Battery vent valve

Patent · Tue Oct 25 04:00:00 EDT 1988

OSTI ID:6765464

McCartney, Jr, C P; Montgomery, C C; Meadows, C A; Cole, B A

This patent describes an electric storage battery comprising (1) a container defining a compartment containing gas-generating electro-chemical means for producing an electric current, and (2) check/relief valve means operatively associated with the container upon closing to isolate the electrochemical means from the ambient atmosphere and upon opening to vent the compartment when the internal pressure of the gas generated in the compartment exceeds a predetermined superatmospheric pressure the improvement wherein the valve comprises: a housing defining a vent chamber and including a valve seat projecting into the chamber, the seat having a sloping exterior sealing surface; an inlet in one end of the housing for admitting gas into the chamber from the compartment; means for exhausting the gas from the chamber to the environment; and a sealing member in the chamber circumscribing the inlet for controlling the internal pressures at which the opening and closing occurs and as necessary, for dumping relatively large volumes of the gas without excessive build-up of the internal pressure in the container. The sealing member comprising an annular elastomeric skirt secured at one end and having a tubular portion extending from the one end above the inlet so as to provide an internal annular surface exposed to the internal gas pressure and a sealing edge on the interior of the other end of the tubular portion circumferentially sealing engaging the sloping exterior sealing surface when the valve is closed

• Assignee: General Motors Corp., Detroit, MI
• Patent Number(s): US 4780378
• OSTI ID: 6765464
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250903* -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
ACCUMULATORS
CHEMISTRY
CONTAINERS
CONTROL
CONTROL EQUIPMENT
ELASTOMERS
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ELECTROCHEMISTRY
EQUIPMENT
FLOW REGULATORS
FLUID FLOW
GAS FLOW
OPERATION
POLYMERS
PRESSURE CONTROL
RELIEF VALVES
SEALS
TANKS
VALVES