US1561775A - Treatment of plates for storage batteries - Google Patents

Treatment of plates for storage batteries Download PDF

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Publication number
US1561775A
US1561775A US647191A US64719123A US1561775A US 1561775 A US1561775 A US 1561775A US 647191 A US647191 A US 647191A US 64719123 A US64719123 A US 64719123A US 1561775 A US1561775 A US 1561775A
Authority
US
United States
Prior art keywords
plates
plate
treatment
storage batteries
sulphuric acid
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
US647191A
Inventor
Campbell C Carpenter
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.)
US Light and Heat Corp
Original Assignee
US Light and Heat Corp
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 US Light and Heat Corp filed Critical US Light and Heat Corp
Priority to US647191A priority Critical patent/US1561775A/en
Application granted granted Critical
Publication of US1561775A publication Critical patent/US1561775A/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
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/14—Electrodes for lead-acid accumulators
    • H01M4/16—Processes of manufacture
    • H01M4/20—Processes of manufacture of pasted electrodes
    • 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
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49108—Electric battery cell making

Definitions

  • This invention relates to treatment of plates for storage batteries.
  • 'An object of the invention is to facilitate the handling of freshly pasted plates.
  • a further object of the invention is to prevent an excess of scrap in plate manufacturing.
  • a further object of the invention is to provide an improved method of hardening the surface of a freshly pasted plate.
  • the freshly pasted plates are passed between rubber covered rolls, preferably in a vertical direction, and a stream of sulphuric acid,
  • the rolls preferably of approxin lately 1.400 specific gravit is applied at the rolls on both sides of the plate, the rolls exerting pressure on the plate at the same time that the acid is applied.
  • the plates may be dried over a steam table or in a suitable oven at approximately 212 F. for a period of approximately fifteen minutes. This latter step will additionally harden the plate surface but is not essential, as bene ficial results are obtained from the simultaneous application of acid and pressure alone.
  • a process for treating storage battery plates which comprises applying sulphuric acid to the surface of the plate and simultaneously applying a rolling pressure to the plate surface.
  • a process of treating battery plates which comprises passing freshly pasted plates in a vertical direction between r'olls exerting a yielding pressure on the plate surface and simultaneously applying sulphuric acid to the surface.
  • a process of treating battery plates which comprises passing the freshly pasted plates in a vertical direction between rubber rolls under pressure and simultaneously applying sulphuric acid of approximately 1.400 specific gravity on both sides of the plate.
  • a process of treating battery plates which comprises simultaneously applying sulphuric acid and pressure to the plate surfaces and subsequently drying the plate by the action of heat.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Secondary Cells (AREA)

Description

Patented Nov. 17, 1925.
UNITED STATES PATENT OFFICE.
No Drawing.
To all whom it may concern:
Be it known that I, CAMPBELL C. CARPEN- TEE, a citizen of the United States, residing at Niagara Falls, in the county of Niagara and State of New York, have invented new and useful Improvements in the Treatment of Plates for Storage Batteries, of which the following is a specification.
This invention, relates to treatment of plates for storage batteries.
'An object of the invention is to facilitate the handling of freshly pasted plates.
A further object of the invention is to prevent an excess of scrap in plate manufacturing.
A further object of the invention is to provide an improved method of hardening the surface of a freshly pasted plate.
Various methods have been devised for treatment of freshly pasted plates having for their objects the hardening of the plate surface to facilitate handling and to prevent loss of active material from the grid during subsequent operations of the plates. A popular method has been to dip the freshly pasted plate .in sulphuric acid. It has been found, however, that this causes excessive scrap, due to the fact that the sulphuric acid changes the surface of the plate to lead sulphate and leaves a distinct line of cleavage between the sulphate and. oxide of the active material. Probably due to the formation of gas, this thin lead sulphate layer is very aptto separate from the oxide and peel off, thus destroying the value of the plate.
In describing the present invention, reference is made to the details of the process which represents the best embodiment of the invention so far determined. It is not intended, however, that the specific description shall be construed except as illustrating this preferred embodiment, as it is obvious that changes may be made in details without departing from the spirit of the invention as set forth in the appended claims.
According to the present invention, the freshly pasted plates are passed between rubber covered rolls, preferably in a vertical direction, and a stream of sulphuric acid,
Application filed June 22, 1923.
Serial No. 647,191.
preferably of approxin lately 1.400 specific gravit is applied at the rolls on both sides of the plate, the rolls exerting pressure on the plate at the same time that the acid is applied. As a subsequent step the plates may be dried over a steam table or in a suitable oven at approximately 212 F. for a period of approximately fifteen minutes. This latter step will additionally harden the plate surface but is not essential, as bene ficial results are obtained from the simultaneous application of acid and pressure alone.
It has been found that plates so treated do not show the same distinct line of cleavage between the sulphate and oxide as is found in the dipping process and may be handled in the subsequent operations of battery manufacture without excessive damage and scrap.
What I claim as new and desire to secure by Letters Patent of the United States is- 1. A process for treating storage battery plates which comprises applying sulphuric acid to the surface of the plate and simultaneously applying a rolling pressure to the plate surface.
2. A process of treating battery plates which comprises passing freshly pasted plates in a vertical direction between r'olls exerting a yielding pressure on the plate surface and simultaneously applying sulphuric acid to the surface.
3. A process of treating battery plates which comprises passing the freshly pasted plates in a vertical direction between rubber rolls under pressure and simultaneously applying sulphuric acid of approximately 1.400 specific gravity on both sides of the plate.
4. A process of treating battery plates which comprises simultaneously applying sulphuric acid and pressure to the plate surfaces and subsequently drying the plate by the action of heat.
In witness whereof, I have hereunto subscribed my name.
CAMPBELL G. CARPENTER.
US647191A 1923-06-22 1923-06-22 Treatment of plates for storage batteries Expired - Lifetime US1561775A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US647191A US1561775A (en) 1923-06-22 1923-06-22 Treatment of plates for storage batteries

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US647191A US1561775A (en) 1923-06-22 1923-06-22 Treatment of plates for storage batteries

Publications (1)

Publication Number Publication Date
US1561775A true US1561775A (en) 1925-11-17

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Family Applications (1)

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US647191A Expired - Lifetime US1561775A (en) 1923-06-22 1923-06-22 Treatment of plates for storage batteries

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4185142A (en) * 1978-08-09 1980-01-22 Diamond Shamrock Corporation Oxygen electrode rejuvenation methods

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4185142A (en) * 1978-08-09 1980-01-22 Diamond Shamrock Corporation Oxygen electrode rejuvenation methods

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