Vehicle body lower structure

Patent metadata

Field	Value
Publication number	US-12090831-B2
Application number	US-202117513808-A
Country	US
Kind code	B2
Filing date	Oct 28, 2021
Priority date	Nov 19, 2020
Publication date	Sep 17, 2024
Grant date	Sep 17, 2024

Abstract

Provided is a vehicle body lower structure. A vehicle body lower structure includes a battery pack that encloses a drive battery. The battery pack includes a tray and a cover member attached to an upper surface of the tray with a seal member interposed, the seal member making the inside of the battery pack liquid-tight. A battery terminal, a high-voltage junction box, a control device, and a switch, which are connection portions of an electric cable, are arranged above the seal member.

First claim

What is claimed is:

1. A vehicle body lower structure, comprising a battery pack that encloses a drive battery, wherein
the battery pack comprises a tray and a cover member attached to an upper surface of the tray with a seal member interposed, the seal member making the inside of the battery pack liquid-tight; and
a battery terminal, a high-voltage junction box, a control device, and a switch, which are connection portions of an electric cable, are arranged above the seal member,
wherein the high-voltage junction box, the control device, and the switch are arranged on the inner side of a floor tunnel.

2. The vehicle body lower structure according to claim 1 , wherein the tray is made of metal,
the cover member is made of resin, and
a depth of the tray is shallower than a depth of the cover member.

3. The vehicle body lower structure according to claim 1 , wherein the high-voltage junction box, the control device, and the switch are fixed to an upper surface of a deck fixed to the cross member.

4. The vehicle body lower structure according to claim 3 , wherein the drive battery comprises a battery module arranged vertically with a longitudinal direction facing a vehicle body front-rear direction;
plural sets of battery modules, which are paired and arranged with the cross member as a boundary in a manner that the battery terminals face each other, are arranged along the longitudinal direction of the cross member; and
a high-voltage electric wire connected to the battery terminal is wired along the longitudinal direction of the cross member, bundled above the deck, and wired along the front-rear direction toward the high-voltage junction box.

5. The vehicle body lower structure according to claim 4 , wherein a water-cooled pipe is arranged along a wall surface of the tray facing an outer surface of the battery module.

6. The vehicle body lower structure according to claim 5 , wherein the battery module is sandwiched and fixed between the tray and the cross member or the deck.

7. The vehicle body lower structure according to claim 5 , wherein the tray comprises a frame having: a side beam fixed to a lower surface of a side sill, a front beam fixed to a front floor panel via a stay, and a rear beam fixed to a rear floor panel via a bracket.

8. The vehicle body lower structure according to claim 4 , wherein the battery module is sandwiched and fixed between the tray and the cross member or the deck.

9. The vehicle body lower structure according to claim 8 , wherein the tray comprises a frame having: a side beam fixed to a lower surface of a side sill, a front beam fixed to a front floor panel via a stay, and a rear beam fixed to a rear floor panel via a bracket.

10. The vehicle body lower structure according to claim 4 , wherein the tray comprises a frame having: a side beam fixed to a lower surface of a side sill, a front beam fixed to a front floor panel via a stay, and a rear beam fixed to a rear floor panel via a bracket.

11. The vehicle body lower structure according to claim 10 , wherein a bottom wall of the tray comprises a tray deformation region that deforms and absorbs impact energy between the battery module and the side beam.

12. A vehicle body lower structure, comprising a battery pack that encloses a drive battery, wherein
the battery pack comprises a tray and a cover member attached to an upper surface of the tray with a seal member interposed, the seal member making the inside of the battery pack liquid-tight; and
a battery terminal, a high-voltage junction box, a control device, and a switch, which are connection portions of an electric cable, are arranged above the seal member,
wherein the tray has a cross member, and
the high-voltage junction box and the control device are separated in a front-rear direction with the cross member as a boundary.

13. The vehicle body lower structure according to claim 12 , wherein the high-voltage junction box, the control device, and the switch are fixed to an upper surface of a deck fixed to the cross member.

14. The vehicle body lower structure according to claim 13 , wherein the drive battery comprises a battery module arranged vertically with a longitudinal direction facing a vehicle body front-rear direction;
plural sets of battery modules, which are paired and arranged with the cross member as a boundary in a manner that the battery terminals face each other, are arranged along the longitudinal direction of the cross member; and
a high-voltage electric wire connected to the battery terminal is wired along the longitudinal direction of the cross member, bundled above the deck, and wired along the front-rear direction toward the high-voltage junction box.

15. The vehicle body lower structure according to claim 14 , wherein a water-cooled pipe is arranged along a wall surface of the tray facing an outer surface of the battery module.

16. The vehicle body lower structure according to claim 15 , wherein the battery module is sandwiched and fixed between the tray and the cross member or the deck.

17. The vehicle body lower structure according to claim 15 , wherein the tray comprises a frame having: a side beam fixed to a lower surface of a side sill, a front beam fixed to a front floor panel via a stay, and a rear beam fixed to a rear floor panel via a bracket.

18. The vehicle body lower structure according to claim 14 , wherein the battery module is sandwiched and fixed between the tray and the cross member or the deck.

19. The vehicle body lower structure according to claim 18 , wherein the tray comprises a frame having: a side beam fixed to a lower surface of a side sill, a front beam fixed to a front floor panel via a stay, and a rear beam fixed to a rear floor panel via a bracket.

20. The vehicle body lower structure according to claim 14 , wherein the tray comprises a frame having: a side beam fixed to a lower surface of a side sill, a front beam fixed to a front floor panel via a stay, and a rear beam fixed to a rear floor panel via a bracket.

21. The vehicle body lower structure according to claim 20 , wherein a bottom wall of the tray comprises a tray deformation region that deforms and absorbs impact energy between the battery module and the side beam.

Assignees

• Honda Motor Co Ltd

Inventors

• Tatsuwaki Masaaki
• Yasui Ken

Classifications

• H01M50/162

  Composite material consisting of a mixture of organic and inorganic materials · CPC title

• H01M50/172

  Arrangements of electric connectors penetrating the casing · CPC title

• B60K2001/0438

  Arrangement under the floor · CPC title

• H01M50/188

  the sealing members being arranged between the lid and terminal · CPC title

• H01M50/296

  characterised by terminals of battery packs (terminals of batteries H01M50/543) · CPC title