Negative Electrode Magnetic Alignment With Real-Time Field Adjustment
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Solution Overview
Problem
Existing technologies face challenges in uniformly aligning the crystal faces of carbon-based negative electrode active materials in negative electrodes, particularly due to variations in the loading amount and thickness of the negative electrode slurry, and the difficulty in controlling magnetic field conditions in real-time during manufacturing.
Innovation Solution
A magnetic alignment device that measures the loading amount of the negative electrode slurry in real-time and adjusts the separation distance between magnet parts to control the magnetic field intensity, ensuring uniform alignment of the carbon-based negative electrode active material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a magnetic field is applied to the undried negative electrode slurry to orient graphite, then the charging performance of the negative electrode is improved, but the uniformity of graphite orientation cannot be ensured due to variations in slurry loading amount and thickness
Solution Approach 1:
The patent adjusts the magnetic field strength as a variable parameter based on the slurry loading amount and thickness. By changing the magnetic field intensity dynamically, the system compensates for variations in slurry properties, ensuring consistent graphite orientation quality across different production conditions.
Solution Approach 2:
The patent implements a feedback control system that measures the actual slurry loading amount and thickness, then uses this information to adjust the magnetic field strength accordingly. This closed-loop control ensures that the magnetic field parameters are optimized for each specific production condition, maintaining uniform graphite orientation.
2Reliability
If permanent magnets are used for magnetic field application, then the orientation of graphite can be induced, but it is difficult to control the magnetic field conditions according to different negative electrode specifications
Solution Approach 1:
The patent replaces static permanent magnets with a dynamic electromagnetic field generation system. This allows the magnetic field strength to be adjusted in real-time based on different negative electrode specifications, loading amounts, and thickness requirements, providing versatile adaptability across various production scenarios.
Solution Approach 2:
The system changes the magnetic field strength parameter dynamically according to different negative electrode specifications. By adjusting the electromagnetic field intensity, the patent achieves optimal graphite orientation for various slurry loading amounts and electrode thicknesses without requiring physical replacement of magnetic components.
3Manufacturing precision
If the magnetic field intensity is increased to ensure uniform orientation, then the alignment quality improves, but the energy consumption and device complexity increase
Solution Approach 1:
Instead of using constantly high magnetic field intensity, the patent dynamically adjusts the field strength to the minimum necessary level for achieving uniform graphite orientation under each specific production condition. This optimized parameter control reduces energy consumption while maintaining alignment quality.
Solution Approach 2:
The feedback control system monitors the actual orientation quality and adjusts the magnetic field intensity accordingly, applying only the necessary field strength to achieve the desired alignment. This prevents excessive energy consumption while ensuring manufacturing precision.
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 magnetic alignment device achieves uniformly high alignment of the crystal faces of the carbon-based negative electrode active material, enhancing lithium ion mobility and reducing resistance during charging and discharging, thereby improving the charging and discharging performance of the battery.
Implementation Method 1
a magnetic alignment device that measures the loading amount of the negative electrode slurry in real-time and adjusts the separation distance between magnet parts to control the magnetic field intensity, ensuring uniform alignment of the carbon-based negative electrode active material
Data Source
AI summary
A magnetic alignment device includes a first magnet part and a second magnet part, a loading amount measuring part, and a control part. The first and second magnet parts accommodate an electrode sheet therebetween and the loading amount measuring part measures a loading amount of a negative electrode slurry disposed on the electrode sheet. The control part adjusts the separation distance of the first and second magnet parts, The magnetic alignment device measures the loading amount of the negative electrode slurry applied on the negative electrode collector in real time and controls the intensity of the magnetic field by adjusting the separation distance of the magnet part according to the measured negative electrode slurry loading amount. A method using the same is also provided.