Method of cooling zinc halogen batteries

This disclosure relates to a method of cooling zinc halogen batteries which involves the use of a liquid-overfeed cooling system utilizing a fluorocarbon refrigerant or the like. This new method is adaptable for use in either cooling the battery store water during charge so that a solid halogen hydrate will form, or for use in cooling the battery electrolyte, or both. This direct-cooling, liquid-overfeed system is especially suited for use with a series of batteries as is proposed for use in utility load leveling systems and provides several advantages over other conventional cooling alternatives including an improved coefficient of performance, better heat transfer and temperature control, and reduced capital cost.