Battery Pack Guide Member Layout for Stronger Compact Wiring

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Solution Overview

Problem

Existing guide members face a trade-off between reducing size and enhancing strength, as increasing the width of the partition wall for locking mechanisms compromises the guide member's size, while decreasing its width compromises strength.

Innovation Solution

The guide member features a partition wall with locking mechanisms displaced from each other in the predetermined direction, incorporating deflectable locking parts and bundled wiring, positioned between battery modules to enhance strength and reduce size.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the width of the partition wall is increased to maintain strength around the locking mechanism, then the strength is improved, but the guide member size increases

Engineering Contradiction:
Improvestrength of partition wallVSAvoidguide member size
Core Design Contradiction:
StrengthVSVolume of moving object

Solution Approach 1:

The locking mechanisms are arranged in the width direction of the partition wall rather than being aligned in the longitudinal direction. This dimensional repositioning allows the locking mechanisms to be distributed across the width of the partition wall, eliminating the need to increase the longitudinal width of the partition wall while maintaining sufficient strength around each locking mechanism.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Volume of moving object

If the width of the partition wall is decreased to reduce guide member size, then the size is reduced, but the strength around the locking mechanism decreases

Engineering Contradiction:
Improveguide member sizeVSAvoidstrength of partition wall
Core Design Contradiction:
Volume of moving objectVSStrength

Solution Approach 1:

By relocating the locking mechanisms to be arranged in the width direction of the partition wall, the partition wall can be made narrower in the longitudinal direction without compromising strength. The width direction arrangement distributes the locking mechanisms across the available width, maintaining structural integrity while reducing overall guide member size.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Device complexity

If the locking mechanisms are aligned in the predetermined direction, then the guide member structure is simplified, but the partition wall width must be increased to maintain strength

Engineering Contradiction:
Improveguide member structureVSAvoidguide member size
Core Design Contradiction:
Device complexityVSVolume of moving object

Solution Approach 1:

The locking mechanisms are arranged in the width direction of the partition wall instead of being aligned in the longitudinal direction. This arrangement maintains relative simplicity in the guide member structure while avoiding the need to increase the longitudinal width of the partition wall, thus reducing overall guide member size.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

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 design achieves both a reduction in size and an enhancement of strength, allowing for efficient routing of wiring members and improved durability.

Implementation Method 1

the locking part deflectable toward an outside of each guide groove

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentEP4693669A1Guide member and battery pack
Publication Date: 2026.02.11 AESC JAPAN LTD
  • EP4693669A1 patent drawingFigure 1
  • EP4693669A1 patent drawingFigure 2
  • EP4693669A1 patent drawingFigure 3

AI summary

A first guide member (300A) includes a first partition wall (308A) separating a first right guide groove (310A) and a first left guide groove (320A) that extend in the X direction, a pair of first locking parts (312A) to lock a first low-voltage wiring member (510A) inserted into the first right guide groove (310A) with at least part of the pair provided at the first partition wall (308A), and a pair of second locking parts (322A) to lock a first lower high-voltage wiring member (520A) inserted into the first left guide groove (320A) with at least part of the pair provided at the first partition wall (308A). The pair of first locking parts (312A) of the first right guide groove (310A) and the pair of second locking parts (322A) of the first left guide groove (320A) are displaced from each other in the X direction.