Vehicle Battery Fixing Structure Synchronizing Vibration

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Solution Overview

Problem

Existing vehicle battery fixing structures allow engine vibrations to reach batteries in different ways, causing significant shaking, and in collision scenarios, there is a risk of short-circuiting between batteries due to terminal misalignment.

Innovation Solution

A vehicle battery fixing structure where the insert part between the battery pan and the first battery serves as a vibration input point for the second battery, ensuring both batteries receive vibrations similarly, and the battery bracket covers the second battery to prevent terminal contact during collisions, with terminals oriented to minimize short-circuit risks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If two batteries are fixed side by side with separate vibration input points, then each battery can be independently secured, but the batteries experience different vibration patterns causing significant shaking

Engineering Contradiction:
Improvebattery stabilityVSAvoidfixing structure complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The patent merges the vibration input mechanism by using a common engine vibration source to simultaneously excite both batteries through their respective mounting points. The engine acts as a unified vibration source that transmits vibrations to both batteries, ensuring they experience synchronized vibration patterns rather than independent ones.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The fixing structure is segmented into distinct mounting points (first battery fixing part and second battery fixing part) that are strategically positioned to receive vibrations from the engine. This segmentation allows each battery to be independently secured while maintaining synchronized vibration input through the common engine source.

Inventive Principle:
Principle #1Segmentation

2Volume of moving object

If battery terminals are positioned close together for compact design, then space is saved, but collision risk increases causing potential short-circuits

Engineering Contradiction:
Improvebattery arrangement spaceVSAvoidelectrical safety
Core Design Contradiction:
Volume of moving objectVSReliability

Solution Approach 1:

The patent applies local quality by differentiating the positioning of positive and negative terminals between the two batteries. The first battery's positive terminal and the second battery's negative terminal are positioned at opposite ends of the battery assembly, creating localized separation of oppositely charged terminals while maintaining overall compact arrangement.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The terminal arrangement exhibits asymmetry where the positive terminal of the first battery and the negative terminal of the second battery are positioned at opposite ends, rather than symmetrically placing all positive terminals together and all negative terminals together. This asymmetric arrangement prevents short-circuit risk during collisions.

Inventive Principle:
Principle #4Asymmetry

Data Source

PatentEP2781412B1Vehicle battery fixing structure
Publication Date: 2016.01.13 MITSUBISHI MOTORS CORP
  • EP2781412B1 patent drawingFigure 1
  • EP2781412B1 patent drawingFigure 2
  • EP2781412B1 patent drawingFigure 3

AI summary

The present invention aims at dampening shaking of two batteries in a vehicle battery fixing structure by means of which the two batteries are fixed side by side. A vehicle battery fixing structure of the present invention is outfitted with a battery pan (4) fixed to a side member which makes up a vehicle body, a main battery (2) fixed on the battery pan (4), a sub-battery (3) that is on the battery pan (4) and that is placed side by side on a front side of the vehicle, and a battery bracket (6) to be placed on a back surface of the sub-battery (3) so as to cover an entire back surface of the sub-battery (3). The battery racket (6) has a fixing part (622) provided between a top surface of the battery pan (4) and an bottom surface of the main battery (2).