CN1220498A - Electrode of charging battery and method and equipment for making electrode - Google Patents
Electrode of charging battery and method and equipment for making electrode Download PDFInfo
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- CN1220498A CN1220498A CN97122056A CN97122056A CN1220498A CN 1220498 A CN1220498 A CN 1220498A CN 97122056 A CN97122056 A CN 97122056A CN 97122056 A CN97122056 A CN 97122056A CN 1220498 A CN1220498 A CN 1220498A
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- 238000000034 method Methods 0.000 title claims abstract description 22
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 67
- 239000000843 powder Substances 0.000 claims abstract description 65
- 239000000463 material Substances 0.000 claims abstract description 29
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 claims abstract description 25
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000001257 hydrogen Substances 0.000 claims abstract description 13
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 13
- 229910052802 copper Inorganic materials 0.000 claims abstract description 12
- 239000010949 copper Substances 0.000 claims abstract description 12
- 229910000881 Cu alloy Inorganic materials 0.000 claims abstract description 8
- 238000011049 filling Methods 0.000 claims abstract description 4
- 239000011149 active material Substances 0.000 claims description 44
- 238000005520 cutting process Methods 0.000 claims description 16
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 11
- 229910045601 alloy Inorganic materials 0.000 claims description 10
- 239000000956 alloy Substances 0.000 claims description 10
- 239000006260 foam Substances 0.000 claims description 7
- 238000005187 foaming Methods 0.000 claims description 7
- 238000007747 plating Methods 0.000 claims description 7
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 5
- 150000002910 rare earth metals Chemical class 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 229910000570 Cupronickel Inorganic materials 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 239000000839 emulsion Substances 0.000 claims description 2
- 239000012634 fragment Substances 0.000 claims description 2
- -1 polytetrafluoroethylene Polymers 0.000 claims description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000003825 pressing Methods 0.000 abstract 2
- 239000013543 active substance Substances 0.000 abstract 1
- 239000011230 binding agent Substances 0.000 description 10
- 229910003460 diamond Inorganic materials 0.000 description 9
- 239000010432 diamond Substances 0.000 description 9
- 229910018095 Ni-MH Inorganic materials 0.000 description 7
- 229910018477 Ni—MH Inorganic materials 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 239000002002 slurry Substances 0.000 description 6
- 238000005245 sintering Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 230000036632 reaction speed Effects 0.000 description 4
- 238000007613 slurry method Methods 0.000 description 4
- 229910002335 LaNi5 Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 241000237509 Patinopecten sp. Species 0.000 description 2
- 238000005411 Van der Waals force Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000007772 electrode material Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 235000020637 scallop Nutrition 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011981 development test Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000011267 electrode slurry Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical group C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003405 preventing effect Effects 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0416—Methods of deposition of the material involving impregnation with a solution, dispersion, paste or dry powder
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/01—Alloys based on copper with aluminium as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/02—Alloys based on copper with tin as the next major constituent
-
- 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
- H01M4/04—Processes of manufacture in general
-
- 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
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
-
- 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
- H01M4/04—Processes of manufacture in general
- H01M4/043—Processes of manufacture in general involving compressing or compaction
- H01M4/0435—Rolling or calendering
-
- 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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/383—Hydrogen absorbing alloys
- H01M4/385—Hydrogen absorbing alloys of the type LaNi5
-
- 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/621—Binders
- H01M4/622—Binders being polymers
- H01M4/623—Binders being polymers fluorinated polymers
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/661—Metal or alloys, e.g. alloy coatings
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- H—ELECTRICITY
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- 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
- H01M4/66—Selection of materials
- H01M4/661—Metal or alloys, e.g. alloy coatings
- H01M4/662—Alloys
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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
- 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
- H01M4/74—Meshes or woven material; Expanded metal
- H01M4/745—Expanded metal
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- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/24—Electrodes for alkaline accumulators
- H01M4/32—Nickel oxide or hydroxide electrodes
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- 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
- H01M4/80—Porous plates, e.g. sintered carriers
- H01M4/808—Foamed, spongy materials
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The present invention relates to an electrode of charging cell and its manufacturing method and equipment. In particular, it relates to the electrode of nickel-cadium and nickel-hydrogen cell and its manufacturing process. Said process includes the following steps: using copper,copper alloy,neckel mesh component or nickel and nickel-plated skeleton, filling the above-mentioned material up with matched powdered active substance, and pressing them so as to obtain the invented electrode. The cell made up by using said invented electrode possesses uniform performance, large capacity, low energy consumption and cost. the equipment for manufacturing said electrode includes its key portion powder material box and powder possessing wheel, the box has an upper-large lower-small internal cavity and containing at least one step and powder-pressing wheel to implement said invention.
Description
The present invention relates to rechargeable battery, more specifically, relate to rechargeable battery particularly improvement and the electrode manufacturing method and the equipment thereof of cadmium nickel and nickel-hydrogen battery electrode skeleton.
Rechargeable battery has obtained great development in recent years, particularly because the battery development that develops into of the electronic apparatus of mobile phone and so on provides bright prospects, also proposed more and more higher requirement simultaneously: specific energy wants big, and the life-span will be grown, cost is low, and the battery performance consistency will be got well.
The improvement of rechargeable battery performance, basically the improvement and the electrode manufacturing method that depend on electrode skeleton, cadmium nickel and Ni-MH battery are the kinds of using morely in the rechargeable battery, at present traditional electrode structure and manufacture method are that skeleton uses foaming nickel, active material adding additives furnishing slurry, insert skeleton, oven dry is pressed into electrode again.The problem that this kind technology exists is that nickel is not the best as its conductance of framework material; Have to contain binding agent in the slurry occupation rate of active material is reduced, directly reduce battery capacity, increase internal resistance, the speed of the reaction speed that slows down and Electolyte-absorptive.In addition, this kind complex process, every plate electrode slurry fill the weight consistency and uniformity undesirable, promptly the amount difference of each plate electrode active material is big, the coating uniformity coefficient low, cause the battery performance discreteness big.Complicated technology causes cost high.Slurry technology has determined essential oven dry, and energy consumption is very big.
For Ni-MH battery, the application tradition is coated with sizing process more fatal shortcoming, the active material of this kind battery uses hydrogen adsorbing alloy, mostly be rare earth alloy, LaNi5 for example, their characteristics are that character is active, be afraid of oxidation, in preparation and transportation, should accomplish to avoid contact, but pulling phase must have water, therefore essential the oven dry when making electrode with oxygen, be dried to and to a certain degree have alloy and expose with gas phase oxygen and meet, also exist moisture this moment, and this three-phase coexistence state is the strongest situation of oxidation, will make its decreased performance, oxidation class also can inwardly extend from the surface, destroy the structure of hydrogen adsorbing alloy, the Ni-MH battery life-span is descended, also caused the inconsistency of battery performance.In order to solve the problem of above existence, should get rid of and use binding agent to avoid its raising that hinders the active material occupation rate that exists, get rid of again and use slurry to bring high energy consumption to avoid drying sintering, destroy the active material performance, using the dryness active material is the road that can walk, but difficult point is dry powder and answers strong bonded on skeleton, do not see reliable scheme always.Development test through the inventor etc. successfully makes a breakthrough, and we find,,, do not make active material cohesiveness and absorption affinity balance as long as utilize Van der Waals force by binding agent and high temperature sintering, cooperate suitable mesh skeleton structure, can make dry powder active material strong bonded on skeleton.Through our research, under specific network structure skeleton, can use this its electric conductivity of copper and copper alloy to be better than the material of the conventional nickel that uses in addition, bring extra benefit.
The purpose of this invention is to provide the improved electrode of a kind of rechargeable battery.
Another object of the present invention provides a kind of manufacture method of described improvement electrode, and this method flow process is simple, the electrode quality height of making, and the battery performance homogeneity is good, and the life-span is long.
Further object of the present invention provides a kind of equipment that is used for described electrode manufacturing method, and it is simple in structure, efficient height, rate of finished products height.
The present invention has following technical scheme:
A kind of charging battery electrode dry type manufacture method, electrode comprises skeleton and active material layer, it is characterized in that this method is made up of following steps:
1. skeleton is cut to draw in the net to be with by copper, copper alloy or nickel matter and is constituted, described cutting drawn in the net with cutting out a plurality of otch for laterally embarking on journey at the sheet material of described corresponding material, do not cut out the centre of its position of part of otch between each otch of next line at the lastrow otch, with cutting out otch afterwards at the vertical tractive sheet material of sheet material, notch shape diamondwise, square or fan-shaped hole, the sheet material of incision periphery reverses with tractive, constitutes the edge in hole; Perhaps skeleton is the nickel of foaming or the band of nickel plating material;
2. with described guipure continuously by filling the case of active material dry mash, described dry mash is from rare earth hydrogen adsorbing alloy, Ni (OH)
2, CoO, CdO, Cd, MnO
2Middle select at least a;
3. send from above-mentioned powder box band outlet with the described guipure of described active material;
4. described guipure is pressurized immediately outside band outlet;
5. guipure is cut into fragment, and is rolled into electrode.
A kind of charging battery electrode, skeleton and active material layer are arranged, the nickel that it just very foams or the stephanoporate framework of nickel plating material, it is characterized in that its negative pole skeleton is that cutting of one of copper, copper alloy, nickel material drawn in the net, described cutting drawn in the net rhombus, one of square or fan-shaped hole, the holes pitch-row that staggers mutually half of adjacent two row, the edge in hole reverses with respect to network plane; With active material layer, described active material is rare earth hydrogen adsorbing alloy, Ni (OH) on the skeleton of described positive pole and negative pole
2, CoO, CdO, Cd, MnO
2Dry powder in select at least a, invest on the skeleton after pressurization forms active material layer.
A kind of charging battery electrode dry type manufacturing equipment is characterized in that establishing the active material powder box; At described powder box peripheral hardware frame net belt disc carrier, send described guipure by the powder in the described powder box to described powder box, described guipure is the porous belts that draws in the net or foam nickel or nickel plating of cutting of one of copper, copper alloy, nickel material; At the identical press-powder wheel of a pair of switched in opposite of powder box band outlet peripheral hardware, rotating speed, the guipure that adheres to active material that band outlet is sent is shaped by pressurized between the two press-powders wheel.
The basic inventive point of electrode of the present invention, manufacture method and equipment scheme is: 1. active material is attached on the skeleton it by means of binding agent, but manage considering outside active material cohesiveness and the absorption affinity balance, utilize Van der Waals force to reach the active material firm attachment in skeleton, be a kind of dry operation, thereby changed traditional slurry method fully.2. the negative pole skeleton uses to cut and draws in the net structure, particularly uses copper cutting to draw in the net skeleton, not only makes above-mentioned first inventive point give full play to its effect, and from the skeleton aspect for improving performance, reducing cost or the like and to make contributions.3. electrode of the present invention is the dry type manufacturing, gets rid of slurry technology, does not have sintering process, thus the disadvantage of avoiding all to bring by sintering.
Skeleton, particularly negative pole use copper skeleton than nickel matter skeleton low price, conductance height, ABUNDANT NATUREAL RESOURSES.Draw in the net structural framework and cut, especially diamond hole is cut and is drawn in the net, the porosity height, not yielding, cooperate the dry powder compacting to form active material layer and do not contain binding agent, can not cause the binding agent of inert matter to mask the result of a part of skeleton effective area, thereby have internal resistance little, reaction speed is fast, the fireballing advantage of Electolyte-absorptive.The perforated steel ribbon skeleton is compared with the present invention program, and its valency is expensive, and nickel plating is wanted on the surface, and the edge in hole is the coating weak spot, easily come off, thereby self discharge is big, and its porosity can not be above 80%, generally at 40-50%.
The foaming nickel skeleton cooperates the slurry method to form the way of active material layer and the present invention program relatively in the prior art, and advantage of the present invention is except that the own material of skeleton as above-mentioned, cuts that to draw in the net structure simple far lower than the nickel cost that foams because of manufacturing process.In addition, slurry method characteristics are to add water adding additives pulping, will wipe off, dry after inserting skeleton.Binding agent only is the usefulness of coating, is not active material, stays forever on the skeleton and will reduce useful effect, and internal resistance is increased, and reaction speed reduces.Wipe technology off and make the slurry bed thickness thin irregular, but have to scrape.Oven dry is the step that consumes energy greatly, except that increasing cost, will be the major reason of infringement hydrogen adsorbing alloy performance in Ni-MH battery.The present invention program need not to use binding agent, be coated with very even, control quantity of active material accurately easy, do not need baking step, therefore the possibility of harmless active material performance does not exist above shortcoming, battery performance is improved, and discreteness is little, and cost also descends.
For positive pole, though use foaming nickel to be not so good as copper, use dry type active material layer manufacturing process of the present invention equally as skeleton conductivity, have the advantage that all eliminating slurry methods and sintering process bring.
Take a broad view of it, dry method of the present invention is made electrode, powder inserts that skeleton technology is simple, and energy consumption is little, and cost is low, good conductivity, ABUNDANT NATUREAL RESOURSES, internal resistance is little, and reaction speed is fast, Electolyte-absorptive is fast, more valuable is to find that after deliberation the present invention program's active material is coated with very evenly, be every plate electrode weight, consistency of thickness is good, any a slice electrode active material layer weight difference can accomplish that the electrode capacity of making thus improves less than 0.075 gram, and evening ratio reaches a new level, the 1c flash-over characteristic platform of battery can rise appreciably and reach 50%, and manufacturing cost but significantly reduces.
Fig. 1 is the schematic diagram of electrode forming equipment main composition.
Fig. 2 is the variation scheme schematic diagram of Fig. 1 equipment.
Fig. 3 (a) is to cut to draw in the net structural representation (b).
Below in conjunction with accompanying drawing specific embodiment is described.
First embodiment is a kind of manufacturing example of negative pole of Ni-MH battery.
This routine electrode has skeleton, it is that a kind of copper cutting drawn in the net, the Copper Foil thick with 0.1mm cuts out a plurality of otch on its width, shown in Fig. 3 (a), each otch of adjacent next line and each otch of lastrow otch pitch that staggers half, its position of part that promptly is not cut open between each otch in certain delegation are in the place, otch middle that neighbouring row is cut open.Otch is pulled subsequently, form half periphery of diamond hole, square opening or scallop hole, be example with the diamond hole in this example, shown in Fig. 3 (b), along with tractive, the otch of lastrow constitutes last two edges of diamond hole, following two edges in the hithermost notch shape diamondwise of next line hole, and each edge is reversed into upright substantially when forming diamond hole.The big young pathbreaker of the width of otch and tractive determines the Diagonal Dimension of diamond hole, and the distance and the degree of reversing will determine the thickness of net and the width of edge between the adjacent lines otch, and these data depend on the designing requirement of electrode skeleton net.The length diagonal of diamond hole is desirable 2-4mm and 1-2mm respectively, is pulled at last between the hole behind the net that edge is wide to be 0.15-3mm, nets thick between 0.25-0.5mm, the diamond hole diagonal respectively gets 2.6 and 1.3mm in this example, the wide 0.2mm of edge nets thick 0.45mm, porosity 95%.Copper Foil can reach hundreds of rice, makes to cut and draws in the net to be with (conductive strips) can carry out the continuous production of electrode.Formation about square and scallop hole is similar to diamond hole, no longer describes.
Active material is rich lanthanum hydrogen adsorbing alloy, uses LaNi5, and 150-300 purpose powder does not dash with any binding agent such as CMC.Utilize such electrode forming equipment shown in Figure 1 to make electrode by following method.To twist in above-mentioned copper on the tep reel support (not shown) at normal temperatures cuts and draws in the net (conductive strips) 5 and enter in the powder in the powder box 2 by being located at guide rail 1 on the former, send from the band outlet 3 of powder box 2 lower ends then, below band outlet 3, establish a pair of press-powder wheel 4, by transmission mechanism (not shown) driven rotary, two press-powder wheels have same rotational speed, but switched in opposite, had the active material powder by the conductive strips that band outlet 3 is sent, be described LaNi5 powder in this example, enter that pressurized is configured as the electrode band material between described two press-powders wheel, this electrode band material is again through cutting into electrode slice.Described powder box 2 is funnel-form casees, and inner chamber is up big and down small up to band outlet 3, contains the active material powder in the case, and box cavity cross section size variation from top to bottom realizes with at least one step in this example.The gap that described a pair of press-powder wheel is 4 and the gap length of band outlet correspondingly can be adjusted, and its purpose is subjected to the authorized pressure compacting after being to make conductive strips with powder through press-powder wheel 4, and electrode band material thickness reaches requirement.The scheme of described gap adjustment can adopt one of following two kinds of schemes: rigid pressurized organization plan and elasticity pressure structure scheme.The formation of so-called rigid scheme is that the bearing pedestal position of at least one press-powder wheel can change, thereby change two and take turns a spacing, this spacing must less than band outlet 3 send with the thickness of powder conductive strips, allow conductive strips that band outlet sends by through test with calculate the gap of determining and obtain the moulding pressure that requires and the electrode band material thickness of shaping.So-called elastic scheme be with flexible member to plus-pressure between the press-powder wheel, the press-powder wheel separately reaches authorized pressure during predetermined distance.Make the negative plate of Ni-MH battery in this example, thickness is 0.31mm, is subjected to pressure pressure at 80-300 ton/cm
2More than the structure that changes about the powder box intracavity section and the two kinds of gaps description diagram not of adjusting the scheme concrete structures because these descriptions can be known understanding.Use press-powder wheel pressurization power drain little, control easily, therefore effective, the efficient height.
Second embodiment is the example that a kind of positive pole of Ni-MH battery is made.
This routine electrode skeleton is a loose structure, is made of foaming nickel, and active material is Ni (OH)
2And CoO, adopt and the first routine similar methods manufacturing, concrete steps following (referring to Fig. 2): the nickel conductive strips 5 bottom-up powder box 2 that enter will foam, conductive strips with powder are sent from the band outlet 3 of powder box 2 upper ends, this is a plate that specified gap is arranged can to increase a powder-scraper 8 than Fig. 1 before sending between the press-powder wheel 4, promptly increases to scrape off the operation of floating powder together before being pressed into shape.The structure of press-powder wheel 4 is identical with first example with effect, and output is electrode band material 6 at last, and cutting into electrode slice equally is needless to say.Added oscillating action when in the method that this example adopts, powder being packed into conductive strips, its sign is frequency and amplitude, correspondingly, installs vibrator 7 on powder box 2 outer walls in the electrode forming equipment, the structure of vibrator 7 need not to describe in detail, and its principle and formation are commonly seen.For the conductive strips of conductive strips (skeleton), particularly loose structure, the nickel that for example foams, vibration has adjection for the filling active material, and it is more abundant promptly to load powder.Can select its frequency f and amplitude T at different conductive strips and powder by test, determine high h of powder box (bed of material height) and conductive strips translational speed V, obtain the result of good product quality.The parameter of using in this example has: f=50-2000, T=0.1-1.0mm, h=50-300mm.
Be noted that: conductive strips enter powder box from the bottom in this example, but also nonessential like this, conductive strips enter from powder box top as first example, from bottom output, also are fine.
Its active materials of electrode that first and second examples are made on skeleton the amount of being loaded with consistency and the uniformity of distribution all belong to superior, testing result shows that above-mentioned two weight differential values (consistency and uniformity) are all in 0.075 gram, as everyone knows, whenever differing 0.1 gram active material can cause the capacity of 28.8mAh to differ, add reasons such as not containing binding agent in the active material, electrode of the present invention will have high power capacity (improving 10%), little internal resistance (reducing about 5%), the capacity discreteness is little, this requires a plurality of batteries to use in groups for current most of occasions is very easily favourable, in addition, the battery 1c discharge curve display characteristic of actual measurement improves, 1.2 the volt platform is increased to 35-40 minute from 25-30 minute of prior art, reaches 40% more than.
Electrode for above first example and the second example making, hydrogen electrode particularly, but equal accessory fibers chemical industry preface, this operation is to the present invention and nonessential, but it is useful, concrete way is electrode short time (0.1-1min) in 7% polytetrafluoroethylene emulsion of low concentration to soak into the back drying, handles through fibrillatable again, strengthens the slip-off preventing effect.
Claims (9)
1. charging battery electrode dry type manufacture method, electrode comprises skeleton and active material layer, it is characterized in that its this method is made up of following steps:
1. skeleton is cut to draw in the net to be with by copper, copper alloy or nickel matter and is constituted, described cutting drawn in the net with cutting out a plurality of otch for laterally embarking on journey at the sheet material of described corresponding material, do not cut out the centre of its position of part of otch between each otch of next line at the lastrow otch, with cutting out otch afterwards at the vertical tractive sheet material of sheet material, notch shape diamondwise, square or fan-shaped hole, the sheet material of incision periphery reverses with tractive, constitutes the edge in hole; Perhaps skeleton is the nickel of foaming or the band of nickel plating material;
2. with described guipure continuously by filling the case of active material dry mash, described dry mash is from rare earth hydrogen adsorbing alloy, Ni (OH)
2, CoO, CdO, Cd, MnO
2Middle select at least a;
3. send from above-mentioned powder box band outlet with the described guipure of described active material;
4. described guipure is pressurized immediately outside band outlet;
5. guipure is cut into fragment, and is rolled into electrode.
2. according to the manufacture method of claim 1, it is characterized in that described moulding pressure is 80-300 ton/square centimeter.
3. according to the manufacture method of claim 1 or 2, it is characterized in that the hydrogen electrode behind the described press molding soaked into 0.1-1 minute in the polytetrafluoroethylene emulsion of 7% concentration, handle through fibrillatable again after the drying.
4. according to the manufacture method of claim 1 or 2, it is characterized in that described foaming nickel skeleton uprightly by in the vibrating bin that dry mash is housed.
5. charging battery electrode, skeleton and active material layer are arranged, the nickel that it just very foams or the stephanoporate framework of nickel plating material, it is characterized in that its negative pole skeleton is that cutting of one of copper, copper alloy or nickel material drawn in the net, described cutting drawn in the net rhombus, one of square or fan-shaped hole, the holes pitch-row that staggers mutually half of adjacent two row, the edge in hole reverses with respect to network plane; With active material layer, described active material is rare earth hydrogen adsorbing alloy, Ni (OH) on the skeleton of described positive pole and negative pole
2, CoO, CdO, Cd, MnO
2Dry powder in select at least a, invest on the skeleton after pressurization forms active material layer.
6. a charging battery electrode dry type manufacturing equipment is characterized in that establishing the active material powder box; At described powder box peripheral hardware frame net belt disc carrier, send described guipure by the powder in the described powder box to described powder box, described guipure is the porous belts that draws in the net or foam nickel or nickel plating of cutting of one of copper, copper alloy, nickel material; At the identical press-powder wheel of a pair of switched in opposite of powder box band outlet peripheral hardware, rotating speed, the guipure that adheres to active material that band outlet is sent is shaped by pressurized between the two press-powders wheel.
7. according to the equipment of claim 6, the powder box that it is characterized in that described manufacturing hydrogen electrode is a casing up big and down small, that its intracavity section has a step at least.
8. according to the equipment of claim 6, it is characterized in that the powder box of described manufacturing nickel electrode is provided with vibrator, make in the powder box and under assigned frequency and amplitude, vibrate.
9. according to any described equipment among the claim 6-8, it is characterized in that the forward (FWD) mouth place of described powder box establishes the guide rail that the described conductive strips of guiding pass through; Establish powder-scraper between powder box and the press-powder wheel, described powder-scraper is gapped plate.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97122056A CN1085896C (en) | 1997-12-19 | 1997-12-19 | Electrode of charging battery and method and equipment for making electrode |
| AU16521/99A AU1652199A (en) | 1997-12-19 | 1998-12-21 | Metal-hydride hydrogen storage rechargeable batteries |
| PCT/AU1998/001057 WO1999033126A1 (en) | 1997-12-19 | 1998-12-21 | Metal-hydride hydrogen storage rechargeable batteries |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97122056A CN1085896C (en) | 1997-12-19 | 1997-12-19 | Electrode of charging battery and method and equipment for making electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1220498A true CN1220498A (en) | 1999-06-23 |
| CN1085896C CN1085896C (en) | 2002-05-29 |
Family
ID=5176649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97122056A Expired - Lifetime CN1085896C (en) | 1997-12-19 | 1997-12-19 | Electrode of charging battery and method and equipment for making electrode |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN1085896C (en) |
| AU (1) | AU1652199A (en) |
| WO (1) | WO1999033126A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100338797C (en) * | 2004-12-25 | 2007-09-19 | 苗维新 | Method for producing copper sheet grating of lead acid battery, and dedicated die |
| CN100347883C (en) * | 2006-01-20 | 2007-11-07 | 深圳市豪鹏科技有限公司 | Manufacturing method of negative electrode plate of Ni-H cell |
| CN100442576C (en) * | 2006-10-13 | 2008-12-10 | 深圳市豪鹏科技有限公司 | Cathode piece of hydrogen-nickel battery, and method for fabricating hydrogen-nickel battery by using the cathode pieces |
| CN102361072A (en) * | 2011-11-07 | 2012-02-22 | 益阳科力远电池有限责任公司 | Preparation method for anode pieces of nickel batteries |
| CN102903972A (en) * | 2012-10-23 | 2013-01-30 | 浙江凯恩电池有限公司 | High-power nickel-metal hydride battery and manufacturing method thereof |
| CN106654155A (en) * | 2016-12-30 | 2017-05-10 | 深圳市豪鹏科技有限公司 | Secondary battery electrode manufacturing method and battery cathode |
| CN108807820A (en) * | 2018-06-16 | 2018-11-13 | 深圳市凤凰锂能科技有限公司 | Chargeable metal hydride manganese cell |
| CN109802091A (en) * | 2018-12-29 | 2019-05-24 | 深圳市豪鹏科技有限公司 | A kind of preparation method of nickel electrode |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000022436A1 (en) | 1998-10-13 | 2000-04-20 | Biomicro Systems, Inc. | Fluid circuit components based upon passive fluid dynamics |
| US6387148B1 (en) * | 1999-07-30 | 2002-05-14 | Shin-Etsu Chemical Co., Ltd. | Hydrogen absorbing alloy compact for use as the negative electrode of an alkaline rechargeable battery |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4529672A (en) * | 1983-03-29 | 1985-07-16 | Union Carbide Corporation | Process of making electrochemical electrodes and electrodes made thereby |
| JPH0697614B2 (en) * | 1988-08-26 | 1994-11-30 | エヌ・イーケムキャット株式会社 | Supported platinum alloy electrocatalyst |
| DE3938524C2 (en) * | 1989-11-21 | 1997-05-07 | Friwo Silberkraft Ges Fuer Bat | Activatable primary element with alkaline electrolyte and a silver oxide electrode |
| US5382482A (en) * | 1992-08-07 | 1995-01-17 | Nippon Oil Company, Limited | Zinc electrode for alkaline storage battery |
| KR0172229B1 (en) * | 1996-05-31 | 1999-03-30 | 손욱 | Method of manufacturing hydrophobic plate |
-
1997
- 1997-12-19 CN CN97122056A patent/CN1085896C/en not_active Expired - Lifetime
-
1998
- 1998-12-21 AU AU16521/99A patent/AU1652199A/en not_active Abandoned
- 1998-12-21 WO PCT/AU1998/001057 patent/WO1999033126A1/en active Application Filing
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100338797C (en) * | 2004-12-25 | 2007-09-19 | 苗维新 | Method for producing copper sheet grating of lead acid battery, and dedicated die |
| CN100347883C (en) * | 2006-01-20 | 2007-11-07 | 深圳市豪鹏科技有限公司 | Manufacturing method of negative electrode plate of Ni-H cell |
| CN100442576C (en) * | 2006-10-13 | 2008-12-10 | 深圳市豪鹏科技有限公司 | Cathode piece of hydrogen-nickel battery, and method for fabricating hydrogen-nickel battery by using the cathode pieces |
| CN102361072A (en) * | 2011-11-07 | 2012-02-22 | 益阳科力远电池有限责任公司 | Preparation method for anode pieces of nickel batteries |
| CN102903972A (en) * | 2012-10-23 | 2013-01-30 | 浙江凯恩电池有限公司 | High-power nickel-metal hydride battery and manufacturing method thereof |
| CN102903972B (en) * | 2012-10-23 | 2015-09-02 | 浙江凯恩电池有限公司 | A kind of high-capacity nickel-hydrogen battery and preparation method thereof |
| CN106654155A (en) * | 2016-12-30 | 2017-05-10 | 深圳市豪鹏科技有限公司 | Secondary battery electrode manufacturing method and battery cathode |
| CN106654155B (en) * | 2016-12-30 | 2020-02-28 | 深圳市豪鹏科技有限公司 | Electrode manufacturing method of secondary battery and battery cathode |
| CN108807820A (en) * | 2018-06-16 | 2018-11-13 | 深圳市凤凰锂能科技有限公司 | Chargeable metal hydride manganese cell |
| CN108807820B (en) * | 2018-06-16 | 2021-05-04 | 深圳市凤凰锂能科技有限公司 | Rechargeable manganese metal hydride battery |
| CN109802091A (en) * | 2018-12-29 | 2019-05-24 | 深圳市豪鹏科技有限公司 | A kind of preparation method of nickel electrode |
Also Published As
| Publication number | Publication date |
|---|---|
| AU1652199A (en) | 1999-07-12 |
| CN1085896C (en) | 2002-05-29 |
| WO1999033126A1 (en) | 1999-07-01 |
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