Arrangement structure of power supply unit in electric vehicle

A total of four fixing points (5fl, 5fr, 5rl, 5rr) are provided at front and rear positions of left and right side members (3l, 3r) provided on a floor (2), and a traveling motor (9), an inverter (10), and a drive axle (11) are attached as a drive unit (8) to a rear suspension cross member (4) suspended and supported from each fixing point. A junction box (21), a charger (22), and a DC-AC inverter (23) are mounted as a power supply unit (20) on the upper side of a floor (2), and power is then supplied to the inverter (10) in the junction box (21). On the upper surface of the floor (2), an upper front floor cross member (16) is provided between the fixing points at the front position, an upper rear floor cross member (17) is provided between the fixing points at the rear position, and a power supply unit (20) is disposed between the beams (16, 17). 在设置于地板(2)的左右的侧梁(3l、3r)的前侧位置和后侧位置设置共计四个固定点(5fl、5fr、5rl、5rr)，在从各固定点悬挂并支承的后悬架横梁(4)安装行驶用电机(9)、逆变器(10)以及驱动桥(11)作为驱动单元(8)。在地板(2)的上侧安装接线盒(21)、充电器(22)以及DC-AC逆变器(23)作为电源单元(2