Patterned Powder Feeding Trough for Uniform Dry Electrode Supply
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Solution Overview
Problem
Existing dry powder feeding apparatuses struggle to uniformly disperse fibrous dry powders, including active materials, conductive materials, and binders, which leads to supply deviations when feeding these powders to calendering rolls for dry electrode manufacturing.
Innovation Solution
A dry powder feeding apparatus is designed with a feeder that discharges fibrous dry powder and a trough with bottom pattern portions that protrude at an obtuse angle, along with a chute containing internal pattern portions, to enhance the dispersion and uniform distribution of the dry powder along the trough and to the calendering roll.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional feeder discharges fibrous dry powder directly, then the powder is supplied to the calendering roll, but the powder distribution is non-uniform and supply deviations occur
Solution Approach 1:
The trough bottom is segmented into multiple bottom pattern portions (protrusions) that divide and redirect the powder flow into multiple streams, ensuring uniform distribution across the calendering roll width and preventing localized accumulation or gaps
Solution Approach 2:
The chute with internal pattern portions acts as an intermediary component between the feeder and trough, pre-dispersing the powder into multiple streams before they enter the trough, thereby reducing clumping and improving overall distribution uniformity
2Manufacturing precision
If the dry powder is discharged without dispersion structures, then the apparatus structure is simple, but supply deviations occur and uniformity is poor
Solution Approach 1:
The bottom pattern portions are strategically positioned at specific locations on the trough bottom to address local distribution problems, creating targeted dispersion zones where powder accumulation occurs without requiring complete redesign of the entire system
Solution Approach 2:
The internal pattern portions in the chute introduce a new spatial dimension for powder dispersion by creating three-dimensional flow paths and multiple discharge directions, transforming single-stream powder flow into multi-directional distribution patterns
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 apparatus effectively minimizes supply deviations and enhances the uniformity of the dry powder distribution on the calendering roll, leading to improved manufacturing of large-area dry electrodes with consistent properties.
Implementation Method 1
The trough may further include a vibrator that vibrates the bottom surface
Data Source
AI summary
A dry powder feeding apparatus includes a feeder accommodating a fibrous dry powder, the fibrous dry powder including an active material, a conductive material, and a binder, and a trough adjacent to the feeder, the trough including a bottom and a plurality of bottom pattern portions protruding from an inner surface of the bottom, the bottom of the trough being configured to move the fibrous dry powder discharged from the feeder in a first direction.