CN105044150B - The method for detecting additive mixture homogeneity in polar plate of lead acid storage battery - Google Patents
The method for detecting additive mixture homogeneity in polar plate of lead acid storage battery Download PDFInfo
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- CN105044150B CN105044150B CN201510489788.1A CN201510489788A CN105044150B CN 105044150 B CN105044150 B CN 105044150B CN 201510489788 A CN201510489788 A CN 201510489788A CN 105044150 B CN105044150 B CN 105044150B
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Abstract
The present invention relates to the inspection technology whether additive during detection lead-acid accumulator and cream is well mixed, and in particular to a kind of method of additive mixture homogeneity in detection polar plate of lead acid storage battery.Methods described, utilize differential thermal analysis technology, using high pure air as detection atmosphere, detection temperature is 50 1000 DEG C, by determining the differential thermal analysis curve of lead plaster sample, observes two continuous exothermic peaks in 150 700 DEG C of appearance, the exothermic peak of higher temperature below is integrated and seeks thermal discharge, the thermal discharge of different samples is contrasted, the coefficient of variation is calculated, judges the mixture homogeneity of lead plaster.The method of the invention, simple and easy to apply, practicality is good, it is possible to achieve is accurately judged adding lead plaster mixing degree after additive, it is ensured that lead plaster is well mixed in application, is conducive to improving the uniformity of battery, increases the service life.
Description
Technical field
The present invention relates to the inspection technology whether additive during detection lead-acid accumulator and cream is well mixed, specifically relate to
And a kind of method for detecting additive mixture homogeneity in polar plate of lead acid storage battery.
Background technology
Plate additive, as accumulator plate auxiliary material, is the important component of battery, and the performance to battery has
Important influence, additive is distributed whether the uniform performance impact to battery is very big in pole plate.Additive mixing is uneven
When even, the uniformity of voltage is deteriorated, and voltage uniformity is to weigh the important indicator of accumulator property, keeps the voltage of battery
Uniformity, can avoid not finding and not expectable accumulator failure, extend the service life of battery, and that improves system can
By property.
During storage battery production, and cream process only detects the apparent density of lead plaster, to the additive in lead plaster and cream
During whether well mixed can not make accurate judgement.At present, the whether uniform situation of mixing not to pole plate lead plaster
The method detected, does not also carry out the report of coherent detection.How the mixing degree of pole plate lead plaster is detected, as existing
There is urgent problem to be solved in technology.
The content of the invention
In view of the shortcomings of the prior art, mixed it is an object of the invention to provide additive in one kind detection polar plate of lead acid storage battery
The method for closing the uniformity, method is simple, easy to carry out.
The method of additive mixture homogeneity, utilizes differential thermal analysis skill in detection polar plate of lead acid storage battery of the present invention
Art, using high pure air as detection atmosphere, detection temperature is 50-1000 DEG C, by determining the differential thermal analysis curve of lead plaster sample, is seen
Two continuous exothermic peaks in 150-700 DEG C of appearance are surveyed, the exothermic peak of higher temperature below is integrated and seeks thermal discharge, it is right
Than the thermal discharge of different samples, the coefficient of variation is calculated, the mixture homogeneity of lead plaster is judged.
It can be preferably 100-800 DEG C by detection temperature to realize quick detection.
Determine differential thermal analysis curve when, started to warm up from less than detection temperature, programming rate be 10 DEG C/min-30 DEG C/
min。
To ensure that detection sample is representative, the lead plaster sample in detection process is from the different portions with the lead plaster made
The sample of the uniform sampling site collection in position.The sample size of collection is 5-30, and the quality of every part of sample is 1g-10g, and to each sample
Product are ground respectively.
The instrument that differential thermal analysis technology is used is differential thermal analyzer.
The coefficient of variation is calculated using equation below：
C.V=(SD ÷ MN) × 100%
Wherein, C.V is the coefficient of variation, and SD is standard deviation, and MN is average value.
In summary, beneficial effects of the present invention are as follows：
(1) method is simple, it is easy to perform, and practicality is good, using method of the present invention, it is possible to achieve added to adding
Lead plaster mixing degree is accurately judged after agent, it is ensured that lead plaster is well mixed in application, is conducive to improving the uniformity of battery,
Increase the service life.
(2) fast and accurately judge that different batches are added in the lead plaster that additive is mixed, which a batch of mixing degree is more preferable,
Improved and optimizated so as to be realized according to test result to lead plaster and cream procedure technology condition.
Brief description of the drawings
Fig. 1 is the differential thermal analysis curve of lead plaster before not adding additive；
Fig. 2 is the differential thermal analysis curve of the lead plaster added after additive progress and cream process.
Embodiment
With reference to embodiment, the present invention will be further described.
All raw materials used in embodiment are purchased in market unless otherwise specified.
First, detection adds the differential thermal analysis curve of lead plaster before additive, a big heat release occurs at 150-600 DEG C
Peak, is shown in Fig. 1.It is then detected that the differential thermal analysis curve of the lead plaster added after additive progress and cream process, goes out at 150-700 DEG C
Existing two continuous exothermic peaks, are shown in Fig. 2.Contrast adds the differential thermal analysis curve before additive and added after additive, can sentence
Break and temperature above than the exothermic peak that relatively low exothermic peak is lead, the higher exothermic peak of latter one temperature is additive
Exothermic peak, therefore, is only integrated to the more highly exothermic peak of temperature during subsequent detection, calculates its thermal discharge.
Embodiment 1
3 parts of lead plasters of different batches are sampled respectively, every part of lead plaster gathers 6 samples from the uniform sampling site of different parts
Product, the quality of every part of sample is 3.5g, and sample is dried, and grinds respectively.Every part of sample takes 70mg, is entered using differential thermal analyzer
Row differential thermal analysis, detection temperature is 100-800 DEG C, and programming rate is 10 DEG C/min.To the differential thermal analysis curve temperature of acquisition compared with
High exothermic peak is integrated, and calculates the thermal discharge of additive in every gram of sample.The thermal discharge of the different samples of same batch is entered
Row contrast, its coefficient of variation is calculated using equation below (testing result is shown in Table 1)：
C.V=(SD ÷ MN) × 100%
The testing result of 3 parts of lead plasters in the embodiment 1 of table 1
| Lead plaster sample | 1 | 2 | 3 | 4 | 5 | 6 | SD | MN | C.V |
| X001 cream | 10.88 | 11.58 | 1.52 | 10.97 | 10.43 | 13.18 | 4.15 | 9.76 | 42.51% |
| X002 cream | 0.42 | 2.43 | 1.46 | 2.79 | 10.09 | 2.24 | 3.46 | 3.24 | 106.88% |
| X003 cream | 8.99 | 10.07 | 10.58 | 10.41 | 10.3 | 10.56 | 0.60 | 10.15 | 5.90% |
The testing result of 3 parts of lead plasters in contrast table 1, the data variation coefficient of x003 cream is smaller, represents in different samples, adds
Plus the amount of agent is closest, illustrate that the lead plaster uniformity this time and made is preferable；The data variation coefficient of x001 cream and x002 cream compared with
Greatly, represent in different samples, the amount difference of additive is larger, illustrates that the uniformity of additive in both lead plasters is poor.3 parts of lead
In cream, the mixing degree of x003 cream is best, next to that x001 cream, worst is x002 cream.
Embodiment 2
3 parts of lead plasters of different batches are sampled respectively, every part of lead plaster gathers 6 samples from the uniform sampling site of different parts
Product, the quality of every part of sample is 8.0g, and sample is dried, and grinds respectively.Every part of sample takes 90mg, is entered using differential thermal analyzer
Row differential thermal analysis, detection temperature is 100-800 DEG C, and programming rate is 30 DEG C/min.To the differential thermal analysis curve temperature of acquisition compared with
High exothermic peak is integrated, and calculates the thermal discharge of additive in every gram of sample.The thermal discharge of the different samples of same batch is entered
Row contrast, its coefficient of variation is calculated using equation below (testing result is shown in Table 2)：
C.V=(SD ÷ MN) × 100%
The testing result of 3 parts of lead plasters in the embodiment 2 of table 2
| Lead plaster sample | 1 | 2 | 3 | 4 | 5 | 6 | SD | MN | C.V |
| X004 cream | 10.78 | 11.68 | 2.49 | 10.97 | 8.56 | 14.28 | 4.02 | 9.79 | 41.08% |
| X005 cream | 1.72 | 1.31 | 0.98 | 1.58 | 6.47 | 3.25 | 2.07 | 2.55 | 81.24% |
| X006 cream | 12.88 | 11.29 | 12.1 | 10.48 | 10.84 | 11.57 | 0.87 | 11.53 | 7.55% |
The testing result of 3 parts of lead plasters in contrast table 2, the data variation coefficient of x006 cream is smaller, represents in different samples, adds
Plus the amount of agent is closest, illustrate that the lead plaster uniformity this time and made is preferable；The data variation coefficient of x004 cream and x005 cream compared with
Greatly, represent in different samples, the amount difference of additive is larger, illustrates that the uniformity of additive in both lead plasters is poor.3 parts of lead
In cream, the mixing degree of x006 cream is best, next to that x004 cream, worst is x005 cream.
Claims (7)
1. a kind of method for detecting additive mixture homogeneity in polar plate of lead acid storage battery, it is characterised in that：Utilize differential thermal analysis
Technology, using high pure air as detection atmosphere, detection temperature is 50-1000 DEG C, by determining the differential thermal analysis curve of lead plaster sample,
Two continuous exothermic peaks in 150-700 DEG C of appearance are observed, the exothermic peak of higher temperature below is integrated and seeks thermal discharge,
The thermal discharge of different samples is contrasted, the coefficient of variation is calculated, judges the mixture homogeneity of lead plaster.
2. the method for additive mixture homogeneity in detection polar plate of lead acid storage battery according to claim 1, its feature exists
In：Detection temperature is 100-800 DEG C.
3. the method for additive mixture homogeneity in detection polar plate of lead acid storage battery according to claim 1, its feature exists
In：When determining differential thermal analysis curve, started to warm up from less than detection temperature, programming rate is 10 DEG C/min-30 DEG C/min.
4. the method for additive mixture homogeneity in detection polar plate of lead acid storage battery according to claim 1, its feature exists
In：Lead plaster sample in detection process is from the sample gathered with the uniform sampling site of the different parts of the lead plaster made.
5. the method for additive mixture homogeneity in detection polar plate of lead acid storage battery according to claim 4, its feature exists
In：The sample size of collection is 5-30, and the quality of every part of sample is 1g-10g, and each sample is ground respectively.
6. the method for additive mixture homogeneity in detection polar plate of lead acid storage battery according to claim 1, its feature exists
In：The instrument that differential thermal analysis technology is used is differential thermal analyzer.
7. the method for additive mixture homogeneity in detection polar plate of lead acid storage battery according to claim 1, its feature exists
In：The coefficient of variation is calculated using equation below：
C.V=(SD ÷ MN) × 100%
Wherein, C.V is the coefficient of variation, and SD is standard deviation, and MN is average value.
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| CN108919130B (en) * | 2018-06-12 | 2021-01-01 | 风帆有限责任公司 | Method for detecting dispersion uniformity of additive in negative lead paste of lead-acid storage battery |
| CN110715902A (en) * | 2019-08-29 | 2020-01-21 | 超威电源有限公司 | Method for detecting uniformity of positive lead paste of lead-acid storage battery |
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Inventor after: Liu Wenlin Inventor after: Wang Jin Inventor after: Cao Guifa Inventor after: Xing Yanchao Inventor after: Su Shouqian Inventor before: Liu Wenlin Inventor before: Cao Guifa Inventor before: Xing Yanchao Inventor before: Su Shouqian |
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Denomination of invention: Method for detecting the mixing uniformity of additives in lead-acid battery plates Effective date of registration: 20230323 Granted publication date: 20171103 Pledgee: Agricultural Bank of China Limited Zibo Zichuan Branch Pledgor: SHANDONG JINKELI POWER SOURCES TECHNOLOGY CO.,LTD. Registration number: Y2023980035988 |