Electrode Plate Notching Alignment for Press Pressure Bias

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Solution Overview

Problem

Existing electrode plate notching processes suffer from molding errors due to biases in press pressure during the notching process, leading to inaccuracies in manufacturing lithium secondary batteries.

Innovation Solution

An electrode plate notching device with a correction unit that includes a multi-axis alignment system, comprising a correction plate, guide, and block, which adjusts the press pressure to ensure precise machining by allowing for axial linear movement, rotation, and tilting, thereby correcting for deviations in the mold alignment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If a punching machine is used for notching electrode plates, then the notching process can be performed, but molding errors occur due to press pressure bias

Engineering Contradiction:
Improvenotching precisionVSAvoidmolding accuracy
Core Design Contradiction:
Manufacturing precisionVSReliability

Solution Approach 1:

The correction unit dynamically adjusts the press pressure distribution by modifying the positional parameters of the punch relative to the mold. The correction block moves along the guide to change the contact position, thereby compensating for pressure biases and achieving uniform notching across different electrode plate positions.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The system performs self-correction of press pressure bias through the correction unit that automatically adjusts the punch position based on the actual pressure distribution during notching. The correction block and guide mechanism enable the system to self-regulate and compensate for molding errors without external intervention.

Inventive Principle:
Principle #25Self-service

2Productivity

If press pressure is applied during notching, then the electrode plate can be processed, but pressure bias causes molding errors

Engineering Contradiction:
Improvenotching efficiencyVSAvoidnotching accuracy
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

The correction unit introduces dynamic adjustment capability to the otherwise static punching system. The correction block can move along the guide during the notching process, enabling real-time compensation for pressure bias while maintaining high productivity. This dynamic adjustment ensures that the punch remains properly aligned with the mold despite variations in press pressure.

Inventive Principle:
Principle #15Dynamics

3Reliability

If the mold alignment is not corrected, then the notching process is simple, but molding errors occur

Engineering Contradiction:
Improvemolding accuracyVSAvoidalignment system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The alignment correction function is segmented into independent components: the correction block, the guide, and the correction unit. This segmentation allows each component to perform a specific function (movement, guidance, correction) while maintaining overall system simplicity. The modular design enables easy adjustment without complicating the entire punching system.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS20250385291A1Electrode plate notching device
Publication Date: 2025.12.18 SAMSUNG SDI CO LTD
  • US20250385291A1 patent drawing
  • US20250385291A1 patent drawing
  • US20250385291A1 patent drawing

AI summary

Embodiments of the present disclosure relate to an electrode plate notching device capable of automatically correcting a bias of a press pressure transmitted to a mold during a notching process of an electrode plate, thereby preventing or reducing molding errors. An electrode plate notching device includes a lower press, a first mold seated on the lower press and including a punch hole, a second mold movable up and down above the first mold and including a punch, an upper press arranged above the second mold and movable vertically, and a correction unit connecting the upper press to the second mold and capable of multi-axis alignment.