when a current is applied to the first collector plate 132 and the loss of waste heat generated by the end cell when the vehicle is started at temperatures below zero to increase the heating rate of the cell and improve the starting speed of the stack accordingly since a thermal loss may be minimized by utilizing the gap which is formed in the current collector 130 by the thermal contraction of the stack cells 110 when the fuel cell vehicle is started at temperatures below zero and is driven at low temperatures as a thermal insulator it may be possible to realize the rapid thawing and heating of the end cell to mitigate a reduction in cell voltage due to the low temperature of the end cell in addition when the temperature of the cells disposed adjacent to each end plate 120 at both ends of the stack 100 is increased by the joule heating of the first collector plate 132 and the waste heat of the end cell and the vehicle is started normally the stack cells 110 may be thermally expanded in the stacked direction thereof by the increase in temperature of the stack particularly the first collector plate 132 may be moved from the end cell to the end plate 120 to cause the first collector plate 132 to be pressed against the second collector plate 134 accordingly the multilayer current collector 130 including the first and second collector plates 132 and 134 may perform current collection and application.