Safety device for e.g. cylindrical sealed lithium-ion type battery in hybrid vehicle, has generator activated to release predefined quantity of gas, when temperature in generator exceeds preset threshold value for period higher than value

摘要

The device has a cut-out switch (13) with a thinning, actuated by an excess pressure inside a container (2) of a sealed electrochemical battery (1) e.g. cylindrical sealed lithium-ion type battery. A gas generator (20) in the form of cylindrical tube, is activated in a manner to release a predefined quantity of gas, when a temperature in the generator exceeds a predetermined threshold value for a period higher than the value. The threshold value ranges between 130 and 150 degree Celsius and period ranges between 10 and 20 seconds.