Battery Electrode Feeding and Kneading for Uniform Mixing Ratios
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Solution Overview
Problem
Existing battery manufacturing methods face challenges in achieving stable product quality due to inconsistencies in the mixing ratio and uniformity of electrode materials, particularly with materials like binders and thickening agents that are difficult to disperse uniformly.
Innovation Solution
A method involving weighing electrode materials to precise predetermined weights, feeding them into a quantitative feeder machine, and then kneading them with a twin-screw kneader to ensure a consistent mixture ratio and uniform dispersion, reducing the length of the kneading apparatus to manage high shearing forces and facilitate uniform mixing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional feeding methods are used to feed electrode materials, then the feeding process is simple, but the mixing ratio and uniformity of electrode materials cannot be stabilized
Solution Approach 1:
The feeding system is divided into multiple independent quantitative feeders, each responsible for feeding a specific electrode material. This segmentation allows precise control of each material's feeding amount independently, ensuring accurate mixing ratios while maintaining manageable system complexity through modular design.
Solution Approach 2:
A weighing device is integrated into the feeding system to measure the actual feeding amount of electrode materials in real-time. This feedback mechanism enables continuous monitoring and adjustment of feeding quantities, stabilizing the mixing ratio and uniformity of electrode materials throughout the manufacturing process.
2Manufacturing precision
If a long kneading apparatus is used to achieve uniform mixing, then material uniformity is improved, but the facility size and load on kneading apparatus increase
Solution Approach 1:
Electrode materials are pre-weighed and pre-mixed in predetermined ratios before entering the kneading apparatus. This preliminary preparation ensures that materials are already uniformly distributed in correct proportions, reducing the kneading distance and time required to achieve final material uniformity, thereby shortening the kneading apparatus length and reducing its load.
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
This approach stabilizes the product quality of batteries by ensuring precise adjustment of the mixture ratio and uniform dispersion of materials, reducing the load on the kneading apparatus and minimizing facility size while maintaining high material uniformity.
Implementation Method 1
kneading the plurality of electrode materials with the multi-screw kneader
Data Source
AI summary
A method of manufacturing a battery includes the steps of: weighing a plurality of electrode materials to respective predetermined weights and placing the plurality of electrode materials into a container; placing the plurality of electrode materials having been placed in the container into a feeder machine; feeding the plurality of electrode materials from the feeder machine to a twin-screw kneader; and kneading the plurality of electrode materials with the twin-screw kneader.