EP2115800A2 - Electrode pour batteries au plomb - Google Patents

Electrode pour batteries au plomb

Info

Publication number
EP2115800A2
EP2115800A2 EP08708520A EP08708520A EP2115800A2 EP 2115800 A2 EP2115800 A2 EP 2115800A2 EP 08708520 A EP08708520 A EP 08708520A EP 08708520 A EP08708520 A EP 08708520A EP 2115800 A2 EP2115800 A2 EP 2115800A2
Authority
EP
European Patent Office
Prior art keywords
lead
electrode according
wires
core
wire
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08708520A
Other languages
German (de)
English (en)
Inventor
Joseph Cilia
George Schembri
Joseph Pule
Malcolm Tabone
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Abertax Research and Development Ltd
Original Assignee
Abertax Research and Development Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE102007014255A external-priority patent/DE102007014255A1/de
Priority claimed from DE200710031190 external-priority patent/DE102007031190A1/de
Application filed by Abertax Research and Development Ltd filed Critical Abertax Research and Development Ltd
Publication of EP2115800A2 publication Critical patent/EP2115800A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/002—Extruding materials of special alloys so far as the composition of the alloy requires or permits special extruding methods of sequences
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/54—Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges
    • H01M50/541—Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges 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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/06—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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/647—Prismatic or flat cells, e.g. pouch cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/654—Means for temperature control structurally associated with the cells located inside the innermost case of the cells, e.g. mandrels, electrodes or electrolytes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • 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
    • H01M4/16—Processes of manufacture
    • H01M4/22—Forming of electrodes
    • 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
    • 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
    • H01M4/68—Selection of materials for use in lead-acid accumulators
    • H01M4/685—Lead alloys
    • 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
    • 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 forming a plate in a lead acid battery.
  • electrodes for batteries made up of lead or lead alloy are formed as plates which are manufactured by casting or injection-casting of lead.
  • this conventional process presents a large number of disadvantages including environmental problems, health problems and cost issues.
  • the casting process also necessitates the addition of certain elements like antimony, together with other trace elements which are needed to improve the cast ability of grids.
  • the addition of these elements reduces the electrical conductivity of the plates, thus reducing the electrical properties of the battery cells.
  • the injection casting (or die casting) process presents further disadvantages in its limit to the maximum length of cast plates. This limits the length of the finished battery cells. Filling longer moulds with this method presents bigger process problems.
  • Another disadvantage is that the existing process does not allow the flexibility of varying the conductivity of the electrodes to a required value due to the casting limitations.
  • the electrically positive electrode (anode) in a modern flooded and valve-regulated lead acid battery is made of lead dioxide as electro-chemically active matter and has a core of lead or lead alloy. Batteries require a maximised surface of active matter to enhance the electrochemical reaction and a good electric conductivity to allow high amperage charging and discharging.
  • a good capacity is achieved, for instance, by a high amount of active material placed in a textile tube and a solid lead or lead alloy core in the centre to achieve good conductivity.
  • the relatively poor conductivity of lead makes it unavoidable to use a rather massive lead core which is heavy, voluminous and expensive.
  • an electrode which is made up of at least one wire containing lead or lead alloy.
  • the electrode may be made up of a series of such wires which may be placed in a parallel or a grid arrangement.
  • the wire or wires forming the plate of an anode or cathode in a battery may be prefabricated in any mechanical, chemical or electrochemical means excluding the conventional casting process.
  • the wire or wires may be extruded or cold-formed.
  • Such a process can be a continuous process allowing the production of lead or lead alloy wires in any desired length having not necessarily a round cross-section.
  • the cross-section may be polygonal or star- shaped which increases the outer surface resulting in a better and quicker charging process of the battery.
  • each wire may contain a core, e. g. an inner tube or a core of highly conductive material like copper or silver. If a lower conductivity is sufficient, said core may be made up of a non-conductive or semi-conductive material like plastic or silicone steel which has the advantage to reduce the battery weight.
  • the lead or lead alloy wire may also be produced by a cold drawing process giving the micro structure of the lead a better corrosion resistance and higher conductivity, due to the lower percentage of certain chemicals like antimony that can be used when prefabricating the wire. In that case the wire with improved conductivity may not need an inner core.
  • Figure 1 is a schematic section of an electrode according to the invention
  • figure 2 is a modification of figure 1
  • figure 3 is a further modification
  • figure 4 shows a further embodiment
  • figure 5 shows the schematics of a battery cell
  • figure 6 shows an anode according to another embodiment of the invention
  • figure 7 shows a modified anode
  • figure 8 is a further embodiment of the invention
  • figure 9 illustrates an advantageous structure of an electrode
  • figure 10 is a modified embodiment of figure 9.
  • Figure 1 shows an electrode 10 of a battery which is made up of a series of wires 12 placed in a parallel arrangement 14 in a support structure 16.
  • the support structure 16 is made up of an upper bar 18 and a lower bar 20.
  • the wires 12 may be extruded or cold- formed wires 12 of lead or lead alloy. They may have any cross-sectional shape and size and not necessarily a round cross-section. Thanks to the selected process for manufacturing said wires 12, there is no limit either in length or in composition which could be any lead alloy.
  • the wires 12 may be prefabricated by any mechanical, chemical, physical or electric chemical process, excluding casting.
  • the wires 12 can go right up in upper bar 18 to form part of it.
  • Said bar 18 may be of lead or lead alloy or of any other material whether electrically conducting or not.
  • the lead or lead alloy wires 12 may be embedded in the upper bar 18 by an insert molding injection process or any other process that would give the same end result.
  • the wires 12 in the parallel arrangement 14 are covered by a textile gauntlet 22.
  • the lead or lead alloy wires 12 may be provided with integral outer wings 24 for positioning the wires in the centre of said gauntlet 22.
  • the extrusion manufacturing process of the lead or lead alloy wires 12 enable said side wings 24 to be an integral part of the wires 12, possibly throughout the whole length of the wires 12, or only at points where required along the wires. These could also be trimmed to provide the wings 24 at specific interval positions.
  • the lead or lead alloy wires 12 may have an inner core 26.
  • Said core 26 may be made up of a variable conductive material.
  • a core 26 made up of a hollow tube 28 in which a cooling medium, possibly water, could be made to flow through the tubes 28 to assist in cooling of the electrode 10.
  • the cooling circuit may be completed by a channel 30 provided in the lower bar 20 and connecting the lower ends of said tubes 28.
  • the arrows 32 above a terminal 34 on top of the upper bar 18 are symbolics for the inlet and outlet of the cooling fluid.
  • the upper ends of the wires 12 embedded in the upper bar 18 are bunched together to form a bundle 36 which is connected to said terminal 34 on the top of the upper bar 18.
  • Such bundle 36 improves the rigidity of the wire electrode 10, particularly in the case of very thin wires 12.
  • the lead wires 12 have their ends with the inner cores 26' exposed.
  • These inner cores 26' are grouped together or left near each other and covered or coated with a conductive material such as lead or possibly any other conductive material to act as said terminal 34 for the whole assembly.
  • Figure 2 shows a modified electrode 10 of a battery which is also made up of a series of wires 12 placed in a parallel arrangement 14 and bunched together by any mechanical, chemical, physical or electric chemical process to form a top bundle 36, however without an upper bar.
  • the lower bar 20 of the support structure 16 is used at the lower end to ensure a consistent spacing of the wires 12 after the textile gauntlet 22 is inserted and filled up with an active mass 46 which will be described in detail in the embodiments of figures 5 to 8.
  • the upper bar 18 whether made of a conductive material such as lead or not, is provided with an inner conductor 38 embedded in the upper bar 18 to improve the electrical properties and conductivity.
  • the inner conductor 38 connecting the upper ends of the lead or lead alloy wires 12 has an upper protrusion 40 which is connected to the terminal 34 on top of the upper bar 18.
  • the upper bar 18 could be made in lead, lead alloy or any other material by a forging process or any other mechanical, chemical or electrochemical means.
  • the lead or lead alloy wires 12, whether with or without an internal core 26 could also be prefabricated and then connected and fixed to the upper bar 18 by glueing, welding, soldering or any other chemical, mechanical or electrochemical process.
  • FIG. 5 illustrates a battery cell 42 which is filled with an electrolyte 44 like H 2 SO 4 and contains two electrodes - the cathode 10c and the anode 10a - which may have the form of plates, grids, rods or tubes.
  • the anode electro-chemically active material 46 is lead dioxide PbO 2 .
  • the anode 10a made of lead dioxide has a core 26 made of highly conductive material or a mixture of highly conductive components, preferably metals.
  • metals used here can be copper or silver.
  • the inner core 26 is covered by a coating 48 of lead or a lead alloy. In this way the core 26 is in contact with lead or lead alloy only and not with the electrolyte 44 thus excluding undesired reactions like corrosion.
  • a lead dioxide mass 46 is placed between the coating 50 of lead or lead alloy covering the core 26 and a textile shell or gauntlet 22 which permits direct contact between the electrolyte 44 and the electro-chemically active mass 46. Good electric contact between the lead dioxide mass 46 and the core 26, 48 results in good high current properties of the anode 10a.
  • centring elements 24 may be placed between the core 26, 48 and the gauntlet 22 to ensure the central position of the core 26, 48 in the mass 46.
  • Such centring elements 24 can be made of electro-chemically inactive matter, like for instance plastic or metal-covered plastic, or of lead or lead alloy.
  • Figure 7 shows an alternative for the core 26 made of a rod 26' of non-conductive material which is covered with a highly conductive material 26" and separated by the lead or lead alloy coating 48 from the electro-chemically active mass 46.
  • the surrounding electro-chemically active mass 46 may covered on the hollow inside by a coating 48 of lead or lead alloy and some highly conductive material 26".
  • Figure 9 shows schematically an electrode structure which is made up of a series of wires 12 placed in a parallel arrangement 14 in a support structure 16.
  • the support structure 16 is made up of an upper bar or crosshead 18 and a lower bar or crosshead 20.
  • the wires 12 are electrically connected by soldering points 52 at least to the upper crosshead 18, which is provided with a vertical extension serving as battery terminal 34.
  • the wires 12, the battery terminal 34 and the upper crosshead 18 are made up of a core 26 of the above mentioned highly conductive non-lead material covered by said coating 48 of lead or lead alloy.
  • the lower crosshead 20 is of lead or lead alloy, but it may be as well of non-conductive material.
  • the wire 12 as in figure 9 made up of a core 26 with a coating 48 plus the outer electro-chemically active mass 46, is arranged in meanders in said support structure 16.
  • An important advantage of the invention shown in figure 5 to 8 is that the inner core 26 with its coating 48 of lead or lead alloy makes it possible to reduce the volume and weight of the battery; the production cost for the battery will also be lowered; in the absence of any lead melting the production is more environment friendly.
  • a battery using the technology of the invention will have a better capacity/volume and weight ratio and greatly improved high current properties for its charging and discharging.
  • the invention covers also an electric lead acid battery cell in which other metal parts than the anode are made in application of the core technology set out in the above description and in the claims.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Cell Electrode Carriers And Collectors (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Secondary Cells (AREA)

Abstract

La présente invention concerne une électrode (10) dans une batterie au plomb comprenant au moins un fil (12) contenant du plomb ou un alliage de plomb et préfabriqué par tout processus mécanique, physique, chimique ou électrochimique, à savoir l'extrusion ou le formage à froid. La conductivité du fil (12) peut être modifiée par un noyau interne (26), composé de tout matériau conducteur, non conducteur ou semi-conducteur.
EP08708520A 2007-01-31 2008-01-31 Electrode pour batteries au plomb Withdrawn EP2115800A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102007004776 2007-01-31
DE102007014255A DE102007014255A1 (de) 2007-01-31 2007-03-24 Hochleitfähige Elektroden für Blei-Säure-Batterien
DE200710031190 DE102007031190A1 (de) 2007-07-04 2007-07-04 Elektrode für Blei-Säure-Batterien
PCT/EP2008/051209 WO2008092925A2 (fr) 2007-01-31 2008-01-31 Electrode pour batteries au plomb

Publications (1)

Publication Number Publication Date
EP2115800A2 true EP2115800A2 (fr) 2009-11-11

Family

ID=39301006

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08708520A Withdrawn EP2115800A2 (fr) 2007-01-31 2008-01-31 Electrode pour batteries au plomb

Country Status (2)

Country Link
EP (1) EP2115800A2 (fr)
WO (1) WO2008092925A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170005338A1 (en) * 2015-07-01 2017-01-05 Giga Amps UK Limited Electrical storage batteries
CN109103459A (zh) * 2018-08-27 2018-12-28 广州倬粤动力新能源有限公司 复合网式板栅结构

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4658623A (en) * 1984-08-22 1987-04-21 Blanyer Richard J Method and apparatus for coating a core material with metal

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008092925A2 *

Also Published As

Publication number Publication date
WO2008092925A2 (fr) 2008-08-07
WO2008092925A3 (fr) 2008-09-18

Similar Documents

Publication Publication Date Title
DE102012018344B3 (de) Batteriemodul und Verfahren zu dessen Herstellung
EP0887873A2 (fr) Méthode de fabrication des connecteurs terminaux d'une batterie par procédé de moulage de barres de connection (COS)
CN109524673A (zh) 板栅及其制造方法、极板和铅酸蓄电池
CN102626776A (zh) 一种铝基铅及铅合金复合阳极制备方法
HK1246004A1 (zh) 电极、电池、电极生产方法和电池生产方法
JP2018528571A (ja) 蓄電池
CN101994127A (zh) 一种铜-铅层状复合电极及其制备方法
WO2008092925A2 (fr) Electrode pour batteries au plomb
CN111101153B (zh) 一种铜电积用复合阳极板及其制备方法
FI78931B (fi) Elektrod, speciellt en anod av utbelagd ventilmetall foer elektrolytisk utvinning av metaller och metalloxider.
JP5909815B1 (ja) クラッド式鉛蓄電池、クラッド式正極板、及びクラッド式正極板用集電体
AU762884B2 (en) Method for manufacturing of a cathode suspension bar
CN203179977U (zh) 铅蓄电池
CN209133605U (zh) 板栅、极板和铅酸蓄电池
WO2014068410A1 (fr) Anode pour utilisation dans la récupération de métaux par électrolyse
CN212560439U (zh) 一种外设保护罩的强电流辅助阳极结构
DE2347957C3 (de) Stromableiter für Röhrchenelektroden für elektrische Akkumulatoren
CN211088384U (zh) 一种免焊接蓄电池汇流排结构
CN102627002A (zh) 一种铝基铅及铅合金复合材料制备方法
CN207918972U (zh) 新型u形电解锰阳极板
FI78930B (fi) Elektrod, speciellt en anod av ytbelagd ventilmetall foer elektrolytisk utvinning av metaller och metalloxider.
CN205669070U (zh) 电解锌阴极导电梁
CN105862076B (zh) 电解锌阴极导电梁及其制备方法
CN223837589U (zh) 铝电解阳极钢爪插铜结构
CN216404556U (zh) 一种高精铜提炼装置

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20090812

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20130426

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20160802