CN110400941B - Method for improving discharge performance of alkaline manganese cell through water supplementing and water supplementing device - Google Patents
Method for improving discharge performance of alkaline manganese cell through water supplementing and water supplementing device Download PDFInfo
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- CN110400941B CN110400941B CN201910808708.2A CN201910808708A CN110400941B CN 110400941 B CN110400941 B CN 110400941B CN 201910808708 A CN201910808708 A CN 201910808708A CN 110400941 B CN110400941 B CN 110400941B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 117
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 229910052748 manganese Inorganic materials 0.000 title claims abstract description 62
- 239000011572 manganese Substances 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 32
- 230000001502 supplementing effect Effects 0.000 title claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 56
- 239000007773 negative electrode material Substances 0.000 claims abstract description 37
- 238000002347 injection Methods 0.000 claims abstract description 23
- 239000007924 injection Substances 0.000 claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 21
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 239000010959 steel Substances 0.000 claims abstract description 21
- 239000003792 electrolyte Substances 0.000 claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 238000003860 storage Methods 0.000 claims abstract description 6
- 238000002955 isolation Methods 0.000 claims description 16
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 239000000243 solution Substances 0.000 claims description 4
- 239000003085 diluting agent Substances 0.000 claims description 2
- 238000003411 electrode reaction Methods 0.000 abstract description 4
- 239000002904 solvent Substances 0.000 abstract description 3
- 239000007864 aqueous solution Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 8
- 238000007599 discharging Methods 0.000 description 8
- 239000011149 active material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000001802 infusion Methods 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 239000010405 anode material Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000002001 electrolyte material Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- RNWHGQJWIACOKP-UHFFFAOYSA-N zinc;oxygen(2-) Chemical compound [O-2].[Zn+2] RNWHGQJWIACOKP-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/04—Cells with aqueous electrolyte
-
- 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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- Engineering & Computer Science (AREA)
- 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 invention provides a method for improving discharge performance of an alkaline manganese cell by water supplementing and a water supplementing device, wherein the method comprises the following steps of: in the process of manufacturing a positive electrode ring, inserting the positive electrode ring, inserting an isolating pipe, injecting electrolyte, injecting a negative electrode material and sealing, after the step of injecting the negative electrode material, injecting a water sample into an annular cavity from an upper end opening of the annular cavity between a battery steel shell and the isolating pipe, wherein the water sample is pure water or an aqueous solution of which the solvent does not influence the positive and negative electrode reactions of the alkaline manganese battery, and then sealing; the addition amount of the water sample is limited by the fact that liquid can not splash out when sealing; the water replenishing device is arranged between the negative electrode material injection machine and the sealing machine and comprises a liquid injection pump, an inlet of the liquid injection pump is communicated with the water sample storage device, an outlet of the liquid injection pump is connected with a water outlet pipe, and the front end of the water outlet pipe extends to the position right above the positive electrode ring between the battery steel shell and the isolating pipe. The invention can effectively improve the discharge performance of the alkaline manganese cell.
Description
Technical Field
The invention relates to the field of battery manufacturing, in particular to a method for improving discharge performance of an alkaline manganese battery through water supplementing and a water supplementing device.
Background
With the rapid progress of various technologies in recent years, various electric appliances have been developed, and the electric appliances have made higher and higher demands on the discharge performance of alkaline manganese batteries. In a discharge mode of high current or high power pulse, the alkaline manganese cell can generate electrochemical polarization of the active material and concentration polarization of an electrohydraulic system, so that the utilization rate of the active material is low, and the capacity of the cell is limited; meanwhile, with the rapid development of the Internet of things, the battery performance requirement on small-current deep discharge of the battery is also higher and higher. Therefore, the discharge performance of the alkaline manganese cell is improved, and the research direction of various cell manufacturers is achieved. Currently, improving the discharge performance of alkaline manganese cells is mainly achieved by increasing the amount of active material (i.e., the "positive electrode ring") filled inside the cell.
The existing alkaline manganese cell production process comprises the following production procedures: the method comprises the steps of manufacturing a positive electrode ring, inserting the positive electrode ring, inserting a separation tube, injecting electrolyte, injecting a negative electrode material (namely zinc paste), and sealing. Wherein, the step of beating the positive electrode ring is to adopt positive electrode material slurry to prepare the positive electrode ring through procedures such as pressing ring, drying and the like; the step of inserting the positive electrode ring is to insert the positive electrode ring into the battery steel shell through a positive electrode ring inserting machine; the step of inserting the isolation tube is to coaxially insert the isolation tube into the inner cavity of the positive electrode ring close to the inner wall of the positive electrode ring through an isolation tube inserting machine; the step of injecting electrolyte is to inject electrolyte into the inner cavity of the isolation tube by adopting an electrolyte injector; the step of injecting the negative electrode material is to inject the negative electrode material into the isolation tube through a negative electrode material injector after the electrolyte is completely absorbed by the isolation tube and the positive electrode ring; the sealing step is to package the assembled negative electrode current collector and a sealing ring (the sealing ring is sleeved outside the negative electrode current collector) into the upper end opening of the isolation tube through a sealing machine, the negative electrode current collector is inserted into the negative electrode material, and meanwhile, the sealing ring extends outwards to seal the upper end opening of the annular cavity between the isolation tube and the battery steel shell, so that the positive electrode ring is isolated from the negative electrode material and the negative electrode current collector. Since the sizes of the battery steel can and the separator are required for various types of alkaline manganese batteries, the improvement of the filling amount of the active material inside the battery (i.e., the "positive electrode ring") and the improvement of the discharge performance of the alkaline manganese battery caused thereby are very limited.
Disclosure of Invention
It is an object of the present invention to provide a method for improving discharge performance of alkaline manganese cells by supplementing water.
A method for improving discharge performance of alkaline manganese cell by supplementing water comprises the following steps: in the process of manufacturing a positive electrode ring, inserting the positive electrode ring, inserting an isolating pipe, injecting electrolyte, injecting a negative electrode material and sealing, after the step of injecting the negative electrode material into the isolating pipe through a negative electrode material injector, firstly injecting a water sample into the annular cavity from the upper end opening of the annular cavity between a battery steel shell and the isolating pipe, wherein the water sample is pure water or water solution of which the solvent does not influence the positive and negative reactions of the alkaline manganese battery, and then sealing, wherein the sealing step is carried out, the negative electrode current collector externally sleeved with a sealing ring is packaged into the upper end opening of the isolating pipe through a sealing machine, at the moment, the negative electrode current collector is inserted into the negative electrode material, and meanwhile, the sealing ring extends outwards to seal the upper end opening of the annular cavity between the isolating pipe and the battery steel shell, so that the positive electrode ring is isolated from the negative electrode material and the negative electrode current collector; the addition amount of the water sample is limited by the fact that liquid can not splash during sealing.
The chemical reaction formula of the alkaline manganese cell is as follows:
total reaction zn+2mno of cell 2 +2H 2 O==Zn(OH) 2 +2MnOOH、
Cell negative electrode reaction Zn+2OH - == Zn(OH) 2 + 2e-、
Cell positive electrode reaction 2MnO 2 +2H 2 O + 2e- == 2MnOOH + 2OH - ，
The total reaction of the alkaline manganese cell is a reaction consuming pure water according to the chemical reaction principle of the alkaline manganese cell. When the battery reacts to the end, the active material in the battery is rich, but the water in the battery is less and less, so that the performance of the battery cannot be exerted. However, in view of the fact that in the existing manufacturing process of the alkaline manganese cell, the water content in the anode ingredients needs to be controlled to be 2.0% -3.5% of the total weight of the anode, when the water content is lower than 2.0%, a cell anode ring cannot be formed, and the anode powder has huge damage to a ring forming die; when the water content is higher than 3.5%, the demolding process in the manufacturing process of the positive electrode ring is difficult to realize, and in order to ensure that the operation of manufacturing the positive electrode ring is efficiently and smoothly carried out, the manufacturing water content of the positive electrode powder is usually controlled to be about 2.8%; meanwhile, the addition amount of the electrolyte in the step of injecting the electrolyte cannot be too high, the electrolyte needs to be guaranteed to be fully absorbed by the isolation tube and the positive electrode ring, otherwise, the electrolyte remained in the isolation tube can splash when the negative electrode material is injected, and the battery is easy to short-circuit, so that the purpose of supplementing the internal moisture of the alkaline manganese battery is not easy. In the existing alkaline manganese cell, in order to facilitate sealing, a wire binding machine is usually adopted to carry out wire binding on the outer side of one end of a cell opening before the sealing step ("wire binding", namely, a cell steel shell which is positioned on two sides of a wire binding head and rotates at a high speed is extruded inwards by a wire binding wheel so that an annular groove is formed on the outer wall of the cell steel shell, meanwhile, an annular raised line is correspondingly formed on the inner side of the cell steel shell 100), a collector with a sealing ring sleeved on the outer part of the collector in the sealing step moves downwards until the annular raised line is positioned in the middle of the sealing ring, at the moment, the outer peripheral surface of the sealing ring and the annular raised line are extruded and deformed, so that clamping and fixing of the sealing ring are realized, therefore, in order to avoid breakage of a positive electrode ring during wire binding, a certain height difference exists between the highest position of the positive electrode ring and the upper edge of a separation tube, so that an air chamber is reserved above the positive electrode ring after sealing, and is usually used as a storage chamber for gas generated during electrolyte material decomposition in the cell use process, so as to avoid leakage of the cell; moreover, the air chamber is very small in space and is generally easily ignored by humans. The inventor injects a proper amount of water sample into the air chamber after injecting the cathode material and before sealing, and utilizes the pure water absorbing capacity of the part of the anode ring, which is close to the upper end, to absorb the water sample, meanwhile, the redundant water sample can be temporarily stored in the air chamber, and in the using process of the battery, the water sample in the air chamber can be absorbed by the anode ring and is reused as a storage cavity of gas generated during electrolyte material decomposition in the using process of the battery, meanwhile, the high-power discharging performance and the high-current discharging performance of the alkaline manganese battery are greatly improved, the medium-current discharging performance and the low-current discharging performance are also improved to different degrees, and meanwhile, the utilization rate of active materials of the anode and the cathode is also improved, and the waste of resources is reduced. In addition, the operation of the method is simple, the operation of forging the positive electrode ring and the operation of injecting the negative electrode material are not influenced, and the production efficiency of the battery is prevented from being influenced.
The second object of the present invention is to provide a water replenishing device capable of improving the discharging performance of an alkaline manganese cell, which is applied to the method for improving the discharging performance of an alkaline manganese cell by replenishing water, wherein a water sample is injected into an annular cavity, the water replenishing device is arranged between a negative electrode material injector and a sealing machine, the water replenishing device comprises a liquid injecting pump, an inlet of the liquid injecting pump is communicated with a water sample storage device through a water inlet pipe, an outlet of the liquid injecting pump is connected with a water outlet pipe, the front end of the water outlet pipe extends to the position right above a positive electrode ring between a battery steel shell and an isolation pipe, and when the water replenishing device works, the battery steel shell sequentially carries out negative electrode material injection, water replenishing and sealing operation through the negative electrode material injector, the water replenishing device and the sealing machine. The water supplementing device is additionally arranged between the anode material injection machine and the sealing machine, so that the effect of improving the discharge performance of the alkaline manganese battery is achieved, and meanwhile, the water supplementing device is applied to the method for improving the discharge performance of the alkaline manganese battery through water supplementing, and the working efficiency of the step of injecting water samples into the annular cavity can be improved.
Preferably, the method for improving the discharge performance of the alkaline manganese cell by supplementing water can be improved as follows: the addition amount of the water sample accounts for 0.4-2.73% of the weight of the anode ring, overflow liquid during sealing caused by excessive water sample addition is avoided, and meanwhile, the effect of effectively improving the discharge performance of the battery cannot be achieved.
Preferably, the water supplementing device capable of improving the discharge performance of the alkaline manganese cell can be improved as follows: the injection pump preferably adopts a pneumatic quantitative injection pump, an air inlet of the quantitative injection pump is connected with the compressed air generator through an air inlet pipe, and an electromagnetic valve is arranged on the air inlet pipe.
Drawings
FIG. 1 is a schematic structural diagram of a water replenishing device capable of improving discharge performance of an alkaline manganese cell, wherein the direction indicated by an arrow is the flowing direction of liquid or gas;
fig. 2 is a cross-sectional view of the alkaline cell of the present invention after a sealing step has been performed.
Detailed Description
Embodiments of the present invention will now be described in detail with reference to the accompanying drawings:
referring to fig. 1 and 2, a method for improving discharge performance of an alkaline manganese cell by supplementing water is provided, and the method comprises the following steps: in the process of manufacturing the positive electrode ring 53, inserting the isolating tube 52, injecting the electrolyte, injecting the negative electrode material 54 (namely zinc paste), and sealing, after the step of injecting the negative electrode material 54 of the negative electrode material into the isolating tube 52 through a negative electrode material injector, firstly injecting the water sample 100 into the annular cavity 57 from the upper end opening 571 of the annular cavity 57 between the battery steel shell 51 and the isolating tube 52, wherein the water sample 100 is pure water or aqueous solution of which the solvent does not affect the positive electrode and negative electrode reactions of the alkaline manganese battery, and then performing the sealing step, wherein the sealing step is to seal the negative electrode collector 56 with the sealing ring 56 sleeved outside into the upper end opening of the isolating tube 52 through the sealing machine, at the moment, the negative electrode collector 55 is inserted into the negative electrode material 54, and simultaneously, the sealing ring 56 extends outwards to seal the upper end opening 571 of the annular cavity 57 between the isolating tube 52 and the battery steel shell 51, so that the positive electrode ring 53 is isolated from the negative electrode material 54 and the negative electrode collector 55; the addition amount of the water sample 100 is limited by the fact that liquid can not splash during sealing.
As shown in fig. 1, the present invention also provides a water replenishing device capable of improving the discharging performance of an alkaline manganese cell, which is applied to the method for improving the discharging performance of an alkaline manganese cell by replenishing water, and is provided with a water sample injection pipe 40 in the annular cavity, wherein the water replenishing device is arranged between a negative electrode material injection machine and a sealing machine (the negative electrode material injection machine and the sealing machine are all conventional and existing equipment, and the negative electrode material injection machine, the water replenishing device and the sealing machine are in a conventional sequential arrangement relationship, so that the negative electrode material injection machine and the sealing machine are not shown in the figure), the water replenishing device comprises a liquid injection pump 10, an inlet of the liquid injection pump 10 is communicated with a water sample storage device 30 through a water inlet pipe 20, an outlet of the liquid injection pump 10 is connected with a water outlet pipe 40, and a front end of the water outlet pipe 40 extends to a position right above a positive electrode ring 53 between a battery steel shell 51 and an isolation pipe 52 of a battery 50, and the battery steel shell 51 sequentially passes through the negative electrode material injection machine, the water replenishing device and the sealing machine to perform the operations of injecting negative electrode material 54, replenishing water and sealing. The water supplementing device is additionally arranged between the anode material injection machine and the sealing machine, so that the effect of improving the discharge performance of the alkaline manganese battery is achieved, and meanwhile, the water supplementing device is applied to the method for improving the discharge performance of the alkaline manganese battery through water supplementing, and the working efficiency of the step of injecting water samples into the annular cavity can be improved.
Taking an alkaline manganese cell (i.e., no. 5 alkaline manganese cell) of model LR6 as an example, the applicant carried out 8 examples (example 1-example 8) and 1 comparative example (comparative example 1) according to the above-described method and water replenishing device for improving discharge performance of alkaline manganese cells by water replenishing, and carried out performance tests of 1.5W interval, 1000mA pulse, 3.9 Ω interval, 10 Ω continuous discharge on alkaline manganese cells prepared in the 8 examples and 1 comparative example, respectively, the parameters and test results of the water replenishing steps in the 8 examples and 1 comparative examples were as shown in table 1 below:
TABLE 1
| LR6 | Water sample | The addition amount of the water sample (weight of the positive electrode) Percentage of the amount | 1.5W intermediate (minor) | 1000mA pulse Punching die (secondary) | 3.9 omega interval Put) (h) | 10 omega link Put (h) |
| Implementation of the embodiments Example 1 | Pure water | 0.40% | 105 | 450 | 7.89 | 19.5 |
| Implementation of the embodiments Example 2 | Pure water | 0.9% | 112 | 462 | 7.92 | 19.68 |
| Implementation of the embodiments Example 3 | Pure water | 1.36% | 118 | 468 | 8.16 | 19.86 |
| Implementation of the embodiments Example 4 | Pure water | 1.82% | 122 | 478 | 8.28 | 20.15 |
| Implementation of the embodiments Example 5 | Pure water | 2.27% | 128 | 495 | 8.51 | 20.68 |
| Implementation of the embodiments Example 6 | Pure water | 2.73% | 127 | 492 | 8.58 | 20.75 |
| Implementation of the embodiments Example 7 | Electrolyte for existing alkaline manganese cell | 2.27% | 100 | 455 | 8.10 | 19.70 |
| Implementation of the embodiments Example 8 | Existing alkali manganese diluted 3 times with pure water Electrolyte for battery | 2.27% | 115 | 471 | 8.23 | 20.02 |
| Comparison Example 1 | - | 0 | 100 | 442 | 7.80 | 19.2 |
Meanwhile, the applicant carried out 4 examples (example 9-example 12) and 1 comparative example (comparative example 2) according to the above-described method and water replenishing apparatus for improving discharge performance of alkaline manganese cell by replenishing water using alkaline manganese cell model LR03 (i.e., no. 7 alkaline manganese cell), and carried out performance tests of 1.5W interval, 1000mA pulse, 3.9 Ω interval, 10 Ω continuous discharge for alkaline manganese cell prepared in the 4 examples and 1 comparative example, respectively, with parameters and test results of the water replenishing step in the 4 examples and 1 comparative example as shown in table 2 below:
TABLE 2
As can be seen from tables 1 and 2: the various discharge modes of the No. 7 alkaline manganese cell and the No. 5 alkaline manganese cell prepared by water supplementing are improved to different heights, and the pure water selecting effect of the water sample is superior to that of the water solution (the existing electrolyte for the alkaline manganese cell or the diluent thereof and the like) which does not influence the anode-cathode reaction of the alkaline manganese cell. In addition, when the water sample addition amount is controlled to be 0.4-2.73% of the weight of the positive electrode ring, the performance of 1.5W intermittent discharge, 1000mA pulse, 3.9 omega intermittent discharge and 10 omega continuous discharge of the alkaline manganese cell can be improved, and meanwhile, water sample overflow during sealing can be avoided.
As can be seen from table 1: for the No. 5 alkaline manganese cell, the discharge performance of the alkaline manganese cell prepared by the method for improving the discharge performance of the alkaline manganese cell by water supplementing can be improved by 28%, 12%, 9.1% and 7.7% at the maximum respectively in the 1.5W interval, 1000mA pulse, 3.9 omega interval and 10 omega continuous discharge; for the 600mA intermittent discharge, 5.1 intermittent discharge, 24 European intermittent discharge and 20 European continuous discharge of the No. 7 alkaline manganese cell, the performances of the continuous discharge can be improved by 12.53%, 4.18%, 4.2% and 6.52% respectively.
Preferably, the water supplementing device capable of improving the discharge performance of the alkaline manganese cell can be improved as follows: the infusion pump 10 is preferably a pneumatic type quantitative infusion pump (e.g., a sea-air pump), and the air inlet of the quantitative infusion pump 10 is connected to the compressed air generator 60 through an air inlet pipe 70, and an electromagnetic valve 80 is provided on the air inlet pipe 70.
It should be noted that, the shape of the seal ring of the alkaline battery of the present invention is not limited to the specific shape shown in fig. 2, and may be any shape of the seal ring of the conventional alkaline battery, and the alkaline battery usually needs to be further subjected to the step of covering the negative electrode cover and the battery steel can blank after the sealing step, however, the covering of the negative electrode cover and the battery steel can blank also belong to the conventional steps of the conventional alkaline battery manufacturing process.
Claims (4)
1. A method for improving discharge performance of alkaline manganese cell by supplementing water comprises the following steps: in the process of manufacturing the positive electrode ring, inserting the isolating pipe, injecting electrolyte, injecting the negative electrode material and sealing, the method is characterized in that: after a step of injecting negative electrode materials into the isolation tube through a negative electrode material injector, firstly injecting water samples into the annular cavity from an upper end opening of the annular cavity between the battery steel shell and the isolation tube, wherein the water samples are pure water or water solution which does not affect the anode and cathode reactions of the alkaline manganese battery, the water solution which does not affect the anode and cathode reactions of the alkaline manganese battery is electrolyte or diluent thereof for the alkaline manganese battery, and then sealing the battery, wherein a negative electrode collector with a sealing ring sleeved outside is packaged into an upper end opening of the isolation tube through a sealing machine; the addition amount of the water sample is limited by the fact that liquid can not splash during sealing.
2. The water replenishing device is arranged between a negative electrode material injector and a sealing machine and comprises a liquid filling pump, an inlet of the liquid filling pump is communicated with a water sample storage device through a water inlet pipe, an outlet of the liquid filling pump is connected with a water outlet pipe, the front end of the water outlet pipe extends to the position right above a positive electrode ring between a battery steel shell and an isolation pipe, and when the water replenishing device is in operation, the battery steel shell sequentially carries out negative electrode material injection, water replenishing and sealing operation through the negative electrode material injector, the water replenishing device and the sealing machine.
3. A method for improving discharge performance of alkaline manganese cells by supplementing water according to claim 1, wherein: the addition amount of the water sample accounts for 0.4-2.73% of the weight of the anode ring.
4. The water replenishing device capable of improving discharge performance of the alkaline manganese cell according to claim 2, wherein: the quantitative liquid injection pump is a pneumatic quantitative liquid injection pump, an air inlet of the quantitative liquid injection pump is connected with the compressed air generator through an air inlet pipe, and an electromagnetic valve is arranged on the air inlet pipe.
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| CN110400941A (en) | 2019-11-01 |
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