US2454052A - Storage battery plate assembly - Google Patents

Storage battery plate assembly Download PDF

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Publication number
US2454052A
US2454052A US568797A US56879744A US2454052A US 2454052 A US2454052 A US 2454052A US 568797 A US568797 A US 568797A US 56879744 A US56879744 A US 56879744A US 2454052 A US2454052 A US 2454052A
Authority
US
United States
Prior art keywords
lugs
strap
mold
metal
storage battery
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
US568797A
Other languages
English (en)
Inventor
Charles D Galloway
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.)
Exide Technologies LLC
Original Assignee
Electric Storage Battery Co
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 to BE465144D priority Critical patent/BE465144A/xx
Priority claimed from US538564A external-priority patent/US2454051A/en
Application filed by Electric Storage Battery Co filed Critical Electric Storage Battery Co
Priority to US568797A priority patent/US2454052A/en
Priority to US569387A priority patent/US2454053A/en
Priority to FR924316D priority patent/FR924316A/fr
Application granted granted Critical
Publication of US2454052A publication Critical patent/US2454052A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • H01M50/533—Electrode connections inside a battery casing characterised by the shape of the leads or tabs
    • 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
    • H01M50/534—Electrode connections inside a battery casing characterised by the material of the leads or tabs
    • 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
    • H01M50/536—Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
    • 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 the manufacture of elements for storage batteries, and more espe-. cially to the production of an assembly group of positive or negative plates, united in parallel re-' 2 cum. (or. 136-134) 2 on terminal lugs to form an assembly embodying features of the invention;
  • If'ig. 2 is a sectional elevation on the line 22 of Fig. 1 showing also a portion of the inverted lation to a common connecting strap, to produce element; and a novel and improved structure.
  • Figure 3 is a detailed section of the strap and It has been customary to unite the plates of .7 lug portion of a storage battery element embodysuch a group to the strap by means of lugs proing features of this invention.
  • l0 represents the mol l k which lugs are united to the connecting strap of any suitable material such as cast iron. It is either by inserting them into slots in the strap provided with open top shallow mold cavities ii and puddiing molten metal by a lead burning and I! of suitable shape and dimensions for castoperation in the spaces between the lugs and the ing the desired connecting straps.
  • the assembled element comprising positive and there casting the strap around the projecting plates l3, negative plates llandxinterposed sepalugs in a suitable mold.
  • the gate caviare in intimate mechanical contact with the strap ties 23 and 24, located in gate blocks- 25 and 26, metal without fusion therewith. are shown, through which the molten metal may It is a. further object of the invention to proe p ur d into the mold cavities pr
  • Fig. l is a plan view or a mold for casting straps o5 refractory metal whose upper rectangular face i is flush with the floor of the mold cavity II and is longitudinally substantially coextensive with that cavity. In width, it corresponds with the horizontal length of the plate lugs l6 and is located immediately below the row of these positive plate lugs.
  • the vertical dimensions of the plate lugs l8 as here shown are such as to bring their ends close to but not actually in contact with the insert 21, leaving a narrow space 29 therebetween. Under some conditions, however, it may be satisfactory to bring these plate lugs into actual contact with the insert. Except for a short distance from its upper surface, the insert 21 is out of contact with the mold, there being interposed a clearance space 30 to limit the transfer of heat from the insert to the mold.
  • the insert 21 is provided with a downwardly extending projection 3
  • the insert 21 is provided with a duct 33 through which cooling-liquid may be circulated and suitably controlled as -by the valve 34.
  • the assembled element comprising the desired number of positive and negative plates with interposed separators clamped together in their finalrelative positions, is inverted and supported on the mold as'shown in Fig. 2, with the separators resting on the slab i8 and the plate lugs extending into the mold cavities II and I2, with their ends above and close to or in contact with the upper surfaces of the inserts 21 and 28, respectively.
  • Molten metal preferably lead-antimony alloy
  • the temperature of the molten metal is such that the plate lugs will not be melted or softened but will retain their shape or physical identity, as it has been found that such melting or softening produces recrystallization or grain growth and weakening of the lugs, causing them to break when subjected to stress or vibration in service.
  • the shrinkage of the molten metal on cooling and solidifying which occurs as the molten metal contacts the cooler surfaces of the lugs and mold, firmly grips the plate lugs and holds them mechanically attached to the straps.
  • mechanical contact between the lugs and the strap does not provide maximum and uniform electrical conductivity to insure minimum voltage drop and equal distribution of current between the plates when discharging at high rates.
  • the under surface of the strap-casting, formed by the molten metal new around the plate lugs, as it rests in the mold, together with the tips of the plate lugs are in a brief period of time raised toan elevated temperature to effect a welding or fusing of the lugs to the strap for only a short distance above the floor of the mold and without melting or fusing the roots or major portion of the lugs.
  • the heat necessary for the localized welding or fusing of the lugs is applied through the super-heating inserts 21 and 28.
  • the shanks of the inserts are surrounded by high-frequency heating coils 32.
  • High-frequency current is passed through the heating coils 22 to heat inductively the inserts 21 and 2B, the intensity and duration of the current being such as to melt the'metal just above the upper surfaces of the inserts and melt the tips of the plate lugs, thus welding them together for only a short distance, without melting or softening the roots or major portion of the lugs gripped mechanically in the strap-casting.
  • the intensity and duration of the current required to obtain the best results will vary with the dimensions of the strap-casting and the size and spacing of the plate lugs. With the volume of current available from standard apparatus for inductive heating applied to a standard type of storage battery element, a few seconds has been found adequate to give satisfactory results. As soon as the current is interrupted, cooling-water is circulated through the ducts in'the inserts to prevent further heating effect and also to hasten the cooling, solidification and final shrinkage of the strap around the lug roots.
  • the length of the mold cavities II and I2 may be made sufilcient to provide for the maximum width of element. For smaller elements, it is only necessary to block off the ends of the mold cavities. No other adjustment is necessary to provide for elements of various numbers or thickness of plates or various plate spacing.
  • a group of storage battery plates assembled by their conducting lugs to a suitable connecting strap, wherein the plate lugs at their roots and over the major portion of their length adjacent the plates are mechanically tightly gripped by the adjacent metal of the strap without being autogenously welded thereto, while the tips of the lugs are autogenously welded to the adjacent metal of the strap, as shown in Fig. 3.
  • a storage battery element comprising alternately disposed positive and negative plates with interposed separators, said plates provided with terminal lugs assembled respectively to positive and negative straps wherein the roots of the lugs are tightly shrinkage gripped by but separate from the adjacent metal of the strap and the tips 01. the lugs areautogenously welded to said metal.
  • a group of plates provided with terminal lugs assembled to a connecting strap wherein the lugs over a major portion of their length adjacent the plates are tight- 1y shrinkage gripped by but are separate from the adJacent metal of the strap and the tips of the lugs are autogenously welded to said metal.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Batteries Or Terminals (AREA)
US568797A 1944-06-03 1944-12-19 Storage battery plate assembly Expired - Lifetime US2454052A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE465144D BE465144A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1944-06-03
US568797A US2454052A (en) 1944-06-03 1944-12-19 Storage battery plate assembly
US569387A US2454053A (en) 1944-06-03 1944-12-22 Process for the manufacture of storage batteries
FR924316D FR924316A (fr) 1944-06-03 1946-03-21 Perfectionnements aux accumulateurs électriques

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US538564A US2454051A (en) 1944-06-03 1944-06-03 Mold for the manufacture of storage batteries
US568797A US2454052A (en) 1944-06-03 1944-12-19 Storage battery plate assembly

Publications (1)

Publication Number Publication Date
US2454052A true US2454052A (en) 1948-11-16

Family

ID=27065856

Family Applications (1)

Application Number Title Priority Date Filing Date
US568797A Expired - Lifetime US2454052A (en) 1944-06-03 1944-12-19 Storage battery plate assembly

Country Status (3)

Country Link
US (1) US2454052A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BE (1) BE465144A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR924316A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US911168A (en) * 1908-04-13 1909-02-02 Edward W Smith Storage-battery plate.
US1183810A (en) * 1914-12-26 1916-05-16 William Gardiner Battery construction.
US1324426A (en) * 1919-12-09 of niagara falls
US1811292A (en) * 1928-12-22 1931-06-23 Engineering Products Corp Manufacture of storage battery units
US2066691A (en) * 1932-02-27 1937-01-05 Willard Storage Battery Co Battery terminal
US2242599A (en) * 1939-08-01 1941-05-20 Willard Storage Battery Co Storage battery

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1324426A (en) * 1919-12-09 of niagara falls
US911168A (en) * 1908-04-13 1909-02-02 Edward W Smith Storage-battery plate.
US1183810A (en) * 1914-12-26 1916-05-16 William Gardiner Battery construction.
US1811292A (en) * 1928-12-22 1931-06-23 Engineering Products Corp Manufacture of storage battery units
US2066691A (en) * 1932-02-27 1937-01-05 Willard Storage Battery Co Battery terminal
US2242599A (en) * 1939-08-01 1941-05-20 Willard Storage Battery Co Storage battery

Also Published As

Publication number Publication date
BE465144A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR924316A (fr) 1947-08-01

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