Electric motor vehicle battery support assembly
AssigneeMazda Motor Corporation
InventorsMorihide Yamada, Kazuhisa Hatano, Hisashi Akune, Munenari Takahashi
Life of this patent
Estimating the term…
Abstract
A battery unit which stores plural battery modules therein is attached to respective lower faces of a pair of floor frames at its both sides. The battery unit comprises an attaching bracket which protrudes substantially horizontally from the battery case and is positioned just below the lower face of the floor frame with a distance therebetween. A specified rigidity ratio is set for an attachment portion of the battery unit to the floor frame, and the attaching bracket is attached to the lower face of the floor frame via an intermediate part such that the above-described rigidity ratio is 0.1 or greater.
Claims19
An electric motor vehicle, comprising:
- a floor panel constituting a lower face of the vehicle;
- a pair of floor frames provided to be spaced apart from each other at both sides of the vehicle and extending in a longitudinal direction, the pair of floor frames being attached to the lower face of the floor panel so as to respectively form a hollow prism-shaped closed-cross section structure together with the floor panel;
- and
- a battery unit attached to respective lower faces of the pair of floor frames at both sides thereof and arranged below the floor panel,
- wherein said battery unit comprises plural battery modules, a battery case storing the battery modules therein, and an attaching bracket protruding from the battery case in a vehicle width direction and positioned just below the lower face of one of said pair of floor frames with a distance therebetween,
- a rigidity ratio (Rb/Rf) which is a ratio of rigidity (Rb), in the vehicle width direction, of a section of an attachment portion of said battery unit to said one of said pair of floor frames which is positioned below said lower face of the one of said pair of floor frames to rigidity (Rf) of another section of the attachment portion of said battery unit to said one of said pair of floor frames which is positioned above said lower face of the one of said pair of floor frames, is based on a predetermined specific value relating to rigidity, and
- said attaching bracket is attached to said lower face of the one of said pair of floor frames via an intermediate part such that said rigidity ratio (Rb/Rf) is at least 0.1.
An electric motor vehicle, comprising:
- a floor panel constituting a lower face of the vehicle;
- a pair of floor frames provided to be spaced apart from each other at both sides of the vehicle and extending in a longitudinal direction, the pair of floor frames being attached to the lower face of the floor panel so as to respectively form a hollow prism-shaped closed-cross section structure together with the floor panel;
- and
- a battery unit attached to respective lower faces of the pair of floor frames at both sides thereof and arranged below the floor panel,
- wherein said battery unit comprises plural battery modules, a battery case storing the battery modules therein, and an attaching bracket protruding from the battery case in a vehicle width direction and positioned just below the lower face of one of said pair of floor frames with a distance therebetween,
- a bracket attachment portion where said attaching bracket is attached is provided at the lower face of said one of said pair of floor frames,
- said battery unit is attached to said one of said pair of floor frames by connection of said bracket attachment portion and said attaching bracket, and
- said attaching bracket is attached to said lower face of the one of said pair of floor frames via a spacer such that a rigidity ratio (Rb/Rf) which is a ratio of rigidity (Rb), in a vehicle width direction, of said bracket attachment portion itself to rigidity (Rf), in a vehicle width direction, of said attaching bracket including said spacer is at least 0.1.
Dependencies are inferred from the claim text.