A three element fuse that can be triggered 'open' in the event of fire

Abstract

A simple, safe, inexpensive and exact method is described for disconnecting the bus conduits from the battery strings in the event of fire or catastrophe by means of a fuse that can be triggered open. The trigger open, self-destruct link is essentially a melt system derived from a self contained oxidizable chemical package. This is achieved by means of an ultrafine aluminothermic slow alloy emulsion that is soft-sintered on to each side of the zinc alloy fuse link. An ultrafine magnesium alloy ignitor is embedded into the emulsion surface. The ignitor can be commanded to turn on by the electronic package, causing the emulsion to burn 'easy' and melt the link. This entire discrete link is ceramic encapsulated; therefore, it does not pose any fire threat. It is also further embedded into extinguishing sand.<>