Modular EV Chassis Platform With Flat Battery Packaging

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Solution Overview

Problem

Existing vehicle chassis designs have complex shapes, large footprints, and high weights, limiting design flexibility and accommodating space for electric-vehicle batteries and other components.

Innovation Solution

A vehicle chassis platform with a flat upper surface and mechanical connectors that couple vehicle corner modules, allowing for efficient placement of batteries and suspension, drivetrain, and steering units without occupying space beneath or above the chassis.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If traditional vehicle chassis designs are used with complex shapes and multiple non-continuous portions, then structural strength and component accommodation are achieved, but design flexibility is limited and weight increases

Engineering Contradiction:

Improvedesign flexibilityVSAvoidchassis complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The chassis is divided into a modular platform structure with separate functional modules (battery module, suspension module, steering module, drivetrain module) that can be independently designed, assembled, and positioned. This segmentation allows each module to be optimized separately while maintaining overall chassis flexibility and reducing total complexity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The chassis platform is designed as a universal base structure that can accommodate multiple different battery configurations, suspension types, and powertrain arrangements. The standardized mounting interfaces and modular architecture enable the same platform to support various vehicle configurations without requiring complete redesign.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Quantity of substance

If traditional vehicle chassis designs are used with components positioned beneath the bottom surface, then component accommodation is achieved, but available space for batteries is reduced

Engineering Contradiction:

Improvebattery capacityVSAvoidchassis footprint

Core Design Contradiction:

Quantity of substanceVSVolume of moving object

Solution Approach 1:

The chassis design utilizes the vertical dimension by positioning the battery module within the chassis platform structure itself rather than only beneath the bottom surface. This three-dimensional space utilization allows maximum battery capacity while maintaining a compact overall footprint and avoiding interference with suspension and drivetrain components.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Ease of manufacture

If traditional vehicle chassis designs are used with non-continuous portions, then component placement flexibility is achieved, but manufacturing complexity increases

Engineering Contradiction:

Improvemanufacturing simplicityVSAvoidcomponent placement flexibility

Core Design Contradiction:

Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS12565266B2Electric vehicle chassis platform

Publication Date: 2026.03.03 REE AUTOMOTIVE LTD

AI summary

A vehicle chassis platform including: a frame having a front frame end, a rear frame end, a longitudinal frame axis, an upper frame surface, a bottom frame surface, a first longitudinal lateral frame surface and a second longitudinal lateral frame surface, wherein the upper frame surface is substantially flat; and two or more mechanical connectors each on one of the first and second longitudinal lateral surfaces, each of mechanical connectors to couple a vehicle corner module (VCM) to the frame and to transfer mechanical loads between the frame and the VCM when the VCM is on the frame.