Dual Pressure Roll Electrode Pressing for Wrinkle Control
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Solution Overview
Problem
Existing electrode manufacturing processes fail to effectively mitigate wrinkles and prevent folds on the non-coating part of electrodes, which can lead to inadequate stretching and deepening of wrinkles or excessive stretching and swelling.
Innovation Solution
An electrode manufacturing device employing a first pressure roll and a second pressure roll with a radius difference that matches or is within the step difference between the coating and non-coating parts, ensuring uniform pressure application to prevent wrinkles and folds, with the rolls made from materials like metal, plastic, rubber, or silicon.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If uniform pressure is applied to both coating and non-coating parts, then wrinkles on non-coating part are mitigated, but excessive stretching and swelling occur
Solution Approach 1:
The patent applies different pressure magnitudes to different regions of the electrode by using a first pressure roll for the non-coating part and a second pressure roll for the coating part. The pressure applied to the non-coating part is greater than the pressure applied to the coating part, allowing localized pressure optimization that mitigates wrinkles without causing overall electrode swelling.
2Manufacturing precision
If high pressure is applied to non-coating part to reduce wrinkles, then wrinkle depth decreases, but folds are generated on the non-coating part
Solution Approach 1:
The patent optimizes the pressure parameter by controlling the radius difference between the first and second pressure rolls to be equal to or smaller than the step difference between the coating and non-coating parts. This parameter optimization enables effective wrinkle reduction while preventing fold generation through controlled pressure distribution.
3Ease of manufacture
If the radius difference between pressure rolls is large, then pressure application is simplified, but wrinkles deepen and folds form
Solution Approach 1:
The patent establishes a specific parameter range for the radius difference between pressure rolls, where the difference is equal to or smaller than the step difference between coating and non-coating parts. This parameter control achieves optimal balance between ease of manufacture and manufacturing precision, preventing wrinkle deepening and fold formation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device effectively mitigates wrinkles and prevents folds on the non-coating part by applying appropriate pressure, optimizing the stretching and reducing camber and detachment values, thereby improving the electrode's structural integrity.
Implementation Method 1
a first pressure roll that applies pressure to the non-coating part
Implementation Method 2
a second pressure roll that applies pressure to the coating part
Data Source
AI summary
An electrode manufacturing device that applies pressure to an electrode containing a coating part and a non-coating part is provided. The electrode manufacturing device includes: a first pressure roll that applies pressure to the non-coating part; a second pressure roll that applies pressure to the coating part; and a connection part that penetrates through the center of the first pressure roll and the center of the second pressure roll, respectively, wherein a difference between a radius of the first pressure roll and a radius of the second pressure roll is equal to or smaller than a step difference between the coating part and the non-coating part.