Sodium sulphur batteries and cell modules therefor
AssigneeChloride Silent Power Limited
InventorPeter J. Bindin
Life of this patent
Estimating the term…
Abstract
A sodium sulphur battery formed of a plurality of modules each containing a cell or cells has a passage through each module for a heating and/or cooling fluid and thermostatically controlled valve means for controlling the flow of fluid through this passage which valve means is open at temperatures above a predetermined temperature, e.g. 370.degree. C. for passage of a coolant fluid and is also open at temperatures below another predetermined temperature, e.g. 300.degree. C. for passage of a heating fluid. The valve is preferably gradually closed and opened between these tempteratures. Each valve is controlled in accordance with the temperature of the associated module.
Claims16
A module for a sodium sulphur battery comprising a container having at least one sodium sulphur cell, a flow passage for a heat transfer fluid through the container, a flow control valve in the flow passage, and temperature-responsive means arranged to control said valve in accordance with temperature and operative to close the flow control valve to prevent or reduce flow of fluid through said passage over a predetermined temperature range and to open said flow control valve at temperatures both above and below said predetermined temperature range.
A sodium sulphur battery comprising a plurality of modules, each module comprising a container having at least one sodium sulphur cell of elongate form, a flow passage for a heat transfer fluid through the container, a flow control valve in the flow passage controlled by temperature-responsive means operative to close the flow control valve and thereby to prevent or reduce flow of the heat transfer fluid through the module over a predetermined temperature range within which the cell is operative, the flow control valve being open at temperatures above and below said predetermined temperature range and means for passing said heat transfer fluid to said modules to flow therethrough when the respective valves are open.
Dependencies are inferred from the claim text.