CN109742328A - Preprocess method for lead-acid accumulator green plate - Google Patents
Preprocess method for lead-acid accumulator green plate Download PDFInfo
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- CN109742328A CN109742328A CN201811552112.2A CN201811552112A CN109742328A CN 109742328 A CN109742328 A CN 109742328A CN 201811552112 A CN201811552112 A CN 201811552112A CN 109742328 A CN109742328 A CN 109742328A
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- green plate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention discloses a kind of preprocess methods for lead-acid accumulator green plate, this method follows these steps to carry out: on the basis of battery green plate has made curing and drying, after the assay was approved to free lead, green plate is immersed in the sink with temperature control, interior storage dilute sulfuric acid in sink, soaking time is 30~60min, and during which acid liquor temperature control is between 20~50 DEG C.Green plate is taken out at that time, by cool acid solution of the extension to surface without trickling in its natural state of the green plate after pickling.Green plate is then placed on to 36~48h of baking in 60 ± 5 DEG C of drying chamber.The present invention adds one of pretreatment process, green plate releasably falls most heat through pickling pretreatment, while generating the lead sulfate of layer tissue densification in polar board surface before green plate is unassembled into battery in advance.The lead sulfate plays the role of alleviating acid-base neutralization speed when battery later period acid filling is melted into, to change acid-base neutralization heat generation speed, reaches the expection of drop heat.
Description
Technical field
The invention belongs to electrochemical cell manufacturing technology fields, in particular it relates to which a kind of use is internalized into work
The lead-acid accumulator positive/negative plate preprocess method of skill, it is especially a kind of to be used for power-type, thin polar plate lead acid storage battery green plate
Preprocess method.
Background technique
The performances such as high power, high temperature resistant and long-life are to measure the important indicator of performances of the lead-acid battery superiority and inferiority, especially
It is the high power performance of lead-acid accumulator, is the key index that can most reflect performances of the lead-acid battery.The lead used with the field UPS
For acid accumulator, mating battery has high power performance first, can meet the mating requirement of short time heavy-current discharge.
Therefore, such battery must using thin electrode plate structure design, and the diaphragm configured between positive/negative plate must also use it is slim
Structure design.It is designed by thin-slab structure, interior in a limited space could dispose more pole plates, battery charging and discharging Shi Caiyou is more
Big electrochemical reaction surface area, electrochemical reaction are easier, more thoroughly, to reach the requirement of battery high power performance.
In lead-acid accumulator industry, being commonly called as uninstalled positive/negative plate is green plate.It is well known that raw after curing and drying
Lead plaster main ingredient on pole plate is 3BS [3Pb (OH)2·PbSO4] and 4BS [4Pb (OH)2·PbSO4].3BS and 4BS is alkali
Property substance, when green plate, which is assembled into, to be melted into battery through acid filling, 3BS and 4BS on pole plate in lead plaster are sent out with electrolyte immediately
Raw violent acid-base neutralization reaction.Acid-base neutralization reaction generates a large amount of heat, in particular by the Gao Gong of thin electrode plate structure design
Rate battery, electrolyte and the lead plaster acid-base neutralization reaction on pole plate are more abundant, and electrothermal calefactive rate is faster.It is narrow in battery case
In space, the big calorimetric that the short time generates can not distribute in time, easily cause the diaphragm between positive/negative plate breakdown because of high temperature,
Cause dendrite short circuit.In addition, high temperature also causes battery case thermal deformation, excessive thermal deformation necessarily leads to asking greatly for battery batch scrap
Topic.
Summary of the invention
The power type battery that hair invention is designed mainly for the prior art, sharply generates heat in the stage that is internalized into, causes positive and negative
The problem of diaphragm between pole plate is breakdown and shell thermal deformation, proposes a kind of pretreatment side for lead-acid accumulator green plate
Method, this method is easy, reasonable, and implementation condition requires low, the calorific value after capable of being substantially reduced container formation acid filling, can avoid
Battery thermal deformation damage.
The present invention is achieved through the following technical solutions technical goal.
For the preprocess method of lead-acid accumulator green plate, it is improved in that following these steps to carry out:
1.1, on the basis of battery green plate has made curing and drying, after the assay was approved to free lead, green plate is immersed in band
In the sink of temperature control, interior storage dilute sulfuric acid, green plate are neatly emitted on plastic pallet in vertical state in sink, green plate together with
Bracket is immersed in liquid level in slot jointly hereinafter, the time is 30~60min, and during which acid liquor temperature control is between 20~50 DEG C；
1.2, green plate is taken out at that time, by cool acid solution of the extension to surface without trickling in its natural state of the green plate after pickling；
1.3, green plate is placed on to 36~48h of baking in 60 ± 5 DEG C of drying chamber, lead plaster moisture content is during which detected, when moisture content is small
Stop drying in 1%.
As the scheme of further improvement, the sour density of the dilute sulfuric acid is 1.07 ± 0.01g/mm at 25 DEG C3。
Compared with prior art, the present invention having the positive effect that:
1, pickling operating method is easy, and mating conventional equipment can realize industrialized production；
2, green plate generates the lead sulfate of white, the lead sulfate drop of such dense structure in polar board surface after pickling pre-processes
The reaction speed of 3BS and 4BS and acid inside low pole plate, will not generate high temperature, therefore in a short time after battery acid filling
Pole plate dendrite short circuit problem can not occur, battery case thermal deformation problem is also not present；
3, method simplicity, wide adaptation range, can both be made together pickling pretreatment with positive/negative plate, can also soaked to positive plate
Low-kappa number.
Specific embodiment
Below by embodiment, the invention will be further described.
Embodiment 1
The present embodiment is the positive and negative anodes for being matched with the high power lead-acid accumulator of 15 min rate 12V800W of large-scale data center
Plate, system voltage class 4 80V.
For the preprocess method of lead-acid accumulator green plate, this method follows these steps to carry out:
1, on the basis of battery green plate has made curing and drying, after the assay was approved to free lead, green plate is immersed in band temperature
In the sink of control, the acid solution of interior storage is dilute sulfuric acid in sink, and the sour density of dilute sulfuric acid used is 1.07 ± 0.01g/ at 25 DEG C
mm3.Green plate is neatly emitted on plastic pallet in vertical state, green plate impregnated jointly together with bracket in the sink liquid level with
Under, the present embodiment soaking time is 60 min, and acid liquor temperature control is within the scope of 40~50 DEG C during immersion.
2, green plate is taken out at that time, by cool acid solution of the extension to surface without trickling in its natural state of the green plate after pickling.
3, green plate is placed in 60 ± 5 DEG C of drying chamber and dries 36h, lead plaster moisture content is during which detected, when moisture content is less than
1% stops drying.
Embodiment 2
The present embodiment is using the 12V200Ah high power lead-acid accumulator in UPS computer room, the poles 384V such as system voltage.
For the preprocess method of lead-acid accumulator green plate, this method follows these steps to carry out:
1, on the basis of battery green plate has made curing and drying, after the assay was approved to free lead, green plate is immersed in band temperature
In the sink of control, interior acid solution is dilute sulfuric acid in sink, and the sour density of dilute sulfuric acid used is 1.08 ± 0.01g/ at 25 DEG C
mm3.Green plate is neatly emitted on plastic pallet in vertical state, green plate impregnated jointly together with bracket in the sink liquid level with
Under, the present embodiment soaking time is 30 min, and acid liquor temperature control is within the scope of 20~30 DEG C during immersion.
2, green plate is taken out at that time, by cool acid solution of the extension to surface without trickling in its natural state of the green plate after pickling.
3, green plate is placed in 60 ± 5 DEG C of drying chamber and dries 48h, lead plaster moisture content is during which detected, when moisture content is less than
1% stops drying.
In the industry, lead-acid accumulator manufacturing processes customary uses green plate direct-assembling at battery first, subsequently into note
Sour formation process just generates acid-base neutralization reaction sharply, the consequence of the reaction after the injection of enough acid solutions with alkaline lead plaster
Generate a large amount of heat.Since battery case inner cavity is relatively narrow, these heats cannot vapor away in time, and the heat of accumulation is easily led to
Diaphragm between positive/negative plate is breakdown and causes short circuit accident.In addition the heat that inside battery generates also brings disaster to battery case, heat
The shell of deformation easily forms quality accident.In view of the problems of the existing technology, the present invention is unassembled into battery in green plate
Before, one of pretreatment process is added in advance, and green plate is pre-processed through pickling, releasably falls most heat, while in pole
The lead sulfate of plate surface generation one layer tissue densification.The lead sulfate later period when battery acid filling is melted into, plays alleviation acid-base neutralization
The effect of speed, to reduce acid-base neutralization heat generation speed.Such as embodiment 1 acid filling be melted into when, battery case highest
Temperature only has 52 DEG C, and the comparative example of the prior art is when acid filling is melted into, and battery case maximum temperature is 76 DEG C.Embodiment 2 exists
Acid filling be melted into when, battery case maximum temperature is 59 DEG C, and the comparative example of the prior art acid filling be melted into when, battery case highest
Temperature is 79 DEG C.From measured data it is found that the heat that the acid-base neutralization of the embodiment of the present invention 1 and 2 generates is far below the prior art
Heat, reaches the expection of significant drop heat, creates good condition for the safe operation of matched lead-acid accumulator.
Claims (2)
1. a kind of preprocess method for lead-acid accumulator green plate, it is characterised in that this method follows these steps to carry out:
1.1, on the basis of battery green plate has made curing and drying, after the assay was approved to free lead, green plate is immersed in band
In the sink of temperature control, interior storage dilute sulfuric acid, green plate are neatly emitted on plastic pallet in vertical state in sink, green plate together with
Bracket is immersed in liquid level in slot jointly hereinafter, the time is 30~60min, and during which acid liquor temperature control is between 20~50 DEG C；
1.2, green plate is taken out at that time, by cool acid solution of the extension to surface without trickling in its natural state of the green plate after pickling；
1.3, green plate is placed on to 36~48h of baking in 60 ± 5 DEG C of drying chamber, lead plaster moisture content is during which detected, when moisture content is small
Stop drying in 1%.
2. the preprocess method according to claim 1 for lead-acid accumulator green plate, it is characterised in that: dilute sulphur
The sour density of acid is 1.07 ± 0.01g/mm at 25 DEG C3。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811552112.2A CN109742328A (en) | 2018-12-19 | 2018-12-19 | Preprocess method for lead-acid accumulator green plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811552112.2A CN109742328A (en) | 2018-12-19 | 2018-12-19 | Preprocess method for lead-acid accumulator green plate |
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| Publication Number | Publication Date |
|---|---|
| CN109742328A true CN109742328A (en) | 2019-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811552112.2A Withdrawn CN109742328A (en) | 2018-12-19 | 2018-12-19 | Preprocess method for lead-acid accumulator green plate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111180674A (en) * | 2020-01-03 | 2020-05-19 | 天能电池集团股份有限公司 | Lead storage battery production method and lead storage battery |
| CN112670457A (en) * | 2020-12-25 | 2021-04-16 | 天能电池集团股份有限公司 | Secondary curing method for pole plate with overproof free lead content after curing |
-
2018
- 2018-12-19 CN CN201811552112.2A patent/CN109742328A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111180674A (en) * | 2020-01-03 | 2020-05-19 | 天能电池集团股份有限公司 | Lead storage battery production method and lead storage battery |
| CN112670457A (en) * | 2020-12-25 | 2021-04-16 | 天能电池集团股份有限公司 | Secondary curing method for pole plate with overproof free lead content after curing |
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Application publication date: 20190510 |
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