CN105044150A - Method for detecting mixing uniformity of additive in lead-acid battery pole plate - Google Patents
Method for detecting mixing uniformity of additive in lead-acid battery pole plate Download PDFInfo
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- CN105044150A CN105044150A CN201510489788.1A CN201510489788A CN105044150A CN 105044150 A CN105044150 A CN 105044150A CN 201510489788 A CN201510489788 A CN 201510489788A CN 105044150 A CN105044150 A CN 105044150A
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Abstract
The invention relates to an inspection technique for detecting whether an additive is mixed uniformly or not in a lead-acid battery paste mixing process, in particular to a method for detecting mixing uniformity of an additive in a lead-acid battery pole plate. According to the method, a differential thermal analysis technique is used, high-purity air is taken as a detection atmosphere, detection temperature is 50 to 1000 DEG C, a differential thermal analysis curve of a lead paste sample is measured, two continuous exothermic peaks appearing at 150 to 700 DEG C are observed, integration is performed on the latter exothermic peak with higher temperature to solve a heat output, heat outputs of different samples are compared, a variable coefficient is calculated, and the mixing uniformity of lead paste is judged. The method is simple and easy to operate, good in practicability, and capable of accurately judging the mixing uniformity of lead paste after the additive is added, ensuring that the lead paste is mixed uniformly during application, and favorably improving the consistency of a storage battery and prolonging the service life.
Description
Technical field
The present invention relates to and detect the inspection technology that in lead-acid accumulator and cream process, whether adjuvant mixes, be specifically related to a kind of method detecting adjuvant mixture homogeneity in polar plate of lead acid storage battery.
Background technology
Plate additive, as accumulator plate auxiliary material, is the important component part of accumulator, has important impact to the performance of accumulator, and adjuvant distributes in pole plate, and whether the even performance impact to accumulator is very large.When adjuvant mixing is uneven, the consistance of voltage is deteriorated, and voltage consistance weighs the important indicator of accumulator property, keep the voltage consistance of accumulator, can avoid not finding and not expectable accumulator failure, extend the serviceable life of accumulator, improve the reliability of system.
In storage battery production process, and cream operation only detects the pseudodensity of lead plaster, to the adjuvant in lead plaster with cream process in whether mix and can not make accurate judgement.At present, not to the method that the whether uniform situation of the mixing of pole plate lead plaster detects, the report of coherent detection is not also carried out.How the mixing degree of pole plate lead plaster is detected, become problem demanding prompt solution in prior art.
Summary of the invention
For the deficiencies in the prior art, the object of this invention is to provide a kind of method detecting adjuvant mixture homogeneity in polar plate of lead acid storage battery, method is simple, be easy to perform.
The method of adjuvant mixture homogeneity in detection polar plate of lead acid storage battery of the present invention, utilize differential thermal analysis (DTA) technology, be detect atmosphere with high pure air, detected temperatures is 50-1000 DEG C, by measuring the differential thermal analysis curve of lead plaster sample, observes two the continuous print exothermic peaks occurred at 150-700 DEG C, integration is carried out to the exothermic peak of higher temperature below and asks thermal discharge, contrast the thermal discharge of different sample, calculate the coefficient of variation, judge the mixture homogeneity of lead plaster.
For realizing quick detection, detected temperatures can be preferably 100-800 DEG C.
When measuring differential thermal analysis curve, heating up from lower than detected temperatures, programming rate is 10 DEG C/min-30 DEG C/min.
Representative for ensureing to detect sample, the lead plaster sample in testing process adopts a sample gathered from the different parts of the lead plaster made is uniform.The sample size gathered is 5-30, and the quality of every increment product is 1g-10g, and grinds respectively each sample.
The instrument that differential thermal analysis (DTA) technology adopts is differential thermal analyzer.
The coefficient of variation adopts following formula to calculate:
C.V＝(SD÷MN)×100％
Wherein, C.V is the coefficient of variation, and SD is standard deviation, and MN is mean value.
In sum, beneficial effect of the present invention is as follows:
(1) method is simple, is easy to perform, and practicality is good, adopt method of the present invention, can realizing accurately judging lead plaster mixing degree after adding adjuvant, ensureing that lead plaster mixes when applying, be conducive to the consistance improving accumulator, increase the service life.
(2) judge that different batches adds in the lead plaster of adjuvant mixing fast and accurately, the mixing degree of which batch is better, thus according to test result realize to lead plaster and the improving and optimizating of cream procedure technology condition.
Accompanying drawing explanation
Fig. 1 be do not add adjuvant before the differential thermal analysis curve of lead plaster;
Fig. 2 be add adjuvant carry out with cream operation after the differential thermal analysis curve of lead plaster.
Embodiment
Below in conjunction with embodiment, the present invention will be further described.
The all raw materials used in embodiment, except specified otherwise, are commercial.
First, detect the differential thermal analysis curve of lead plaster before adding adjuvant, in the exothermic peak that 150-600 DEG C of appearance one is large, see Fig. 1.Then, detect add adjuvant carry out with cream operation after the differential thermal analysis curve of lead plaster, there are two continuous print exothermic peaks at 150-700 DEG C, see Fig. 2.With the differential thermal analysis curve added after adjuvant before contrast adds adjuvant, can judge that the exothermic peak that temperature is above lower is plumbous exothermic peak, the exothermic peak that a temperature next is higher is the exothermic peak of adjuvant, therefore, in subsequent detection process, only integration is carried out to the higher exothermic peak of temperature, calculate its thermal discharge.
Embodiment 1
Sample respectively 3 parts of lead plasters of different batches, every part of lead plaster adopts collection 6 samples from different parts is uniform, and the quality of every increment product is 3.5g, is dried by sample, and grinds respectively.Every increment product get 70mg, and adopt differential thermal analyzer to carry out differential thermal analysis (DTA), detected temperatures is 100-800 DEG C, and programming rate is 10 DEG C/min.The exothermic peak higher to the differential thermal analysis curve temperature obtained carries out integration, calculates the thermal discharge of adjuvant in every gram of sample.The thermal discharge of same batch of different sample is contrasted, adopts its coefficient of variation of following formulae discovery (testing result is in table 1):
C.V＝(SD÷MN)×100％
The testing result of 3 parts of lead plasters in table 1 embodiment 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 less, represents in different sample, and the amount of adjuvant is the most close, illustrates this time better with the lead plaster homogeneity of system; The data variation coefficient of x001 cream and x002 cream is comparatively large, represents in different sample, and the amount difference of adjuvant is comparatively large, illustrates that the homogeneity of adjuvant in these two kinds of lead plasters is poor.In 3 parts of lead plasters, the mixing degree of x003 cream is best, is secondly x001 cream, and the poorest is x002 cream.
Embodiment 2
Sample respectively 3 parts of lead plasters of different batches, every part of lead plaster adopts collection 6 samples from different parts is uniform, and the quality of every increment product is 8.0g, is dried by sample, and grinds respectively.Every increment product get 90mg, and adopt differential thermal analyzer to carry out differential thermal analysis (DTA), detected temperatures is 100-800 DEG C, and programming rate is 30 DEG C/min.The exothermic peak higher to the differential thermal analysis curve temperature obtained carries out integration, calculates the thermal discharge of adjuvant in every gram of sample.The thermal discharge of same batch of different sample is contrasted, adopts its coefficient of variation of following formulae discovery (testing result is in table 2):
C.V＝(SD÷MN)×100％
The testing result of 3 parts of lead plasters in table 2 embodiment 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 less, represents in different sample, and the amount of adjuvant is the most close, illustrates this time better with the lead plaster homogeneity of system; The data variation coefficient of x004 cream and x005 cream is comparatively large, represents in different sample, and the amount difference of adjuvant is comparatively large, illustrates that the homogeneity of adjuvant in these two kinds of lead plasters is poor.In 3 parts of lead plasters, the mixing degree of x006 cream is best, is secondly x004 cream, and the poorest is x005 cream.
Claims (7)
1. one kind is detected the method for adjuvant mixture homogeneity in polar plate of lead acid storage battery, it is characterized in that: utilize differential thermal analysis (DTA) technology, be detect atmosphere with high pure air, detected temperatures is 50-1000 DEG C, by measuring the differential thermal analysis curve of lead plaster sample, observes two the continuous print exothermic peaks occurred at 150-700 DEG C, integration is carried out to the exothermic peak of higher temperature below and asks thermal discharge, contrast the thermal discharge of different sample, calculate the coefficient of variation, judge the mixture homogeneity of lead plaster.
2. the method for adjuvant mixture homogeneity in detection polar plate of lead acid storage battery according to claim 1, is characterized in that: detected temperatures is 100-800 DEG C.
3. the method for adjuvant mixture homogeneity in detection polar plate of lead acid storage battery according to claim 1, is characterized in that: when measuring differential thermal analysis curve, heats up from lower than detected temperatures, programming rate is 10 DEG C/and min-30 DEG C/min.
4. the method for adjuvant mixture homogeneity in detection polar plate of lead acid storage battery according to claim 1, is characterized in that: the lead plaster sample in testing process adopts a sample gathered from the different parts of the lead plaster made is uniform.
5. the method for adjuvant mixture homogeneity in detection polar plate of lead acid storage battery according to claim 4, is characterized in that: the sample size of collection is 5-30, and the quality of every increment product is 1g-10g, and grinds respectively each sample.
6. the method for adjuvant mixture homogeneity in detection polar plate of lead acid storage battery according to claim 1, is characterized in that: the instrument that differential thermal analysis (DTA) technology adopts is differential thermal analyzer.
7. the method for adjuvant mixture homogeneity in detection polar plate of lead acid storage battery according to claim 1, is characterized in that: the coefficient of variation adopts following formula to calculate:
C.V＝(SD÷MN)×100％
Wherein, C.V is the coefficient of variation, and SD is standard deviation, and MN is mean value.
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Cited By (3)
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| CN107290292A (en) * | 2017-05-26 | 2017-10-24 | 超威电源有限公司 | The detection method of additive dispersion effect in lead plaster in a kind of lead-acid accumulator |
| CN108919130A (en) * | 2018-06-12 | 2018-11-30 | 风帆有限责任公司 | The detection method of additive dispersing uniformity in lead-acid storage battery negative lead plaster |
| 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107290292A (en) * | 2017-05-26 | 2017-10-24 | 超威电源有限公司 | The detection method of additive dispersion effect in lead plaster in a kind of lead-acid accumulator |
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| CN108919130A (en) * | 2018-06-12 | 2018-11-30 | 风帆有限责任公司 | The detection method of additive dispersing uniformity in lead-acid storage battery negative lead plaster |
| 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 |