Four-Roller Electrode Calender Layout for Parallel Double Rolling
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Solution Overview
Problem
Current rolling apparatuses for lithium battery electrode plates have low production efficiency due to the need for sequential double rolling of each plate, which complicates film width consistency and coating misalignment, and there are no specific entities involved in the title or technical field paragraph when describing the technical subject, so the technical topic words are not applicable here.
Innovation Solution
A rolling apparatus with a roller assembly of four rollers arranged in pairs along intersecting directions, allowing independent rolling paths for two electrode plates, with adjustable gaps and synchronized movement to ensure consistent thickness and reduce interference, enhancing production efficiency and flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If two pairs of paired rollers are used to roll one electrode plate twice in sequence, then the bonding between active substance and substrate is enhanced, but the production efficiency is low
Solution Approach 1:
The rolling apparatus is segmented into four independently controllable rollers arranged in a 2x2 matrix, creating two independent rolling paths. Each path can process one electrode plate simultaneously, dividing the single-plate sequential rolling into parallel multi-plate processing, thereby enhancing both bonding quality through maintained two-pass rolling and production efficiency through parallel operation
Solution Approach 2:
The patent merges two sequential rolling operations into a single apparatus by combining four rollers into one integrated system. The rollers are arranged to create two independent rolling paths that can operate simultaneously, merging the functionality of multiple rolling stations into one compact device while maintaining the two-pass rolling process for each plate
2Productivity
If four rollers are arranged side by side in pairs along intersecting directions, then simultaneous rolling of two electrode plates is enabled, but the device complexity increases
Solution Approach 1:
The four rollers are arranged asymmetrically in a 2x2 matrix configuration along two intersecting directions rather than in a simple linear or stacked arrangement. This asymmetric positioning optimizes the rolling paths for two simultaneous plates while maintaining compact dimensions, reducing the complexity compared to linear expansions of traditional rolling apparatus
Solution Approach 2:
The patent transitions from a one-dimensional linear arrangement of rollers to a two-dimensional matrix configuration. By arranging rollers along two intersecting directions (first and second directions), the apparatus creates independent rolling paths in different spatial dimensions, enabling simultaneous processing while maintaining a compact footprint that reduces overall system complexity
3Adaptability or versatility
If the roll gap width is made adjustable, then adaptability to different electrode plate thickness specifications is improved, but the device complexity increases
Solution Approach 1:
The roll gap width is made dynamically adjustable through movable rollers that can be positioned along the rolling direction. At least one roller is mounted on a movable support structure allowing continuous adjustment of the gap width to accommodate different electrode plate thickness specifications, providing adaptability while maintaining a relatively simple adjustment mechanism compared to fixed-gap systems requiring multiple interchangeable components
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 achieves higher production capacity and efficiency by allowing simultaneous rolling of two electrode plates without affecting each other, reducing space requirements and improving film width consistency, while maintaining a compact structure.
Implementation Method 1
the purpose of rolling is to enhance the bonding between an active substance applied on a substrate and the substrate and achieve a more uniform thickness, so as to increase compacted density of the electrode plates
Implementation Method 2
the purpose of rolling is to enhance the bonding between an active substance applied on a substrate and the substrate
Data Source
Figure 1
Figure 2~3
AI summary
A rolling apparatus (100) includes a roller assembly (110) and a power source. The roller assembly (110) includes four rollers (1 10a) rotatable around their respective axes, where the four rollers (110a) are arranged side by side in pairs along a first direction (X) and a second direction (Y) intersected with each other, and two rollers (110a) arranged side by side define a roll gap therebetween. The power source drives two rollers (110a) arranged diagonally to rotate in a same direction around their axes. Two roll gaps defined by one of the two rollers (110a) arranged diagonally and the two rollers (110a) arranged side by side therewith are used for rolling a first electrode plate (200) twice, and two roll gaps defined by the other one of the two rollers arranged diagonally and the two rollers (110a) arranged side by side therewith are used for rolling a second electrode plate (300) twice. In the rolling apparatus, the four rollers form strip moving routes for separately rolling the first electrode plate and the second electrode plate twice, such that each of the electrode plates can be continuously rolled twice, helping to reduce the cost of double rolling and improving the production efficiency of the rolling apparatus.