Battery pack tray

Patent metadata

Field	Value
Publication number	US-8967312-B2
Application number	US-201313940735-A
Country	US
Kind code	B2
Filing date	Jul 12, 2013
Priority date	Jul 13, 2012
Publication date	Mar 3, 2015
Grant date	Mar 3, 2015

Abstract

A battery pack tray includes: a tray body including: a bottom which has a concave-convex portion that includes convex and concave portions which extend in a first direction; and a wall which is upward bent from a periphery of the bottom; reinforcement frames provided along opposed wall portions of the wall in a second direction perpendicular to the first direction; a cross member disposed on an upper surface of the concave-convex portion, and forming a first closed cross-section with the concave-convex portion, both end portions of the cross member being secured to the reinforcement frames; an inner cross member secured to an upper surface of the cross member, both end portions of the inner cross member being secured to the reinforcement frames; and attachment brackets secured to the reinforcement frames.

First claim

What is claimed is:

1. A battery pack tray which constitutes a battery pack to be mounted on a vehicle, the battery pack tray comprising:
a tray body including: a bottom which has a concave-convex portion that includes a convex portion and a concave portion which extend in a first direction and on which a battery is to be placed; and a wall which is upward bent from a periphery of the bottom, the tray body having a substantially rectangular shape in a plan view;
reinforcement frames provided along a pair of opposed wall portions of the wall in a second direction perpendicular to the first direction;
a cross member disposed on an upper surface of the concave-convex portion, and forming a first closed cross-section with the concave-convex portion, both end portions of the cross member being secured to the reinforcement frames;
an inner cross member secured to an upper surface of the cross member, both end portions of the inner cross member being secured to the reinforcement frames; and
attachment brackets used for attachment to a vehicle body, and secured to the reinforcement frames, the attachment brackets projecting to an outside of the tray body in a projection direction.

2. The battery pack tray according to claim 1 , wherein each of the reinforcement frames includes: an inner frame forming a second closed cross-section with the wall, at a side where the battery is to be placed; and an outer frame forming a third closed cross-section with the wall, at a position opposed to the inner frame across the wall.

3. The battery pack tray according to claim 2 , wherein, in the inner cross member, a lower portion of a section shape has an opening, and an end edge of the opening is secured to the cross member, thereby forming a fourth closed cross-section, and both end portions of the inner cross member are secured to the inner frames.

4. The battery pack tray according to claim 2 , wherein a position where one of the attachment brackets is attached to the outer frame is located in a portion opposed to a range where the cross member and the inner frame are coupled to each other.

5. The battery pack tray according to claim 2 , wherein each of the attachment brackets includes:
an upper bracket formed with a recess in which a middle portion of a section is recessed along the projection direction, a tip end portion of the upper bracket formed with an attachment hole for attaching to the vehicle body, a basal end portion of the upper bracket coupled to the outer frame; and
a lower bracket, one end portion of which forms a fifth closed cross-section with the recess in a range from a middle portion in the projection direction of the upper bracket to the basal end portion, and the other end portion of which is secured to a portion of the outer frame where the outer frame is joined to the tray body.

Assignees

• Mitsubishi Motors Corp

Inventors

• Yanagi Kenji

Classifications

• B60K1/04 Primary

  of the electric storage means for propulsion · CPC title

• B60K2001/0472

  from below · CPC title

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• B60K2001/0438

  Arrangement under the floor · CPC title

• B60L50/64

  Constructional details of batteries specially adapted for electric vehicles · CPC title