US3823039A - Sealing closure for electric batteries - Google Patents

Sealing closure for electric batteries Download PDF

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Publication number
US3823039A
US3823039A US00269088A US26908872A US3823039A US 3823039 A US3823039 A US 3823039A US 00269088 A US00269088 A US 00269088A US 26908872 A US26908872 A US 26908872A US 3823039 A US3823039 A US 3823039A
Authority
US
United States
Prior art keywords
tray
base
projection
annular
zone
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
US00269088A
Other languages
English (en)
Inventor
D Sanchez
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.)
Pilas Secas Jupiter SA
Original Assignee
Pilas Secas Jupiter SA
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 Pilas Secas Jupiter SA filed Critical Pilas Secas Jupiter SA
Application granted granted Critical
Publication of US3823039A publication Critical patent/US3823039A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
    • H01M50/182—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for cells with a collector centrally disposed in the active mass, e.g. Leclanché cells
    • 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

  • a battery forms water during its discharge at the same time as its electrolytic paste or electrolytic bridge between anode and cathode retrogresses.
  • the pressure inside the closed container constituting the battery is raised, and this is further enhanced by the increase of heat produced by the chemical reactions taking place.
  • This has the effect that because of its higher pressure in relation to atmospheric pressure the liquid tends to escape at moments when its formation is greatest, and it is consequently necessary that the battery should at all times withstand this combined internal pressure of the gas and the liquid, since subsequently the liquid formed will react chemically with solid products, forming chemically complex substances and to a large extent re-absorbing the original liquid.
  • the device according to the present invention is essentially characterized in that the zinc tube or anode of the battery has a negative current collector tray having a base with an upwardly extending lip peripherally fastened to the bottom thereof in order to make electric contact.
  • the base of the tray has a zig-zag cross-section formed by a downwardly and outwardly extending annular projection formed of a first annular flange extending downwardly and outwardly at an acute angle to the horizontal and a second annular flange extending inwardly and upwardly from the lower extremity of the first annular flange at an acute angle to the first annular flange and the horizontal.
  • FIGS. 1 and 2 show two views of the tray, in plan and in profile, respectively;
  • FIG. 3 is a sectional elevation of the hermetic sealing of the bottom of the battery employing the tray of FIGS. 1 and 2;
  • FIG. 4 shows in detail the contraction zone of the heat-sealable material injected into the acute angle of the tray.
  • Metal tray negative pole or cathode device of the battery.
  • Zinc tube (container and anode of the battery).
  • the metal tray 1 has a base with a zig-zag cross-section formed by a downwardly and outwardly extending annular projection formed therein.
  • the annular projection consists of a first annular flange 1a extending downwardly and outwardly at an acute angle 2 from the horizontal, and a second annular flange 1b extending inwardly and upwardly from the lower extremity of the first annular flange at an acute angle to the first annular flange and the horizontal.
  • a central projection or dish-shaped portion 7 extends downwardly from the upper extremity of the second annular flange.
  • an annular lip 10 extends upwardly from the periphery of the base to contact the outer periphery of the bottom portion of zinc tube 5.
  • Thermoplastic material is injected against the annular projection once the tray has been fitted on the bottom of the anode 5 and the outer tubular casing 4 has been fitted thereover. Because of the temperature of the injected material the tubular casing 4 melts at the Zone 8 in contact with the material, so that the two are intimately welded together by fusion. In addition, because of the contraction occurring after cooling following the injection the injected material in the zone 6, contraction of the material in the angles 2 and 3 exerts pressure against the metal tray, so that the battery is hermetically sealed through this pressure on the annular projection. In this manner the liquid and gas formed in the battery are held captive between the metal tray and the thickened zone 6, the latter being shown particularly clearly in FIG. 4, where the directions of the sealing force have been shown by arrows. The contraction force is assisted by the force produced by the swelling of the casing, and the two forces result in tight sealing against the annular projection.
  • the chamber 9 formed between the central projection 7 of the tray and the base of the tube will serve to permit expansion of the gases and liquid produced in the interior of the battery.
  • the aforesaid inner side of the base may be provided with a fine film 10 of anticorrosive product.
  • a base for electric sealed batteries including a tubular anode, a sealing cover surrounding said anode, and a cathode device in contact with said anode and extending outwardly through said cover; the improvement wherein:
  • said cathode device comprises:
  • a metal tray having a base, said base having a zigzag cross-sectional profile formed by a downwardly and outwardly extending annular projection formed of a first annular flange extending downwardly and outwardly at an acute angle from the horizontal, and a second annular flange extending inwardly and upwardly from the lower extremity of said first annular flange at an acute angle to said first annular flange and to the horizontal;
  • annular dish-shaped central projection extending downwardly from the upper extremity of said second annular flange
  • thermoplastic material means inserted between said sealing cover and the bottom surface of said base of said tray for exerting a contracting pressure on said annular projection.
  • thermoplastic material means forms a unitary body rigidly welded to the interior of said sealing cover.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Prevention Of Electric Corrosion (AREA)
  • Battery Mounting, Suspending (AREA)
  • Hybrid Cells (AREA)
US00269088A 1971-12-24 1972-07-05 Sealing closure for electric batteries Expired - Lifetime US3823039A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES1971175654U ES175654Y (es) 1971-12-24 1971-12-24 Cierre estanco para pilas electricas.

Publications (1)

Publication Number Publication Date
US3823039A true US3823039A (en) 1974-07-09

Family

ID=8349932

Family Applications (1)

Application Number Title Priority Date Filing Date
US00269088A Expired - Lifetime US3823039A (en) 1971-12-24 1972-07-05 Sealing closure for electric batteries

Country Status (7)

Country Link
US (1) US3823039A (enrdf_load_html_response)
JP (1) JPS4872629A (enrdf_load_html_response)
DE (1) DE2230772C3 (enrdf_load_html_response)
ES (1) ES175654Y (enrdf_load_html_response)
FR (1) FR2164553B1 (enrdf_load_html_response)
GB (1) GB1361932A (enrdf_load_html_response)
IT (1) IT962808B (enrdf_load_html_response)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3951690A (en) * 1971-08-05 1976-04-20 Pilas Secas Juipter S.A. Base for leakproof electrochemical cells and method of forming the same
US5750283A (en) * 1994-08-24 1998-05-12 Duracell Inc. Seal for electrochemical cell
US5759713A (en) * 1994-08-24 1998-06-02 Duracell, Inc. Upward deflecting support disk for electrochemical cell seal
US20120177984A1 (en) * 2011-01-10 2012-07-12 Jaewook Lee Case for Battery and Secondary Battery Including the Case

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2015916B (en) * 1978-03-13 1982-06-09 Clint Inc Compression moulding

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS423381Y1 (enrdf_load_html_response) * 1965-02-06 1967-02-28

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3951690A (en) * 1971-08-05 1976-04-20 Pilas Secas Juipter S.A. Base for leakproof electrochemical cells and method of forming the same
US5750283A (en) * 1994-08-24 1998-05-12 Duracell Inc. Seal for electrochemical cell
US5759713A (en) * 1994-08-24 1998-06-02 Duracell, Inc. Upward deflecting support disk for electrochemical cell seal
US20120177984A1 (en) * 2011-01-10 2012-07-12 Jaewook Lee Case for Battery and Secondary Battery Including the Case
US9088013B2 (en) * 2011-01-10 2015-07-21 Samsung Sdi Co., Ltd. Case for battery comprising bent edge and seal, and secondary battery including the case

Also Published As

Publication number Publication date
DE2230772A1 (de) 1973-07-05
JPS4872629A (enrdf_load_html_response) 1973-10-01
GB1361932A (en) 1974-07-30
FR2164553A1 (enrdf_load_html_response) 1973-08-03
IT962808B (it) 1973-12-31
ES175654U (es) 1972-06-16
DE2230772C3 (de) 1980-10-30
DE2230772B2 (de) 1980-02-28
ES175654Y (es) 1972-12-16
FR2164553B1 (enrdf_load_html_response) 1976-03-12

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