Battery Electrode Roll Map for Precise Defect History Tracking

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Solution Overview

Problem

Existing methods struggle to accurately mark and track defects on electrodes during secondary battery manufacturing, leading to difficulties in identifying the cause of defects and failures in finished battery products, and lack of reliable information on manufacturing processes.

Innovation Solution

A system and method for generating a roll map using an inspection and measurement device to track and measure electrode data, including coordinate values and defect information, which is displayed on a simulated electrode surface, enabling precise tracking and analysis of manufacturing processes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If manual marking or tagging methods are used to identify defects on electrodes, then defect identification is possible, but the exact location of defects becomes difficult to determine and track

Engineering Contradiction:
Improvedefect location identificationVSAvoiddefect tracking
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The patent creates a virtual copy of the electrode in the form of a roll map that digitally represents the physical electrode's defect locations. Instead of relying on physical markings that are difficult to track, the system generates a digital replica showing defect positions with precise coordinate information, enabling easy tracking and analysis without compromising the physical electrode.

Inventive Principle:
Principle #26Copying

Solution Approach 2:

The patent transitions from two-dimensional physical markings on the electrode surface to a three-dimensional digital representation in the roll map system. The roll map provides depth information through layered visualization of defects at different processing stages, adding a temporal and spatial dimension that enables precise tracking of defect locations throughout the manufacturing process.

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

2Reliability

If ink markings are placed on the outer surface of finished batteries to signify defects, then defect identification is possible, but reliable history information about defects cannot be determined

Engineering Contradiction:
Improvedefect history informationVSAvoidmanufacturing process information
Core Design Contradiction:
ReliabilityVSLoss of information

Solution Approach 1:

The patent performs preliminary recording of defect information and manufacturing process data during the electrode manufacturing process itself, before the battery is finished. The roll map system captures defect locations, types, and associated manufacturing parameters at each stage, preserving this information in a digital format that can be reliably traced back through the entire manufacturing history.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent introduces the roll map as an intermediary system that bridges the physical electrode and the digital record-keeping system. The roll map serves as a mediator that captures, stores, and transmits defect information and manufacturing process data between different stages of production, ensuring reliable information preservation without relying on external markings on the finished product.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Manufacturing precision

If comprehensive data including coordinate values and manufacturing parameters are tracked, then quality control is improved, but system complexity increases

Engineering Contradiction:
Improvequality controlVSAvoiddata tracking system
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent creates a universal roll map system that serves multiple functions simultaneously: it tracks defect locations, records manufacturing process parameters, visualizes electrode information, and enables quality analysis. This multi-functional approach consolidates what would otherwise require multiple separate systems into a single integrated platform, improving quality control without proportionally increasing system complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges various data types including coordinate values, defect information, manufacturing parameters, and process history into a single integrated roll map representation. By combining these previously separate data streams into one unified system, the patent achieves comprehensive quality control while avoiding the complexity of managing multiple independent tracking systems.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS12586829B2Systems and methods for generating roll map and manufacturing battery using roll map
Publication Date: 2026.03.24 LG ENERGY SOLUTION LTD
  • US12586829B2 patent drawing
  • US12586829B2 patent drawing
  • US12586829B2 patent drawing

AI summary

Methods and systems for executing tracking and monitoring manufacturing data of a battery are disclosed. One method includes: receiving, by a server system, sensing data of the battery from a sensing system; generating, by the server system, mapping data based on the sensing data; generating, by the server system, identification data of the battery based on the sensing data; generating, by the server system, monitoring data of the battery based on the sensing data, the identification data, and the mapping data; and generating, by the server system, display data for displaying a simulated electrode of the battery on a graphical user interface based on the monitoring data of the battery.