CN101969108B - Copper core type terminal column of valve-regulated lead-acid accumulator and preparation method - Google Patents
Copper core type terminal column of valve-regulated lead-acid accumulator and preparation method Download PDFInfo
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- CN101969108B CN101969108B CN2010105252246A CN201010525224A CN101969108B CN 101969108 B CN101969108 B CN 101969108B CN 2010105252246 A CN2010105252246 A CN 2010105252246A CN 201010525224 A CN201010525224 A CN 201010525224A CN 101969108 B CN101969108 B CN 101969108B
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses a copper core type terminal column of a valve-regulated lead-acid accumulator and a preparation method, which are used for solving the problem that the binding force between a copper core and a lead layer of the copper core type terminal column is weak. The copper core type terminal column of the valve-regulated lead-acid accumulator comprises an inner copper core and an outer lead layer, and a thin tin layer is arranged between the copper core and the lead layer in the improved copper core type terminal column. In the invention, the production process is improved according to factors which influence the binding force between the copper core and the lead layer, a process of removing an oxidization layer on the surface of the copper core is added, and the thin tin layer is arranged between the copper core and the lead layer by a tin plating process. Through the improvement, the binding force between the copper core and the lead layer is strengthened considerably, the shaking of the terminal column is avoided effectively and various bad influences of the shaking of the terminal column on the accumulator are eliminated. On-spot observation shows that all 240 6-FGM-180 storage batteries which use the terminal column in the invention do not have the terminal column loosening phenomenon.
Description
Technical field
The present invention relates to a kind of accumulator element and preparation method, special copper core type terminal column of valve-regulated lead-acid accumulator and preparation method belong to the battery technology field.
Background technology
Analysing valve control type lead-acid accumulator battery is comprised of parts such as housing, positive/negative plate, dividing plate, end poles, and positive plate, negative plate connect by the comb slot welding and form respectively positive and negative bus-bar, welds with middle pole or end pole respectively and forms utmost point group.At present according to routine techniques, its structure of the used copper core pattern of analysing valve control type lead-acid accumulator battery end pole as shown in Figure 2, it is comprised of internal copper core 1 and outside lead layer 2, production process is to process first the copper core, and then plumbous in the outside casting of copper core.The problem that this ordinary copper core pattern end pole exists is: copper core and lead layer adhesion are not strong, rock thereby cause holding pole to produce in use procedure, and the use of accumulators brings potential safety hazard.For example when the end pole is subjected to vertical drag force, might come off from battery by force because of adhesion, thereby cause scrapping of whole battery; May in the heavy-current discharge process, not cause holding pole fusing because adhesion is strong yet, cause battery to scrap.In addition, the end pole rocks and also may cause the battery charging and discharging difficulty, causes battery life to reduce.
Summary of the invention
Technical problem to be solved by this invention is to overcome the defective of above-mentioned prior art and provide a kind of copper core and lead layer in conjunction with firmly copper core type terminal column of valve-regulated lead-acid accumulator and preparation method.
The alleged problem of the present invention is solved by following technical scheme:
A kind of copper core type terminal column of valve-regulated lead-acid accumulator comprises internal copper core and outside lead layer in the formation, its special feature is: be provided with thin tin layer between described copper core and the lead layer.
Above-mentioned copper core type terminal column of valve-regulated lead-acid accumulator, described thin tin thickness is 0.2 ~ 0.7mm.
A kind of method for preparing above-mentioned copper core type terminal column of valve-regulated lead-acid accumulator, it is undertaken by following operation:
A. prepare the copper core;
B. the immersion liquid of copper core is processed: the copper core is coated the position by lead layer immerse in the solution; Described solution formula is by weight percentage: ammonium chloride 3 ~ 10%, zinc chloride 30% ~ 53%, distilled water surplus; Simultaneously, in described solution, splash into 2 ~ 3 concentrated hydrochloric acids in every 100g solution;
C. copper core tin sticky: will dry through the copper core that solution soaks, the position of then the copper core having been soaked dips one deck tin liquor in liquid tin;
D. casting is plumbous: the copper core after tin sticky is cooled to normal temperature, the burr of reconditioning tin layer, and then casting is plumbous, makes finished product copper core pattern end pole.
Above-mentioned copper core type terminal column of valve-regulated lead-acid accumulator preparation method, described solution preparation method is: put into ammonium chloride first in container, then put into zinc chloride, add afterwards hydrochloric acid, add at last distilled water, stir with glass bar, until ammonium chloride, zinc chloride dissolve fully.
Above-mentioned copper core type terminal column of valve-regulated lead-acid accumulator preparation method, described copper core immersion liquid treatment process, the copper core immersion liquid time is 5-12 second.
The present invention is for solving the not strong problem of ordinary copper core pattern end pole copper core and lead layer adhesion, it is for the factor improvement of production process that affects copper core and lead layer adhesion, increase is to copper wicking surface oxide layer removing step, and makes by the tin sticky operation and to increase thin tin layer between copper core and the lead layer.Through above-mentioned improvement, copper core and lead layer adhesion obviously strengthen, and bear moment of torsion that the copper core rotates and improve closely 15% than the common end pole, and the lead layer utmost point is difficult to peel off.According to the copper core pattern end pole that the inventive method is produced, because copper core and lead layer adhesion are strong, effectively avoided the end pole to rock, eliminated because holding pole to rock all harmful effects that accumulators causes.Field observation shows that ordinary copper core end pole is used for the 180A storage battery, part occurs and holds the loosening situation of pole; And all use end pole of the present invention on 240 6-GFM-180 storage batterys, the loosening phenomenon of end pole does not all appear in all storage batterys.
Description of drawings
Fig. 1 is copper core pattern end pole column structure schematic diagram of the present invention;
Fig. 2 is ordinary copper core pattern end pole column structure schematic diagram;
Fig. 3 is copper core immersion liquid schematic diagram;
Fig. 4 is heavy-current discharge contrast test end pole connection diagram.
Attached number in the figure implication is as follows: 1. copper core; 2. lead layer; 3. thin tin layer.
Embodiment
The present invention is directed to the factor that affects copper core and lead layer adhesion and improve existing production technology, at first the copper core that has prepared is carried out immersion liquid and process: the copper core is coated the position by lead layer immerse in the solution, as shown in Figure 3, soak time 5-12 second.The solution formula that is used for immersion copper core is: ammonium chloride NH4Cl 3 ~ 10%, and zinc chloride ZnCl2 30% ~ 53%, distilled water H2O surplus, concentrated hydrochloric acid HCl adds 2 ~ 3 according to every 100g solution.Solution preparation method: first in container, put into ammonium chloride, then put into zinc chloride, add afterwards hydrochloric acid, add at last distilled water, stir with glass bar, until ammonium chloride, zinc chloride dissolve fully.The purpose that the immersion liquid of copper core is processed is: remove the oxide layer of copper wicking surface, the existence of copper wicking surface oxide layer is to cause the copper core to be combined the not main cause of labor with lead layer, and the removing oxide layer can strengthen copper core and plumbous adhesion.The mechanism of action of soaking the copper core is as follows:
Hydrolysis: NH4Cl+H2O=NH3.H2O+HCl occurs in NH4Cl in solution
The 2+2HCl of hydrolysis: ZnCl2+2H2O=Zn(OH) occurs in ZnCl2 in solution
The HCl of hydrolysis is strong acid, can react with the cupric oxide of copper wicking surface, removes oxide layer: 2HCl+CuO=CuCl2+H2O.To carry out tin sticky through the copper core that immersion liquid is processed processes again: pure solid-state tin is inserted be heated to tin in the crucible and be fused into liquid state fully, the position of then the copper core having been soaked dips one deck tin liquor in liquid tin, form the thin tin layer of 0.2 ~ 0.7mm after the tin cooling at the copper wicking surface.This operation can further improve the adhesion of copper core and lead layer, and a part of tin of tin layer and the hydrochloric acid in the solution react: Sn+4HCl=SnCl4+ H2, tin and plumbous similar performance, dip in tin after, can combine closely with lead.Copper core after tin sticky is cooled to normal temperature, and the burr of reconditioning tin layer then can be plumbous according to the common process casting, makes finished product copper core pattern end pole.
Following test shows that copper core pattern end pole of the present invention obviously strengthens than ordinary copper core pattern end pole copper core and lead layer adhesion:
Test one: end pole of the present invention and common end pole lead are put into respectively crucible with the lead layer surface melting, then put into water and accelerate cooling, manual removal lead layer afterwards, common end pole lead layer is easy to just peel off, and end pole of the present invention has used very large power all to fail to peel off.
Test two: choose five copper cores, 1# wherein, 2# does not process, 3#, 4# does immersion liquid and processes, 5# does immersion liquid according to the inventive method, tin sticky is processed, then carry out torsional moment test after five copper core casting lead being made the end pole, wherein, 1#, torque value when 2# end pole copper core rotates is 30(N.M), 3#, torque value when 4# end pole copper core rotates is respectively 37,38(N.M), torque value when 5# end pole copper core rotates is 40(N.M), illustrating that immersion liquid is processed can increase copper core and lead layer adhesion, after the immersion liquid again the tin sticky processing can further increase copper core and lead layer adhesion.
Test three: the heavy-current discharge contrast test, the end pole connects as shown in Figure 4, and wherein the A point is datum mark, and the B point is measurement point, and result of the test sees the following form:
Data can be found out from table, and pressure drop between the copper core and lead layer on the pole is namely held in the A-B pressure drop, and end pole of the present invention is low than the pressure drop of common end pole, and namely resistance reduces between A-B, illustrates that adhesion strengthens compared with before-improvement between copper core and the lead.
Several specific embodiments below are provided:
Embodiment 1: get 4g ammonium chloride NH4Cl, 40g zinc chloride ZnCl2,56g distilled water, 2 concentrated hydrochloric acid HCl obtain solutions; The copper core is coated the position by lead layer to be immersed in the solution 5 seconds; To dry through the copper core that solution soaks, then the copper core is soaked the position and in liquid tin, dip one deck tin liquor, form 0.2 millimeter thin tin layer; Copper core after tin sticky is cooled to normal temperature, the burr of reconditioning tin layer, and then casting is plumbous, makes finished product copper core pattern end pole.
Embodiment 2: get 3g ammonium chloride NH4Cl, 32g zinc chloride ZnCl2,65g distilled water, 2 concentrated hydrochloric acid HCl obtain solutions; The copper core is coated the position by lead layer to be immersed in the solution 10 seconds; To dry through the copper core that solution soaks, then the copper core is soaked the position and in liquid tin, dip one deck tin liquor, form 0.4 millimeter thin tin layer; Copper core after tin sticky is cooled to normal temperature, the burr of reconditioning tin layer, and then casting is plumbous, makes finished product copper core pattern end pole.
Embodiment 3: get 10g ammonium chloride NH4Cl, 30g zinc chloride ZnCl2,60g distilled water, 3 concentrated hydrochloric acid HCl obtain solutions; The copper core is coated the position by lead layer to be immersed in the solution 7 seconds; To dry through the copper core that solution soaks, then the copper core is soaked the position and in liquid tin, dip one deck tin liquor, form 0.7 millimeter thin tin layer; Copper core after tin sticky is cooled to normal temperature, the burr of reconditioning tin layer, and then casting is plumbous, makes finished product copper core pattern end pole.
Embodiment 4: get 8g ammonium chloride NH4Cl, 53g zinc chloride ZnCl2,39g distilled water, 3 concentrated hydrochloric acid HCl obtain solutions; The copper core is coated the position by lead layer to be immersed in the solution 9 seconds; To dry through the copper core that solution soaks, then the copper core is soaked the position and in liquid tin, dip one deck tin liquor, form 0.5 millimeter thin tin layer; Copper core after tin sticky is cooled to normal temperature, the burr of reconditioning tin layer, and then casting is plumbous, makes finished product copper core pattern end pole.
Embodiment 5: get 6g ammonium chloride NH4Cl, 45g zinc chloride ZnCl2,49g distilled water, 3 concentrated hydrochloric acid HCl obtain solutions; The copper core is coated the position by lead layer to be immersed in the solution 7 seconds; To dry through the copper core that solution soaks, then the copper core is soaked the position and in liquid tin, dip one deck tin liquor, form 0.7 millimeter thin tin layer; Copper core after tin sticky is cooled to normal temperature, the burr of reconditioning tin layer, and then casting is plumbous, makes finished product copper core pattern end pole.
Claims (1)
1. a method for preparing copper core type terminal column of valve-regulated lead-acid accumulator comprises internal copper core and outside lead layer in the described copper core pattern end pole formation, it is characterized in that: be provided with thin tin layer between described copper core and the lead layer; Described thin tin thickness is 0.2 ~ 0.7mm;
Preparation is undertaken by following operation:
A. prepare the copper core;
B. the immersion liquid of copper core is processed: the copper core is coated the position by lead layer immerse in the solution; Described solution formula is by weight percentage: ammonium chloride 3 ~ 10%, zinc chloride 30% ~ 53%, distilled water surplus; Simultaneously, in described solution, splash into 2 ~ 3 concentrated hydrochloric acids in every 100g solution; The described copper core immersion liquid processing time is 5-12 second;
C. copper core tin sticky: will dry through the copper core that solution soaks, the position of then the copper core having been soaked dips one deck tin liquor in liquid tin;
D. casting is plumbous: the copper core after tin sticky is cooled to normal temperature, the burr of reconditioning tin layer, and then casting is plumbous, makes finished product copper core pattern end pole;
Described solution preparation method is: first put into ammonium chloride in container, then put into zinc chloride, add afterwards hydrochloric acid, add at last distilled water, stir with glass bar, until ammonium chloride, zinc chloride dissolve fully.
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| CN2010105252246A CN101969108B (en) | 2010-10-30 | 2010-10-30 | Copper core type terminal column of valve-regulated lead-acid accumulator and preparation method |
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| CN101969108B true CN101969108B (en) | 2013-01-23 |
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Families Citing this family (3)
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| CN104332583A (en) * | 2014-09-02 | 2015-02-04 | 安徽超威电源有限公司 | Manufacturing process of copper core type storage battery terminal post |
| CN104241717B (en) * | 2014-09-26 | 2016-07-06 | 浙江天能电池(江苏)有限公司 | A kind of loosening copper core electrode post repair method |
| CN110993877A (en) * | 2019-12-13 | 2020-04-10 | 安徽超威电源有限公司 | Manufacturing process of lead-acid storage battery parts |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2544417Y (en) * | 2002-05-29 | 2003-04-09 | 谭元生 | Double-sealed structure polar column for valve controlled lead-acid accumulator |
| CN101575709A (en) * | 2008-05-05 | 2009-11-11 | 哈尔滨光宇蓄电池股份有限公司 | Corrosive liquid for copper-core pillar dipped with lead-tin alloy |
| CN101593823A (en) * | 2009-05-31 | 2009-12-02 | 广东猛狮电源科技股份有限公司 | The preprocess method of a kind of lead acid accumulator copper core electrode post copper mold insert Bao Zhuqian |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2544417Y (en) * | 2002-05-29 | 2003-04-09 | 谭元生 | Double-sealed structure polar column for valve controlled lead-acid accumulator |
| CN101575709A (en) * | 2008-05-05 | 2009-11-11 | 哈尔滨光宇蓄电池股份有限公司 | Corrosive liquid for copper-core pillar dipped with lead-tin alloy |
| CN101593823A (en) * | 2009-05-31 | 2009-12-02 | 广东猛狮电源科技股份有限公司 | The preprocess method of a kind of lead acid accumulator copper core electrode post copper mold insert Bao Zhuqian |
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Effective date of registration: 20160720 Address after: 071057 Hebei province Baoding Fuchang Road No. 8 Patentee after: Fengfan Co., Ltd. Address before: 071057 Hebei province Baoding Fuchang Road No. 8 Patentee before: Fengfan Co., Ltd. |