Bus Bar Housing Hinge with Stop Feature

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Solution Overview

Problem

Traditional bus bar module accommodating part structures face difficulties in assembly with battery cell assemblies due to excessive deformation of hinges, leading to misalignment and challenges in mounting the bus bar module effectively.

Innovation Solution

The bus bar module accommodating part structure incorporates a projecting part on the first accommodating part's peripheral wall to restrict the movable range of the second accommodating part, preventing excessive deformation and ensuring proper alignment during assembly by using a hinge to connect the parts and an electric wire wiring part that acts as an abutting part to further restrict movement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If hinges are used to connect accommodating parts to allow movement and adjustment, then adaptability to battery cell assemblies with accumulated tolerance is improved, but excessive deformation of the accommodating parts occurs making assembly difficult

Engineering Contradiction:
Improveadaptability to battery cell assembly toleranceVSAvoidalignment precision of accommodating parts
Core Design Contradiction:
Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The hinge mechanism enables dynamic adjustment of the accommodating parts, allowing them to move and adapt to variations in battery cell assembly dimensions. This dynamic capability permits the bus bar module to accommodate tolerance accumulation while maintaining proper alignment through controlled movement rather than rigid fixed positioning.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The hinge mechanism changes the positional parameters of the accommodating parts relative to each other, enabling adjustment of gaps and angles to compensate for accumulated tolerance in the battery cell assembly. This parameter adjustment maintains alignment precision despite variations in the underlying battery structure.

Inventive Principle:
Principle #35Parameter changes

2Ease of operation

If accommodating parts are made movable through hinges to accommodate tolerance, then ease of assembly is improved, but excessive deformation occurs restricting proper mounting

Engineering Contradiction:
Improveease of assemblyVSAvoidassembly stability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The hinge provides controlled dynamic movement that facilitates easy assembly by allowing the accommodating parts to self-adjust during installation. Simultaneously, the hinge's mechanical structure provides inherent stability limits that prevent excessive deformation, ensuring reliable and stable final assembly.

Inventive Principle:
Principle #15Dynamics

3Adaptability or versatility

If hinges connect accommodating parts with unlimited movable range, then adaptability to different configurations is improved, but excessive deformation makes bus bar module assembly difficult

Engineering Contradiction:
Improveconfigurational adaptabilityVSAvoidalignment precision
Core Design Contradiction:
Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The hinge mechanism provides dynamic adaptability through controlled movement, allowing the accommodating parts to adjust to different configurations and tolerance variations. The mechanical hinge structure inherently limits the range of motion, preventing excessive deformation while maintaining sufficient adaptability for proper alignment and assembly.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentEP2892088B1Structure of housing section for bus bar module
Publication Date: 2019.06.12 YAZAKI CORP
  • EP2892088B1 patent drawingFigure 1
  • EP2892088B1 patent drawingFigure 2
  • EP2892088B1 patent drawingFigure 3A~3B

AI summary

A synthetic resin plate (1) includes a plurality of accommodating parts (2) which accommodate at least one of bus bars, terminals, and electric wires which are connected to the terminal, hinges (7) which make first accommodating parts and second accommodating parts of the accommodating parts (2) connected and relatively movable, and projecting parts which are provided on the top surfaces of peripheral wall parts of the first accommodating parts, and which abut against parts of the second accommodating parts to restrict the movable ranges in the movable directions of the second accommodating parts relative to the first accommodating parts.