[go: up one dir, main page]

US2794707A - Lead acid accumulators - Google Patents

Lead acid accumulators Download PDF

Info

Publication number
US2794707A
US2794707A US393017A US39301753A US2794707A US 2794707 A US2794707 A US 2794707A US 393017 A US393017 A US 393017A US 39301753 A US39301753 A US 39301753A US 2794707 A US2794707 A US 2794707A
Authority
US
United States
Prior art keywords
lead
calcium
lead acid
range
tin
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.)
Expired - Lifetime
Application number
US393017A
Inventor
Walsh Stanley
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.)
Chloride Electrical Storage Co Ltd
Original Assignee
Chloride Electrical Storage Co 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
Application filed by Chloride Electrical Storage Co Ltd filed Critical Chloride Electrical Storage Co Ltd
Priority to US393017A priority Critical patent/US2794707A/en
Priority claimed from GB22137/55A external-priority patent/GB772798A/en
Application granted granted Critical
Publication of US2794707A publication Critical patent/US2794707A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C11/00—Alloys based on lead
    • C22C11/02—Alloys based on lead with an alkali or an alkaline earth metal as the next major constituent
    • 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

  • This invention relates to lead acid accumulators and is particularly concerned with the alloys from which the grids of the accumulators are made.
  • Various alloys have been proposed to take the place of the usual antimonial lead alloy with a view to obviating the known disadvantages of the latter.
  • Lead-calcium and lead-tin-calcium alloys have been proposed. It is known however that in die-casting accumulator grids of open mesh type containing calcium and tin, there is a tendency for these alloys to form an oxide dross on the metal pot. This ditficulty manifests itself also in the segregation of oxide inclusions in the metal of the grid during casting which naturally reduces the resistance of the metal to anodic corrosion when used for positive plate grids.
  • a lead alloy containing calcium in the range 0.03 to 0.1%, tin in the range 1% to 2%, aluminium in the range 0.01 to 0.1%, balance lead has outstanding advantages for use in the making of die cast accumulator grids of open mesh type in that it is free from the electro-chemical disadvantages associated with grids containing antimony,
  • aluminium in the amounts indicated has no significant eifect on the mechanical properties and resistance to anodic corrosion of grids made from our improved alloy.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cell Electrode Carriers And Collectors (AREA)

Description

United States Patent Ofilice 2,794,707 Patented June 4, 1957 LEAD ACID ACCUMULATDRS No Drawing. Application November 13, 1953, Serial No. 393,017
2 Claims. (Ci. 75-167) This invention relates to lead acid accumulators and is particularly concerned with the alloys from which the grids of the accumulators are made. Various alloys have been proposed to take the place of the usual antimonial lead alloy with a view to obviating the known disadvantages of the latter. Lead-calcium and lead-tin-calcium alloys have been proposed. It is known however that in die-casting accumulator grids of open mesh type containing calcium and tin, there is a tendency for these alloys to form an oxide dross on the metal pot. This ditficulty manifests itself also in the segregation of oxide inclusions in the metal of the grid during casting which naturally reduces the resistance of the metal to anodic corrosion when used for positive plate grids.
By research and experiment I have found and this forms the basis of the present invention, that a lead alloy containing calcium in the range 0.03 to 0.1%, tin in the range 1% to 2%, aluminium in the range 0.01 to 0.1%, balance lead has outstanding advantages for use in the making of die cast accumulator grids of open mesh type in that it is free from the electro-chemical disadvantages associated with grids containing antimony,
and has equally good mechanical and age hardening properties. It also has less tendency to dross formation and loss of calcium and tin than lead-tin-calcium alloys to which aluminium has not been added.
If calcium is in excess of 0.1%, precipitation of a lead calcium compound is liable to occur. Lesser amounts of calcium than 0.1% inhibit this precipitation. The presence of this precipitated anodic corrosion and disintegration in the grids of lead acid electric accumulators.
The addition of aluminium in the amounts indicated has no significant eifect on the mechanical properties and resistance to anodic corrosion of grids made from our improved alloy.
An example of the improved alloy is given hereunder:
Percent Calcium 0.08 Tin 1.5 Aluminium 0.05 Lead 98.37
References Cited in the file of this patent UNITED STATES PATENTS Shoemaker 1,813,324 July 7, 1931

Claims (1)

1. A DIE CAST GRID OF A LEAD ACID ELECTRIC ACCUMULATOR CONTAINING CALCIUM IN THE RANGE TO INHIBIT PRECIPITATION OF LEAD CALCIUM COMPOUNDS, FROM 0.03 TO NOT IN EXCESS OF 0.1%, TIN IN THE RANGE 1% TO 2%, ALUMINIUM IN THE RANGE 0.01 TO 0.1%, BALANCE LEAD.
US393017A 1953-11-18 1953-11-18 Lead acid accumulators Expired - Lifetime US2794707A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US393017A US2794707A (en) 1953-11-18 1953-11-18 Lead acid accumulators

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US393017A US2794707A (en) 1953-11-18 1953-11-18 Lead acid accumulators
GB22137/55A GB772798A (en) 1955-08-02 1955-08-02 Improvements in or relating to taximeters

Publications (1)

Publication Number Publication Date
US2794707A true US2794707A (en) 1957-06-04

Family

ID=26255757

Family Applications (1)

Application Number Title Priority Date Filing Date
US393017A Expired - Lifetime US2794707A (en) 1953-11-18 1953-11-18 Lead acid accumulators

Country Status (1)

Country Link
US (1) US2794707A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2860969A (en) * 1956-04-26 1958-11-18 Chloride Electrical Storage Co Lead-acid accumulator alloy
US3920473A (en) * 1971-12-15 1975-11-18 Lucas Batteries Ltd Battery plate grids for lead-acid batteries
FR2341660A1 (en) * 1976-02-18 1977-09-16 Globe Union Inc ALLOY FOR LEAD ACID STORAGE BATTERIES
US4125690A (en) * 1976-03-05 1978-11-14 Chloride Group Limited Battery electrode structure
US4233070A (en) * 1978-05-26 1980-11-11 Chloride Group Limited Lead alloys for electric storage battery

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1813324A (en) * 1928-11-28 1931-07-07 S & T Metal Company Lead alloy

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1813324A (en) * 1928-11-28 1931-07-07 S & T Metal Company Lead alloy

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2860969A (en) * 1956-04-26 1958-11-18 Chloride Electrical Storage Co Lead-acid accumulator alloy
US3920473A (en) * 1971-12-15 1975-11-18 Lucas Batteries Ltd Battery plate grids for lead-acid batteries
FR2341660A1 (en) * 1976-02-18 1977-09-16 Globe Union Inc ALLOY FOR LEAD ACID STORAGE BATTERIES
US4125690A (en) * 1976-03-05 1978-11-14 Chloride Group Limited Battery electrode structure
US4233070A (en) * 1978-05-26 1980-11-11 Chloride Group Limited Lead alloys for electric storage battery

Similar Documents

Publication Publication Date Title
US4159908A (en) Alkali metal containing battery grid lead alloy
US2794707A (en) Lead acid accumulators
US2860969A (en) Lead-acid accumulator alloy
GB1289621A (en)
US3567436A (en) Compression resistant zinc base alloy
US2694628A (en) Grid metal alloy
US3881953A (en) Battery electrode grids and method of making same from a lead-calcium-lithium-tin alloy
US2170650A (en) Alloy
US3001924A (en) Sacrificial magnesium anodes
US2923671A (en) Copper electrodeposition process and anode for use in same
US4170470A (en) High strength lead alloy
US4310353A (en) Low-antimony lead alloy
JP3113895B2 (en) Lead alloy for storage battery
US2620367A (en) Lead-acid accumulator
JP4502346B2 (en) Lead-based alloys for lead-acid batteries
US2305825A (en) Magnesium alloy
JP4430227B2 (en) Lead-based alloys for lead-acid batteries
US2464918A (en) Magnesium base alloys
ES457532A1 (en) Tarnish resistant copper alloy
CA1082493A (en) High strength lead alloy
JP4093749B2 (en) Lead-based alloys for lead-acid batteries
US2098081A (en) Aluminum alloy
US1441567A (en) Electrode
SU666897A1 (en) Alluminium-based alloy
US2140544A (en) Lead-bismuth-lithium cable sheath