Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Cell enclosure structure – e.g. – housing – casing – container,...
Patent
1979-11-01
1983-02-15
Lefevour, Charles F.
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Cell enclosure structure, e.g., housing, casing, container,...
429 88, H01M 208
Patent
active
043741878
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to a cover apparatus for venting gas generated in cell chambers to the exterior through a common exhaust passage in a monoblock storage battery of the type that the interior thereof is divided by partition walls into plural cell chambers.
BACKGROUND ART
A conventional cover apparatus in this kind of battery is such that a top wall of a cover thereof is formed with holes which are in communication with respective cell chambers, and a grooved frame body a channel shape in section is fixed to the outer surface thereof by an adhesive agent or by heat melting adhesion or the like to form an exhaust passage common to these cell chambers, and consequently the same has such inconveniences that there is such a fear that the fixed portion thereof peels off or electrolyte in the interior thereof leaks out to the outer surface of the cover through that portion, and that the same is deteriorated in appearance by the fixed portion.
DISCLOSURE OF THE INVENTION
An object of this invention is to provide a cover apparatus in this kind of storage battery which is free from such inconveniences, and it is characterized in that a rear surface of a top wall of a cover is provided with cell partition walls for partitioning into plural cell chambers, mutually facing walls crossing the cell partition walls, and a cover wall covering the lower surface of a space passage formed between the facing walls, so that the interior thereof is formed into an exhaust passage common to plural cell chambers.
Thus, by the foregoing invention, there can be provided such a cover apparatus that the same is free from any leakage of electrolyte to the outside surface of the top wall of the cover and is good in appearance.
BRIEF DESCRIPTION OF THE FIGURES IN THE DRAWINGS
FIG. 1 is a perspective view of one embodying example of this invention,
FIG. 2 is an exploded view of the same,
FIG. 3 is a perspective view of such a use condition thereof that the same is liquid-tightly applied to a battery container,
FIG. 4 is a sectional view taken along the line IV--IV in FIG. 3,
FIG. 5 is a perspective view of a part of another embodying example thereof,
FIG. 6 is a sectional view taken along the line VI--VI in FIG. 5,
FIG. 7 is a perspective view of further another example thereof,
FIG. 8 is a perspective view of the same before being finished,
FIG. 9 is a sectional view of the same in such a use condition thereof that the same is liquid-tightly applied to a battery container, and
FIGS. 10 to 17 show further modified example thereof; FIG. 10 is a top plan view of a cover thereof, FIG. 11 is a side view of the same, FIG. 12 is a rear view of the same, FIG. 13 is a sectional view taken along the line XIII--XIII, FIG. 14 is a perspective view of a housing for venting gas viewed from the reverse side thereof, FIG. 15 is a perspective view of the same viewed from the reverse side thereof, FIG. 16 is a side view, partly in section, of a modified example comprising an assembly of a cover and housing in such a condition that the same is applied integrally to a battery container, and FIG. 17 is a sectional view taken along the line XVII--XVII in FIG. 16.
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 shows one embodying example of this invention, and numeral 1 denotes a battery cover formed, by molding out of thermoplastic synthetic resin, for instance, polyproplyline as material, and the cover 1 is not different from a conventional cover in that the same is provided with a flat top wall 2, a peripheral side wall 3 bent downwards on the outer periphery thereof and plural partition walls 5 extending in the width direction on the underside surface thereof for partitioning the interior thereof into plural cell chambers 4, but according to this invention, there are provided a pair of mutually facing walls 6, 6 projecting from the rear surface of the cover and extending across these partition walls 5, and thereby there is formed therebetween an exhaust passage 7 which is composed of a channel-shaped groove and is in common
REFERENCES:
patent: 3597280 (1971-08-01), Hennen
patent: 3647556 (1972-03-01), Cox
patent: 3772088 (1973-11-01), Hennen et al.
patent: 3879227 (1975-04-01), Hennen
patent: 4107398 (1978-08-01), Lindenberg
patent: 4207387 (1980-06-01), Jutte
LeFevour Charles F.
The Furukawa Battery Co., Ltd.
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