CN102396099B - Method for recycling negative electrode plate of waste lead-acid power battery - Google Patents

Method for recycling negative electrode plate of waste lead-acid power battery Download PDF

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CN102396099B
CN102396099B CN201080014440.2A CN201080014440A CN102396099B CN 102396099 B CN102396099 B CN 102396099B CN 201080014440 A CN201080014440 A CN 201080014440A CN 102396099 B CN102396099 B CN 102396099B
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battery
capacity
negative plate
lug
negative
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CN102396099A (en
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张华农
衣守忠
胡金丰
陈宏�
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Shenzhen Center Power Tech Co Ltd
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Shenzhen Center Power Tech Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/54—Reclaiming serviceable parts of waste accumulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/06—Lead-acid accumulators
    • 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
    • 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
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/84—Recycling of batteries or fuel cells

Abstract

A method for recycling negative electrode plates of waste lead-acid power batteries: connecting each waste lead-acid battery in series; adding dilute sulfuric acid into each battery; charging the waste lead-acid batteries with regulated electrolyte with desired specific gravity in pulse charging mode to recover the battery negative electrode capacities to initial capacities partly or totally; discharging the batteries in constant current, and recording the present capacities of the negative electrode plates of the batteries; weeding out the unrecoverable negative electrode plates based on the present capacities, and classifying other negative electrode plates into several groups based on the present capacities; cutting the negative electrode plates from the bus bar of the batteries group by group and drying them; choosing matching positive electrode plates according to the present capacities of each group of negative electrode plates, and lengthening the length of the tabs of the dried negative electrode plates to accord with the length of the tabs of the positive electrode plates; preparing a complete negative plate assembly through the bus bar by burn-welding or cast-welding; then preparing a new lead-acid battery with the negative plate assembly and the positive plate assembly composed of the matching positive electrode plates. The beneficial effects of the invention are as follows: recovering the capacities of the recycled batteries, classifying the negative electrode plates in different capacities so as to conveniently choose the corresponding positive electrode plates to match the negative electrode plates, and forming batteries with reasonable design. Simultaneously, the negative electrode does not need an antioxidative treatment, thus extra waste water or spent acid does not occur in the invention.

Description

The recoverying and utilizing method of waste and old lead acid power battery cathode plate
Technical field: the present invention relates to the electrode of lead acid accumulator, relate in particular to the regeneration of the useful parts of used and scrapped battery, particularly relate to the recoverying and utilizing method of waste and old lead acid power battery cathode plate.
Background technology is along with the aggravation of exhaustion, greenhouse effect day by day of the chemical energy sources such as oil, and research and industrialization that every country has all strengthened motor vehicle drop into.Wherein electrokinetic cell is known as and is " engine " of motor vehicle, of greatest concern.Can come into operation in enormous quantities at present, and cost is suitable for the lead acid accumulator that only has of acceptance.According to conservative estimation, the first half of the year in 2009, whole world electric bicycle sales volume had 15,017,010,000 dollars, and generally battery has accounted for 20% of its selling price, that is to say that the first half of the year in 2009, lead-acid battery sales volume was approximately 300340.2 ten thousand yuan.Yet lead-acid battery is as electric vehicles electrokinetic cell, and its cycle life only has the time of 1～2 year.Every year there is this type of a large amount of electrokinetic cells to scrap.As everyone knows, the battery that service life cycle stops generally has two reasons: one, and said positive-pole plate structure subsides, argillization and lose conductive capability, battery end of life; Its two, negative plate sulfation, capacity loss causes battery end of life.Because of the battery of described former thereby end-of-life, its anode plate and conductive capability are all no problem, and just the degree utilized of active material has declined.
We know, lead-acid battery also has another purposes, and that is exactly as floating charge stand-by power supply, such as the back-up source as large-scale telecomm base station, bank, solar street light etc.It is that in pole plate, grid corrosion loses conductive capability that the service life of lead accumulator of this purposes stops Main Patterns.We will find so, and the negative plate that service life cycle stops, although capacity declines to some extent, remains and can meet life requirements as floating charge stand-by power supply, and its grid structure is intact, and corrosion is slight, and spongy lead electric conductivity is good.Different in view of these two kinds of occupation mode battery end of life patterns, we think and can use cycle life to stop the negative plate of battery completely, are assembled into the lead acid accumulator that floating charge is used.
Chinese patent application CN101286583A has proposed a kind of processing technology of lead-acid accumulator recycling, wherein mention the lead acid accumulator after reclaiming is opened by mechanical force, take out negative plate, in dilution heat of sulfuric acid, after charging reduction, through antioxidant, process and be dried.The negative plate of handling well can mix or coordinate separately new positive plate to use, and is assembled into storage battery and uses.But in this technical scheme, negative plate need to be taken out from battery, and put into electrolytic bath, in dilution heat of sulfuric acid, charge and reduce, then in having the aqueous solution of antioxidant, clean and dry.This method is similar to lead-acid battery pole plate manufacture craft, consume a large amount of water, and produces reluctant spent acid and waste water.Pole plate is taken out simultaneously, once more in electrolytic bath, weld, wasted a large amount of manpowers.
In addition, this patent is not classified the battery of recovery yet, is only that employing monomer battery voltage is the normal standard that reclaims battery higher than 1.0V.Monomer battery voltage can not illustrate that more than 1.0V the conductivity of this battery cathode and grid structure are most of complete in fact.The storage battery that completely likely part float life stops, negative electrode grid is fully corrosion, cannot regular picture, but because it still has fraction capacity and conductive capability, open circuit voltage still can reach more than 1.0V.Obviously with monomer voltage, higher than the standard of 1.0V, be insecure.
Summary of the invention the technical problem to be solved in the present invention is to avoid above-mentioned the deficiencies in the prior art part and recoverying and utilizing method that a kind of waste and old lead acid power battery cathode plate is provided, solves a large amount of water of consumption that prior art exists and produce the unfiled processing of reluctant spent acid and waste water and negative plate to make to reclaim the problem that usefulness is not high.
It is by realizing by the following technical solutions that the present invention solve the technical problem: a kind of recoverying and utilizing method of waste and old lead acid power battery cathode plate is provided, in turn includes the following steps:
A. by described each waste lead acid battery series connection, to adding proportion in each battery cell, be 1.28～1.34 dilute sulfuric acid, addition is 5～20% of the normal acid amount of this battery cell, to observe battery separator top, has obvious free acid to be as the criterion; And adjust battery electrolyte proportion between identical with normal battery 1.28～1.32, then shelve 4～24 hours.
B. adjusted electrolyte density to the described waste lead acid battery meeting the requirements is carried out to charging process by pulse current charge mode, make described battery cathode capacity partly or entirely return to former capability value.
C. described battery is discharged with constant current, and records the discharge capacity of negative plate, when described battery discharge to allow final voltage time, the negative plate discharge capacity recording, is the existing capacity of negative plate of described battery.
D. reject the existing capacity of described negative plate lower than the negative plate of its former capacity 70%, other negative plate is differed to 10% and is divided into each capacity group so that existing capacity is every.
E. with each capacity Zu Wei unit of described battery, move to respectively in the glove box of nitrogen protection, from the bus-bar of this battery, cut negative plate.
F. the negative plate of cutting is still moved on to respectively in the vacuum drying oven that is filled with nitrogen protection and toasted with each capacity Zu Wei unit, till extremely the water content in described vacuum drying oven no longer changes.
G. with the existing Capacity Selection of described each capacity group negative plate adaptive positive plate with it, and described lug of having dried negative plate is lengthened, make the consistent of its length and described positive plate.
H. adopt and freeze or negative plate that cast welding mode has lengthened described lug is made a complete negative pole group by bus-bar, and the positive pole that forms of the described positive plate group suitable with it, new lead-acid battery made.
Described step B " carries out charging process by adjusted electrolyte density to the described waste lead acid battery meeting the requirements by pulse current charge mode, makes described battery cathode capacity partly or entirely return to former capability value ", comprises step by step:
B1. the electric current of 0.05～0.1 times with described battery rated capacity charges to this battery, and charge volume is to four times of battery rated capacity.
B2. with the current discharge of 0.05～0.1 times of described battery rated capacity to its final voltage value of allowing.
Above step b1 and b2 are repeated 1～3 time, until described waste lead acid battery no longer includes significant change discharge time.
Described in step C " described battery is discharged with constant current, and records the discharge capacity of negative pole, when described battery discharge to allow electric final voltage time, the negative discharge amount recording, is the capacity of negative plates value of described battery ", comprise step by step:
C1. reference electrode is inserted in the hole of boring on the acid adding hole of the described battery after described step B processes or this battery cover, makes described reference electrode be positioned at cell utmost point group top, and make it to contact with the electrolyte of this inside battery.
C2. record the relative voltage of described reference electrode and negative plate, then with a constant current, discharge, this constant current is 0.05～0.5 times of described battery rated capacity, when described in reaching, allow final voltage condition time, calculate the capacity that in cell, negative pole is emitted, this capacity is the existing capacity of negative pole of described battery.
Described in step F, " negative plate of cutting still being moved on to respectively in the vacuum drying oven that is filled with nitrogen protection and toasted with each capacity Zu Wei unit; till extremely the water content in described vacuum drying oven no longer changes " is to say: described each negative plate toasts in the vacuum drying oven of 40 ℃～100 ℃ of temperature; described vacuum drying oven was vacuumized once in every 10～30 minutes; to discharge the moisture content in this vacuum drying oven, until the water content in described vacuum drying oven no longer changes.
Described in step G, " described lug of having dried negative plate is lengthened, makes the consistent of its length and described positive plate ", comprise step by step:
G1. by tab cutting in described negative plate main body, make the remaining length L of described lug 1meet following formula:
L 1＝R 06+D 1
R wherein 06the arc radius of described lug and negative plate main body arc joint 06, D 1be negative pole reserved value, get 1～5mm;
G2. make a female mold tool, the width W of described groove 4adaptive with described lug width W, this depth of groove H 4thickness H than described lug exceeds 0.5～2mm; Its length L 4adaptive with the length L that this lug is wanted to be lengthened to;
G3. by with the lead roll-in of described lug with material, identical with described lug degree to the thickness of described lead, then this lead is cut into leads, the thickness H of described leads 3, width W 3identical with thickness H, the width W of described lug respectively, and its length L 3, meet following formula:
L 3＝L－L 1-D 2，
Wherein L is the length that described negative plate main body lug is wanted to be lengthened to, L 1be lug residue length described in step g 1; D 2leads reserved value, gets 1～3mm;
G4. the lug of described negative plate is put into the groove of described mould, and described leads is also put into this groove, leads is contacted with the top of groove, and the space between described lug and leads and described negative pole reserved value D 2identical;
G5. with flame heating, make described lug and the two position fusing being close of lead, then in gap between the two, add lead water, make the thickness of described gap be not less than the thickness H of described lug.
Described in step G, in " with the existing Capacity Selection of described each capacity group negative plate adaptive positive plate with it ", the capacity of positive plate is 90～95% of the existing capacity of described negative plate.
Described final voltage of allowing: 6V battery is 4.8～5.4V, 12V battery is 9.6～10.8V.
Described reference electrode is to adopt cadmium electrode, or Mercurous sulfate electrode.
Compared with the existing technology, beneficial effect of the present invention is: the battery reclaiming has been carried out to capacity restoration processing, and the negative pole of different capabilities is classified, can select easily corresponding positive pole to mate, to form storage battery reasonable in design.Meanwhile, the present invention, in application, does not need anticathode to carry out anti-oxidant treatment, can not produce new waste water or spent acid.
Description of drawings 1 is the schematic flow sheet of the preferred embodiment of the present invention;
Fig. 2 is the schematic top plan view that negative pole described in the preferred embodiment of the present invention 01, leads 03 are placed in female mold tool 04 groove 0401;
Fig. 3 is the cross-sectional schematic of A-A in Fig. 2;
Fig. 4 is the cross-sectional schematic of B-B in Fig. 2.
Below embodiment, the preferred embodiment shown in by reference to the accompanying drawings is further set forth the present invention.
Referring to Fig. 1, the preferred embodiment of the recoverying and utilizing method of waste and old lead acid electrokinetic cell of the present invention is to adopt still time following steps:
A. by described each waste lead acid battery series connection, to adding proportion in each battery cell, be 1.28～1.34 dilute sulfuric acid, addition is 5～20% of the normal acid amount of this battery cell, to observe battery separator top, has obvious free acid to be as the criterion; And adjust battery electrolyte proportion between identical with normal battery 1.28～1.32, then shelve 4～24 hours.
B. adjusted electrolyte density to the described waste lead acid battery meeting the requirements is carried out to charging process by pulse current charge mode, make described battery cathode capacity partly or entirely return to former capability value.
C. described battery is discharged with constant current, and record the discharge capacity of negative plate, when described battery discharge is during to final discharging voltage, the negative plate discharge capacity recording, is the existing capacity of negative plate of described battery.
D. reject the existing capacity of described negative plate lower than the negative plate of its former capacity 70%, other negative plate is differed to 10% and is divided into each capacity group so that existing capacity is every.
E. with each capacity Zu Wei unit of described battery, move to respectively in the glove box of nitrogen protection, from the bus-bar of this battery, cut negative plate;
F. the negative plate of cutting is still moved on to respectively in the vacuum drying oven that is filled with nitrogen protection and toasted with each capacity Zu Wei unit, till extremely the water content in described vacuum drying oven no longer changes.
G. with the existing Capacity Selection of described each capacity group negative plate adaptive positive plate with it, and described lug of having dried negative plate is lengthened, make the consistent of its length and described positive plate.
H. adopt and freeze or negative plate that cast welding mode has lengthened described lug is made a complete negative pole group by bus-bar, and anodal group of forming of the described positive plate suitable with it, new lead-acid battery made.
Described step B " carries out charging process by adjusted electrolyte density to the described waste lead acid battery meeting the requirements by pulse current charge mode, makes described battery cathode capacity partly or entirely return to former capability value ", comprises step by step:
B1. the electric current of 0.05～0.1 times with described battery rated capacity charges to this battery, and charge volume is a times to four times of battery rated capacity;
B2. with the current discharge of 0.05～0.1 times of described battery rated capacity to its final voltage value of allowing.Above step b1 and b2 are repeated 1～3 time, until described waste lead acid battery no longer includes significant change discharge time.
Described in step C " described battery is discharged with constant current, and record the discharge capacity of negative pole, when described battery discharge is during to final discharging voltage, the negative discharge amount recording, is the capacity of negative plates value of described battery ", comprise step by step:
C1. reference electrode is inserted in the hole of boring on the acid adding hole of the described battery after described step B processes or this battery cover, makes described reference electrode be positioned at cell utmost point group top, and make it to contact with the electrolyte of this inside battery;
C2. record the relative voltage of described reference electrode and negative plate, then with a constant current, discharge, this constant current is 0.05～0.5 times of described battery rated capacity, when described in reaching, allow final voltage condition time, calculate the capacity that in cell, negative pole is emitted, this capacity is the existing capacity of negative pole of described battery.
Reference electrode described in this example is to adopt cadmium electrode, or Mercurous sulfate electrode.
Described in step F, " negative plate shearing off being moved on in the vacuum drying oven that is filled with nitrogen protection and toasted; till extremely the water content in described vacuum drying oven no longer changes " is to say: described negative plate toasts in the vacuum drying oven of 40 ℃～100 ℃ of temperature; described vacuum drying oven was vacuumized once in every 10～30 minutes; to discharge the moisture content in this vacuum drying oven, until the water content in described vacuum drying oven no longer changes.
Referring to Fig. 2 to 4, " described lug of having dried negative plate is lengthened, make the consistent of its length and described positive plate " described in step G, comprise step:
G1. lug 02 in described negative plate main body 01 is cut, make the remaining length L of described lug 02 1meet following formula:
L 1＝R 06+D 1,
R wherein 06the arc radius of described lug 02 and negative plate main body 01 arc joint 06, D 1be negative pole reserved value, generally get 1～5mm.
G2. make a female mold tool 04, the width W of described groove 0401 4adaptive with described lug 02 width W, this groove 0401 depth H 4thickness H than described lug 02 exceeds 0.5～2mm; Its length L 4the length L of wanting to be lengthened to this lug 02 is consistent.
G3. by with the lead roll-in of described lug 02 with material, identical with described lug 02 thickness to the thickness of described lead, then this lead is cut into leads 03, the thickness H of described leads 03 3, width W 3identical with thickness H, the width W of described lug 02 respectively, and its length L 3, meet following formula:
L 3＝L－L 1-D 2，
Wherein L is the length that described negative plate main body 01 lug 02 is wanted to be lengthened to, L 1be this lug 02 residue length in step g 1, D 2be leads reserved value, get 1～3mm.
G4. the lug of described negative plate main body 01 02 is put into the groove 0401 of described mould 04, and described leads 03 is also put into this groove 0401, leads 03 is contacted with the top of groove 0401, and the space between described lug 02 and leads 03 05 and described leads reserved value D 2identical.
G5. with flame heating, make described lug 02 and lead 03 the two position fusing being close, then in 05 place, space between the two, add lead water, make the thickness at 05 place, described space be not less than the thickness H of described lug 02.
Described in step G, in " with the existing Capacity Selection of described negative plate adaptive positive plate with it ", the capacity of positive plate is 90～95% of the existing capacity of described negative plate, as shown in the table:
The existing capacity of negative plate (being the percentage % of rated capacity) 70～80 80～90 90～100
Positive electrode capacity (the percentage % of the existing capacity of negative plate) 90～95 90～95 90～95
Because the concentration of electrolyte has been adjusted to unanimously in this programme steps A, the contained sulfuric acid amount of the negative plate of every recovery is the same.In battery acid adding, enter so identically when sour, finally the sour proportion of each cell is also the same.Therefore,, as long as according to the sulfuric acid concentration finally needing, in conjunction with the contained sulfuric acid amount of negative plate, calculate sulfuric acid concentration and the amount that need to add just passable.
The final voltage of allowing described in the present embodiment: 6V battery is 4.8～5.4V, 12V battery is 9.6～10.8V.
With the lead-acid battery that the inventive method is made, can be used in multiple use, such as recycling as electrokinetic cell, as the use of floating charge stand-by power supply etc.Optimum use occasion is floating charge stand-by power supply, is with 2.28～2.3V/ monomer, carries out for a long time low current charge, the mode of operation of just discharging once in a while.
Said process is the preferred implementation procedure of the present invention, the common variation that those skilled in the art carries out substantially in the present invention and substitute and to be included in protection scope of the present invention within.

Claims (7)

1. a recoverying and utilizing method for waste and old lead acid power battery cathode plate, in turn includes the following steps:
A. by described each waste lead acid battery series connection, to adding proportion in each battery cell, be 1.28～1.34 dilute sulfuric acid, addition is 5～20% of the normal acid amount of this battery cell, to observe battery separator top, has obvious free acid to be as the criterion; And adjust battery electrolyte proportion between identical with normal battery 1.28～1.32, then shelve 4～24 hours;
B. adjusted electrolyte density to the described waste lead acid battery meeting the requirements is carried out to charging process by pulse current charge mode, make described battery cathode capacity partly or entirely return to former capability value;
Comprise step by step:
B1. the electric current of 0.05～0.1 times with described battery rated capacity charges to this battery, and charge volume is a times to four times of battery rated capacity;
B2. again with the current discharge of 0.05～0.1 times of described battery rated capacity to its final discharging voltage value of allowing;
Above step b1 and b2 are repeated 1～3 time, until described waste lead acid battery no longer includes significant change discharge time;
C. described battery is discharged with constant current, and record the discharge capacity of negative plate, when described battery discharge is when allowing final discharging voltage, the negative plate discharge capacity recording, is the existing capacity of negative plate of described battery;
D. reject the existing capacity of described negative plate lower than the negative plate of its former capacity 70%, other negative plate is differed to 10% and is divided into each capacity group so that existing capacity is every;
E. with each capacity Zu Wei unit of described battery, move to respectively in the glove box of nitrogen protection, from the bus-bar of this battery, cut negative plate;
F. the negative plate of cutting is still moved on to respectively in the vacuum drying oven that is filled with nitrogen protection and toasted with each capacity Zu Wei unit, till extremely the water content in described vacuum drying oven no longer changes;
G. with the existing Capacity Selection of described each capacity group negative plate adaptive positive plate with it, and described lug of having dried negative plate is lengthened, make the consistent of its length and described positive plate;
H. adopt and freeze or negative plate that cast welding mode has lengthened described lug is made a complete negative pole group by bus-bar, and anodal group of forming of the described positive plate suitable with it, new lead-acid battery made.
2. according to the recoverying and utilizing method of waste and old lead acid power battery cathode plate described in claim 1, it is characterized in that:
Described in step C " described battery is discharged with constant current, and records the discharge capacity of negative pole, when described battery discharge to allow final discharging voltage time, the negative discharge amount recording, is the capacity of negative plates value of described battery ", comprise step by step:
C1. reference electrode is inserted in the hole of boring on the acid adding hole of the described battery after described step B processes or this battery cover, makes described reference electrode be positioned at cell utmost point group top, and make it to contact with the electrolyte of this inside battery;
C2. record the relative voltage of described reference electrode and negative plate, then with a constant current, discharge, this constant current is 0.05～0.5 times of described battery rated capacity, when described in reaching, allow final voltage condition time, calculate the capacity that in cell, negative pole is emitted, this capacity is the existing capacity of negative pole of described battery.
3. according to the recoverying and utilizing method of waste and old lead acid power battery cathode plate described in claim 1, it is characterized in that:
Described in step F " by the negative plate of cutting still Yi Ge Kong Liangzuwei unit move on to respectively in the vacuum drying oven that is filled with nitrogen protection and toast; till no longer changing to the water content in described vacuum drying oven " be to say: described each negative plate toasts in the vacuum drying oven of 40 ℃～100 ℃ of temperature; described vacuum drying oven was vacuumized once in every 10～30 minutes; to discharge the moisture content in this vacuum drying oven, until the water content in described vacuum drying oven no longer changes.
4. according to the recoverying and utilizing method of waste and old lead acid power battery cathode plate described in claim 1, it is characterized in that:
Described in step G, " described lug of having dried negative plate is lengthened, makes the consistent of its length and described positive plate ", comprise step by step:
G1. the upper lug (02) of described negative plate main body (01) is cut, make the remaining length L of described lug (02) 1meet following formula:
L 1＝R 06+D 1,
R wherein 06the arc radius of described lug (02) and negative plate main body (01) arc joint 06, D 1be negative pole reserved value, get 1～5mm;
G2. make a female mold tool (04), the width W of described groove (0401) 4adaptive with described lug (02) width W, this groove (0401) depth H 4thickness H than described lug (02) exceeds 0.5～2mm; Its length L 4the length L of wanting to be lengthened to this lug (02) is consistent;
G3. will with the lead roll-in of described lug (02) with material, identical with described lug (02) thickness to the thickness of described lead, then this lead is cut into leads (03), the thickness H of described leads (03) 3, width W 3identical with thickness H, the width W of described lug (02) respectively, and its length L 3, meet following formula:
L 3＝L－L 1-D 2，
Wherein L is the length that described negative plate main body (01) lug (02) is wanted to be lengthened to, L 1be this lug (02) residue length in step g 1, D 2be leads reserved value, get 1～3mm;
G4. the lug (02) of described negative plate main body (01) is put into the groove (0401) of described mould (04), and described leads (03) is also put into this groove (0401), leads (03) is contacted with the top of groove (0401), and the space (05) between described lug (02) and leads (03) and described leads reserved value D 2identical;
G5. with flame heating, make described lug (02) and the two position fusing being close of lead (03), in then locating to space (05) between the two, add lead water, the thickness that described space (05) is located is not less than the thickness H of described lug (02).
5. according to the recoverying and utilizing method of waste and old lead acid power battery cathode plate described in claim 1, it is characterized in that:
Described in step G, in " with the existing Capacity Selection of described each capacity group negative plate adaptive positive plate with it ", the capacity of positive plate is 90～95% of the existing capacity of described each negative plate.
6. according to the recoverying and utilizing method of waste and old lead acid power battery cathode plate described in claim 1 or 2, it is characterized in that:
Described final voltage of allowing: 6V battery is 4.8～5.4V, 12V battery is 9.6～10.8V.
7. according to the recoverying and utilizing method of waste and old lead acid power battery cathode plate described in claim 2, it is characterized in that:
Described reference electrode adopts cadmium electrode, or Mercurous sulfate electrode.
CN201080014440.2A 2010-02-01 2010-02-01 Method for recycling negative electrode plate of waste lead-acid power battery Active CN102396099B (en)

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