Suzuki

A lower structure for an electric vehicle includes: a side sill 2 that is disposed outside a battery pack 1; a floor cross member 41 that is joined to the upper part of a floor panel 42; and a reinforcing bracket 30 that is disposed on the lower side of the outer part of the floor cross member 41 with the floor panel 42 interposed therebetween, wherein the reinforcing bracket 30 includes vertical wall parts 31 and 32 that are spaced apart from each other in the longitudinal direction and are joined to the side sill 2 and the floor part, and an inside wall part 33 that connects the vertical wall parts, is spaced on the outer part of the battery pack, inclines downward as the inside wall part extends outward, and extends to the lower part of the side sill 2, and fragile portions 31h and 32h are provided in the outer portions of the upper parts of the vertical wall parts 31 and 32.

An electric vehicle V includes a drive unit 4, a pair of side frames 61a and 61b, a battery case 7, and a cross member 81 disposed forward of the battery case 7 and extending in the vehicle lateral direction DW between the pair of side frames 61a and 61b. The drive unit 4 includes an electric motor 41 configured to be driven by electric power stored in the battery, and the cross member 81 includes a rear-facing wall 812a facing toward the battery case 7. The rear-facing wall 812a is inclined downward toward a front side in the vehicle longitudinal direction DL, and the battery case 7 is disposed with a downward offset relative to the rear-facing wall 812a.

An electric vehicle V includes a drive unit 4, a pair of side frames 61a and 61b, and a cross member 63. The drive unit 4 is mounted to the cross member 63 at a plurality of mounting portions 641a and 641b arranged so as to sandwich the rotational axis in the vehicle lateral direction (DW), and is supported relative to the pair of side frames 61a and 61b via the cross member 63. The cross member 63 includes a main body portion 631, and a pair of coupling portions 632a and 632b, and each of the coupling portions 632a and 632b is coupled to a corresponding one of the side frames 61a and 61b. The main body portion 631 includes an intermediate portion 63a located between two of the mounting portions 641a and 641b that sandwich the rotational axis, and arm portions 63b1 and 63b2 extending outward in the vehicle lateral direction DW from the intermediate portion 63a. The main body portion 631 is formed such that a vertical dimension of the arm portions 63b1 and 63b2 decreases from an inner side toward an outer side in the vehicle lateral direction DW, and the arm portions 63b1 and 63b2 are connected to the coupling portions 632a and 632b at outer ends thereof. The outer ends of the arm portions 63b1 and 63b2 are aligned with the mounting portions 641a and 641b in the vehicle lateral direction DW.

A battery case mounting structure includes: paired side frames (6) extending in a front-back direction below a floor member (3) of an electric vehicle (1); a floor supporting member (17) supporting the floor member to the paired side frames (6); a battery case (7); and a plurality of side brackets supporting the battery case (7) between the paired side frames (6). The side brackets includes a side bracket (10) fixed to one (4) of the paired side frames (6) by being sandwiched between the one side frame (4) and the floor supporting member (17), and a side bracket (11) fixed to another (5) of the paired side frames (6) by being sandwiched between the other side frame (5) and the floor supporting member, thereby securing a minimum road clearance.

An electric vehicle V includes a drive unit 4, a pair of side frames 61a and 61b extending in a vehicle longitudinal direction DL and arranged with a spacing therebetween in a vehicle lateral direction DW, and a support mechanism 6 that includes brackets 62a and 62b respectively attached to the pair of side frames 61a and 61b and supports the drive unit 4 between the brackets 62a and 62b. The drive unit 4 includes an electric motor 41 having a rotational axis extending in the vehicle longitudinal direction DL, and an inverter 42 configured to control electric power supplied to the electric motor 41, and the inverter 42 is disposed on one side in the vehicle lateral direction DW relative to the electric motor 41 in such a situation that at least a portion of the inverter 42 overlaps the brackets 62a and 62b in a side view of the electric vehicle V as viewed from the one side in the vehicle lateral direction DW.

An electric vehicle V includes a drive unit 4, a pair of side frames 61a and 61b, and a cross member 63. The drive unit 4 is mounted to the cross member 63 at a plurality of mounting portions 641. The cross member 63 includes a main body portion 631, and a pair of coupling portions 632a and 632b, and each of the coupling portions 632a, 632b is coupled to a corresponding side frame 61a, 61b. The main body portion 631 is divided into a first member A1 forming an intermediate portion 63a located between two mounting portions 641a and 641b, and second members B1 and B2 each forming an arm portion 63b1, 63b2 extending in the vehicle lateral direction DW outward of the intermediate portion 63a. In a front view of the electric vehicle V, defining a straight line connecting a rotational-shaft center C3 of the electric motor 41 and respective centers C2a, C2b of the two mounting portions 641a, 641b as a first virtual line VL1, and a straight line extending perpendicular to the first virtual line VL1 as a second virtual line VL2, the second members B1 and B2 extend below the mounting portions 641a and 641b, beyond the second virtual line VL2 in the vehicle lateral direction DW, and include a reinforcement portion E overlapping the first member A1 in the vehicle lateral direction DW.

An electric vehicle V includes a drive unit 4 serving as a driving power source for propelling the vehicle, a vehicle body frame F including a pair of side frames 61a and 61b extending in a vehicle longitudinal direction DL and spaced apart from each other in a vehicle lateral direction DW, and a battery case 7 configured to accommodate a battery, and supported between the pair of side frames 61a and 61b and disposed at a predetermined height position. The drive unit 4 includes an electric motor 41 configured to be driven by electric power stored in the battery, and at least the electric motor 41 of the drive unit 4 is disposed below the battery case 7.

An electric outboard machine (1) for propelling a boat, includes: an outer case (3) provided in a lower part of the machine; a propeller (21) rotatably supported in the outer case; and a motor (25) provided in the outer case and rotates the propeller. The outer case (3) includes a cylindrical portion (5) including an axis. The cylindrical portion (5) includes a front motor support portion (61) and a rear motor support portion (81, 101). The rear motor support portion is a member that is formed in an annular shape and detachable from the cylindrical portion, and the rear motor support portion is attached to the cylindrical portion by coupling an outer circumferential surface of the rear motor support portion and an inner circumferential surface of the cylindrical portion to each other.

An electric outboard machine (1) for propelling a boat, includes: a case (3) provided in a lower part of the machine; a propeller (51) rotatably supported in the case; and a motor (55) provided in the case and rotates the propeller. The case (3) includes: a cylindrical portion (5) including an axis, being formed in a cylindrical shape, and being provided with a motor accommodating portion (10); an outer lid (41, 81) coupled to a peripheral edge portion (5B) of an opening portion (5A) on a front side of the cylindrical portion, and closes the opening portion; a plate-shaped member (31) provided in the cylindrical portion behind the outer lid and in front of the motor accommodating portion, having a plate-like outer shape extending in up-down and left-right directions in an overall view, being fitted into the cylindrical portion and fixed to the cylindrical portion, and a connecting member (46) connects the outer lid and the plate-shaped member to each other.

A charge control device (7) includes: an AC generator (14); an inverter (15) which can as well act as a rectifier and converts electric power; a first battery (25) connected to the rectifier and charged by the electric power; a capacitor (16) connected in parallel with the first battery to the rectifier and charged by the electric power; a DC-DC converter (18) that converts voltage output from the rectifier from DC to DC; a first switch (19) that switches between connection and disconnection between the inverter and the capacitor; and a control unit (21) configured to: connect the inverter and the capacitor by controlling the first switch when output voltage of the inverter when acting as a rectifier is greater than the voltage of the capacitor during a power generating operation of the AC generator; and disconnect the inverter and the capacitor by controlling the first switch when the inverter and the capacitor are connected and the capacitor is discharging during a power generating operation of the AC generator.