Segmented Battery Housing for Targeted Module Access

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Solution Overview

Problem

High-voltage battery housings in motor vehicles are difficult to access for damage assessment and repair, leading to high material costs and complete battery removal for minor damage.

Innovation Solution

A segmented battery housing design with removable, non-destructively fastened base segments allows for targeted access and replacement of damaged components, reducing material waste and enabling modular reinforcement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the housing base is configured as a single integrated piece, then the structural integrity and strength are improved, but the ease of repair and accessibility of battery modules deteriorate

Engineering Contradiction:
Improvestructural integrity of housing baseVSAvoidaccessibility of battery modules
Core Design Contradiction:
StrengthVSEase of repair

Solution Approach 1:

The housing base is divided into multiple segments (first housing base segment, second housing base segment, third housing base segment) that can be separately removed. This allows individual access to battery modules without compromising the overall structural integrity when segments are properly fastened together, resolving the contradiction between strength and repairability.

Inventive Principle:
Principle #1Segmentation

2Ease of operation

If the housing base is completely removed for damage assessment, then full accessibility to battery modules is achieved, but the loss of time and productivity deteriorate due to complete battery removal

Engineering Contradiction:
Improveaccessibility of housing interior spaceVSAvoidtime for damage assessment and repair
Core Design Contradiction:
Ease of operationVSProductivity

Solution Approach 1:

By segmenting the housing base into removable parts, the invention enables selective access to specific battery modules or regions. Only the necessary housing base segment(s) need to be removed for damage assessment, eliminating the need to completely remove the entire housing base and significantly reducing repair time while maintaining full accessibility when needed.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The invention extracts the housing base segments from the overall structure, allowing them to be independently removed. This enables taking out only the specific portion needed for repair or inspection, rather than removing the entire housing base, thereby improving productivity while maintaining accessibility.

Inventive Principle:
Principle #2Taking out (Extraction)

3Reliability

If the entire housing base is replaced after damage, then the reliability and structural integrity are restored, but the loss of substance and material costs worsen

Engineering Contradiction:
Improvestructural integrity after damageVSAvoidmaterial waste from complete replacement
Core Design Contradiction:
ReliabilityVSLoss of substance

Solution Approach 1:

The segmented housing base design allows only the damaged segment(s) to be replaced while retaining undamaged segments. This restores structural integrity in the affected areas without requiring complete base replacement, significantly reducing material waste and costs while maintaining overall reliability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The invention enables discarding only the damaged housing base segment(s) while recovering and retaining the undamaged segments. This selective replacement approach reduces material loss and costs compared to complete base replacement, while still restoring the necessary structural integrity and reliability.

Inventive Principle:
Principle #34Discarding and recovering

Data Source

PatentUS11539097B2Battery housing for a high-voltage battery of a motor vehicle, high- voltage battery and motor vehicle
Publication Date: 2022.12.27 BAYERISCHE MOTOREN WERKE AG
  • US11539097B2 patent drawing
  • US11539097B2 patent drawing
  • US11539097B2 patent drawing

AI summary

A battery housing for a high-voltage battery of a motor vehicle has a housing interior for receiving a multiplicity of battery modules. The housing interior is formed by a housing upper part and a housing lower part covering the housing upper part. The housing lower part is formed as a segmented housing base with at least two separate housing base segments, of which at least one housing base segment is designed to be removable for opening the battery housing and for allowing access to a part region of the housing interior covered by this housing base segment, and to that end is secured to the housing upper part in a non-destructively removable manner.