Rear Body Cooling Module Layout for Space and Rigidity

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Solution Overview

Problem

Hydrogen electric vehicles face challenges in installing additional cooling modules due to limited space at the vehicle body front, necessitating a solution that secures mounting rigidity and space for cooling modules on the vehicle body rear portion.

Innovation Solution

A rear vehicle body structure with cooling modules mounted on both sides along the vehicle width direction, incorporating a rear floor structure, cooling module mounting units, and reinforcing members to enhance connectivity and rigidity, allowing for improved cooling performance and structural support.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If cooling modules are mounted at the front of the vehicle body, then cooling function is provided, but space for additional cooling modules is limited

Engineering Contradiction:

Improvecooling capacityVSAvoidmounting space

Core Design Contradiction:

Adaptability or versatilityVSArea of stationary object

Solution Approach 1:

The patent relocates cooling modules from the front of the vehicle body to the rear side members, utilizing the underfloor space in the rear portion. This dimensional relocation allows additional cooling modules to be installed without occupying front mounting space, thereby increasing overall cooling capacity while maintaining spatial efficiency.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Area of stationary object

If cooling modules are mounted on the rear portion, then mounting space is increased, but mounting rigidity and body rigidity may be compromised

Engineering Contradiction:

Improvemounting spaceVSAvoidmounting rigidity

Core Design Contradiction:

Area of stationary objectVSStrength

Solution Approach 1:

The rear side members are constructed as composite structures integrating cooling module mounting units directly into the body structure. The mounting brackets are formed as integral parts of the rear side members, creating a unified composite structure that provides both mounting space and structural rigidity simultaneously.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The cooling module mounting function is merged with the rear side member structure itself. The mounting brackets are integrated into the rear side members, combining the structural support function with the cooling module mounting function, thereby eliminating the need for separate mounting structures that would compromise rigidity.

Inventive Principle:

Principle #5Merging (Combining)

3Adaptability or versatility

If multiple cooling modules are installed, then cooling performance is improved, but structural complexity increases

Engineering Contradiction:

Improvecooling performanceVSAvoidstructural complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The rear side members are designed with universal mounting capabilities that can accommodate multiple cooling modules of different sizes and configurations. The integrated mounting brackets provide standardized interfaces that simplify the installation of additional cooling modules without requiring complex custom mounting structures for each module.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS12403961B2Rear vehicle body structure

Publication Date: 2025.09.02 HYUNDAI MOTOR CO LTD

AI summary

An embodiment rear vehicle body structure includes a rear floor structure coupled to rear side members respectively arranged on both sides of a vehicle body rear portion along a vehicle width direction and a cooling module mounting unit including cooling modules respectively connected to both sides of the vehicle body rear portion, wherein the cooling modules are respectively arranged on both sides of the rear floor structure along the vehicle width direction.