Battery Cell Tab Visualization Features for Alignment Inspection

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing battery cell assembly methods face challenges in ensuring proper alignment and connection of tabs, which can lead to performance issues and defects in battery assemblies.

Innovation Solution

Incorporating visualization features, such as cut-out portions or mitered corners, on battery cell tabs to facilitate visual inspection and ensure proper alignment during the assembly process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If tabs are stacked and joined to electrically connect battery cells, then electrical connection between cells is improved, but alignment precision deteriorates making it difficult to ensure proper tab positioning

Engineering Contradiction:

Improveelectrical connectionVSAvoidtab alignment

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The patent applies visualization features (such as colored markings, cut-outs, or contrasting patterns) on the tabs to enable visual detection of tab positions and alignment status. These visual indicators allow operators to quickly identify misaligned tabs before joining, thereby maintaining manufacturing precision while ensuring reliable electrical connections.

Inventive Principle:

Principle #32Color changes

2Ease of manufacture

If traditional tab assembly methods are used, then manufacturing process is simple, but defect detection capability deteriorates making it hard to identify misaligned tabs

Engineering Contradiction:

Improveassembly processVSAvoidtab alignment inspection

Core Design Contradiction:

Ease of manufactureVSDifficulty of detecting and measuring

Solution Approach 1:

Visualization features with distinct visual characteristics (colors, patterns, or geometric markers) are incorporated on the tabs. These features enable easy visual inspection of tab alignment during assembly without complicating the manufacturing process. The visual indicators allow for rapid defect detection while maintaining simplicity in the overall assembly workflow.

Inventive Principle:

Principle #32Color changes

3Device complexity

If tabs without visualization features are used, then manufacturing cost is low, but alignment inspection efficiency deteriorates requiring more time for quality verification

Engineering Contradiction:

Improvetab structureVSAvoidinspection time

Core Design Contradiction:

Device complexityVSLoss of time

Solution Approach 1:

The patent incorporates visualization features (such as colored bands, geometric cut-outs, or contrasting patterns) on the tabs that enable rapid visual inspection. These features allow operators to quickly verify tab alignment and position without requiring complex inspection equipment or excessive time, thus reducing inspection time while maintaining simple tab structure.

Inventive Principle:

Principle #32Color changes

Data Source

PatentUS20250062501A1Battery cell tabs having features to facilitate alignment and attachment

Publication Date: 2025.02.20 GM GLOBAL TECHNOLOGY OPERATIONS LLC

AI summary

A battery cell includes a housing enclosing an anode and a cathode, and a first tab in electrical connection with the anode or the cathode. The first tab is made from an electrically conductive material and is configured to provide an electrical connection between the battery cell and an external component, the first tab including a visualization feature configured to visually indicate a position of the first tab when the first tab is underlying another tab.