WO1997007553A1 - Plaque d'electrode pour un accumulateur au plomb et procede de fabrication - Google Patents
Plaque d'electrode pour un accumulateur au plomb et procede de fabrication Download PDFInfo
- Publication number
- WO1997007553A1 WO1997007553A1 PCT/CN1996/000062 CN9600062W WO9707553A1 WO 1997007553 A1 WO1997007553 A1 WO 1997007553A1 CN 9600062 W CN9600062 W CN 9600062W WO 9707553 A1 WO9707553 A1 WO 9707553A1
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- WIPO (PCT)
- Prior art keywords
- lead
- fiber
- cadmium
- lead alloy
- fibers
- Prior art date
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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
- H01M6/42—Grouping of primary cells into batteries
- H01M6/46—Grouping of primary cells into batteries of flat cells
- H01M6/48—Grouping of primary cells into batteries of flat cells with bipolar electrodes
- H01M6/485—Side-by-side bipolar batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/14—Electrodes for lead-acid accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/70—Carriers or collectors characterised by shape or form
- H01M4/72—Grids
- H01M4/73—Grids for lead-acid accumulators, e.g. frame plates
-
- 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
- H01M6/42—Grouping of primary cells into batteries
- H01M6/46—Grouping of primary cells into batteries of flat cells
- H01M6/48—Grouping of primary cells into batteries of flat cells with bipolar electrodes
-
- 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
Definitions
- the present invention relates to an electrode plate used in a lead-acid battery and a method for manufacturing the same.
- a Chinese patent application CN 1 0 5 1 2 7 3 A entitled “Acid Wrench Shaped Positive Plate” with a publication date of May 8, 1991 discloses a pole pull. Two conductive plates with the same structure are superimposed, main ribs are arranged around the overlapping surface of the two conductive plates, each conductive plate is provided with an equal number of liquid inlet holes, and the overlapping surfaces of the two conductive plates are coated with Lead powder.
- the method is to thin the positive electrode grid to 4.0-7.5 MM, and at the same time thin the negative electrode grid accordingly, so that the lead-acid battery in the same tank electrode plate
- the relative increase in number means that the surface area increases and the polarization current during charge and discharge decreases. In this way, the specific energy is increased without affecting the service life.
- increasing the specific energy by reducing the thickness of the electrode plate to increase the surface area will generally affect the service life and strength of the electrode plate.
- an object of the present invention is to provide a polar plate with high specific energy, high power, long life, over-discharge resistance, and rapid charging used in lead-acid batteries, and a method for manufacturing the same.
- the present invention proposes such an electrode plate for a lead-acid battery, which is characterized in that it includes: an active matrix including lead fibers and cadmium-containing lead alloy fibers uniformly mixed and intertwined together, the lead fibers occupying 60-90% of the total weight of the substrate, and the surface of the lead fiber is plated with cadmium, and the plated cadmium accounts for 1-5 of the weight of the lead fiber
- a pull grid which cooperates with the active matrix and is used for current collection and conduction;
- a pole tab is used for electrical connection between pole plates, and the pole tab is electrically connected to the plate grid and fixed on the plate grid.
- the present invention also proposes a method for manufacturing an electrode plate, comprising the following steps: using lead, cadmium-containing lead alloy to produce lead fibers and lead alloy fibers by cutting, melting, or melt blowing;
- FIG. 1 is a front view of a lead-acid battery pole switch according to the present invention.
- FIG. 2 is a side view of the lead-acid battery pole shown in FIG. 1;
- FIG. 3 is a sectional view of another lead-acid battery electrode plate according to the present invention.
- FIG. 4 is a front view of the lead-acid battery pole shown in FIG. 3;
- FIG 5 is a front view of a type of tab used in the lead-acid battery electrode plate of Figure 1. This type of tab is attached to the grid after the active substrate is combined with the grid.
- FIG. 6 is a side view of the tab shown in FIG. 5.
- the electrode for a lead-acid battery provided by the present invention includes active substrates 3, 3 0 1, 3 0 2 and a trigger grid 2, 7 for current collection and conduction, and mechanical strength for enhancing the active substrate. Sheets 4, 5. Of course, the grids 2 and 7 also have the effect of strengthening the mechanical strength of the active matrix.
- the active matrix in the present invention is a mixture of lead fibers and lead alloy fibers. It should be noted that the term "fiber" used in the present invention refers to very thin strips. For example, lead fibers refer to very thin strips.
- Fine lead wire, and the "fiber” mentioned in the present invention is sometimes the same as the "fiber segment” in the following.
- the advantage of using fiber is that the fiber can increase the surface area of the active material and make the utilization of the active material. Improved, increased specific energy.
- AGM method non-woven papermaking
- AGM method non-woven papermaking
- the flow-forming reaction is performed, sufficient acid liquid can be ensured to facilitate the reaction.
- the fiber bundle can be composed of the same type of fibers or mixed fibers with a certain mixing ratio, but in general, if a large number of fibers are required, It is best to first mix the fibers in a certain proportion and then bundle them, and then mix between the bundles to make an active matrix.
- the active matrix produced by the above method has a felt-like or cloth-like structure.
- the matrix block made in the above manner and a kind completely made of lead alloy fiber can also be made.
- the lead alloy felts are placed at intervals, and they are combined together after light pressing to form an active matrix with better strength and current collection conductivity.
- the mixed fibers used in the present invention are mainly composed of lead fibers and lead alloy fibers having a certain weight ratio. In order to increase the current collecting conductivity and strength of the substrate or the plate, some other kinds of fibers and impregnating agents can also be added. However, lead fibers and lead alloy fibers are used as the main body, and without any other fibers, the lead-acid battery electrode of the present invention can be completely made. In the electrode of the present invention, the lead fiber accounts for the lead fiber and the lead alloy. 60%-90% of the total weight of the fiber, and all lead fibers are plated with cadmium, which accounts for 1-5% of their weight.
- the surface layer of the lead fiber When the active matrix is formed and the positive electrode is made, the surface layer of the lead fiber will generate ⁇ -P b 02 lattice; if it is used as the negative electrode, the surface of the lead fiber will still be blunt lead.
- the lead fiber used in the lead-acid battery electrode can react on the current after being energized, and the catalytic effect of cadmium plating on the surface can be used on the positive electrode.
- a crystal lattice with ⁇ "P b 0 2 is formed, and it develops from the surface to the deep layer, and finally the core is formed of pure lead, and the surface layer has a state of ⁇ " P b 0 2 .
- the ⁇ -P b ⁇ 2 crystal lattice of the surface layer reacts with the acid to form an electric charge, and the pure lead part of the core serves as a charge for the charge.
- the lead alloy fiber accounts for 1% of the total weight of the lead fiber and the lead alloy fiber. 0 -40%, and the surface may be plated with cadmium of 1 "5% of its total weight.
- 0" P b 0 2 will be formed on the surface layer of the lead alloy fiber in the positive electrode of a lead-acid battery. Crystal lattice; and the surface layer of the lead alloy fiber in the negative electrode plate forms pure lead. However, no matter in the positive plate or the negative plate, the interior of the lead alloy fiber always maintains the original alloy state.
- the core content of the present invention is to prepare an active matrix for a lead-acid battery pole electrode by mixing the two kinds of fibers in a certain ratio.
- the lead alloy fiber itself has high strength, good corrosion resistance, and good electrical conductivity. Therefore, after the matrix is mixed with the lead fiber, a current-collecting conductive grid can be melted on the matrix to meet the requirements.
- the poles require strength and current collector performance requirements in use, and can prevent damage to the plates and short circuits inside the battery.
- lead fibers mainly play a role in generating electric charges
- lead alloy fibers mainly play a role in collecting current and supporting the entire plate.
- the surface of the positive electrode formed by the two fibers can always maintain the ⁇ "P b 0 2 lattice, so that the electrode plate can maintain a high power storage state.
- the surface of these two fibers is plated with about 1-5% cadmium. Therefore, during the energization reaction, a group of lead acid connected to the DC positive electrode was connected. The surface of the battery electrode plate forms a ⁇ "P bo 2 lattice under the catalysis of cadmium.
- the surface layer of lead fiber will always maintain the ⁇ "P b 0 2 lattice under the catalytic action of cadmium contained in the lead alloy fiber. Because ⁇ -P The micro surface area of b 0 2 is nearly 20 times larger than that of 0! -Pb 0 2 , so ⁇
- ⁇ -P 0 2 is generated after the surface of the lead fiber and the surface of the lead alloy fiber are directly energized to generate a reaction, so the connection between ⁇ -P b 0 2 and the fiber is very tight, and it is not easy to fall off, and the Both fibers maintain the state of pure lead or lead alloy inside, so they can withstand the vibration generated during high-current pulse charging.
- ⁇ -P b 0 2 is not isocrystalline with sulfuric acid, lead sulfate generated after discharge does not form nodules on the surfaces of these two fibers. Deep layers of lead fibers can also generate ⁇ "P b
- cadmium electroplating Another function of cadmium electroplating is that after the active matrix is formed, the present invention uses electric spark discharge to micro-melt the bonding points of each fiber in the mixed fiber, so that the entire electrode is pulled inside during the flow reaction. Form a reliable current collecting conductive network, while further enhancing the The connection strength increases the service life of the plates.
- EDM technology requires an oxide layer on the surface of the fibers and lead alloy fibers. After cadmium plating, cadmium can replace the oxide layer, so that EDM technology can be realized.
- the lead alloy fiber preferably contains 0.5 to 5% of cadmium, 1 to 7% of antimony, and 8 to 9 to 8.5% of lead in its total weight.
- the lead alloy fiber made by the above formula is mainly used in ordinary storage batteries, and the cost is low.
- the composition of another lead alloy of the lead alloy fiber may be, for example, silver containing 0.1-0.5 ⁇ 3 ⁇ 4 by weight ratio, calcium of 0 8-0.5 9 & 0, 5 -5% cadmium and 9 4 -9 9. 3 2% lead.
- the lead alloy fiber made with this formula has better corrosion resistance and can also improve the service life of the battery.
- the active matrix of the present invention may include other fine fibers. These fine fibers include carbon fibers and other organic chemical fibers.
- the main purpose of adding carbon fiber is to make up for the insufficient conductivity of lead alloy fibers. Especially when the lead alloy fiber occupies a relatively small amount of weight and the current collecting effect is not good, adding a certain amount of carbon fiber does not significantly increase the weight and can also achieve a good current collecting effect.
- the carbon fiber is added in an amount of 0.1 to 0.5% based on the weight of the lead fiber and the weight of the lead alloy fiber.
- organic chemical fibers such as acrylic fibers, which are resistant to acid corrosion and have good tensile resistance, can also be added. These fibers are added mainly to enhance the strength of the entire pole.
- the added organic chemical fiber can produce a binding effect similar to a rope or a net, so that various fibers are firmly integrated.
- the amount of organic chemical fiber added should be 0.1-0.5% of the total weight of the lead fiber and the lead alloy fiber.
- the impregnating agent is preferably polytetrafluoroethylene. After the entire active matrix is impregnated, movement between the fibers can be prevented to loosen the active matrix and cause a decrease in strength.
- the impregnating agent is added in an amount of 0.1-0.5% by weight of the substrate, and in addition, 0.1-0.5% of carbon powder can be added to the active substrate, for example, acetylene carbon black, expandable graphite powder, wood Toner, activated toner, etc.
- carbon powder can be added to the active substrate, for example, acetylene carbon black, expandable graphite powder, wood Toner, activated toner, etc.
- the carbon fiber, organic chemical fiber and carbon powder described above are added when various fibers are mixed before the active matrix is formed, and the impregnating agent is added after the active matrix is formed.
- the pull grid 2 serves as both a current collector and an active matrix
- the N96 / 00062 mechanical device is integrally fixed to the active substrate 3. During fabrication, it is best to form the grid 2 on the base 3 by melting directly on the active base 3.
- the molten grid 2 is formed of the base 3's own material, so it has a space between the grid 3 and the base 3. Very good electrical connection and therefore less internal resistance than ordinary poles. At the same time, reducing inactive materials is equivalent to increasing the weight ratio of active materials.
- the grid 2 has grid bars 2 1. These grids 2 1 are preferably radial and converge to the connection between the grid and the tabs to be mentioned below, so as to facilitate current collection and conduction. It is also possible to use two pre-made grid-like trigger grids 2 (not shown), which are placed on both sides of the active base 3 and melt-pressed into the base 3 to form a whole.
- the grid 2 can also adopt a porous network structure (not shown) with large holes made of lead alloy fibers, and then impregnate the lead paste that is commonly used now, so as to produce more comprehensive performance than ordinary paste-type electrode plates.
- a good battery pole ⁇ is connected with a pole ear 1 on the pole grid 2 for the connection between the pole plates.
- Tab 1 can be used as a base
- the tab 1 is a separate component such as a lead block 1 0 1 ( 5 and 6), and has a groove 10 corresponding to the thickness of the active substrate 3 , which can be fixed on the edge of the formed grid 2 by melting.
- the composition of the lead alloy fiber felt mentioned above may be the same as that of the lead alloy fiber in the active matrix 3. However, since the main role of the lead alloy fiber felt is to increase the strength of the pole and the current collector, the lead alloy The diameter of the fiber should be thicker.
- a thicker lead alloy fiber composed of a plurality of lead alloy fibers can be used.
- another embodiment of the device for ensuring the mechanical strength of the substrate according to the present invention is an implementation
- the device is composed of lead and a bimetal sheet with excellent conductive metal.
- the metal sheet is used to carry the active substrates 3 0 1, 3 2 2, and is also used to replace the series connected cells.
- the internal resistance of the part, which constitutes a bipolar pole at the same time, is very low, and the housing material is used less.
- the shapes of the active substrates 3 0 1 and 3 2 2 connected on both sides of the bimetal sheet structure are circular in this embodiment.
- the grid 7 in this embodiment, is a plurality of radial indentations formed on the substrates 3 0 1, 3 2.
- the inner end 9 1 of the notch 9 is semicircular and is concentric with the respective circular active matrix.
- the width of the notch 9 is equal to the diameter of the semicircle.
- the bimetal structure is composed of a thin metal plate 4 coated with a thin layer of lead on the surface and a lead 5 that is tightly fixed to the metal plate 4, and the central part of the bimetal structure There is a semi-circular through hole 8 corresponding to the shape of the semi-circular inner end 9 1 of the elongated notch 9 on the active substrate 3 0 1, 3 0 2.
- the metal sheet should be made of a metal with a certain strength and excellent electrical conductivity. Generally, pure copper sheet is better. Moreover, the surface of the metal sheet and the surface of the lead sheet should be rough, that is, have small protrusions or pits, so that the copper sheet 4, the lead sheet 5, and the two active substrates 3 0 1 and 3 0 2 are in a good condition. Connection status.
- the method adopted in the present invention is to perform double-sided punching of the copper sheet 4 and then fix the lead sheet 5 with a small thorn 6 cast on one side to form a bimetallic sheet structure. The copper sheet is used to connect the small thorn 6 on one side of the lead sheet. The height should be slightly greater than the thickness of the lead sheet.
- the height of the small ridges used to connect one side of the active substrate 3 2 2 is also slightly larger than the thickness of the active substrate 3 2 2.
- the small thorns 6 on the lead sheet 5 are required to be thicker than the active substrate 3 0 1 to ensure that the pinning and fixing effect can be achieved.
- the side with the lead 5 on the bimetal sheet as the positive electrode because the anode has a dissolving effect, which can prevent the copper sheet 4 from entering the electrolyte due to the dissolving effect and affecting the performance of the battery.
- the outer periphery of the bi-metal sheet structure should have raised edges 4 1, 5 1. These edges are used to fit the gasket, and to protect the gasket during use.
- the semi-circular through-holes 8 on the bimetallic sheet structure after the circular active substrates 3 01 and 3 02 are installed on the two metal sheets, they should be filled with pure lead to form the electrode connection points, that is, the electrode Ear, and its thickness should be slightly larger than the thickness of the entire plate.
- the electrode When using the above electrode plate to make a battery, the electrode should be placed on the positive electrode (that is, the side with the lead plate on the bimetal sheet) and placed horizontally upward. This can prevent the delamination phenomenon due to the difference in the density of the electrolyte during the electrochemical reaction.
- the oxygen generated on the positive electrode can be run upwards, and the hydrogen can be synthesized with water on the negative electrode, so as to achieve a fully sealed oxygen cycle.
- Example 1 and 2 show Example 1 of the present invention.
- lead fibers and lead alloy fibers are prepared by methods such as melting or cutting, and melt blowing.
- the diameter of the lead fibers produced may be, for example, 8 ⁇ m.
- the diameter of the lead fibers produced may be, for example, 8 ⁇ m.
- the surface of each fiber was plated with cadmium, which accounted for 2% by weight of lead fiber and lead alloy fiber, respectively.
- the components of the lead alloy fibers used were 2% antimony by weight, 2% cadmium, and 9 6 «3 ⁇ 4 lead. These fibers were cut into small So lead fibers and each segment was cut to a length of 1 mm. Lead alloy fiber cut length of each segment is 2.5 mm.
- the lead fiber section and the lead alloy fiber section are mixed in a weight ratio of 9: 1, and then poured into a container filled with glycerin. After being stirred evenly, it is poured into a container with many holes at the bottom.
- the vacuum pump and the rubber piston located on the upper part of the container that match the diameter of the container can be used to extract glycerin by using the method of pressing up and down to produce a blank with uniform porosity. After the compact is filtered and pumped, the large Part of the glycerol was aspirated. After washing and drying.
- the reason why the present invention uses glycerin is to use the viscosity of the solvent itself, so that the fiber segment located therein can move in three dimensions when stirred. To achieve the uniform mixing between various fiber segments and the entanglement effect between each other. A pressure is then applied to the billet to further shape it. Next, the billet is put into a mold, and the grid 2 with radial grids is pressed by electric spark discharge. Finally, as shown in FIG. 5 and FIG. 6, the melt has a groove 10 corresponding to the thickness of the plate.
- the lead block 1 0 1 can be used to make poles for lead-acid batteries.
- the grid 2 is a radial or other shape frame composed of lead fibers and lead alloy fibers.
- the shape of the frame is square and the active matrix 3 It is a wool felt-like porous body composed of lead fibers and lead alloy fibers interwoven with each other. Its appearance is plate-shaped.
- the active matrix 3 is embedded between the spaces in the grid frame.
- the tab 1 has a groove corresponding to the thickness of the grid 2. 10 lead blocks, through which the tabs can be fixed on the edge of the grid.
- Example 2
- a lead fiber segment with a diameter of 800 m and a length of 2.5 m m and a lead alloy fiber with a diameter of 250 m and a length of 25 m m were prepared by the method of Example 1.
- the lead alloy fiber was 0.5% cadmium, 1%
- lead fiber and lead alloy fiber is respectively plated with 5% of cadmium, and the above lead fiber and lead alloy fiber are mixed in a weight ratio of 6: 4.
- Into a container containing water glass solvent add 0.1% «3 ⁇ 4 acrylic fiber, 0.1% carbon fiber, and 0.1% toner to the total weight of the two. The water glass was then pulled out in the same manner as in Example 1 to dry the compact.
- the lead alloy fiber with a diameter of 250 m and a length of 25 mm was also made into a lead alloy fiber felt for matching with the billet according to the method described above.
- the lead alloy consists of 7% antimony, 5% cadmium, and 88% lead.
- the layers are combined into one body by heating and pressing, and the grid-shaped pull grid is melted out, and then the upper electrode 1 is melted. That is, the pole for the lead-acid battery of the present invention is made.
- the pole in this example has the same structure as that described in Example 1, except that the grid 2 is interwoven with two layers of active matrix material sandwiched by a layer of lead alloy fibers.
- the grid and the active matrix 3 contain 0.1% «3 ⁇ 4 of acrylic fiber, 0.1% carbon fiber, and 0.1% carbon powder.
- two round substrates 3 0 1 and 3 2 are prepared by the method as in Example 1, and the long notch 9 extends from one side of the green block to the center of the green block.
- the inner end 9 1 of the elongated notch 9 on the base is semicircular and is concentric with the circular base.
- an indentation 7 can be melt-pressed, and the temperature during the melt-press is lower than the melting point of lead.
- the circular substrates 3 0 1 and 3 2 are made of lead fiber with a diameter of 2 m, a length of 1 mm, a surface of 2% cadmium plating, and a diameter of 5 ⁇ , a length of 2.0 mm, and a surface of 2% cadmium plating. It is obtained, and the lead fiber and the lead alloy fiber are mixed in a weight ratio of 9: 1.
- the flux used was glycerin.
- One piece of the bimetal sheet structure is composed of a copper sheet 4 of 0.5 mm thickness. The two sides of the sheet 4 are punched with small thorns, and the surface is plated with lead of 0.2 mm, and then the thickness is 0.5.
- the lead sheet 5 with small thorns 6 cast on the surface is fixed to one and the center of the bimetal sheet structure has a semi-circular inner end with a long gap 9 on the round billet 3 0 1, 3 0 2 9 1 shape corresponding through hole 8.
- a small round bar was nailed on each side of the bimetal sheet with small spikes, and the long notches 9 on the two bases 3 0 1 and 3 0 2 were oriented in a direction of 3 ⁇ 4o.
- the hole 8 and the semi-circular end 9 1 are filled with pure lead, and the height of the filled pure lead is slightly larger than the thickness of the entire electrode plate, and another form of lead-acid battery electrode can be manufactured ⁇ «Example 4
- a lead fiber segment with a diameter of 60 / m, a length of 20 mm, and a lead alloy fiber with a diameter of 200 mm and a length of 25 mm was prepared by the method described in Example 1.
- the lead alloy fiber was composed of 7% antimony, Composition of 5% cadmium and 88% lead. And the surface of lead fiber and lead alloy fiber are each plated with 4% of cadmium.
- the lead fiber and the lead alloy fiber are mixed in a weight ratio of 7: 3, poured into a salad oil solvent and stirred evenly, and then poured into a porous container at the bottom. After natural penetration, a billet with uniform pores can also be prepared. After pressure filtration and suction, washing and drying were performed to obtain a desired shape.
- a lead alloy fiber felt was prepared according to the method shown in Example 2 .
- the felt is made of lead alloy fibers with a diameter of 220 m, containing 5% antimony, 3% cadmium, and 92% lead.
- three lead alloy fiber felts and two billets are stacked and melted together.
- a grid-shaped spanner composed of two lead alloys is sandwiched in the center and melted.
- the pole grid 2 is a grid-like frame made of a lead alloy.
- the active matrix 3 is formed by pressing three porous alloy fiber porous bodies and two mixed fiber porous bodies. Therefore, the active substrate 3 and the two layers of the grid 2 constitute a pole plate with a layered structure, and the tab 1 is still a lead block with a corresponding groove, and is fixed to the edge of the grid 2 by the groove.
- a green compact was prepared according to a similar method as described in Example 2.
- the green compact consisted of a lead fiber segment with a diameter of 50 mm and a length of 15 mm and a lead alloy fiber segment with a diameter of 130 mm and a length of 15 mm.
- Lead alloy fibers and lead fibers are mixed at a weight ratio of 2: 8.
- Lead alloy fibers are composed of 4.5% antimony, 5% cadmium, and 90.5% lead.
- the lead alloy fibers in the lead alloy felt include 3% antimony, 4% cadmium, and 93% lead.
- the lead fiber segment used to manufacture the electrode for lead-acid batteries has a diameter of 40 ⁇ m and a length of 20 mm.
- the lead alloy fiber segment has a diameter of 70 ⁇ m and a length of 10 mm.
- Lead alloy fibers consist of 7% antimony, 2.5% cadmium, and 90.5% lead. Both fibers are plated with 2% cadmium by weight.
- the lead alloy fiber felt uses a lead alloy fiber with a diameter of 60 ⁇ m and is composed of 7% antimony, 5% cadmium, and 88% lead.
- the electrode plates for lead-acid batteries were manufactured according to the method described in Example 1-5 above.
- the diameter of the lead fiber segment used was 15 ⁇ , the length was 5 mm, the diameter of the lead alloy fiber was 8 m, and the length was 2 mm. It is composed of 0.1% silver, 0.88% calcium, 0.5% cadmium, and 99.2% lead.
- the surface of lead fiber and lead alloy fiber is respectively plated with cadmium, which accounts for 5% of its own weight. The mixing weight ratio is 6.5: 3.5.
- the lead alloy fibers used in the lead alloy fiber felt had a diameter of 7 rn, a length of 15 mm, and consisted of 0.2% silver, 0.3% calcium, 2% cadmium, and 97.5% Lead composition.
- Example 8 If the method described in Example 2 is used, the added acrylic fiber is 0.05%, the carbon fiber is 0.05%, the carbon powder is 0.05%, and the lead prepared according to the method described in Example 1-5. Electrode plates for acid batteries, which can be impregnated with 0.1-0.5% polytetrafluoroethylene.
- Example 8 Electrode plates for acid batteries, which can be impregnated with 0.1-0.5% polytetrafluoroethylene.
- the acid battery electrode is manufactured according to the method described in Example 1-5.
- the diameter of the lead fiber segment used is 5 Mm, the length is 3 mm, and the surface is plated with cadmium of 5% of its weight.
- Lead alloy fibers have a diameter of 20 Mm and a length of 5 mm. The surface is not cadmium-plated.
- Lead alloy fibers consist of 0.5% silver, 0.5% calcium, 5% cadmium, and 94% lead.
- the lead alloy fiber made of lead alloy fiber felt has a diameter of 7 ⁇ m and is composed of 0.1 «3 ⁇ 4 of silver, 0.8% of calcium, 0.5% of cadmium, and 99.2% of lead. .
- the lead powder may be impregnated by a chemical impregnation method.
- the electrode plates for lead-acid batteries were manufactured according to the method described in Example 1-5.
- the diameter of the lead fiber used was 2 m, the length was 0.7 mm, and the surface was plated with cadmium to account for 1 «3 ⁇ 4, lead alloy.
- the fiber has a diameter of 2 ⁇ ⁇ and a length of 0.7 mm.
- the surface is 1.5% of cadmium plated, and consists of 0.3% silver, 0.2 calcium, 2% cadmium and 9 7. 5% lead composition.
- the lead alloy fiber felt in the lead alloy fiber felt has a diameter of 2 ⁇ and is composed of 0.5% silver, 0.5% calcium, 5% cadmium, and 94% lead.
- one of the bimetallic pieces was a silver piece. After the lead-acid battery electrode was prepared according to the method described in Example 1 "5, the lead powder was directly immersed.
- the pure lead fiber in the fiber felt is used as an active power storage material, and the surface area of the pure lead fiber is larger than those of particles, lead powder paste, and lead foil, the utilization rate of the active material is improved, and the specific energy is increased.
- the surface layer of lead fiber keeps transforming into the ⁇ -type crystal lattice with high storage capacity and lead dioxide crystal state under the charging state, the surface area, utilization rate and specific energy of active material are further improved fundamentally.
- the grid and lugs are directly melted and extruded on the lead metal fiber felt, thereby reducing the weight occupied by the grid, increasing the relative content of the active storage material, and improving the specific energy.
- the active matrix is made of lead alloy fibers and lead fibers uniformly mixed, the fibers are overlapped together, and the lap points are fused together by melting and pressing.
- the frame and the tabs so the entire fiber felt forms a complete network of conductive pathways, and at the same time forms a porous integral pole with high organic mechanical strength, so it is not easy to drop powder, slag, long plate life, low internal resistance, High current fast discharge, high specific power, fast charging and discharge resistance.
- the bimetal sheet By combining two active substrates and a double metal sheet structure to form a lead-acid battery pole, the bimetal sheet not only replaces the insulating separator between battery cells, but also serves as a series of poles between single cells.
- the role of the electrical connection parts, and the bimetal sheet is made of a highly conductive metal sheet, which has a large contact area with the substrate and is also very thin, so that the internal resistance of the battery can be further reduced, thereby further reducing the weight of the case and the weight of the lead connection. , Thereby further improving the specific power and specific energy of the battery.
- the lead-acid battery using the electrode plate of the present invention can achieve the following main indexes (traction heavy load discharge) after actual testing.
- A. Specific energy can be as low as 5 2 Wh / kg
- Specific power can be as low as 150 W / kg
- the life can be as low as 800 cycles
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Cell Electrode Carriers And Collectors (AREA)
- Secondary Cells (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/011,564 US6232018B1 (en) | 1995-08-14 | 1996-08-13 | Electrode plate for a lead acid accumulator and its producing method |
AU67307/96A AU6730796A (en) | 1995-08-14 | 1996-08-13 | An electrode plate for lead-acid accumulator and producing method thereof |
EP96927499A EP0874411A4 (en) | 1995-08-14 | 1996-08-13 | AN ELECTRODE PLATE FOR A LEAD ACID ACCUMULATOR AND PRODUCTION METHOD THEREFOR |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN95219415.5 | 1995-08-14 | ||
CN95109703A CN1143269A (zh) | 1995-08-14 | 1995-08-14 | 铅酸蓄电池极板及其制造方法 |
CN95219415U CN2235156Y (zh) | 1995-08-14 | 1995-08-14 | 铅酸蓄电池极板 |
CN95109703.2 | 1995-08-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997007553A1 true WO1997007553A1 (fr) | 1997-02-27 |
Family
ID=25743738
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN1996/000062 WO1997007553A1 (fr) | 1995-08-14 | 1996-08-13 | Plaque d'electrode pour un accumulateur au plomb et procede de fabrication |
Country Status (5)
Country | Link |
---|---|
US (1) | US6232018B1 (zh) |
EP (1) | EP0874411A4 (zh) |
AU (1) | AU6730796A (zh) |
RU (1) | RU2152111C1 (zh) |
WO (1) | WO1997007553A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100502408B1 (ko) * | 2002-06-21 | 2005-07-19 | 삼성전자주식회사 | 액티브 터미네이션을 내장한 메모리 장치의 파워-업시퀀스를 제어하는 메모리 시스템과 그 파워-업 및 초기화방법 |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003038933A2 (en) * | 2001-10-27 | 2003-05-08 | Sarosi Gyoergy Andras | Grid for lead battery, method of manufacturing, and battery plate |
US8551660B2 (en) | 2009-11-30 | 2013-10-08 | Tai-Her Yang | Reserve power supply with electrode plates joined to auxiliary conductors |
RU2571823C2 (ru) * | 2011-10-04 | 2015-12-20 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Юго-Западный государственный университет" (ЮЗГУ) | Электрод свинцово-кислотного аккумулятора (варианты) |
HU230572B1 (hu) | 2014-05-20 | 2016-12-28 | Andrew Sárosi George | Akkumulátorrács kialakítás, az akkumulátorrácsokkal kialakított akkumulátor cella és az akkumulátor cellákkal kialakított akkumulátor |
CN104241708B (zh) * | 2014-09-11 | 2016-04-20 | 浙江超越动力科技股份有限公司 | 一种高储能长寿命铅酸蓄电池 |
CN104347879B (zh) * | 2014-09-11 | 2016-08-24 | 浙江超越动力科技股份有限公司 | 一种铅酸蓄电池预混复合负极添加剂 |
US11936032B2 (en) | 2017-06-09 | 2024-03-19 | Cps Technology Holdings Llc | Absorbent glass mat battery |
KR20200014317A (ko) | 2017-06-09 | 2020-02-10 | 씨피에스 테크놀로지 홀딩스 엘엘씨 | 납산 배터리 |
CN110247059A (zh) * | 2018-03-11 | 2019-09-17 | 任久东 | 一种铅酸蓄电池板栅 |
CN109411688A (zh) * | 2018-08-30 | 2019-03-01 | 广州倬粤动力新能源有限公司 | 板栅与极耳的连接方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3909292A (en) * | 1971-10-27 | 1975-09-30 | Matsushita Electric Ind Co Ltd | Lead storage battery |
EP0085109A1 (en) * | 1981-07-31 | 1983-08-10 | Sanyo Electric Co., Ltd | Lead storage battery and method of producing the same |
US5098799A (en) * | 1990-11-27 | 1992-03-24 | Globe-Union Inc. | Battery electrode growth accommodation |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3702019A (en) * | 1971-04-13 | 1972-11-07 | Westinghouse Electric Corp | Method of making diffusion bonded battery plaques |
US3859084A (en) * | 1971-09-30 | 1975-01-07 | Gould Inc | Cadmium-antimony-lead alloy |
FR2331159A1 (fr) * | 1975-11-06 | 1977-06-03 | Dba | Support d'electrodes pour batterie d'accumulateur et procedes de fabrication d'un tel support |
US4456666A (en) * | 1982-10-13 | 1984-06-26 | Gnb Batteries Inc. | Titanium wire reinforced lead composite electrode structure |
DE3922424C2 (de) * | 1989-07-07 | 1994-02-03 | Hagen Batterie Ag | Elektrode für elektrochemische Zellen und Verfahren zur Herstellung einer Gitterplatte für eine Elektrode |
CN1040594C (zh) * | 1990-09-07 | 1998-11-04 | 陈江西 | 一种铅蓄电池的酸性板形正极板 |
-
1996
- 1996-08-13 RU RU98104090/09A patent/RU2152111C1/ru not_active IP Right Cessation
- 1996-08-13 US US09/011,564 patent/US6232018B1/en not_active Expired - Fee Related
- 1996-08-13 EP EP96927499A patent/EP0874411A4/en not_active Withdrawn
- 1996-08-13 AU AU67307/96A patent/AU6730796A/en not_active Abandoned
- 1996-08-13 WO PCT/CN1996/000062 patent/WO1997007553A1/zh not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3909292A (en) * | 1971-10-27 | 1975-09-30 | Matsushita Electric Ind Co Ltd | Lead storage battery |
EP0085109A1 (en) * | 1981-07-31 | 1983-08-10 | Sanyo Electric Co., Ltd | Lead storage battery and method of producing the same |
US5098799A (en) * | 1990-11-27 | 1992-03-24 | Globe-Union Inc. | Battery electrode growth accommodation |
Non-Patent Citations (1)
Title |
---|
See also references of EP0874411A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100502408B1 (ko) * | 2002-06-21 | 2005-07-19 | 삼성전자주식회사 | 액티브 터미네이션을 내장한 메모리 장치의 파워-업시퀀스를 제어하는 메모리 시스템과 그 파워-업 및 초기화방법 |
Also Published As
Publication number | Publication date |
---|---|
US6232018B1 (en) | 2001-05-15 |
AU6730796A (en) | 1997-03-12 |
EP0874411A4 (en) | 2001-02-21 |
RU2152111C1 (ru) | 2000-06-27 |
EP0874411A1 (en) | 1998-10-28 |
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