Electrode Winding Pin Layout for Precise Battery Assembly Release
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Solution Overview
Problem
The yield of electrode assemblies in battery manufacturing is low due to inefficiencies in the winding process, leading to reduced production efficiency and increased manufacturing costs.
Innovation Solution
A winding device with a pair of outer pins, adjusting members, a pair of inner pins, and a first elastic returning member, which allows for independent movement of the inner pins and adjusting members driven by separate driving members, enabling precise control of the winding process to improve yield and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the inner pins and adjusting members are driven by the same driving mechanism, then the device structure is simpler, but the winding precision and yield of electrode assemblies deteriorate
Solution Approach 1:
The patent divides the driving mechanism into two independent driving members: a first driving member that drives the inner pins, and a second driving member that drives the adjusting members. This segmentation allows independent control of each component, enabling precise adjustment of the winding circumference and positioning of the inner pins separately, thereby improving winding precision and electrode assembly yield without excessive structural complexity.
2Device complexity
If the distance between outer pins is fixed, then the device structure is simpler, but the adaptability to different electrode assembly specifications deteriorates
Solution Approach 1:
The patent introduces adjusting members that can move along the outer pins to dynamically change the distance between them. The second driving member controls the adjusting members to reciprocate, enabling the outer pins to adapt to different electrode assembly circumferences. This dynamic adjustment capability improves adaptability to various specifications while maintaining reasonable device structure through the use of sliding or telescopic mechanisms.
3Reliability
If the inner pins remain in contact with the electrode assembly after release, then the clamping force is maintained, but friction increases causing device separation difficulties and material waste
Solution Approach 1:
The patent implements a periodic action sequence where the first driving member first drives the inner pins to move away from each other to release the electrode assembly, and then the second driving member drives the adjusting members to retract the outer pins. This sequential periodic action ensures complete separation between the pins and electrode assembly, minimizing friction and preventing material waste while maintaining adequate clamping force during the winding process.
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 improved winding device increases the yield of electrode assemblies, enhances production efficiency, reduces material waste, and lowers manufacturing costs by minimizing friction and ensuring proper separation of the winding device from the electrode assembly.
Implementation Method 1
a first elastic returning member, where the first elastic returning member is configured to apply an elastic force in the first direction to at least one inner pin
Data Source
AI summary
A winding device includes a pair of outer pins oppositely arranged in a first direction with a periphery for an electrode assembly to wind around, adjusting members configured to reciprocate in a second direction perpendicular to the first direction to drive the pair of outer pins to move away from or close to each other to increase or reduce a distance between the pair of outer pins, a pair of inner pins arranged oppositely in the first direction between the pair of outer pins and configured to move independent of the adjusting members to clamp or release the electrode assembly, and an elastic returning member configured to apply an elastic force in the first direction to at least one of the pair of inner pins such that the pair of inner pins have a tendency to be close to each other.