Lower structure for hybrid automobile

Patent metadata

Field	Value
Publication number	US-12128753-B2
Application number	US-202217867715-A
Country	US
Kind code	B2
Filing date	Jul 19, 2022
Priority date	Jul 26, 2021
Publication date	Oct 29, 2024
Grant date	Oct 29, 2024

Abstract

A lower structure for a hybrid automobile in which a high-voltage battery is disposed in a lower surface of a floor panel includes an engine exhaust system component which is disposed in front of the high-voltage battery in the lower surface of the floor panel and on one vehicle-width-direction side of a center in a vehicle width direction and high-voltage devices which are disposed in front of the high-voltage battery and on another vehicle-width-direction side of the center in the vehicle width direction. In-vehicle equipment is disposed between the high-voltage battery and the high-voltage devices, and the in-vehicle equipment is in an inclined state where an upper surface of the in-vehicle equipment is inclined in a front-rear direction such that the in-vehicle equipment has a shorter dimension in the front-rear direction than a dimension in a horizontal state where the upper surface becomes horizontal.

First claim

What is claimed is:

1. A lower structure for a hybrid automobile in which a high-voltage battery is disposed in a lower surface of a floor panel, the lower structure comprising:
an engine exhaust system component which is disposed in front of the high-voltage battery in the lower surface of the floor panel and on one vehicle-width-direction side of a center in a vehicle width direction; and
a high-voltage device which is disposed in front of the high-voltage battery in the lower surface of the floor panel and on another vehicle-width-direction side of the center in the vehicle width direction, the lower structure being characterized in that
in-vehicle equipment is disposed between the high-voltage battery and the high-voltage device, and
the in-vehicle equipment is in an inclined state where an upper surface of the in-vehicle equipment is inclined in a front-rear direction such that the in-vehicle equipment has a shorter dimension in the front-rear direction than a dimension in a horizontal state where the upper surface becomes horizontal.

2. The lower structure for a hybrid automobile according to claim 1 , characterized in that
the high-voltage battery retreats such that a front face lower portion is positioned on a vehicle rear side of a front face upper portion,
the in-vehicle equipment is in an inclined state where the upper surface is downward inclined toward vehicle rear such that a back end comes to a lower position than a front end, and
a back end of the upper surface of the in-vehicle equipment faces the front face lower portion of the high-voltage battery.

3. The lower structure for a hybrid automobile according to claim 1 , characterized in that
the in-vehicle equipment is fixed to a mounting plate having an upper surface downward inclined toward vehicle rear and is connected to the floor panel via the mounting plate, and
an upper surface back end of the mounting plate faces the front face lower portion of the high-voltage battery.

4. The lower structure for a hybrid automobile according to claim 3 , characterized in that
the high-voltage battery includes a harness connection portion in the front face lower portion.

5. The lower structure for a hybrid automobile according to claim 4 , characterized in that
the in-vehicle equipment is a high-voltage apparatus which is supplied with electric power from the harness connection portion via a harness.

6. The lower structure for a hybrid automobile according to claim 5 , characterized in that
the high-voltage apparatus is a positive temperature coefficient (PTC) heater for electrically heating engine cooling water.

7. The lower structure for a hybrid automobile according to claim 6 , wherein the mounting plate supports the PTC heater during an impact in a vehicle collision.

8. The lower structure for a hybrid automobile according to claim 7 , wherein the impact of the vehicle collision moves the mounting plate and the PTC heater to a rear side of the lower structure.

9. The lower structure for a hybrid automobile according to claim 2 , characterized in that
the in-vehicle equipment is fixed to a mounting plate having an upper surface downward inclined toward vehicle rear and is connected to the floor panel via the mounting plate, and
an upper surface back end of the mounting plate faces the front face lower portion of the high-voltage battery.

10. The lower structure for a hybrid automobile according to claim 9 , characterized in that
the high-voltage battery includes a harness connection portion in the front face lower portion.

11. The lower structure for a hybrid automobile according to claim 10 , characterized in that
the in-vehicle equipment is a high-voltage apparatus which is supplied with electric power from the harness connection portion via a harness.

12. The lower structure for a hybrid automobile according to claim 11 , characterized in that
the high-voltage apparatus is a PTC heater for electrically heating engine cooling water.

Assignees

• Mazda Motor

Inventors

• Ikeda Yoshinori
• Shibata Tsutomu
• Sawada Yosuke
• Shimomura Tetsuya

Classifications

• F24H4/00

  Fluid heaters characterised by the use of heat pumps · CPC title

• F01N13/1805

  Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body (pipe joints in general F16L; fixing auxiliaries in motor vehicles in general B60K) · CPC title

• B62D21/152

  Front or rear frames · CPC title

• B60R16/0207

  Wire harnesses · CPC title

• B60K2001/0438

  Arrangement under the floor · CPC title