Vehicle lower-part structure

Patent metadata

Field	Value
Publication number	US-11198472-B2
Application number	US-202016906527-A
Country	US
Kind code	B2
Filing date	Jun 19, 2020
Priority date	Jun 28, 2019
Publication date	Dec 14, 2021
Grant date	Dec 14, 2021

Abstract

Provided is a vehicle lower-part structure including a pair of center side members arranged under a floor of a vehicle; a first cross member and a second cross member connecting the pair of center side members; a main battery arranged in an underfloor space; one or more support plates arranged at a corner of the underfloor space; and a water tank placed on the support plate, in which the support plate is connected to both the center side member and the first or second cross member and connects the two.

First claim

The invention claimed is:

1. A vehicle lower-part structure comprising:
a pair of center side members extending in a vehicle front-rear direction under a floor of a vehicle;
a first cross member extending in a vehicle width direction and connecting the pair of center side members;
a second cross member extending in the vehicle width direction on a rear side in the vehicle front-rear direction with respect to the first cross member and connecting the pair of center side members;
a main battery that is arranged in an underfloor space surrounded by the pair of center side members, the first cross member, and the second cross member, and supplies power to a power unit;
one or more support members of a plate form arranged at a corner of the underfloor space; and
an on-vehicle device placed on each of the one or more support members, wherein
an upper part of each of the one or more support members is connected to both a first connection portion connected to a bottom surface of the center side member and a second connection portion connected to a bottom surface of the first or second cross member, and connects the two.

2. The vehicle lower-part structure according to claim 1 , wherein
the on-vehicle device is a liquid tank storing a liquid.

3. The vehicle lower-part structure according to claim 2 , wherein
the on-vehicle device is a water tank that stores water used in an on-vehicle air conditioner.

4. The vehicle lower-part structure according to claim 1 , wherein
the on-vehicle device is an air tank that stores air used in an air suspension.

5. The vehicle lower-part structure according to claim 1 , wherein
the on-vehicle device is an auxiliary battery that supplies power to a vehicle auxiliary device.

6. The vehicle lower-part structure according to claim 1 , wherein
the vehicle is provided with a door only on one side surface in the vehicle width direction, and
the on-vehicle device is arranged only at a corner of the underfloor space on a side opposite to a door in the vehicle width direction, and is not arranged at a corner on the same side as the door in the vehicle width direction.

7. The vehicle lower-part structure according to claim 1 , wherein
the one or more support members includes four support members which are provided at all four corners of the underfloor space, and
the on-vehicle device is placed on each of the four support members.

Assignees

• Toyota Motor Co Ltd

Inventors

• Nagaya Satoru
• Toda Yoshimi
• Ikeda Yozo
• Hattori Ryo

Classifications

• Y02T10/70

  Energy storage systems for electromobility, e.g. batteries · CPC title

• B62D21/03 Primary

  transverse members providing body support · CPC title

• B62D21/02 Primary

  comprising longitudinally or transversely arranged frame members · CPC title

• B62D25/025

  Side sills thereof · CPC title

• B62D25/20

  Floors or bottom sub-units {(sub-frames for mounting engine or suspensions B62D21/11; drip trays F16N31/006)} · CPC title