Battery Cell Electrolyte Injection Hole Layout for Fixed Alignment
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Solution Overview
Problem
The processing and production efficiency of batteries is hindered by the need to align and rotate battery cells during electrolyte injection, leading to potential contamination and reduced yield due to uncertain rotation angles.
Innovation Solution
The battery cell design includes an electrolyte injection hole positioned at the center of its orthographic projection, aligning with the central axis of the electrolyte injection hole, allowing for fixed positioning even with rotation, thus improving injection efficiency and reducing contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the electrolyte injection hole is positioned off-center on the battery cell, then the injection process requires alignment and rotation of the battery cell, but this leads to uncertain rotation angles, potential contamination, and reduced processing yield
Solution Approach 1:
The patent applies asymmetry by positioning the electrolyte injection hole at the center of the battery cell's top surface, creating a symmetric reference point that eliminates the need for rotation and alignment during injection. This central positioning transforms the injection process from a complex alignment task to a simple vertical insertion operation.
Solution Approach 2:
The patent creates equipotentiality by ensuring the electrolyte injection hole is positioned at the geometric center of the battery cell top surface, making all directional orientations equivalent. This allows the injection needle to approach from any radial direction and still achieve proper alignment, eliminating the need for precise angular positioning or rotation of the battery cell.
2Reliability
If the battery cell requires rotation for electrolyte injection, then injection can be performed, but the uncertain rotation angle increases the risk of electrolyte contamination and reduces processing yield
Solution Approach 1:
The patent uses symmetric positioning of the electrolyte injection hole at the center of the battery cell top surface, which creates a reference point that is invariant under rotation. This eliminates the harmful effect of uncertain rotation angles by making the injection point independent of the cell's angular orientation.
3Productivity
If the electrolyte injection hole is positioned at the center of the battery cell top surface, then alignment is simplified and processing efficiency is improved, but the structure requires precise manufacturing to maintain centering
Solution Approach 1:
The patent applies universality by designing the electrolyte injection hole to serve multiple functions: it is both the injection access point and the angular reference for the entire battery cell. This multi-functionality simplifies the manufacturing process because the same central feature used for injection alignment can also serve as the reference for other components, reducing the need for separate high-precision positioning operations.
Data Source
AI summary
A battery cell, a battery, and an electric device. The battery cell is provided with an electrolyte injection hole, where a center of an orthographic projection of the battery cell along a first direction overlaps with a center of an orthographic projection of the electrolyte injection hole along the first direction, and the first direction is a direction of a central axis of the electrolyte injection hole.