Vehicle Battery Mount Reinforce Structure

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Solution Overview

Problem

Vibration of vehicle bodies during operation transfers noise to battery packs, especially when these packs are mounted internally, causing discomfort to occupants.

Innovation Solution

A structure that includes a recessed portion in the vehicle body to house the battery pack, a fastening member to secure it, and a reinforce that surrounds the pack to absorb vibrations, with optional elastic members and a positioning mechanism to enhance assembly accuracy and strength.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the battery pack is fixed to the vehicle body using fastening members, then the battery pack is securely mounted, but vibration is transferred from the vehicle body to the battery pack causing noise

Engineering Contradiction:
Improvemounting strengthVSAvoidvibration and noise
Core Design Contradiction:
StrengthVSObject-affected harmful factors

Solution Approach 1:

A cushioning member (elastic element) is introduced as an intermediary between the battery pack and the vehicle body structure. This elastic element absorbs vibrations while maintaining the secure mounting function, thus resolving the contradiction between mounting strength and vibration isolation

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The recessed portion in the vehicle body floor panel is designed beforehand to house the battery pack, and the elastic element is pre-positioned to provide cushioning. This prior cushioning structure prevents vibration transfer before it reaches the battery pack

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

2Volume of moving object

If the battery pack is disposed in the interior of the car to save space, then space utilization is improved, but noise from battery vibration reaches occupants more directly

Engineering Contradiction:
Improvespace utilizationVSAvoidnoise to occupants
Core Design Contradiction:
Volume of moving objectVSObject-affected harmful factors

Solution Approach 1:

The elastic element serves as a mediator that isolates the battery pack from the vehicle body even when disposed in the interior. This allows space-efficient interior placement while preventing direct vibration and noise transmission to occupants

Inventive Principle:
Principle #24Intermediary (Mediator)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This configuration reduces noise and enhances the structural integrity of the battery pack mounting system by minimizing vibration transfer and providing improved strength against impacts.

Implementation Method 1

An elastic member elastically deformable can be disposed between the reinforce and the electric storage apparatus. The elastic member can be used to press the electric storage apparatus against the recessed portion.

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Data Source

PatentUS10065490B2Structure for mounting electric storage apparatus
Publication Date: 2018.09.04 TOYOTA JIDOSHA KK
  • US10065490B2 patent drawing
  • US10065490B2 patent drawing
  • US10065490B2 patent drawing

AI summary

A structure for mounting an electric storage apparatus includes the electric storage apparatus outputting an energy for use in running of a vehicle, a vehicle body including a recessed portion housing the electric storage apparatus, a fastening member fixing the electric storage apparatus to the recessed portion, and a reinforce. The reinforce is disposed at a position surrounding the electric storage apparatus together with the recessed portion and is fixed to the vehicle body. The reinforce presses the electric storage apparatus against the recessed portion.