WO2000005016A1 - Die-forming magazine cassette, method for manufacturing battery lead grids using said magazine cassettes, and equipment accomplishing said method - Google Patents
Die-forming magazine cassette, method for manufacturing battery lead grids using said magazine cassettes, and equipment accomplishing said method Download PDFInfo
- Publication number
- WO2000005016A1 WO2000005016A1 PCT/HU1998/000070 HU9800070W WO0005016A1 WO 2000005016 A1 WO2000005016 A1 WO 2000005016A1 HU 9800070 W HU9800070 W HU 9800070W WO 0005016 A1 WO0005016 A1 WO 0005016A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- die
- magazine
- cassettes
- forming
- equipment
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D25/00—Special casting characterised by the nature of the product
- B22D25/02—Special casting characterised by the nature of the product by its peculiarity of shape; of works of art
- B22D25/04—Casting metal electric battery plates or the like
-
- 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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/82—Multi-step processes for manufacturing carriers for lead-acid accumulators
- H01M4/84—Multi-step processes for manufacturing carriers for lead-acid accumulators involving casting
-
- 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 invention relates to a die-forming magazine cassette by means of which lead grids of storage batteries can be produced. Further the invention relates to a method for manufacturing said lead grids by using die-forming magazine cassettes complying with the invention, as well as an equipment for accomplishing said manufacturing method.
- Grids produced by the latter technology provide though very good quality products, but their properties are disputable, since the plaster retaining capability of grids-expanded this way is less satisfactory and, at the same time, the production cost of grids resulting from the complicated manufacturing technology is extremely high. As a result of these two deficiencies the method has failed to find wider application.
- the grid structure of batteries is shaped in cassettes arranged into stacks of thin laminated bundles.
- the cassettes are accommodated on a carrier table rotating along a central axis.
- the metal melt required to form the grid is forwarded gravitationally from the crucible arranged in the axis of rotation into the magazine cassette placed radial on the carrier table.
- the equipment described here can produce lead grids satisfying all demands, but that production technology cannot be operated in continuous mode or only in very uneconomically, because of the following reasons: • axial inflow of melt requires heating of the casting head to a very elevated temperature, because the rate of acceleration of the fed-in melt being slow until it reaches the inlet openings of magazine cassettes, the melt is compelled to perform a rotating movement until being discharged from the casting head, causing on the one hand considerable heat loss and on the other hand under the effect of turbulence, it unnecessarily absorbs air, impairing thereby the quality of the product, • temperature of the die-forming magazine cassettes must be kept above the eutectic point of the metal melt, since otherwise the melt at the inlet solidifies and cannot be cast,
- Heating of elements made of aluminium to the desired temperature can basically be made in two ways: a/ Through heat transfer by conduction. This way of heat transfer, however, is very slow, and fails to ensure uniform heat distribution within the stack, since the parts used in the method to facilitate detachment of the mould set as thermal insulation between the sheets.
- the method itself is extremely time and energy consumptive and requires interposition of some temperature equalizing means, b/ Heating may take place by radiating heat in a heating tunnel or furnace, but the heating-up of sheet layers is very difficult even in this way because a considerable proportion of heat rays are reflected by the aluminium surface.
- c/ Heating may be take place in die-forming magazine cassettes overheated in a forced way where the melt is heated as governed by hydraulic laws. Slightest leaks of magazine cassettes will cause the melt to escape under the effect of centrifugal force.
- a further drawback of overheated magazine cassettes is their very low recooling rate, since the cassettes cannot be handled before sufficient solidification of lead grids enclosed by the die-forming plates has taken place.
- the heating-up process of aluminium cassettes is extremely time consuming.
- they In order to keep the heated-up cassettes at equal temperature, they have to be heated to a temperature considerably exceeding the level required by the employed technology; and they have to be adjusted to a final temperature level in a properly controlled recooling system.
- the problem can not be solved by heating up with the die-forming plates taken apart either. This ensures though a faster heat transfer, but the die-forming plates cannot be assembled in their distorted state.
- the aim of proposing a die-forming magazine cassette has been set that it can be heated more easily than those used so far.
- the new magazine cassettes will be properly shape-retaining, that can be applied also in combination with centrifugal casting equipment and, in addition, savings in material consumption can also be attained.
- the proposal offered by the invention has been arrived at on the basis of the recognition that the magazine cassettes are made up of two different metals forming a laminated metal plate, where the material of its lateral sides is aluminium, just as in known designs, but the core of the plate consists of a ferromagnetic, magnetizable material.
- the importance of using a ferromagnetic material lies with the heating of the magazine cassette, permitting the cassette to be heated by way of induction.
- the invention is thus a die-forming magazine cassette for producing grids of lead-acid storage batteries.
- said cassette comprising die-forming plates consisting of two aluminium sheets arranged on the two sides of a ferromagnetic plate provided with through-going openings filled up with the material of said aluminium sheets when pressed onto said ferromagnetic plate.
- the outer surface of said aluminium sheets being provided with grooves corresponds to the web of the lead grid, so that said grooves arranged on the two sides of the die- forming sheets are displaced with respect to-each other and turned face-to-face constituting a magazine cassette, where the grooves are filled up with the material of the battery grid.
- grooves are made arched-shape and the material of the ferromagnetic plate being A38.11 grade steel, and the material of the aluminium sheets being Al 90.99.
- Further subject of the invention is equipment for producing the grid structure of lead batteries by means of equipment operating on the centrifugal principle.
- the essence of the apparatus lies in that the equipment being designed to operate in continuous mode and to comprise a rotary -receiving table ith four working positions, in which the magazine cassettes are located in a rotary rim wheel, the table being built up of a receiving station, a casting station, a braking station and a station performing the exchange of magazine cassettes, and the ready cassettes are expediently led through a cooling equipment to the a mechanism emptying the cassettes and discharging the final products, where the outlet end of said mechanism is connected to an equipment assembling the cassettes and preparing them for casting, to which an induction-type heating device is attached, the outlet of which being provided with an element forwarding the preheated magazine cassettes to the rotary-receiving table.
- Further subject of the invention is a method where the grids of lead-acid batteries are produced by using a magazine cassette, and further, a equipment for accomplishing
- Figure 1 shows the front view of the die-forming plate of the die-forming magazine cassette of the invention
- Figure 2 shows a sectional view taken along line A-A of Figure 1
- Figure 3 shows the simplified drawing of the equipment using die-forming magazine cassettes built-up of the die-forming plates of the invention.
- FIG. 1 the front view of the laminated die-forming plate 100 complying with the invention is shown, two such plates being placed opposed to each other to constitute a die-forming magazine cassette.
- Figure 2 the section along line
- A-A of Figure 1 is shown, where the arrangement of layers of the die-forming plate 100 can be clearly observed.
- the laminated die-forming plate 100 incorporates two aluminium sheets 101 and 102, with an expediently selected ferromagnetic plate 105 placed between them, constituting the core of the lamination.
- the composite, laminated arrangement of plates is built up so that a ferromagnetic plate 105 provided with suitable through- openings 106 , e.g. with expediently bored holes, is taken, the material of which can be steel, in the embodiment shown as example an A 3811 grade steel.
- the two aluminium sheets 101 and 102 are applied by rolling, the material of said two aluminium sheets
- the material of the aluminium sheets 101 and 102 simply fill out the openings
- grooves 103 and 104 are provided corresponding to the web of lead grids.
- Two die-forming plates 100 located opposite to each other commonly constitute a single magazine cassette, i.e. a single casting pair, where the grooves 103 and 104 are those, which are filled up with the material that will form the battery grid.
- the die-forming plates 100 shaped in this way can well be used for manufacturing lead grids in the course of centrifugal casting.
- the grooves103 and 104 i.e. the pattern corresponding to the lead grids may be obtained e.g. by rolling. So occurrence of undercuts and machining distortions can be avoided, so that these will not obstruct the lifting-out of grids shaped up between the die-forming plates 100 either.
- the aluminium plates 101 and 102 of the die-forming plate 100 are made of high-grade aluminium, e.g. Al 99.9, that can be anodized and/or provided with a PTFE coating.
- the die-forming plate 100 is designed to have a laminated structure, i.e. there is a ferromagnetic plate 105 interposed between the two outer aluminium sheets
- the die-forming plates 100 can optimally be heated up. This uniform heating-up can be made in an induction furnace of expediently selected frequency at an almost any selected energy density.
- Advantage of the die- forming plates 100 is that the heating-up process can be regulated and kept under at will by means of the ferromagnetic plate 105, independently of the heat-conduction properties of the aluminium sheets 101 and 102 built into the die-forming magazine cassette. Beyond all, the mechanical strength of the aluminium sheets 101 and 102 is increased by properly chosen perforated ferromagnetic plate 105.
- Casting equipment employing die-forming magazine cassettes of the invention is illustrated in some detail in Figure 3.
- a separately rotatable four- or six-position rotary rim wheel 1 provided with die-forming plates 100 and axially displaced inlet openings is mounted into a four- or six-position rotating-receiving table 107, having thus four work positions marked by numbers I, II, III, IV. by Figure 2.
- the rotating-receiving table 107 is rotated in the case of the example shown by a rubber-wheel friction drive, but the drive may be a single-purpose rim-drive and/or a rachet-pawl work cylinder. Within given and pre-selected cycle the four-position rotating-receiving table 107 is angularly displaced counter-clockwise by 90° when passing from one phase to the next one. In each working position, the following operations are performed.
- the mouthpiece 109 of the lead dosing station 108 is turned over the centre of rotation of the casting ring of rotary run wheel 1 rotating with the required rpm., so as to ensure axially displaced admission of molten lead into the cassette.
- Lead is fed by suitable feed pump not shown in the figure.
- the required amount of molten lead determined in the function of the quantity of the products is poured into the magazine cassette composed of the die-forming plates 100 shown in Figure 1 in 15 to 20 seconds.
- the mouthpiece 109 of feed pump automatically returns into its basic position.
- the magazine cassettes are carried a sloping roller path to a dismantling position 9, then from here toward an emptying mechanism 10, where the cassettes are emptied, and the final products, i.e. the lead grids of the battery are taken off and dispatched.
- the next working positions an assembling station 11 , where the cassettes are assembled, prepared for casting, and where their clamping is performed.
- the magazine cassettes prepared for casting are led through a induction-type pre-heater 12, then through a induction-type equalizing heating element 13 and, finally, said cassettes appear at the outlet end of said element.
- the magazine cassette designed in compliance with the invention and consisting of die-forming plates 100 shown in Figure 1 , is heated up to the required temperature level in a uniform way ensuring throughout identical end temperature by employing a ferromagnetic plate 105 between two aluminium sheets 101 and 102 compressed by the latter, said ferromagnetic plate 105 being heated while passing through the induction furnace 12, and aluminium sheets 101 and 102 are also heated up to a temperature required for casting of the lead.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002338501A CA2338501A1 (en) | 1998-07-24 | 1998-07-24 | Die-forming magazine cassette, method for manufacturing battery lead grids using said magazine cassettes, and equipment accomplishing said method |
JP2000560995A JP2002521790A (en) | 1998-07-24 | 1998-07-24 | Mold-forming magazine cassette, method of manufacturing battery lead grid using the magazine cassette, and apparatus for performing the method |
EP98936577A EP1100641A1 (en) | 1998-07-24 | 1998-07-24 | Die-forming magazine cassette, method for manufacturing battery lead grids using said magazine cassettes, and equipment accomplishing said method |
AU85539/98A AU8553998A (en) | 1998-07-24 | 1998-07-24 | Die-forming magazine cassette, method for manufacturing battery lead grids using said magazine cassettes, and equipment accomplishing said method |
PCT/HU1998/000070 WO2000005016A1 (en) | 1998-07-24 | 1998-07-24 | Die-forming magazine cassette, method for manufacturing battery lead grids using said magazine cassettes, and equipment accomplishing said method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/HU1998/000070 WO2000005016A1 (en) | 1998-07-24 | 1998-07-24 | Die-forming magazine cassette, method for manufacturing battery lead grids using said magazine cassettes, and equipment accomplishing said method |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000005016A1 true WO2000005016A1 (en) | 2000-02-03 |
Family
ID=10990140
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/HU1998/000070 WO2000005016A1 (en) | 1998-07-24 | 1998-07-24 | Die-forming magazine cassette, method for manufacturing battery lead grids using said magazine cassettes, and equipment accomplishing said method |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1100641A1 (en) |
JP (1) | JP2002521790A (en) |
AU (1) | AU8553998A (en) |
CA (1) | CA2338501A1 (en) |
WO (1) | WO2000005016A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2367514A (en) * | 2000-10-05 | 2002-04-10 | Alstom Power Nv | Encapsulating cassette mould |
CN102931415A (en) * | 2012-10-29 | 2013-02-13 | 天能电池集团有限公司 | Lead-acid battery composite plate grid, pole plate and battery |
WO2014071672A1 (en) * | 2012-11-06 | 2014-05-15 | Li Shangquan | Drum-type full-automatic die casting machine using enclosed feeding and vacuum melting |
CN106571470A (en) * | 2016-11-09 | 2017-04-19 | 成都聚立汇信科技有限公司 | Battery grid protection installation structure |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1990004267A1 (en) * | 1988-10-12 | 1990-04-19 | Toth Laszlo | Single-purpose machine for processing lead armatures for manufacturing accumulators |
-
1998
- 1998-07-24 CA CA002338501A patent/CA2338501A1/en not_active Abandoned
- 1998-07-24 EP EP98936577A patent/EP1100641A1/en not_active Withdrawn
- 1998-07-24 WO PCT/HU1998/000070 patent/WO2000005016A1/en not_active Application Discontinuation
- 1998-07-24 AU AU85539/98A patent/AU8553998A/en not_active Abandoned
- 1998-07-24 JP JP2000560995A patent/JP2002521790A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1990004267A1 (en) * | 1988-10-12 | 1990-04-19 | Toth Laszlo | Single-purpose machine for processing lead armatures for manufacturing accumulators |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2367514A (en) * | 2000-10-05 | 2002-04-10 | Alstom Power Nv | Encapsulating cassette mould |
GB2367514B (en) * | 2000-10-05 | 2004-04-14 | Alstom Power Nv | A mould |
CN102931415A (en) * | 2012-10-29 | 2013-02-13 | 天能电池集团有限公司 | Lead-acid battery composite plate grid, pole plate and battery |
WO2014071672A1 (en) * | 2012-11-06 | 2014-05-15 | Li Shangquan | Drum-type full-automatic die casting machine using enclosed feeding and vacuum melting |
CN106571470A (en) * | 2016-11-09 | 2017-04-19 | 成都聚立汇信科技有限公司 | Battery grid protection installation structure |
Also Published As
Publication number | Publication date |
---|---|
EP1100641A1 (en) | 2001-05-23 |
AU8553998A (en) | 2000-02-14 |
JP2002521790A (en) | 2002-07-16 |
CA2338501A1 (en) | 2000-02-03 |
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