Electrolyte Injection Jig Structure for Triple Battery Sealing
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Solution Overview
Problem
Existing electrolyte injection systems face issues with leakage due to inadequate sealing at the connection point between the electrolyte injection jig and the battery housing, leading to potential weakening of the overall seal.
Innovation Solution
An electrolyte injection jig with a battery insertion portion featuring protrusions and an insertion groove, designed to enhance sealing by increasing contact area and frictional force with the battery housing, utilizing multiple wings and protrusions for double and triple sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sealing is released at any part between the battery housing and the electrolyte injection jig, then the electrolyte flows out, but the overall seal is weakened
Solution Approach 1:
The sealing structure is divided into multiple segments: a first sealing portion that contacts the first surface of the battery housing, and a second sealing portion that contacts the second surface. This segmentation ensures that even if one sealing portion is compromised, the other maintains sealing integrity, preventing electrolyte leakage while preserving overall seal reliability.
Solution Approach 2:
The first and second sealing portions are nested within the battery insertion portion, with the first sealing portion extending in a first direction and the second sealing portion extending in a second direction perpendicular to the first. This nested configuration allows both sealing portions to work together synergistically, providing redundant sealing protection against electrolyte leakage.
2Reliability
If the connection part between the injection device and the battery is well sealed, then electrolyte leakage is prevented, but the sealing structure becomes more complex
Solution Approach 1:
The first sealing portion and the second sealing portion are merged into a single integrated battery insertion portion. This merging achieves dual sealing functionality (preventing electrolyte leakage from both the first and second surfaces) without requiring separate sealing components, thereby maintaining sealing reliability while avoiding excessive structural complexity.
Solution Approach 2:
The battery insertion portion serves multiple functions: it provides structural support for insertion into the battery housing, and simultaneously houses both the first and second sealing portions that prevent electrolyte leakage from different surfaces. This multi-functionality reduces the number of separate components needed, balancing sealing reliability with device simplicity.
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 enhanced sealing structure effectively prevents electrolyte leakage by ensuring complete contact with the battery housing, even in non-flat surfaces, achieving triple sealing through the combination of protrusions and an insertion groove.
Implementation Method 1
The protrusion may increase a frictional force with the battery housing by protruding toward the battery housing. Therefore, the protrusion may enhance a sealing force of the battery insertion portion inserted into the battery housing.
Implementation Method 2
As pressed toward the beading portion, the plurality of wings may be configured to slide at ends thereof inward or outward along a radial direction of a battery to be in close contact with the beading portion of the battery housing.
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
An electrolyte injection jig according to an embodiment of the present disclosure is configured to connect an electrolyte supply device that supplies an electrolyte and an opening formed on one side of a battery housing, and the electrolyte injection jig may include a device coupling portion coupled to the electrolyte supply device and a battery insertion portion configured to be inserted into the opening and to be in close contact with an inner surface of the battery housing, wherein the battery insertion portion may have a protrusion at a part in contact with the battery housing.