Sealed maintenance-free lead-acid storage battery

Details Sealed maintenance-free lead-acid storage battery Sealed maintenance-free lead-acid storage battery

1988-08-19

1990-01-16

Kalafut, Stephen J.

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

429163, 429179, H07M 614

Patent

active

048943002

ABSTRACT:
The invention is directed to a sealed, maintenance-free lead-acid storage battery of high capacity employing a thixotropic sulfuric acid gel as the electrolyte.
In order to permit horizontal mounting without incurring the risk of escaping sulfuric acid during the charging process, the lower portion of the free gas space between electrode plates (1, 2) and housing lid (7) including the positive terminal (3) is filled with foamed material (9) which is preferably separated by means of a parting angle piece (10, 11) from the upper free gas space (6) including a pressure relief valve (8).

REFERENCES:
patent: 3711332 (1973-01-01), Bastacky
patent: 4391036 (1983-07-01), Kishimoto et al.
patent: 4687718 (1987-08-01), Chreitzberg et al.
patent: 4751154 (1988-06-01), Binder et al.

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