Electrode Plate Centerline Correction for Battery Winding Alignment

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Solution Overview

Problem

Existing deviation correction methods for electrode plates in battery cell winding rely on edge position corrections, which fail to account for the effective width of the electrode plate, leading to manual adjustments and suboptimal quality due to misalignment of anode and cathode plates.

Innovation Solution

A deviation correction apparatus that detects the width of the coating layer to determine the centerline position of the electrode plate, allowing for automatic correction based on a preset standard centerline position, ensuring accurate alignment without manual intervention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If edge position deviation correction is used with a side edge as reference, then the correction process is simple, but the alignment accuracy of anode and cathode plates deteriorates

Engineering Contradiction:

Improvecorrection process complexityVSAvoidalignment accuracy

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The patent replaces the mechanical edge-position-based correction system with an optical detection system (laser sensor or vision system) that measures the centerline position directly. This substitution enables automatic, high-precision center alignment without manual intervention, resolving the contradiction between simple correction process and accurate alignment by using optical measurement instead of mechanical reference edges.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The deviation correction mechanism automatically adjusts the electrode plate position based on real-time centerline detection feedback, eliminating the need for manual adjustment of deviation correction references. The system self-corrects by comparing detected centerline position with the standard centerline position and automatically positioning the plate, thereby achieving both operational simplicity and high precision.

Inventive Principle:

Principle #25Self-service

2Manufacturing precision

If manual adjustment of deviation correction reference is performed, then alignment accuracy can be maintained, but productivity deteriorates

Engineering Contradiction:

Improvealignment accuracyVSAvoidcorrection efficiency

Core Design Contradiction:

Manufacturing precisionVSProductivity

Solution Approach 1:

The system implements automatic deviation correction by detecting the centerline position of the electrode plate and automatically adjusting its position to align with the standard centerline. This eliminates manual intervention entirely, maintaining high alignment accuracy while significantly improving productivity through continuous, uninterrupted operation.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent introduces a closed-loop feedback system where the detection apparatus continuously monitors the centerline position of the electrode plate, compares it with the standard centerline position, and feeds this information to the deviation correction mechanism. This real-time feedback enables automatic adjustment, eliminating manual operations and enhancing both precision and productivity.

Inventive Principle:

Principle #23Feedback

3Productivity

If centerline-based automatic correction is implemented, then productivity and accuracy are improved, but device complexity increases

Engineering Contradiction:

Improvecorrection efficiencyVSAvoiddetection and correction system complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent replaces complex manual measurement and adjustment procedures with an integrated optical detection and automatic correction system. Although the automated system introduces detection apparatus and control mechanisms, it eliminates the need for multiple manual operations, reference adjustments, and quality checks, ultimately simplifying the overall process while enhancing productivity and accuracy.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The deviation correction mechanism is designed to perform multiple functions: it detects centerline position, calculates deviation from the standard centerline, determines correction amount and direction, and executes positioning adjustment. This multi-functional integration reduces the need for separate devices and operations, balancing increased automation capabilities with manageable system complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20230356972A1Deviation correction apparatus and winding machine

Publication Date: 2023.11.09 CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED

AI summary

A deviation correction apparatus includes a width detecting apparatus configured to detect a width of a coating layer of an electrode plate, a processor communicatively connected with the width detecting apparatus and configured to determine a centerline position of the electrode plate based on the width of the coating layer, and a deviation correction mechanism configured to perform deviation correction for the electrode plate based on the centerline position of the electrode plate and a preset standard centerline position.