CN105629177B - A kind of detection method of lead-acid accumulator green plate capacity - Google Patents
A kind of detection method of lead-acid accumulator green plate capacity Download PDFInfo
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- CN105629177B CN105629177B CN201511030056.2A CN201511030056A CN105629177B CN 105629177 B CN105629177 B CN 105629177B CN 201511030056 A CN201511030056 A CN 201511030056A CN 105629177 B CN105629177 B CN 105629177B
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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]
- G01R31/385—Arrangements for measuring battery or accumulator variables
- G01R31/387—Determining ampere-hour charge capacity or SoC
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Abstract
The invention discloses a kind of detection methods of lead-acid accumulator green plate capacity, include the following steps:(1) a piece of green plate to be measured and two panels opposite sex green plate are randomly selected and carries out combo, adjacent green plate keeps spacing, parallel to be placed in the first sulfuric acid solution, carry out channelization at;(2) after being melted into, the first sulfuric acid solution is substituted for the second sulfuric acid solution, charge and discharge are carried out to pole plate in such a way that positive plate connects electrode line, negative plate connection negative line, record discharge time t;(3) after cycle charge-discharge, the average discharge capacity of monolithic pole plate is calculated according to formula C=I × Δ t;Wherein I is discharge current, and Δ t is average discharge times.The present invention carries out charge and discharge in such a way that positive plate connects electrode line, negative plate connection negative line to pole plate, directly detects the voltage on positive/negative plate, testing result is more acurrate, reproducible.
Description
Technical field
The present invention relates to chemical property detection fields, and in particular to a kind of detection side of lead-acid accumulator green plate capacity
Method.
Background technology
Lead-acid accumulator has many advantages, such as because its is cheap, raw material is cheap and easy to get, and good safety, and wide
It is general to be applied in social production, life.Lead-acid accumulator mainly has positive and negative pole plate, the compositions such as partition board, electrolyte (sulfuric acid).Electricity
Pith of the positive and negative pole plate in pond as battery, performance have the performance of battery fairly obvious influence.
In process of production, (being internalized into) technique using Battery formation can be to avoid traditional at technique for lead-acid accumulator
Charging time present in (tank formation) is long, power consumption is big, acid mist is precipitated and the cleaning of pole plate consumes a large amount of acid and water.This
Sample has not only saved a large amount of water resource, also avoids pollution on the environment.But internal formation process is extremely unfavorable for pair
The management and control of pole plate quality.
It is green plate to be directly assembled into battery to be melted into again, and then obtain finished battery using Battery formation technique,
Therefore, green plate used in assembled battery will certainly generate battery performance certain influence.But there are no phases in industry at present
The international standard answered weighs the quality of green plate to detect, and only can just be added to the quality of green plate by finished battery performance
With assessment, there is serious hysteresis quality.Tank formation battery turns after being internalized into battery, in order to preferably ensure battery with two side terminals,
This also just forces cell production companies, more focuses on the control of green plate quality.Therefore, it is necessary to a kind of test methods in battery pack
The electrical property of pole plate can be analyzed before dress.
Pole plate capacity be lead accumulator design basic parameter, crowd well known to, pole plate capacity is restricted such as by several factors:
The amount of active material, its utilization rate, the porosity of pole plate, thickness, active material surface area etc. or even pole plate between distance,
The structure of grid, the density of electrolyte, the characteristic of partition board also have its influence.
Notification number is that the patent document of 102721930 B of CN discloses the test method of capacity of pole plate of lead-acid storage battery, first
First, a piece of pole plate and two panels opposite sex pole plate are randomly selected, is connected to become two positive one negative or pole that two negative ones are positive groups;Then, by pole
Group is placed in the sulfuric acid solution that density is 1.28g/ml and stands 20min;Finally, it is connected on charge-discharge machine by means of cadmium electrode
It discharges, the final voltage of positive plate is set as 2.0V, and the final voltage of negative plate is set as 0.25V, and record is put accordingly
The electric time calculates the capacity of monolithic pole plate.The test method of the invention just carries out electricity to the pole plate of lead-acid accumulator before assembling
Performance test is simultaneously analyzed, and ensures the electrical property of battery from source.The technical solution of the invention connects electrode line, cadmium according to positive plate
The form that electrode connects negative line connect with Electrical Discharge Machine and discharges, and since cadmium electrode stability is poor, is generated to testing result inclined
Difference influences the assessment to pole plate performance.
Invention content
In view of the deficiencies of the prior art, the present invention provides a kind of detection method of lead-acid accumulator green plate capacity,
Green plate is detected before battery assembling, tune is made in time if the pole plate chemical property detected does not meet design requirement
It is whole, ensure the consistency of lead-acid accumulator, solves the problems, such as that there are deviations for existing detection method testing result.
A kind of detection method of lead-acid accumulator green plate capacity, includes the following steps:
(1) it randomly selects a piece of green plate to be measured and two panels opposite sex green plate carries out combo, between adjacent green plate is kept
Away from, it is parallel to be placed in the first sulfuric acid solution, carry out channelization at;
(2) be melted into after, the first sulfuric acid solution is substituted for the second sulfuric acid solution, according to positive plate connection electrode line,
The mode that negative plate connects negative line carries out charge and discharge to pole plate, records discharge time t;
(3) after cycle charge-discharge, the average discharge capacity C of monolithic pole plate is calculated according to formula C=I × Δ t;
Wherein I is discharge current, and Δ t is average discharge times.
Detection method carries out on the basis of simulating lead-acid accumulator production application, testing result energy
Enough accurately reflect the performance of pole plate.By the difference of green plate capacity, to evaluate the quality of green plate quality.
The green plate of the present invention is negative or two positive one negative modes carry out combo according to one just two.Pole plate group channelization is at required
H2SO4Solution density is 1.05~1.3gcm-3, therefore, the first sulfuric acid solution density is 1.05~1.28gcm-3, more
Preferably, the first sulfuric acid solution density is 1.05gcm-3.Channelization is at later, charge and discharge of the analogous pole group in battery case
Journey, the H in battery case2SO4Solution density is 1.27~1.28gcm-3, therefore, the density of the second sulfuric acid solution is 1.28g
cm-3, more preferably, the density of the second sulfuric acid solution is 1.28gcm-3。
The lug of the green plate is through grinding process, and in hangers.On the one hand it can be melted into using hangers fixed polar plate
Position in slot, another aspect charge-discharge test instrument can directly be connect with hangers.
It avoids being in contact between pole plate, causes short circuit, a determining deviation should be kept between adjacent separator, preferably, adjacent
Spacing between green plate is 5~10mm.
Different chemical synthesis technologies can cause pole plate capacity tolerance very big, the present invention is intended to provide the detection method of green plate,
Therefore, it is necessary to select suitable chemical synthesis technology as specification.The present invention passes through various experiments, finds out for various different models
The best chemical synthesis technology of lead-acid accumulator green plate.
For the negative green plate of the lead-acid accumulator of model 6-DZM-12, in step (1), the channelization at technique
For:A. 0.5h is stood;B. constant-current charge:0.22 CtCharge 0.5h, 0.38 CtCharge 2.0h, 0.67 CtCharge 10.5h;C. permanent
Banish electricity:0.28 CtDischarge 0.5h;D. constant-current charge:0.63 CtCharge 5.5h, 0.40 CtCharge 5.0h, 0.33 CtCharging
4.0h, wherein CtFor the rated capacity of pole plate.For the positive green plate of the lead-acid accumulator of model 6-DZM-12, as excellent
Choosing, channelization at technique with reference to the slot chemical synthesis technology for bearing green plate, wherein electric current is 87.5% being melted into for above-mentioned electric current.
Research has shown that, in the case where above-mentioned channelization is at process conditions, the average discharge capacity of the negative raw pole of model 6-DZM-12 is 2.94Ah;
The average discharge capacity of the positive raw pole of model 6-DZM-12 is 3.10Ah.The discharge capacity of the green plate has been more than existing ripe
The discharge capacity of pole plate.
For the positive green plate of the lead-acid accumulator of model 6-DZM-20, in step (1), the channelization at technique
For:A. 0.5h is stood;B. constant-current charge:0.17 CtCharge 2.0h, 0.485 CtCharge 9.0h;C. constant-current discharge:0.24 CtIt puts
Electric 0.5h;D. constant-current charge:0.406 CtCharge 0.5h, 0.256 CtCharge 5.0h, 0.224 CtCharge 7.0h.
For the negative green plate of the lead-acid accumulator of model 6-DZM-20, in step (1), the channelization at technique
For:A. 0.5h is stood;B. constant-current charge:0.32 CtCharge 2.0h, 0.64 CtCharge 9.0h;C. constant-current discharge:0.3 CtElectric discharge
0.5h;D. constant-current charge:0.6 CtCharge 5.0h, 0.425 CtCharge 5.0h, 0.34 CtCharge 7.0h.
Preferably, in step (2), before pole cluster time electric discharge, first carry out mending electricity, the condition for mending electricity is charging current
For 0.05 Ct, until voltage is 2.4V.
The method of the present invention considers the charge status of lead-acid accumulator in actual use, it is not recommended that overcharges or crosses and puts.
Preferably, in step (2), the condition of the electric discharge is:Discharge current is 0.5 Ct, until voltage is 1.7~1.75V.
For the polar plate of lead acid storage battery of model 6-DZM-12, in step (2), the condition of charging is:0.3A chargings 7~
5~5.5h of 9h, 0.2A charging, 10~11h of 0.1A chargings.More preferably, the condition of charging is:0.3A charging 8h, 0.2A chargings
5.25h, 0.1A charging 10.5h.
For the polar plate of lead acid storage battery of model 6-DZM-20, in step (2), the condition of charging is:0.75A chargings 8
4~4.5h of~10h, 0.50A chargings, 11~13h of 0.20A chargings.More preferably, the condition of charging is:0.75A chargings 9h,
0.50A charging 4.25h, 0.20A chargings 12.0h.
Preferably, in step (3), the cycle-index of charge and discharge is no less than 3 times.
Compared with prior art, the advantageous effect that the present invention has:(1) present invention connects electrode line according to positive plate, bears
The mode that pole plate connects negative line carries out charge and discharge to pole plate, directly detects the voltage on positive/negative plate, and testing result is more acurrate,
It is reproducible;(2) the method for the present invention is simple and practicable, is detected to green plate before assembling of lead-acid storage battery, is protected from source
Demonstrate,prove the electrical property of lead-acid accumulator.
Description of the drawings
Fig. 1 is green plate combo schematic diagram of the present invention.
Specific implementation mode
It is further illustrated the present invention below with specific embodiment, but the scope of the present invention is not limited thereto.
Embodiment 1
The side of the positive green plate of pretreated 6-DZM-12 lead-acid accumulators and its combo opposite sex pole plate according to Fig. 1 will be passed through
Formula combo, it is 1.05gcm to immerse sour density-3H2SO4In solution, 30min is stood.According to process conditions shown in table 1 to pole
Plate is melted into, and it is 1.28gcm that pole plate, which is transferred to sour density, after chemical conversion-3H2SO4In solution, and it is mended
Electricity, it is 2.4V to mend control voltage in electric process, and charging current 0.085A, the time is for 24 hours.It discharges, controls after mending electricity
Discharge voltage processed is 1.75V, discharge current 0.86A, records discharge time.According to technique shown in table 5 after discharging for the first time
It is charged again to pole plate, then begins to discharge, control discharge voltage is 1.75V, discharge current 0.86A.To pole plate into
5 discharge capacity tests of row, the results are shown in Table 6.
Embodiment 2
It will use negative raw pole and its combo opposite sex pole plate in the way of Fig. 1 by pretreated 6-DZM-12 lead-acid accumulators
Combo, it is 1.05gcm to immerse sour density-3H2SO4In solution, 30min is stood.According to process conditions shown in table 2 to pole plate
It is melted into, it is 1.28gcm that pole plate, which is transferred to sour density, after chemical conversion-3H2SO4In solution, and it is mended
Electricity, it is 2.4V to mend control voltage in electric process, and charging current 0.085A, the time is for 24 hours.It discharges, controls after mending electricity
Discharge voltage processed is 1.75V, discharge current 0.86A, records discharge time.According to technique shown in table 5 after discharging for the first time
It is charged again to pole plate, then begins to discharge, control discharge voltage is 1.75V, discharge current 0.86A.To pole plate into
5 discharge capacity tests of row, the results are shown in Table 6.
Embodiment 3
The positive green plate of the 6-DZM-20 lead-acid accumulators handled well and its combo opposite sex pole plate are matched in the way of Fig. 1
Group, it is 1.05gcm to immerse sour density-3H2SO4In solution, 30min is stood.According to process conditions shown in table 3 to pole plate into
Row chemical conversion, it is 1.28gcm that pole plate, which is transferred to sour density, after chemical conversion-3H2SO4In solution, and it is carried out to mend electricity,
It is 2.4V to mend control voltage in electric process, and charging current 0.25A, the time is for 24 hours.It discharges after mending electricity, control is put
Piezoelectric voltage is 1.75V, discharge current 2.5A, records discharge time.According to technique shown in table 5 to pole plate after discharging for the first time
It is charged again, then begins to discharge, control discharge voltage is 1.75V, discharge current 2.5A.Pole plate put for 5 times
Capacitance is tested, and the results are shown in Table 6.
Embodiment 4
The 6-DZM-20 lead-acid accumulators handled well are matched with negative green plate and its combo opposite sex pole plate in the way of Fig. 1
Group, it is 1.05gcm to immerse sour density-3H2SO4In solution, 30min is stood.According to process conditions shown in table 4 to pole plate into
Row chemical conversion, 1.28gcm is transferred to after chemical conversion by pole plate-3H2SO4In solution, and it is carried out to mend electricity, mends electric process
Middle control voltage is 2.4V, and charging current 0.25A, the time is for 24 hours.It discharges after mending electricity, control discharge voltage is
1.75V, discharge current 2.5A record discharge time.Pole plate is carried out again according to technique shown in table 5 after discharging for the first time
Charging, then begins to discharge, and control discharge voltage is 1.75V, discharge current 2.5A.5 discharge capacities are carried out to pole plate to survey
Examination, the results are shown in Table 6.
Embodiment 5
It will use positive raw pole and its combo opposite sex pole plate in the way of Fig. 1 by pretreated 6-DZM-12 lead-acid accumulators
Combo, it is 1.05gcm to immerse sour density-3H2SO4In solution, 30min is stood.According to process conditions shown in table 2 to pole plate
It is melted into, wherein electric current is melted by shown in table 2 87.5%, and pole plate, which is transferred to sour density, after chemical conversion is
1.28g·cm-3H2SO4In solution, and it is carried out to mend electricity, it is 2.4V to mend control voltage in electric process, and charging current is
0.085A, time are for 24 hours.It discharges after mending electricity, control discharge voltage is 1.75V, discharge current 0.86A, record
Discharge time.It is charged again to pole plate according to technique shown in table 5 after discharging for the first time, then begins to discharge, control is put
Piezoelectric voltage is 1.75V, discharge current 0.86A.5 discharge capacity tests are carried out to pole plate, the results are shown in Table 6.
Embodiment 6
The side of the positive green plate of pretreated 6-DZM-12 lead-acid accumulators and its combo opposite sex pole plate according to Fig. 1 will be passed through
Formula combo, it is 1.05gcm to immerse sour density-3H2SO4In solution, 240min is stood.According to process conditions shown in table 1 to pole
Plate is melted into, and it is 1.28gcm that pole plate, which is transferred to sour density, after chemical conversion-3H2SO4In solution, and it is mended
Electricity, it is 2.4V to mend control voltage in electric process, and charging current 0.085A, the time is for 24 hours.It discharges, controls after mending electricity
Discharge voltage processed is 1.75V, discharge current 0.86A, records discharge time.According to technique shown in table 5 after discharging for the first time
It is charged again to pole plate, then begins to discharge, control discharge voltage is 1.75V, discharge current 0.86A.To pole plate into
5 discharge capacity tests of row, the results are shown in Table 6.
Embodiment 7
The positive green plate of the 6-DZM-20 lead-acid accumulators handled well and its combo opposite sex pole plate are matched in the way of Fig. 1
Group, it is 1.05gcm to immerse sour density-3H2SO4In solution, 30min is stood.According to process conditions shown in table 3 to pole plate into
Row chemical conversion, wherein chemical conversion electricity is increased by the discharge time extended in formation process, specially pole plate is in 0.17 CtUnder fill
Electric time lengthening 30min;0.34 CtUnder fill and be changed to 0.485 CtLower charging, time lengthening 60min;0.318 CtLower charging is changed to
0.406 CtLower charging, time lengthening 60min;0.228 CtUnder fill and be changed to 0.256 CtLower charging, time lengthening 90min;
0.182 CtUnder fill and be changed to 0.224 CtLower charging.It is 1.28gcm that pole plate, which is transferred to sour density, after chemical conversion-3H2SO4
In solution, and it is carried out to mend electricity, it is 2.4V to mend control voltage in electric process, and charging current 0.25A, the time is for 24 hours.Mend electricity
After discharge, control discharge voltage be 1.75V, discharge current 2.5A, record discharge time.After discharging for the first time
It is charged again to pole plate according to technique shown in table 5, then begins to discharge, control discharge voltage is 1.75V, and discharge current is
2.5A.5 discharge capacity tests are carried out to pole plate, the results are shown in Table 6.
Embodiment 8
The positive green plate of the 6-DZM-20 lead-acid accumulators handled well and its combo opposite sex pole plate are matched in the way of Fig. 1
Group, it is 1.05gcm to immerse sour density-3H2SO4In solution, 120min is stood.According to process conditions shown in table 3 to pole plate into
Row chemical conversion, it is 1.28gcm that pole plate, which is transferred to sour density, after chemical conversion-3H2SO4In solution, and it is carried out to mend electricity,
It is 2.4V to mend control voltage in electric process, and charging current 0.25A, the time is for 24 hours.It discharges after mending electricity, control is put
Piezoelectric voltage is 1.75V, discharge current 2.5A, records discharge time.According to technique shown in table 5 to pole plate after discharging for the first time
It is charged again, then begins to discharge, control discharge voltage is 1.75V, discharge current 2.5A.Pole plate put for 5 times
Capacitance is tested, and the results are shown in Table 6.
Embodiment 9
By the positive and negative green plate of different batches production respectively according to the technique of embodiment 5 and embodiment 2, discharge capacity is carried out
Test, the results are shown in Table 7.
It fetches from a batch of positive green plate and from being assembled into 6-DZM-12 type plumbic acids with a batch of negative green plate
Accumulator, and according to GB/T 22199-2008《Sealing lead acid storage battery for electric vehicle》Defined method, to battery
2hr capacity tests are detected.The results are shown in Table 7.
By the positive and negative green plate of different batches production respectively according to the technique of embodiment 7 and embodiment 4, discharge capacity is carried out
Test, the results are shown in Table 8.
It fetches from a batch of positive green plate and from being assembled into 6-DZM-20 type plumbic acids with a batch of negative green plate
Accumulator, and according to GB/T 22199-2008《Sealing lead acid storage battery for electric vehicle》Defined method, to battery
2hr capacity tests are detected.The results are shown in Table 8.
By table 7 and table 8 it is found that the plumbic acid of the lower green plate assembling of pole plate capacity filtered out with detection method
Accumulator compares, and the discharge time of the lead-acid accumulator of the high green plate assembling of pole plate capacity is also grown.To prove inspection of the present invention
The feasibility of survey method.
Table 1
Table 2
Table 3
Table 4
Table 5
Table 6
Table 7
Table 8
Claims (6)
1. a kind of detection method of lead-acid accumulator green plate capacity, includes the following steps:
(1) it randomly selects a piece of green plate to be measured and two panels opposite sex green plate carries out combo, adjacent green plate keeps spacing, puts down
Row be placed in the first sulfuric acid solution, carry out channelization at;
(2) after being melted into, the first sulfuric acid solution is substituted for the second sulfuric acid solution, according to positive plate connection electrode line, cathode
The mode that plate connects negative line carries out cycle charge-discharge to pole plate, records discharge time t;
(3) after cycle charge-discharge, the average discharge capacity C of monolithic pole plate is calculated according to formula C=I × Δ t;
Wherein I is discharge current, and Δ t is average discharge times;
Spacing between adjacent green plate is 5~10cm;First sulfuric acid solution density is 1.05~1.28gcm-3, the second sulfuric acid
The density of solution is 1.27~1.28gcm-3;
In step (2), before pole cluster time electric discharge, first carry out mending electricity, it is 0.05C that the condition for mending electricity, which is charging current,t, until electricity
Pressure is 2.4V;
The condition of electric discharge is:Discharge current is 0.5Ct, until voltage is 1.7~1.75V;
In step (3), the cycle-index of charge and discharge is no less than 3 times.
2. detection method as described in claim 1, which is characterized in that in step (1), the channelization at technique be:A. quiet
Set to 0 .5h;B. constant-current charge:0.22CtCharge 0.5h, 0.38CtCharge 2.0h, 0.67CtCharge 10.5h;C. constant-current discharge:
0.28CtDischarge 0.5h;D. constant-current charge:0.63CtCharge 5.5h, 0.40CtCharge 5.0h, 0.33CtCharge 4.0h, wherein CtFor
The rated capacity of pole plate.
3. detection method as described in claim 1, which is characterized in that in step (1), the channelization at technique be:A. quiet
Set to 0 .5h;B. constant-current charge:0.17CtCharge 2.0h, 0.485CtCharge 9.0h;C. constant-current discharge:0.24CtDischarge 0.5h;d.
Constant-current charge:0.406CtCharge 0.5h, 0.256CtCharge 5.0h, 0.224CtCharge 7.0h.
4. detection method as described in claim 1, which is characterized in that in step (1), the channelization at technique be:A. quiet
Set to 0 .5h;B. constant-current charge:0.32CtCharge 2.0h, 0.64CtCharge 9.0h;C. constant-current discharge:0.3CtDischarge 0.5h;D. permanent
Current charge:0.6CtCharge 5.0h, 0.425CtCharge 5.0h, 0.34CtCharge 7.0h.
5. detection method as described in claim 1, which is characterized in that in step (2), the condition of charging is:0.3A chargings 7~
5~5.5h of 9h, 0.2A charging, 10~11h of 0.1A chargings.
6. detection method as described in claim 1, which is characterized in that in step (2), the condition of charging is:0.75A chargings 8
4~4.5h of~10h, 0.50A chargings, 11~13h of 0.20A chargings.
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CN109269931B (en) * | 2018-08-15 | 2020-11-20 | 超威电源集团有限公司 | Method for testing acid utilization rate in active substance of lead-acid storage battery |
CN111505520A (en) * | 2020-04-22 | 2020-08-07 | 中国电力科学研究院有限公司 | Method and system for rapidly verifying corrosion behavior of lead-acid storage battery |
CN112698211B (en) * | 2020-12-16 | 2023-05-26 | 超威电源集团有限公司 | Method for detecting capacity of single-chip polar plate of storage battery |
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CN101510627A (en) * | 2009-03-31 | 2009-08-19 | 赵恒祥 | Charging/discharging method for accumulator formation, formation method and device |
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