Battery Cell Virtual ID Tracking for Accurate Process Data Matching

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Solution Overview

Problem

Existing battery manufacturing processes face challenges in ensuring accurate matching between process data and batteries, which affects the reliability of quality analysis and prediction of battery quality degradation.

Innovation Solution

A battery manufacturing method and system that generates a virtual identifier (ID) for each battery cell, shifts this ID through process stages, associates it with process data, and matches it with a cell ID to ensure accurate data transmission to an upper control system.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If process data is collected and reported to an upper controller in a conventional battery manufacturing process, then productivity is improved through automated data collection, but matching accuracy between process data and battery cells deteriorates due to lack of reliable identification methods

Engineering Contradiction:

Improveautomated data collection efficiencyVSAvoidmatching accuracy between process data and battery cell

Core Design Contradiction:

ProductivityVSMeasurement precision

Solution Approach 1:

The patent creates a virtual ID that serves as a digital copy or representation of the battery cell's physical identity. This virtual ID is generated from the cell ID and used throughout the manufacturing process to track and associate process data with the correct battery cell, ensuring accurate matching without requiring direct physical identification at each stage

Inventive Principle:

Principle #26Copying

Solution Approach 2:

The virtual ID acts as an intermediary between the physical battery cell (identified by cell ID) and the process data system. By using this intermediate identifier, the system can accurately link manufacturing process data to specific battery cells while maintaining automated data collection efficiency

Inventive Principle:

Principle #24Intermediary (Mediator)

2Measurement precision

If a virtual ID system is implemented to improve matching accuracy, then measurement precision is improved, but device complexity increases due to additional ID management components

Engineering Contradiction:

Improvematching accuracy between process data and battery cellVSAvoidsystem complexity for ID generation and management

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The virtual ID is generated by applying a simple transformation (division by 1000) to the cell ID parameter. This parameter change approach creates a distinct virtual identifier from the existing cell ID without requiring complex generation algorithms or additional hardware components

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The system temporarily uses the virtual ID during the manufacturing process for accurate data association, then recovers the original cell ID for final matching with the battery cell. This temporary use of an intermediate identifier simplifies the overall system by only requiring short-term virtual ID management

Inventive Principle:

Principle #34Discarding and recovering

Data Source

PatentUS12517485B2Battery manufacturing method and battery manufacturing system

Publication Date: 2026.01.06 LG ENERGY SOLUTION LTD

AI summary

A battery manufacturing method according to the present disclosure includes generating a virtual identifier (ID) corresponding to a battery cell, shifting the virtual ID according to a progression of processes included in a process line for the battery cell, storing the shifted virtual ID and associating the shifted virtual ID with process data generated for the battery cell, extracting a cell ID for the battery cell, and matching the process data associated with the shifted virtual ID with the cell ID, and transmitting the process data to an upper control system.