Abstract: An electrochemical cell battery having current collecting terminals acting as security device. The current collecting terminals utilize layers of PTC materials strategically positioned whereby if a temperature of an electrochemical cell rises above the transition temperature of the layer of PTC material, electrical current is prevented to flow between electrochemical cells by the layer of PTC material.

Abstract: An electrochemical cell battery is disclosed having current collecting terminals acting as security device. The battery includes a plurality of electrochemical cells connected in series or parallel; each electrochemical cell having a current collecting terminal connecting the positive current collectors together and a current collecting terminal connecting the negative current collectors together; the current collecting terminals each having a folded extension arm for electrically connecting two adjacent electrochemical cells together. The current collecting terminals utilize layers of PTC materials strategically positioned whereby if a temperature of an electrochemical cell rises above the transition temperature of the layer of PTC material, electrical current is prevented to flow between electrochemical cells by the layer of PTC material.

Abstract: The invention provides an electrochemical generator having a retaining apparatus for maintaining a stack of electrochemical cells in a state of compression. The electrochemical generator comprises an assembly of electrochemical cells comprising a plurality of stacked electrochemical cells and a retaining apparatus comprising holding members positioned at each extremity of the assembly and anchoring devices maintaining the holding members at a predetermined distance from one another thereby maintaining the assembly under a state of compression.

Abstract: The invention provides an electrochemical generator having a retaining apparatus for maintaining a stack of electrochemical cells in a state of compression. The electrochemical generator comprises an assembly of electrochemical cells comprising a plurality of stacked electrochemical cells and a retaining apparatus comprising holding members positioned at each extremity of the assembly and anchoring devices maintaining the holding members at a predetermined distance from one another thereby maintaining the assembly under a state of compression.

Abstract: The invention provides an apparatus for maintaining a stack of electrochemical cells in an electrochemical generator in a state of compression. The apparatus includes a spring plate and a pressure plate, the spring plate being characterized by a series of resilient lateral extensions acting as springs. The pressure plate is operative to cooperate with the spring plate for applying pressure to the stack of electrochemical cells. Also provided is an electrochemical generator comprising a stack of electrochemical cells positioned within an enclosure and an apparatus positioned within the enclosure for maintaining the stack of electrochemical cells in a state of compression.