CN201540930U - Device for comprehensive measurement and control of battery pack - Google Patents
Device for comprehensive measurement and control of battery pack Download PDFInfo
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- CN201540930U CN201540930U CN2009202367749U CN200920236774U CN201540930U CN 201540930 U CN201540930 U CN 201540930U CN 2009202367749 U CN2009202367749 U CN 2009202367749U CN 200920236774 U CN200920236774 U CN 200920236774U CN 201540930 U CN201540930 U CN 201540930U
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Abstract
The utility model relates to a device for comprehensive measurement and control of a battery pack, which includes a main engine (1) and a plurality of measurement and control units (11) with the same structure and is characterized in that the main engine (1) includes a master control circuit (10), a floating current measuring circuit (2), a bus voltage measuring circuit (3), a charging module circuit (4), a discharging module circuit (5), a liquid crystal display (7) and a keyboard input circuit (8); the measurement and control units (11) are connected in parallel; each measurement and control unit includes a measurement and control circuit (14), a battery surface temperature measuring circuit (15), a voltage measuring circuit (12) at the battery end and a charging and discharging control circuit (13); and output ends of the charging module circuit (4) and the discharging module circuit (5) are respectively connected with the charging control input end and the discharging control input end of the charging and discharging control circuit (13). The utility model prolongs the service life of the battery pack, is widely applied to the battery detection in power plant, transformer station and telecommunication fields and is used for researching the battery operational state in the battery production enterprise and research institute.
Description
Technical field
The utility model relates to a kind of device that is used for comprehensive control of storage battery pack, is applicable to the fault detect of direct current system batteries.The checkout equipment technical field that belongs to direct current system.
Background technology
Batteries has been system's extensive uses such as electric power, communication as the important component part of DC power supply.At present, domestic 110kV and above electric pressure transformer station have mostly adopted the back-up source of batteries as DC power supply.According to incompletely statistics, the direct current system batteries of national on-line operation has the hundreds of thousands cover at least.
At present, the regular maintenance of a large amount of plumbic acid valve control batteries that use mainly contains following several means:
1, regularly examines discharge capacitor
Main maintenance service to storage battery is every 1-2 storage battery to be examined discharge capacitor.The nuclear discharge capacitor generally discharges with 10 hours discharge rates, and as the 100Ah storage battery, discharging current=100A.h/10.h=10A is with the 10A constant-current discharge.Though this method can be found behindhand battery and handle accordingly.But because this nuclear discharge capacitor interval 1-2 just does once, can't in time make accurate judgement to storage battery, therefore, cause some battery that after nuclear holds, just lost efficacy soon in time to be found, when examining appearance Deng next time, this storage battery for a long time dying, the normal operation of accumulators group stays long-time potential safety hazard.
2, regularly detect accumulator voltage
This method once was applied in accumulator voltage on-line testing equipment, monitor accumulator voltage in real time, but there is following shortcoming in this method: be on the one hand because particular product performance parameters is uneven, after operation a period of time, accumulator voltage measured value deviation is very big, at all can not be as a reference; Be because online detection instrument self operating current that has is excessive on the other hand, consumed the floating current of most of storage battery, make storage battery can not get replenishing of floating current.Therefore, such on-Line Voltage checkout equipment is abandoned by the user now basically.
Generally be to adopt manual patrol transformer station now, require to measure battery terminal voltage one by one and note down, the maintainer that will notify to electric voltage exception in time handles, owing to there is human factor, and generally enterprise does not have perfect supervision mechanism again, causes the every batteries voltage of the half-hearted measurement of some irresponsible tour personnel easily, but the fabrication data, cause the measurement state inaccurate, often the residual error storage battery.
3, heavy-current discharge is measured accumulator internal resistance
Many portable internal resistance test devices on the present market, its measuring principle is as follows mostly: to single storage battery heavy-current discharge in short-term, measure the changes delta V and the discharging current I of accumulator voltage, the internal resistance of calculating this battery according to formula R=Δ V/I, by repeatedly measuring, contrast the variation of front and back, judge the size of this internal resistance, judge the quality of battery.
It is quick, also more accurate that this method is measured accumulator internal resistance, but because and wiring, individual differences such as testing crew, data are quite different before and after causing, and judge the quality of storage battery with the variation of this internal resistance, and relevance is not enough, erroneous judgement usually occurs.
Also have and a kind ofly be, the whole big electric current of group storage battery is placed on line and measures the accumulator internal resistance method: at first, storage battery is disconnected from dc bus, current discharge resistance again has high input, measure the changing value Δ V1 of each accumulator voltage ... Δ Vn, reach discharging current I, can obtain the internal resistance Ri=Δ V1/I of battery i.
Though this method can overcome the difference of human factor and each wiring, the internal resistance parameter that records has comparativity preferably.But this method will insert switch in the storage battery loop, increased battery-driven unreliable factor; To often disconnect storage battery in addition, run counter to direct current system and can not disconnect the administrative provisions that storage battery moves, increase the risk of system's operation on the contrary!
Generally speaking, the repair and maintenance method of existing storage battery, not only time-consuming, effort, actual effect is limited, and detection method afterwards, promptly to wait storage battery to go wrong after, just can detect this fail battery, can not find behindhand battery in advance, and stop the deterioration of storage battery.
Need to prove, the storage battery of long-time running, because the difference of manufacturing process, characteristics such as its self discharge are very difficult in full accord, and present charger is to the whole boost charge of batteries, generally is that long-time running is at floating charge state after carrying out bulk charge in three months, the battery overcharge that this charge mode must cause, the battery that has are then owed charging.As everyone knows, the long-term mistake of storage battery, owing charging, all can produce influence greatly to the capacity of storage battery, the capacity and the useful life of reducing storage battery greatly be the one of the main reasons that storage battery does not reach manufacturing enterprise's guideline life.
The utility model content
The purpose of this utility model is for a kind of device with comprehensive control of storage battery pack is provided.
The purpose of this utility model can reach by taking following measure:
With the device of comprehensive control of storage battery pack, constitute by main frame and a plurality of same structure measurement and control unit, its design feature is:
1) main frame comprises governor circuit, floating current measuring circuit, bus voltage measurement circuit, charging module circuit, discharge module circuit, liquid crystal display and keyboard input circuit, and governor circuit respectively has an I/O port to be connected with the I/O end of floating current measuring circuit, bus voltage measurement circuit, charging module circuit, discharge module circuit, liquid crystal display and keyboard input circuit respectively;
2) described measurement and control unit is connected in parallel, each measurement and control unit comprises telemetry circuit, battery surface temperature measuring circuit, battery terminal voltage measuring circuit and charging, charge/discharge control circuit, and one of I/O port of telemetry circuit connects the I/O end of battery surface temperature measuring circuit, the two I/O ends by charging, charge/discharge control circuit connection battery terminal voltage measuring circuit of I/O port;
3) output of charging module circuit, discharge module circuit connects the charging control input end and the discharge control input end of charging, charge/discharge control circuit in the measurement and control unit respectively.
This device can be measured each accumulator meter surface temperature of batteries, when temperature surpasses design temperature, output temperature alarm signal; Measure each accumulator voltage of batteries, and set the peaked battery of terminal voltage, discharge, and, replenish electricity, make each accumulator voltage long-term stability in prescribed limit being lower than the battery of setting the terminal voltage minimum value to being higher than.When the discharge or additional electricity reach setting-up time, still overshoot scope of accumulator voltage, output voltage Threshold Crossing Alert signal; Measure the batteries charging and discharging currents, the charge/discharge capacity of calculating accumulator group; Measure the floating current of batteries, when floating current during less than setting, output storage battery open circuit alarm signal; Measure the batteries terminal voltage, when accumulator battery voltage is higher than maximum setting value or is lower than minimum setting value, output accumulator battery voltage Threshold Crossing Alert signal.
The purpose of this utility model can also reach by taking following measure:
A kind of embodiment that realizes the utility model purpose is: main frame also comprises main wireless communication line, and the I/O end of main wireless communication line is connected with an I/O port of governor circuit; Measurement and control unit also comprises the observing and controlling wireless communication line, and the I/O end of observing and controlling wireless communication line is connected with an I/O port of telemetry circuit.
Main frame can transmit control signal and receives data by main wireless communication line, and is corresponding with it, and measurement and control unit receives control signal and sends data-signal to main frame by the observing and controlling wireless communication line.
A kind of embodiment that realizes the utility model purpose is: main frame also comprises the upper machine communication circuit, and the I/O end of this upper machine communication circuit is connected with an I/O port of governor circuit.
A kind of embodiment that realizes the utility model purpose is: governor circuit is formed by connecting by control chip CPU, storage core place and peripheral resistance thereof, capacity cell; Telemetry circuit is formed by connecting by control chip CPU1, storage core place and peripheral resistance thereof, capacity cell.
A kind of embodiment that realizes the utility model purpose is: in the main frame, the charging module circuit comprises constant-current control circuit, constant-voltage control circuit and charging circuit, and the discharge module circuit comprises discharge circuit; In the measurement and control unit, charging, charge/discharge control circuit are made of charge switch KC, discharge switch KF; The input of constant-current control circuit, constant-voltage control circuit connects an output of governor circuit respectively, the output of constant-current control circuit, constant-voltage control circuit connects a control input end of charging circuit respectively, and the output of charging circuit is communicated with charging socket by charge switch KC; An output, input that the input of discharge circuit connects governor circuit connect the discharge socket by discharge switch KF.
A kind of embodiment that realizes the utility model purpose is: in the measurement and control unit, the battery terminal voltage measuring circuit is made of the multiplex arithmetric amplifying circuit, every road operational amplification circuit is made up of 10k/0.1% precision resistance R4, R5, R6, R7 and amplifier chip U respectively, and it is the low drift type structure of OP200 that chip U is amplified in described computing.
A kind of embodiment that realizes the utility model purpose is: in the measurement and control unit, the battery surface temperature measuring circuit comprises a plurality of accumulator meter surface temperature measuring circuits, each accumulator meter surface temperature measuring circuit is made up of 10k/0.1% precision resistance R1, R2, R3, R4, R5, R6, R7 and amplifier chip U, and described amplifier chip U is the low drift type structure of OP200.
A kind of embodiment that realizes the utility model purpose is: in the main frame, the floating current measuring circuit is made up of annular core, coil and modulation-demodulation circuit, exports 0-5V voltage VI1, VI2 respectively; Batteries terminal voltage measuring circuit is made up of divider resistance R1, R2, isolating amplifier circuit (9), output 0-5V voltage VM.
A kind of embodiment that realizes the utility model purpose is: in main frame and the measurement and control unit, the RFM12 wireless communication module is arranged all, and SCK, SDO, NIRQ, NSEL, SDI are inserted CPU.
The utlity model has following outstanding beneficial effect:
1, the utility model " the batteries parameters measuring and controlling apparatus " that provide not only can prolong batteries service life, reduces maintenance workload, finds trouble accumulator in advance, and can also prevent accidents generations such as storage battery open circuit, blast.Can be widely used in storage batterys such as power plant, transformer station, telecommunication and detect, also can be used for battery production enterprise, research institutions etc. to the research of storage battery operation conditions etc.Along with the storage battery raising in useful life, will significantly reduce the usage quantity of storage battery, equally also just reduced the pollution of used and scrapped battery to environment.
2, adopt the utility model that batteries is operated under the good operating mode, can effectively prolong the useful life of storage battery.Can solve the problem that the part battery temperature raises and to shorten in the useful life cause.To the accurate measurement of floating current, then can solve accident that storage battery open circuit causes etc.
Description of drawings
Fig. 1 is the utility model measure and control device schematic diagram.
Fig. 2 is the utility model charge-discharge modules and control circuit figure.
Fig. 3 is cell batteries terminal voltage measuring circuit figure in the utility model control module.
Fig. 4 is battery surface temperature measuring circuit figure in the utility model control module.
Fig. 5 is battery pack terminal voltage and battery pack current measuring circuit figure in the utility model main frame.
Fig. 6 is a wiring sketch of the present invention.
Fig. 7 is function menu of the present invention-parameter setting schematic diagram.
Fig. 8 is function menu of the present invention-out-of-limit schematic diagram of adjusting.
Fig. 9 is function menu of the present invention-the discharge and recharge schematic diagram of adjusting.
Figure 10 is function menu of the present invention-historical data schematic diagram.
Figure 11 is historical data 1 schematic diagram of the present invention.
Figure 12 is historical data 2 schematic diagrames of the present invention.
Figure 13 is that function menu-battery of the present invention withdraws from schematic diagram.
Figure 14 is function menu-clock of the present invention and service schematic diagram.
Embodiment
Specific embodiment 1:
Fig. 1 to Fig. 6 constitutes the specific embodiment 1 of special detection device that the utility model institute art is used for the comprehensive control of batteries fault.
With reference to Fig. 1, present embodiment is made of main frame 1 and a plurality of same structure measurement and control unit 11, main frame 1 comprises governor circuit 10, floating current measuring circuit 2, bus voltage measurement circuit 3, charging module circuit 4, discharge module circuit 5, liquid crystal display 7 and keyboard input circuit 8, and governor circuit 10 respectively has an I/O port to be connected with the I/O end of floating current measuring circuit 2, bus voltage measurement circuit 3, charging module circuit 4, discharge module circuit 5, liquid crystal display 7 and keyboard input circuit 8 respectively; Described measurement and control unit 11 is connected in parallel, each measurement and control unit comprises telemetry circuit 14, battery surface temperature measuring circuit 15, battery terminal voltage measuring circuit 12 and charging, charge/discharge control circuit 13, and one of I/O port of telemetry circuit 14 connects the I/O end of battery surface temperature measuring circuit 15, the two I/O ends by charging, charge/discharge control circuit 13 connection battery terminal voltage measuring circuits 12 of I/O port; The output of charging module circuit 4, discharge module circuit 5 connects the charging control input end and the discharge control input end of charging, charge/discharge control circuit 13 in the measurement and control unit 11 respectively.Main frame 1 also comprises main wireless communication line 6 and upper machine communication circuit 9, the I/O end of main wireless communication line 6 is connected with an I/O port of governor circuit 10, and the I/O end of upper machine communication circuit 9 is connected with an I/O port of governor circuit 10; Measurement and control unit 11 also comprises observing and controlling wireless communication line 16, and the I/O end of observing and controlling wireless communication line 16 is connected with an I/O port of telemetry circuit 14.
In the present embodiment, governor circuit 10 is formed by connecting by control chip CPU, storage core place and peripheral resistance thereof, capacity cell; Telemetry circuit 14 is formed by connecting by control chip CPU1, storage core place and peripheral resistance thereof, capacity cell.
With reference to Fig. 2, in the main frame 1, charging module circuit 4 comprises constant-current control circuit 4-1, constant-voltage control circuit 4-2 and charging circuit 4-3, and discharge module circuit 5 comprises discharge circuit 5-1; In the measurement and control unit 11, charging, charge/discharge control circuit 13 are made of charge switch KC, discharge switch KF; The input of constant-current control circuit 4-1, constant-voltage control circuit 4-2 connects an output of governor circuit 10 respectively, the output of constant-current control circuit 4-1, constant-voltage control circuit 4-2 connects the control input end of charging circuit 4-3 respectively, and the output of charging circuit 4-3 is communicated with charging socket by charge switch KC; An output, input that the input of discharge circuit 5-1 connects governor circuit 10 connect the discharge socket by discharge switch KF.
The control chip CPU of main frame 1 is by constant current control unit 4-1 and constant voltage control unit 4-2 among Fig. 2,4-3 controls to charging circuit, to satisfy the charging needs of different rated voltage storage batterys and different capabilities storage battery, whether export by charge switch KC control charging module 20, promptly whether the on/off of the electric-controlled switch K1～K8 by control charging module 20 is controlled charging module 20 and is exported.Described charging module 20 has the N piece, and N can be 1,2,3,4,5,6,7,8, or 9 to 100 integer.
Charge power supply among Fig. 2 among the charging circuit 4-3 is that 0-20V voltage is adjustable, and constant current control unit 4-1 control charging current is that 0-5A is adjustable, and current error is ± 1%.
Whether the control chip CPU of main frame 1 controls discharging current by discharge circuit 5-1 control among Fig. 2, to satisfy the discharge needs of different rated voltage storage batterys and different capabilities storage battery, export by discharge switch KF control discharge module.Discharge circuit 5-1 mainly is made of adjustable resistance RW.
Discharge circuit 5-1 constitutes 0-5A adjustable constant-flow discharge module among Fig. 2, and current error ± 1% can satisfy the discharge of 0-20V voltage storage battery.
In the present embodiment, the batteries that inserts measurement and control unit 11 has eight groups, every group eight storage batterys, is connected with charge-discharge modules 21 through discharge switch KF respectively.Arbitrarily storage battery needs charge or discharge, the K switch C or the KF of this storage battery correspondence closed, if charging, the KC that then closes again, if will discharge, KF then closes.
With reference to Fig. 3, in the measurement and control unit 11, battery terminal voltage measuring circuit 12 is made of the multiplex arithmetric amplifying circuit, and every road operational amplification circuit is made up of 10k/0.1% precision resistance R4, R5, R6, R7 and amplifier chip U respectively, and it is the low drift type structure of OP200 that chip U is amplified in described computing.
In the measurement and control unit 11, terminal voltage measuring circuit 12 has eight road accumulator voltage measuring circuits, be respectively 12-1,12-2,---, 12-8, measure eight storage battery ZL terminal voltages respectively.Described accumulator voltage measuring circuit 12 is made up of the low drift amplifier U1 of 10k/0.1% precision resistance R4, R5, R6, R7 and OP200.
Present embodiment realizes that the cell batteries terminal voltage measures, cell batteries terminal voltage measuring range 0-20V wherein, relative error ± 0.2%.
With reference to Fig. 4, in the measurement and control unit 11, battery surface temperature measuring circuit 15 comprises a plurality of accumulator meter surface temperature measuring circuits, be respectively 15-1,15-2,---, 15-8, measure eight storage battery ZL surface temperatures respectively.Each accumulator meter surface temperature measuring circuit is made up of 10k/0.1% precision resistance R1, R2, R3, R4, R5, R6, R7 and amplifier chip U, and described amplifier chip U is the low drift type structure of OP200.
Have eight accumulator meter surface temperature measuring circuits in the measurement and control unit, eight accumulator meter surface temperatures are measured in the variation of the temperature and resistance by measuring eight storage battery surfaces.Accumulator meter surface temperature measuring circuit is made up of the low drift amplifier U1 of 10k/0.1% precision resistance R1, R2, R3, R4, R5, R6, R7 and OP200.
Present embodiment can be realized the cell batteries surface temperature measurement, 0-100 ℃ of cell batteries surface temperature measurement scope, error ± 1 ℃.
With reference to Fig. 5, in the main frame 1, floating current measuring circuit 2 is made up of annular core 2-1, coil 2-2, modulation-demodulation circuit 2-3 and isolating amplifier circuit 2-4, exports 0-5V voltage VI1, VI2 respectively; Batteries terminal voltage measuring circuit is made up of divider resistance R1, R2, isolating amplifier circuit 2-4, output 0-5V voltage VM.
Storage battery floating current measuring range 0-3A, error ± 1%.
Accumulator cell charging and discharging current measuring range 0-300A, error ± 1%.
Accumulator voltage measuring range 0-250V, error ± 0.2%.
In the present embodiment, main frame 1 and measurement and control unit 11 have RFM12 wireless communication module 6 and 16 respectively, and SCK, SDO, NIRQ, NSEL, SDI are inserted CPU.300 meters of RFM12 wireless telecommunications coverages.
Introduce the function and the using method of present embodiment below in detail:
One, the function of present embodiment
1, can carry out observing and controlling to the 2V/6V/12V accumulator parameter
2, can carry out observing and controlling to 0-250V batteries parameter
3, can be to the too high warning of accumulator meter surface temperature
4, can be to the too high or too low warning of cell terminal voltage
5, can be to the too high or too low warning of batteries terminal voltage
6, can be to the too small warning of batteries floating current
7, may command cell batteries terminal voltage is in prescribed limit
Two, the using method of present embodiment
Use in places such as this device can be in the laboratory, transformer station, power plant and telecommunication base station, and at device panel mark button, per step operation all has detailed prompting at liquid crystal display screen, fully can be while learning usefulness, very convenient.Introduce concrete using method below in detail.
1, the mode of connection
With reference to Fig. 6, measurement and control unit 11 is inserted at the two ends of eight storage battery ZL1～ZL8, again the temperature and resistance output that is installed in above-mentioned eight storage battery surfaces is respectively inserted measurement and control unit 11; With discharging and recharging after terminal joins end to end of measurement and control unit, insert the terminal that discharges and recharges of main frame (1); The both positive and negative polarity of batteries M is inserted main frame 1 corresponding terminal; Pass the positive pole of batteries with measuring batteries floating current and charging and discharging currents instrument transformer 2-1,2-2, the corresponding terminal wiring that the output of current transformer 2-1,2-2 inserts main frame 1 gets final product.
Three, concrete test operation:
1, parameter setting
With reference to Fig. 7, with " function " key cursor is moved to function " 1 ", by " determining that " key is selected parameter setting, to electric pressure, patrol and pick up voltage, voltage is out-of-limit and alarms the resistance threshold value, is provided with by field requirement.Revise data with " increase ", " minimizing " key, after having revised, fall back on Previous Menu with " returning " key.Following associative operation similarly no longer repeats.
2, out-of-limit adjusting
With reference to Fig. 8, this function can be set the Threshold Crossing Alert setting value to cell batteries terminal voltage and surface temperature.If certain battery terminal voltage is lower than 2.13V or is higher than 2.38V, promptly compare with 2V battery minimum rated voltage 2.23V, be lower than 0.1V, or compare with 2V battery maximum rated voltage 2.28V, be higher than 0.1V, then this storage battery is mended charge or discharge.When certain battery temp surpasses 60 ℃, then send out the battery temp Threshold Crossing Alert.Charging current can be provided with 0-5A, adjusts among the figure to be 2A, and then charging current is stabilized in 2A, and precision of steady current is 0.5%.
3, discharge and recharge and adjust
With reference to 9, " discharging and recharging setting " function can be set with parameters such as " discharge capacities " " battery capacity ", " replenishing capacitance "." additional capacitance " is 10% of battery capacity with " discharge capacity " maximum setting value.Among Figure 12, battery capacity is 500AH, and then " additional capacitance " is 50AH with " discharge capacity " maximum.Generally adjust is that 5% battery capacity gets final product with interior.
If mending charge or discharge, certain battery reaches above-mentioned setting value, to stop to mend charge or discharge, at this moment the terminal voltage of battery also is in out-of-limit state, will export " voltage is out-of-limit " alarm signal, illustrate that there is defective in certain in this battery, need the operating maintenance personnel to in-situ processing.
Replenish in the electric process, reached the cell voltage lower limit if replenish electric battery terminal voltage, as 2V battery minimum rated voltage 2.23V, 25AH in the additional capacitance that reaches setting such as Figure 12 also will stop to replenish.
In the discharge process, if reached battery voltage limit by the discharge battery terminal voltage, as 2V battery maximum rated voltage 2.28V, 25AH in the discharge capacity that reaches setting such as Fig. 3 also will stop discharge.
4, historical data
With reference to Figure 10 to Figure 12, this device recording is also preserved that monomer battery voltage is out-of-limit, temperature is out-of-limit, is replenished relevant datas such as electricity and discharge: the out-of-limit historical data 1 of voltage in Figure 11, represent 20: 22 on the 8th August in 2009, the #3 cell voltage is out-of-limit, voltage is 2.532V, and 10 days 02: 31 August in 2009, voltage recovered normal.Temperature is out-of-limit out-of-limit similar with voltage.Replenish electric historical data 1 in Figure 12, represent 20: 36 on the 8th August in 2009, begin to replenish electricity to the #35 battery, 10: 36 on the 9th August in 2009 finished to replenish electricity, charging current is 1A, has replenished 14AH's for altogether the #35 battery.Discharge is similar with additional electricity.
5, battery withdraws from
With reference to Figure 13, this device allows part battery in service to withdraw from, to satisfy the needs of actual motion.As shown in figure 13, every section can be withdrawed from 6 joint storage batterys, if the numbering of storage battery is 000#, expression does not have storage battery out of service, in the I section, has two numberings not to be 000#, and promptly 005# and 008# represent that the 005# and the 008# storage battery of I section is out of service.
6, clock and service
With reference to Figure 14.Under this function, but the clock of modifier, by year, month, day, the time, the branch sequential update.Permanently effective, 24 hours cellular service phones (also providing on the route selection module) also are provided, in equipment running process, make things convenient for the user to get in touch with us at any time, normally move, accurately alarm and route selection with assurance equipment.
Four, application example analysis
1, testing program:
Testing scheme
With " batteries parameters measuring and controlling apparatus ", insert in transformer station's batteries of moving, the measured value of record batteries initial parameter, " batteries parameters measuring and controlling apparatus " operation is after one month, again batteries measured value of parameters and initial value are compared, the situation of change of analytical parameters is assessed the performance of " batteries parameters measuring and controlling apparatus ".
Test event
The batteries terminal voltage
The batteries floating current
The batteries charging and discharging currents
The cell batteries terminal voltage
The cell batteries surface temperature
Communication
The background scene situation
This station batteries is the German sunlight battery that puts into operation in August, 2004, rated voltage 2V, and the 110V system, for 54 batteries, rated capacitance 500AH uses the 0.1C current discharge in May, 2009, and discharge capacity reaches the regulation requirement.
Test result
Accumulator voltage is measured
Measurement result: initial value 120.8V, after January, 121.5V all meets the rules requirement.
B, batteries floating current
Measurement result: initial value 490mA, 505mA after January all meets the rules requirement.
C, batteries charging and discharging currents
Test result: at test period, bulk charge once, charging current is 50.2A, meets the rules requirement
D, communication
Test result: in moving one month, the communication fault-free, data send, and receive correct.
E, cell terminal voltage
Test result: initial measurement finds that following battery terminal voltage does not meet the rules requirement, as table 1.
Table 1
After January, all battery terminal voltages all meet rules and require 2.23～2.28V.
F, battery surface temperature
Test result: initial measurement finds that following battery temperature is higher, as table 2.
Table 2
| 5# | 8# | 21# | 35# | 38# | 43# |
| 28.1℃ | 30.2℃ | 32.1℃ | 30.8℃ | 33.5℃ | 31.6℃ |
After one month, the battery surface temperature, 5#, 8#, 21# battery surface temperature reach normally (24～25 ℃), but 35#, 38#, 43# are still higher, as table 3.
Table 3
| 35# | 38# | 43# |
| 31.2℃ | 32.3℃ | 31.8℃ |
Conclusion
A, by the higher or on the low side cell batteries of terminal voltage is discharged and recharged, all the cell batteries terminal voltages reach the rules requirement." batteries parameters measuring and controlling apparatus " can make batteries operate in kilter.
B, the too high storage battery of part surface temperature is arranged, along with after terminal voltage satisfies rules and require, surface temperature is also recovered normally, illustrates, owes charging, may cause the rising of battery surface temperature." batteries parameters measuring and controlling apparatus " can reduce the surface temperature of part storage battery, improves the useful life of storage battery.Other accumulator meter surface temperature rising reason is still waiting further research.
C, can accurately measure floating current, solve existing batteries floating current and measured inaccurate problem." batteries parameters measuring and controlling apparatus " can effectively prevent the storage battery open circuit.
D, wireless telecommunications meet design requirement.
The utility model is by the research to " batteries parameters measuring and controlling apparatus ", especially to the service condition of " batteries parameters measuring and controlling apparatus ", the research of environment for use, the design philosophy and the technology path of exploitation comprehensive control of storage battery pack system have been determined, the design of chamber, trial-production, debugging, calibration by experiment again, and on-the-spot test job, finished project demand, developed, developed " the batteries parameters measuring and controlling apparatus " that can carry out complete detection batteries.
If can be in time to crossing, owe rechargeable battery, discharge respectively in good time and replenish electricity, not only can make the good full capacity optimum Working of batteries maintenance, and can effectively improve the working life of storage battery, be the effective maintenance service of storage battery.
In addition, the bad change of storage battery generally all follows the surface temperature of storage battery to raise, measure the surface temperature of each storage battery in real time, also can understand the storage battery operation conditions, in time find the battery of temperaturing lifting abnormality, with the explosion accident that prevents that the storage battery thermal expansion from causing,, significant to improving the equipment safety operation level and reducing loss of life or personal injury.
Therefore, for the working condition of more accurate detection batteries,, when the cell batteries terminal voltage changes, regulate automatically simultaneously more comprehensively for operation maintenance provides batteries various operational factors.By detection to storage battery wall body temperature, analyze according to the wall body variation of temperature, judge, the battery that exceeds the terminal voltage excursion is charged and discharged automatically, electric treatment, thereby the detection that detects and handle batteries by above-mentioned parameter provides a more fully technological means, the working condition of batteries is among the overall monitor, thereby guarantee the stable of electrical network battery-operated state, reliably, solve and still perplexing the handling problem of the operation maintenance personnel of electric power system at present batteries, improve the power system safety and stability operation level, having crucial meaning, also is very necessary to the safe operation and the operational management of the direct current system of electric power system.One, the basic function of batteries parameters measuring and controlling apparatus
At first, make the technical scheme of batteries checkout equipment, develop the batteries parameters measuring and controlling apparatus, measure and control device must can satisfy following function:
1, monitors the terminal voltage of each storage battery in real time, the voltage Threshold Crossing Alert
2, monitor the surface temperature of each storage battery in real time, the temperature Threshold Crossing Alert
3, the cell batteries to overcharging discharges, and the accumulated discharge capacity
4, the cell batteries to owing to charge replenishes electricity, and the accumulative total charging capacity
5, monitor the batteries terminal voltage in real time, the voltage Threshold Crossing Alert
6, monitor storage battery floating charge electric current in real time, the Threshold Crossing Alert of floating charge electric current
7, monitor the accumulator cell charging and discharging electric current in real time, and the accumulative total charge/discharge capacity
8, plant failure alarm
9, adopt wireless telecommunications between measurement and control unit and the main frame
Five, need to determine the key technology of solution
1, the cell batteries terminal voltage is measured: 0-20V, relative error ± 0.2%
The rated voltage of existing batteries cell is generally 2V, 6V, 12V, and the float charge voltage of 12V battery is about 14.1V, and the terminal voltage that the measuring range of 0-20V can satisfy above-mentioned 3 kinds of batteries detects.Because cell terminal voltage overshoot value ± 1-2%, be defective, so certainty of measurement should be not less than ± 0.2% relative error, to guarantee that battery terminal voltage is in the setting scope.
2, cell batteries surface temperature measurement: 0-100 ℃, error ± 1 ℃
The life-span of accumulator meter surface temperature and storage battery is a negative correlation, and promptly temperature is high more, and the life of storage battery is short more.By relevant rules, the accumulator meter surface temperature must not surpass 35 ℃ in the running, and general battery room all is equipped with possesses automatic startup and thermostatically controlled air-conditioning, operates in 20-25 ℃ to guarantee storage battery, and storage battery has the longest life cycle like this.0-100 ℃ of measuring range, ± 1 ℃ of certainty of measurement can satisfy the needs of actual motion.
3, can satisfy 0-20V voltage, constant-current discharge module: 0-5A, current error ± 1%
For adapting to the discharge of 2V, 6V, 12V battery, discharge module should satisfy the discharge of 0-20V voltage.The 0-5A constant current can be satisfied different capabilities battery discharging needs.Current error ± 1% item can satisfy the needs of accumulated discharge capacity.
4,0-20V voltage is adjustable, constant current charge circuit module: 0-5A, current error ± 1%
For adapting to the charging of 2V, 6V, 12V battery, charging module voltage answers 0-20V adjustable.The 0-5A constant current can be satisfied the charging needs of different capabilities storage battery.Current error ± 1% item can satisfy the needs of accumulative total charging capacity.
5, accumulator voltage is measured: 0-250V ± 0.2%
The batteries terminal voltage generally has 24V, 48V, 110V, 220V etc., and the 0-250V measuring range can satisfy the measurement of the batteries terminal voltage of various voltages.
6, the storage battery floating current is measured: 0-3A ± 1%
The floating current of storage battery is generally 1mA/AH, and all in 2000AH, promptly floating current is in 2A for present most storage batterys, and the measuring range of 0-3A can meet the demands.
7, accumulator cell charging and discharging current measurement: 0-300A ± 1%
The charging current of storage battery is generally 1A/10AH, and all in 2000AH, promptly charging current is in 200A for present most storage batterys, and the measuring range of 0-300A can meet the demands.
8, wireless telecommunications: 300 meters
Use device described in the utility model, when temperature surpasses design temperature, output temperature alarm signal; Measure each accumulator voltage of batteries, and set the peaked battery of terminal voltage, discharge, and, replenish electricity, make each accumulator voltage long-term stability in prescribed limit being lower than the battery of setting the terminal voltage minimum value to being higher than.When the discharge or additional electricity reach setting-up time, still overshoot scope of accumulator voltage, output voltage Threshold Crossing Alert signal; Measure the batteries charging and discharging currents, the charge/discharge capacity of calculating accumulator group; Measure the floating current of batteries, when floating current during less than setting, output storage battery open circuit alarm signal; Measure the batteries terminal voltage, when accumulator battery voltage is higher than maximum setting value or is lower than minimum setting value, output accumulator battery voltage Threshold Crossing Alert signal.
Claims (9)
1. the device that is used for comprehensive control of storage battery pack is made of main frame (1) and a plurality of same structure measurement and control unit (11), it is characterized in that:
1) main frame (1) comprises governor circuit (10), floating current measuring circuit (2), bus voltage measurement circuit (3), charging module circuit (4), discharge module circuit (5), liquid crystal display (7) and keyboard input circuit (8), and governor circuit (10) respectively has an I/O port to be connected with floating current measuring circuit (2), bus voltage measurement circuit (3), charging module circuit (4), discharge module circuit (5), liquid crystal display (7) and the I/O end of keyboard input circuit (8) respectively;
2) described measurement and control unit (11) is connected in parallel, each measurement and control unit comprises telemetry circuit (14), battery surface temperature measuring circuit (15), battery terminal voltage measuring circuit (12) and charging, charge/discharge control circuit (13), and one of I/O port of telemetry circuit (14) connects the I/O end of battery surface temperature measuring circuit (15), the two I/O ends by charging, charge/discharge control circuit (13) connection battery terminal voltage measuring circuit (12) of I/O port;
3) output of charging module circuit (4), discharge module circuit (5) connects the charging control input end and the discharge control input end of charging, charge/discharge control circuit (13) in the measurement and control unit (11) respectively.
2. the device that is used for comprehensive control of storage battery pack according to claim 1 is characterized in that: main frame (1) also comprises main wireless communication line (6), and the I/O end of main wireless communication line (6) is connected with an I/O port of governor circuit (10); Measurement and control unit (11) also comprises observing and controlling wireless communication line (16), and the I/O end of observing and controlling wireless communication line (16) is connected with an I/O port of telemetry circuit (14).
3. the device that is used for comprehensive control of storage battery pack according to claim 1 is characterized in that: main frame (1) also comprises upper machine communication circuit (9), and the I/O end of this upper machine communication circuit (9) is connected with an I/O port of governor circuit (10).
4. the device that is used for comprehensive control of storage battery pack according to claim 1 is characterized in that: governor circuit (10) is formed by connecting by control chip CPU, storage core place and peripheral resistance thereof, capacity cell; Telemetry circuit (14) is formed by connecting by control chip CPU1, storage core place and peripheral resistance thereof, capacity cell.
5. the device that is used for comprehensive control of storage battery pack according to claim 1, it is characterized in that: in the main frame (1), charging module circuit (4) comprises constant-current control circuit (4-1), constant-voltage control circuit (4-2) and charging circuit (4-3), and discharge module circuit (5) comprises discharge circuit (5-1); In the measurement and control unit (11), charging, charge/discharge control circuit (13) are made of charge switch KC, discharge switch KF; The input of constant-current control circuit (4-1), constant-voltage control circuit (4-2) connects an output of governor circuit (10) respectively, the output of constant-current control circuit (4-1), constant-voltage control circuit (4-2) connects a control input end of charging circuit (4-3) respectively, and the output of charging circuit (4-3) is communicated with charging socket by charge switch KC; An output, input that the input of discharge circuit (5-1) connects governor circuit (10) connect the discharge socket by discharge switch KF.
6. the device that is used for comprehensive control of storage battery pack according to claim 1, it is characterized in that: in the measurement and control unit (11), battery terminal voltage measuring circuit (12) is made of the multiplex arithmetric amplifying circuit, every road operational amplification circuit is made up of 10k/0.1% precision resistance R4, R5, R6, R7 and amplifier chip U respectively, and it is the low drift type structure of OP200 that chip U is amplified in described computing.
7. the device that is used for comprehensive control of storage battery pack according to claim 1, it is characterized in that: in the measurement and control unit (11), battery surface temperature measuring circuit (15) comprises a plurality of accumulator meter surface temperature measuring circuits, each accumulator meter surface temperature measuring circuit is made up of 10k/0.1% precision resistance R1, R2, R3, R4, R5, R6, R7 and amplifier chip U, and described amplifier chip U is the low drift type structure of OP200.
8. the device that is used for comprehensive control of storage battery pack according to claim 1, it is characterized in that: in the main frame (1), floating current measuring circuit (2) is made up of annular core (2-1), coil (2-2) and modulation-demodulation circuit (2-3), exports 0-5V voltage VI1, VI2 respectively.
9. the device that is used for comprehensive control of storage battery pack according to claim 1 is characterized in that: batteries terminal voltage measuring circuit is made up of divider resistance R1, R2, isolating amplifier circuit (9), output 0-5V voltage VM; In main frame (1) and the measurement and control unit (2), be provided with RFM12 wireless communication module (3) separately, and SCK, SDO, NIRQ, NSEL, SDI are inserted CPU.
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| CN2009202367749U CN201540930U (en) | 2009-09-30 | 2009-09-30 | Device for comprehensive measurement and control of battery pack |
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| CN2009202367749U CN201540930U (en) | 2009-09-30 | 2009-09-30 | Device for comprehensive measurement and control of battery pack |
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| CN201540930U true CN201540930U (en) | 2010-08-04 |
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| CN101697376B (en) * | 2009-09-30 | 2012-01-25 | 广州市仟顺电子设备有限公司 | Method and special device for comprehensive control of storage battery pack |
| CN102565711A (en) * | 2011-12-02 | 2012-07-11 | 毛广甫 | Method for testing voltage condition of battery pack |
| CN103718054A (en) * | 2011-06-15 | 2014-04-09 | 米其林企业总公司 | Device for monitoring an electrical accumulation battery and associated method |
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| CN104908605A (en) * | 2015-06-15 | 2015-09-16 | 王凤成 | BMS (Battery Management System) decentralized detection and centralized management system of modularized lithium batteries |
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| CN102565711A (en) * | 2011-12-02 | 2012-07-11 | 毛广甫 | Method for testing voltage condition of battery pack |
| CN104407300B (en) * | 2014-11-25 | 2017-06-30 | 广东易事特电源股份有限公司 | UPS battery detection method |
| CN104407300A (en) * | 2014-11-25 | 2015-03-11 | 广东易事特电源股份有限公司 | UPS (uninterruptible power supply) battery detection method |
| CN104908605A (en) * | 2015-06-15 | 2015-09-16 | 王凤成 | BMS (Battery Management System) decentralized detection and centralized management system of modularized lithium batteries |
| CN105158701A (en) * | 2015-10-10 | 2015-12-16 | 穆良柱 | Secondary battery detection system and current balancing type control method |
| CN105158701B (en) * | 2015-10-10 | 2017-10-13 | 穆良柱 | Secondary cell detecting system and current-balance type control method |
| CN105759220A (en) * | 2016-04-08 | 2016-07-13 | 上海电机学院 | Real time detection system for uninterrupted power source battery |
| CN106299499A (en) * | 2016-08-31 | 2017-01-04 | 张家港市华扬冶金机械有限公司 | A kind of tamper set of cells |
| CN107132483A (en) * | 2017-04-28 | 2017-09-05 | 广东电网有限责任公司珠海供电局 | Storage batteries of transformer substation departs from dc bus monitoring system |
| CN108710083A (en) * | 2018-05-16 | 2018-10-26 | 中国兵器工业第五九研究所 | A kind of electronic product altitude environment adaptability checking test method |
| CN109870660A (en) * | 2019-03-25 | 2019-06-11 | 广西电网有限责任公司钦州供电局 | A kind of the open circuit detection system and method for battery pack |
| CN109870660B (en) * | 2019-03-25 | 2024-03-01 | 广西电网有限责任公司钦州供电局 | Open circuit detection system and method for battery pack |
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