CN112421066A - Production process of environment-friendly alkaline battery - Google Patents

Production process of environment-friendly alkaline battery Download PDF

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Publication number
CN112421066A
CN112421066A CN202011293228.6A CN202011293228A CN112421066A CN 112421066 A CN112421066 A CN 112421066A CN 202011293228 A CN202011293228 A CN 202011293228A CN 112421066 A CN112421066 A CN 112421066A
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battery
positive
end cover
negative
battery shell
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CN112421066B (en
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刘薇
刘秋燕
琚双一
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Changzhou Jiangnan Battery Co ltd
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Changzhou Jiangnan Battery Co ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00Primary cells; Manufacture thereof
    • H01M6/04Cells with aqueous electrolyte
    • H01M6/06Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00Primary cells; Manufacture thereof
    • H01M6/005Devices for making primary cells
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Primary Cells (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

The application relates to a production process of an environment-friendly alkaline battery, which comprises the following steps: an annular positive end clamping groove is formed in the inner wall, close to the positive end, of the battery shell, and an annular negative end clamping groove is formed in the inner wall, close to the negative end, of the battery shell; pressing an annular elastic spacer on the positive end cover, coating glue on one end of the positive end cover, and then loading the glue on the positive end of the battery shell from the negative end of the battery shell; the other end of the elastic spacer is clamped into the clamping groove at the positive end; pressing the positive ring, filling the diaphragm cylinder and the zinc paste into the battery shell; and inserting the negative current collector into the zinc paste, pressing the negative end cover into the negative end of the battery shell, and coating sealant between the battery shell and the negative end cover. The battery prepared by the process has good sealing performance, is not easy to leak, and improves the environmental protection property.

Description

Production process of environment-friendly alkaline battery
Technical Field
The application relates to the technical field of alkaline batteries, in particular to an environment-friendly alkaline battery production process.
Background
The alkaline battery is also called an alkaline dry battery, an alkaline zinc-manganese battery and an alkaline manganese battery, and is a variety with the best performance in a zinc-manganese battery series. Is suitable for long-time use with large discharge capacity. The battery has lower internal resistance, so the generated current is larger than that of the common carbon battery, and the battery does not contain mercury, so the battery can be treated with the household garbage and does not need to be recycled intentionally.
The Chinese patent of the prior grant publication No. CN101483253B discloses a high-stability large-current alkaline battery, which consists of a battery shell, a positive electrode ring, zinc paste and diaphragm paper: the battery shell is a nickel-coated steel shell with one closed end, and is a container of the battery and also serves as the anode of the battery; the anode ring is a tubular ring body which is prepared by dispersing and stirring a binary nickel-manganese oxide mixture modified by a chemical precipitation method, a conductive agent, an adhesive and electrolyte uniformly and then tabletting, granulating and looping; the middle of the positive ring is inserted with diaphragm paper to separate the positive electrode and the negative electrode of the battery; adding zinc paste into the diaphragm paper, wherein the zinc paste is used as a battery cathode and mainly comprises a sealing ring of a battery consisting of zinc alloy powder, sodium polyacrylate and electrolyte, and a cathode cover, combining the sealing ring and the cathode cover together to prepare a battery cathode cover cap, welding the battery cathode cover cap with an indium-plated copper nail used as a cathode current collector, inserting the battery cathode cover cap into the cathode zinc paste, and finally sealing and molding the battery.
In view of the above-described related art, the inventors have considered that when the battery is pressed by an external object, the battery case is easily deformed and broken, and the broken position often occurs at the contact position between the cylindrical case and the positive and negative electrode end portions, and the electrolyte in the battery is easily leaked after the battery case is broken, thereby damaging the environment.
Disclosure of Invention
In order to alleviate the problem that electrolyte is easy to leak when the battery is extruded, the application provides an environment-friendly alkaline battery production process.
The production process of the environment-friendly alkaline battery adopts the following technical scheme:
the production process of environment friendly alkaline cell includes the following steps:
a. preparing a battery shell, namely preparing a cylindrical battery shell, wherein an annular positive end clamping groove is formed in the inner wall, close to a positive end, of the battery shell, and an annular negative end clamping groove is formed in the inner wall, close to a negative end, of the battery shell;
b. preparing a positive end cover, and pressing an annular first elastic spacer into the positive end cover, wherein one end of the elastic spacer is connected with the positive end cover;
c. after glue is coated on one end of the positive end cover, the positive end cover is arranged on the positive end of the battery shell from the negative end of the battery shell, and the positive end cover is pressed with an upper clamping ring of the positive end of the battery shell through a first pressing die;
d. the first pressing die is withdrawn, meanwhile, the second pressing die enters the battery shell, the first elastic spacer is extruded, and the other end of the first elastic spacer is clamped into the positive electrode clamping groove;
e. pressing the positive electrode ring into the battery shell, and filling a diaphragm cylinder in the middle of the positive electrode ring;
f. injecting electrolyte into the diaphragm cylinder, and injecting zinc paste into the diaphragm cylinder after the electrolyte is absorbed by the diaphragm cylinder;
g. preparing a negative end cover, pressing an annular second elastic spacer into the negative end cover, connecting one end of the second elastic spacer with the negative end cover, and integrating a negative current collector on the negative end cover;
h. and inserting the negative current collector into the zinc paste, pressing the negative end cover into the negative end of the battery shell, and coating sealant between the battery shell and the negative end cover.
Through above-mentioned technical scheme, through in the internal installation positive pole end cover of battery, adopt the elasticity spacer to be connected positive pole end cover and the inside positive pole end draw-in groove of battery case, receive great pressure effects such as extrusion when battery case, the positive pole end cover of casing produces and breaks away from, through the self-adaptation of elasticity spacer elongate, prevent that the leak from producing, can prevent that the electrolyte in the casing from leaking from casing and positive pole end cover junction, improve the feature of environmental protection of battery.
Optionally, in step h, when the negative end cap is pressed into the negative end of the battery case, one end of the second elastic spacer is clamped into the negative end clamping groove on the inner wall of the battery case.
Through the technical scheme, the elastic spacer connected to the negative end cover is connected with the negative end clamping groove in the battery shell, so that the negative end cover and the battery shell are firmly connected, electrolyte in the shell can be prevented from leaking from the joint of the shell and the negative end cover, and the environmental protection performance of the battery is improved.
Optionally, the positive electrode ring comprises the following components: 83-90 parts of manganese dioxide, 1.5-5 parts of barium sulfate, 6-9 parts of a positive electrode conductive material, 0.3-0.5 part of an additive and 0.2-0.3 part of a binder, wherein the binder is compounded by zinc stearate and HA1681 according to a mass ratio of 1:4-4, and the additive is composed of the following raw materials in parts by weight: 2-8 parts of yttrium oxide, 2-12 parts of yttrium hydroxide, 0.3-0.8 part of polynitrile compound, 1.2-1.8 parts of lithium dioxalate borate and 0.2-0.8 part of potassium bromide.
By adopting the technical scheme, the anode ring adopts the components, so that the internal resistance of the battery can be effectively reduced, the utilization rate of active substances is improved, the using amount of the anode conductive material can be reduced, the content of the active substances of the battery is improved, and the discharge capacity and the comprehensive performance of the battery are improved.
Optionally, the positive electrode ring is prepared by the following steps: uniformly mixing manganese dioxide and barium sulfate, performing ball milling in a ball mill, mixing with the positive electrode conductive material and the adhesive, stirring after uniform mixing, and finally performing sheet rolling and granulation to obtain the positive electrode ring.
Through the technical scheme, the anode ring is prepared through the processes of ball milling, uniformly mixing, stirring, tabletting, granulating and the like, and the preparation method is simple and high in efficiency.
Optionally, the electrolyte is composed of 35wt% -40wt% potassium hydroxide solution.
By adopting the technical scheme, the potassium hydroxide solution with the concentration of 35-40 wt% is used as the electrolyte, so that the service life of the battery is prolonged, and the economical efficiency is improved.
Optionally, the zinc paste is composed of the following raw materials in parts by weight: 50-55 parts of metal zinc alloy powder, 2-3 parts of zinc oxide, 0.02-0.05 part of indium oxide and 20-45 parts of 35-45 wt% potassium hydroxide solution.
Through the technical scheme, the discharging capacity is greatly improved through the zinc paste prepared from the following components, the service life is effectively prolonged, and the lead-free and mercury-free zinc paste is lead-free and environment-friendly.
Optionally, the zinc paste is prepared by the following steps: heating potassium hydroxide solution in water to 60-70 ℃, sequentially adding metal zinc alloy powder, zinc oxide and indium oxide, stirring and uniformly mixing.
By adopting the technical scheme, the preparation method of the zinc paste improves the preparation efficiency of the zinc paste, thereby improving the economy.
Optionally, the battery case is prepared by the following steps:
firstly, stretching a round battery plate, and forming the battery plate into a first blank body with a preset inner diameter and a preset height;
expanding the opening of the opening by adopting an opening expanding die, and expanding the inner diameters of the upper section and the lower section of the first green body to form a second green body with the larger inner diameters of the upper section and the lower section and the smaller inner diameter of the middle section;
thirdly, extruding the upper section and the lower section of the second green body towards the middle section to obtain a third green body;
fourthly, flaring the middle section of the third green body, and flaring the inner diameter of the middle section to be the same as the inner diameters of the upper section and the lower section to obtain a fourth green body;
fifthly, shaping a bump formed at the joint of the middle section and the upper section of the inner wall of the fourth blank body, and extruding the bump towards the inner wall of the upper section to form a positive terminal clamping groove; shaping a bump formed at the joint of the middle section of the inner wall and the lower section of the fourth blank body, and extruding the bump towards the inner wall of the lower section to form a negative end clamping groove;
sixthly, stamping the upper section of the shaped fourth blank, and forming an upper snap ring at the uppermost end of the upper section; and stamping the lower section of the shaped fourth blank to form a lower clamping ring at the lowest end of the lower section.
Through the technical scheme, the battery shell is formed by stretching, flaring, extruding and other steps of the round plate, so that the part, close to the positive end and the negative end, inside the battery shell is integrally formed with the positive clamping groove and the negative clamping groove, the sealing performance of the whole battery shell is ensured, the sealing performance of the battery is ensured, the leakage of the battery is avoided, and the environmental protection performance is improved.
In summary, the present application includes at least one of the following beneficial technical effects:
1. this application is through in the internal installation positive pole end cover of battery, adopts the elasticity spacer to be connected positive pole end cover and the inside positive pole end draw-in groove of battery case, and under battery case received great pressure effect such as extrusion, the positive pole end cover of casing produced and breaks away from, through the elongation of the self-adaptation of elasticity spacer, prevents that the leak from producing, can prevent that the electrolyte in the casing from leaking from casing and positive pole end cover junction, improves the feature of environmental protection of battery. The elastic spacer connected with the negative end cover is connected with the negative end clamping groove in the battery shell, so that the negative end cover and the battery shell are connected firmly, electrolyte in the shell can be prevented from leaking from the joint of the shell and the negative end cover, and the environmental protection performance of the battery is improved.
2. The battery shell is formed by stretching, flaring, extruding and other steps on the round plate, so that the part, close to the positive end and the negative end, inside the battery shell is integrally formed with the positive clamping groove and the negative clamping groove, the sealing performance of the whole battery shell is ensured, the sealing performance of the battery is ensured, the leakage of the battery is avoided, and the environmental protection performance is improved.
Drawings
Fig. 1 is a schematic structural view of a first blank according to an embodiment of the present application.
Fig. 2 is a schematic structural view of a second blank according to an embodiment of the present application.
Fig. 3 is a schematic structural view of a third blank according to an embodiment of the present application.
Fig. 4 is a schematic structural view of a fourth blank according to an embodiment of the present application.
Fig. 5 is a schematic structural diagram of a battery case according to an embodiment of the present application.
Fig. 6 is a schematic diagram of the structure of an alkaline cell made in accordance with the present application.
Fig. 7 is an enlarged view of a portion a of fig. 6 of the present application.
Fig. 8 is an enlarged view of the portion B of fig. 6 of the present application.
Reference number specification, 1, battery case; 2. a positive end cap; 3. a first elastic spacer; 4. a positive electrode ring; 5. a diaphragm cartridge; 6. a negative end cap; 7. a second elastic spacer; 8. a negative current collector; 9. zinc paste; 101. a snap ring is arranged; 102. a lower snap ring; 103. an upper section; 104. middle section, 105, lower section; 106. a positive terminal clamping groove; 107. a negative end clamping groove; 201. an annular mounting groove; 202. pressing the block; 601. mounting grooves; 602. and (7) pressing the blocks.
Detailed Description
The present application is described in further detail below with reference to figures 1-8.
The embodiment of the application discloses a production process of an environment-friendly alkaline battery, which comprises the following steps:
step 1: preparing a battery case 1, specifically by the following steps;
step 101, stretching a round battery plate, and forming the battery plate into a first blank body with a preset inner diameter and a preset height, as shown in fig. 1;
step 102, flaring is carried out by adopting a flaring die, and the inner diameters of the upper section 103 and the lower section 105 of the first blank are flared to form a second blank with the larger inner diameter of the upper section 103 and the lower section 105 and the smaller inner diameter of the middle section 104, as shown in fig. 2;
103, extruding the upper section 103 and the lower section 105 of the second blank towards the middle section 104 to obtain a third blank, as shown in fig. 3;
104, flaring the middle section 104 of the third blank, and flaring the inner diameter of the middle section 104 to be the same as the inner diameters of the upper section 103 and the lower section 105 to obtain a fourth blank;
step 105, shaping a bump formed at the connection position of the middle section 104 and the upper section 103 of the inner wall in the fourth blank body, and extruding the bump towards the inner wall of the upper section 104 to form a positive terminal clamping groove 106; shaping a bump formed at the connection part of the middle section 104 and the lower section 105 of the inner wall in the fourth green body, and extruding the bump towards the inner wall of the lower section 105 to form a negative end clamping groove 107, as shown in fig. 4;
step 106, stamping the shaped upper section 103 of the fourth blank, and forming an upper snap ring 101 at the uppermost end of the upper section 103; the lower section 105 of the shaped fourth blank is punched to form the lower snap ring 102 at the lowermost end of the lower section 105, as shown in fig. 5, thus completing the preparation of the battery case 1.
Step 2: preparing a circular positive end cover 2, and punching a position, close to the edge, on the circular positive end cover 2 to form an annular mounting groove 201, and pressing an annular first elastic spacer 3 into the positive end cover 2, wherein one end of the first elastic spacer 3 is pressed into the annular mounting groove 201 on the positive end cover 2 through an upper pressing block 202 and is fixed in the annular mounting groove 201 through glue, and the outer diameter of the other end of the first elastic spacer 3 is larger than that of the positive end cover 2.
And step 3: referring to fig. 6 and 7, after glue is applied to one end of the positive end cover 2, the positive end cover 2 is loaded onto the positive end of the battery case 1 from the negative end of the battery case 1, and the positive end cover 2 is pressed with the upper snap ring 101 at the positive end of the battery case 1 through a first pressing die, wherein the diameter of the first pressing die is smaller than the inner diameter of the annular mounting groove 201 on the positive end cover 2, so that the first pressing die does not touch the first elastic spacer 3, and the positive end cover 2 is fixed on the battery case 1.
And 4, step 4: referring to fig. 6 and 7, the first pressing die is withdrawn, and simultaneously the second pressing die enters the battery shell 1, the diameter of the second pressing die is larger than the outer diameter of the annular mounting groove 201, so that the second pressing die directly acts on the first elastic spacer 3 to extrude the first elastic spacer 3, and the other end of the first elastic spacer 3 is clamped into the positive end clamping groove 106, so that the positive end cover 2 is mounted.
And 5: the positive electrode ring 4 is pressed into the battery shell 1, and the diaphragm cylinder 5 is arranged in the middle of the positive electrode ring 4, and the method comprises the following specific steps:
step 501, mixing 83-90 parts of manganese dioxide and 1.5-5 parts of barium sulfate uniformly, and carrying out ball milling in a ball mill;
step 502, mixing the ball-milled material with 6-9 parts of a positive conductive material, 0.3-0.5 part of an additive and 0.2-0.3 part of a binder, uniformly mixing, and stirring to obtain positive mixing powder, wherein in the embodiment, the positive conductive material is graphite, the binder is compounded by zinc stearate and HA1681 according to a mass ratio of 1:4-4, and the additive is composed of the following raw materials in parts by weight: 2-8 parts of yttrium oxide, 2-12 parts of yttrium hydroxide, 0.3-0.8 part of polynitrile compound, 1.2-1.8 parts of lithium dioxalate borate and 0.2-0.8 part of potassium bromide;
step 503, passing the anode mixed powder through a rolling mill with the pressure of the rolling mill being 150-200KG, forming an anode rolled sheet, sending the anode rolled sheet into a drying oven for drying treatment, wherein the drying temperature of the drying oven is 150-180 ℃, the drying time is 4-8 minutes, sending the anode rolled sheet into a granulator, and forming an anode ring 4;
step 504, the positive electrode ring 4 is pressed into the battery case 1, and then the separator cylinder 5 is inserted into the middle of the positive electrode ring 4.
Step 6: injecting electrolyte into the diaphragm cylinder 5, wherein the electrolyte is a 35wt% -40wt% potassium hydroxide solution, and injecting zinc paste 9 into the diaphragm cylinder 5 after the electrolyte is absorbed by the diaphragm 5, wherein in the embodiment, the zinc paste 9 is prepared by the following steps: preparing 35-40 wt% potassium hydroxide solution in water, heating to 60-70 deg.C, sequentially adding 50-55 parts of zinc alloy powder, 2-3 parts of zinc oxide and 0.02-0.05 part of indium oxide, stirring, and mixing.
And 7: preparing a negative end cover 6, and referring to fig. 6 and 8, preparing a circular negative end cover 6 by punching, punching to form an annular mounting groove 601 at a position close to the edge on one end of the circular negative end cover 6 close to the positive end cover 2, pressing an annular second elastic spacer 7 on the negative end cover 6 through a lower pressing block 602, pressing one end of the second elastic spacer 7 into the annular mounting groove 601 on the negative end cover 6, and fixing the second elastic spacer in the annular mounting groove 601 through glue. And a copper nail is welded at the center of the negative end cover 6 to be used as a negative current collector 8.
And step 8: referring to fig. 6 and 8, the negative electrode current collector 8 is inserted into the calamine 9 while pressing the second elastic separator 7 toward the center thereof so that the second elastic separator 7 can be snapped into the lower snap ring 102 of the negative end of the battery case 1, and then the negative end cap 6 is pressed down so that the negative end cap 6 moves toward the positive end cap 2 to close the battery case 1. When the negative end cap 6 moves toward the positive end cap 2, the second elastic spacer 7 extends from the lower snap ring 102 into the battery case 1 and is snapped into the negative end snap groove 107 in the battery case 1. Sealant is coated on the part of the negative end cover 6, which is attached to the battery shell 1, for fixing the negative end cover 6 and the lower snap ring 102 on the battery shell 1.
The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The production process of the environment-friendly alkaline battery is characterized by comprising the following steps:
a. preparation of battery case (1): preparing a cylindrical battery shell (1), wherein an annular positive end clamping groove (106) is formed in the inner wall, close to the positive end, of the battery shell (1), and an annular negative end clamping groove (107) is formed in the inner wall, close to the negative end, of the battery shell (1);
b. preparing a positive end cover (2): an annular first elastic spacer (3) is pressed into the positive end cover (2), and one end of the first elastic spacer (3) is connected with the positive end cover;
c. after glue is smeared at one end of the positive end cover (2), the positive end cover (2) is installed on the positive end of the battery shell (1) from the negative end of the battery shell (1), and the positive end cover (2) is pressed with the upper clamping ring (101) at the positive end of the battery shell (1) through the first pressing die;
d. the first pressing die is withdrawn, meanwhile, the second pressing die enters the battery shell (1), the first elastic spacer (3) is extruded, and the other end of the first elastic spacer (3) is clamped into the positive end clamping groove (106);
e. pressing the positive electrode ring (4) into the battery shell (1), and filling a diaphragm cylinder (5) in the middle of the positive electrode ring (4);
f. electrolyte is injected into the diaphragm cylinder (5), and zinc paste (9) is injected into the diaphragm cylinder (5) after the electrolyte is absorbed by the diaphragm cylinder (5);
g. preparing a negative end cover (6): pressing an annular second elastic spacer (7) into the negative end cover (6), connecting one end of the second elastic spacer (7) with the negative end cover (6), and integrating a negative current collector (8) on the negative end cover (6);
h. and inserting the negative current collector (8) into the zinc paste (9), pressing the negative end cover (6) into the negative end of the battery shell (1), and coating sealant between the battery shell (1) and the negative end cover (6).
2. The process for producing an environment-friendly alkaline battery as claimed in claim 1, wherein: in the step h, when the negative end cover (6) is pressed into the negative end of the battery shell (1), one end of the second elastic spacer (7) is clamped into a negative end clamping groove (107) on the inner wall of the battery shell (1).
3. The process for producing an environmentally friendly alkaline battery as claimed in claim 1, wherein: the positive electrode ring (4) comprises the following components: 83-90 parts of manganese dioxide, 1.5-5 parts of barium sulfate, 6-9 parts of a positive electrode conductive material, 0.3-0.5 part of an additive and 0.2-0.3 part of a binder, wherein the binder is compounded by zinc stearate and HA1681 according to a mass ratio of 1:4-4, and the additive is composed of the following raw materials in parts by weight: 2-8 parts of yttrium oxide, 2-12 parts of yttrium hydroxide, 0.3-0.8 part of polynitrile compound, 1.2-1.8 parts of lithium dioxalate borate and 0.2-0.8 part of potassium bromide.
4. The process of claim 3, wherein: the positive electrode ring (4) is prepared by the following steps: uniformly mixing manganese dioxide and barium sulfate, performing ball milling in a ball mill, mixing with the positive electrode conductive material and the adhesive, stirring after uniform mixing, and finally performing sheet rolling and granulation to obtain the positive electrode ring.
5. The process for producing an environmentally friendly alkaline battery as claimed in claim 1, wherein: the electrolyte comprises 35-40 wt% of potassium hydroxide solution.
6. The process for producing an environmentally friendly alkaline battery as claimed in claim 1, wherein: the zinc paste (9) is prepared from the following raw materials in parts by weight: 50-55 parts of metal zinc alloy powder, 2-3 parts of zinc oxide, 0.02-0.05 part of indium oxide and 20-45 parts of 35wt% -45wt% potassium hydroxide solution.
7. The process of claim 6, wherein: the zinc paste (9) is prepared by the following steps: heating potassium hydroxide solution in water to 60-70 ℃, sequentially adding metal zinc alloy powder, zinc oxide and indium oxide, stirring and uniformly mixing.
8. The process for producing an environmentally friendly alkaline battery as claimed in claim 1, wherein: the battery case is prepared by the following steps:
firstly, stretching a round battery plate, and forming the battery plate into a first blank body with a preset inner diameter and a preset height;
secondly, flaring is carried out by adopting a flaring die, and the inner diameters of the upper section (103) and the lower section (105) of the first green body are flared to form a second green body with the larger inner diameters of the upper section (103) and the lower section (105) and the smaller inner diameter of the middle section (104);
thirdly, extruding the upper section (103) and the lower section (105) of the second green body towards the middle section (104) to obtain a third green body;
fourthly, flaring the middle section (104) of the third green body, and flaring the inner diameter of the middle section (104) to be the same as the inner diameters of the upper section (103) and the lower section (105) to obtain a fourth green body;
fifthly, shaping a bump formed at the joint of the middle section (104) and the upper section (103) of the inner wall of the fourth blank body, and extruding the bump towards the inner wall of the upper section (103) to form a positive terminal clamping groove (106); shaping a bump formed at the joint of the middle section (104) of the inner wall of the fourth blank and the lower section (105), and extruding the bump towards the inner wall of the lower section (105) to form a negative end clamping groove (107);
sixthly, stamping the shaped upper section (103) of the fourth blank, and forming an upper snap ring (101) at the uppermost end of the upper section (103); and pressing the lower section (105) of the shaped fourth blank to form a lower snap ring (102) at the lowest end of the lower section (105).
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Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN113964286A (en) * 2021-10-20 2022-01-21 无锡永华电池有限公司 Preparation device and preparation method of alkaline battery anode
CN114614064A (en) * 2022-03-08 2022-06-10 云南昆船设计研究院有限公司 Automatic assembling and pressing equipment and method for cylindrical battery positive electrode cap and zinc cylinder

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