possesses a bandpass filtering amplifying circuit, for extracting the ripple current of tested battery cell, filters out Direct current and HFS, remaining useful signal simultaneously amplify several times.
- A kind of 4. method of distributed on-line measurement lead-acid accumulator monomer internal resistance, it is characterised in that：There is provided described in claim 1 Circuit, and the input of the Hall current sensor in circuit is serially connected in the lead with ups system or high-voltage direct current In the charging and discharging circuit of acid accumulator group；The ups system or high-voltage direct current can be to each sections of the lead-acid batteries of charging and discharging circuit in normal work Tested battery cell produces ripple current, the tested battery cell of each section is produced the ripple of certain amplitude in its positive and negative end Voltage；The ripple current of the tested battery cell of each section of Hall current sensor extraction gives the current acquisition module, described Current sample module extracts useful ripple current signal and is filtered amplification, and is transmitted after its internal analog-digital converter conversion To the monomer manifold module；The monomer module extracts useful ripple electricity at tested battery cell positive-negative polarity both ends simultaneously Pressure signal is filtered amplification, and is sent to the monomer manifold module after its internal analog-digital converter conversion；The monomer collection module reads judge whether the amplitude of ripple current signal is full first before inner walkway work is started The requirement of foot measurement internal resistance, if be unsatisfactory for, start the measurement internal resistance of single-unit pulse discharge method；If meeting to require, broadcast Send and start measurement of correlation internal resistance order, make the current acquisition module and all monomer modules while start to measure using ripple Internal resistance flow.
- 5. a kind of method of distributed on-line measurement lead-acid accumulator monomer internal resistance according to claim 4, its feature exist In：The ripple measures internal resistance flow：The current acquisition module measurement is tested the ripple current of battery cell and average ripple electricity is calculated after continuing 3-5 seconds Flow I；All monomer modules are responsible for being tested the ripple voltage of battery cell corresponding to measurement and calculated after continuing 3-5 seconds flat Equal ripple voltage Vn；Then the data for calculating gained are passed through bus transfer to institute by the current acquisition module and all monomer modules respectively State on monomer collection module, calculate the internal resistance Rn of each section monomer according to Rn=Vn/I by the monomer collection module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711223691.1A CN107797075A (en) | 2017-11-29 | 2017-11-29 | A kind of circuit and method of distributed on-line measurement lead-acid accumulator monomer internal resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711223691.1A CN107797075A (en) | 2017-11-29 | 2017-11-29 | A kind of circuit and method of distributed on-line measurement lead-acid accumulator monomer internal resistance |
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| CN107797075A true CN107797075A (en) | 2018-03-13 |
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| CN201711223691.1A Pending CN107797075A (en) | 2017-11-29 | 2017-11-29 | A kind of circuit and method of distributed on-line measurement lead-acid accumulator monomer internal resistance |
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-
2017
- 2017-11-29 CN CN201711223691.1A patent/CN107797075A/en active Pending
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Address after: 350000 east of the five floor of building 4, M9511 Industrial Park, 18 Ma Jiang Road, Mawei District, Fuzhou, Fujian. Applicant after: FUZHOU FUGUANG ELECTRONICS Co.,Ltd. Address before: 350000 No. 8 Xingfa Road, Fuzhou Development Zone, Fuzhou City, Fujian province (FTA) Applicant before: FUZHOU FUGUANG ELECTRONICS Co.,Ltd. |
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Application publication date: 20180313 |